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<!DOCTYPE html>
<html>
<head>
<title>FLO Operators</title>
</head>
<script>
/* Constants for FLO blockchain operations !!Make sure to add this at begining!! */
const floGlobals = {
//Required for all
blockchain: "FLO_TEST",
//Required for blockchain API operators
apiURL: {
FLO: 'https://flosight.duckdns.org',
FLO_TEST: 'https://testnet-flosight.duckdns.org'
},
adminID: "oTZw3ydCRKDhcYC5Bp6mRJMGTTVv9JHtg8",
sendAmt: 0.001,
fee: 0.0005,
//Required for Supernode operations
supernodes: {} //each supnernode must be stored as floID : {uri:<uri>,pubKey:<publicKey>}
}
</script>
<body>
use console
<script>
/*!
* Crypto-JS v2.5.4 Crypto.js
* http://code.google.com/p/crypto-js/
* Copyright (c) 2009-2013, Jeff Mott. All rights reserved.
* http://code.google.com/p/crypto-js/wiki/License
*/
if (typeof Crypto == "undefined" || !Crypto.util) {
(function () {
var base64map = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
// Global Crypto object
var Crypto = window.Crypto = {};
// Crypto utilities
var util = Crypto.util = {
// Bit-wise rotate left
rotl: function (n, b) {
return (n << b) | (n >>> (32 - b));
},
// Bit-wise rotate right
rotr: function (n, b) {
return (n << (32 - b)) | (n >>> b);
},
// Swap big-endian to little-endian and vice versa
endian: function (n) {
// If number given, swap endian
if (n.constructor == Number) {
return util.rotl(n, 8) & 0x00FF00FF |
util.rotl(n, 24) & 0xFF00FF00;
}
// Else, assume array and swap all items
for (var i = 0; i < n.length; i++)
n[i] = util.endian(n[i]);
return n;
},
// Generate an array of any length of random bytes
randomBytes: function (n) {
for (var bytes = []; n > 0; n--)
bytes.push(Math.floor(Math.random() * 256));
return bytes;
},
// Convert a byte array to big-endian 32-bit words
bytesToWords: function (bytes) {
for (var words = [], i = 0, b = 0; i < bytes.length; i++, b += 8)
words[b >>> 5] |= (bytes[i] & 0xFF) << (24 - b % 32);
return words;
},
// Convert big-endian 32-bit words to a byte array
wordsToBytes: function (words) {
for (var bytes = [], b = 0; b < words.length * 32; b += 8)
bytes.push((words[b >>> 5] >>> (24 - b % 32)) & 0xFF);
return bytes;
},
// Convert a byte array to a hex string
bytesToHex: function (bytes) {
for (var hex = [], i = 0; i < bytes.length; i++) {
hex.push((bytes[i] >>> 4).toString(16));
hex.push((bytes[i] & 0xF).toString(16));
}
return hex.join("");
},
// Convert a hex string to a byte array
hexToBytes: function (hex) {
for (var bytes = [], c = 0; c < hex.length; c += 2)
bytes.push(parseInt(hex.substr(c, 2), 16));
return bytes;
},
// Convert a byte array to a base-64 string
bytesToBase64: function (bytes) {
for (var base64 = [], i = 0; i < bytes.length; i += 3) {
var triplet = (bytes[i] << 16) | (bytes[i + 1] << 8) | bytes[i + 2];
for (var j = 0; j < 4; j++) {
if (i * 8 + j * 6 <= bytes.length * 8)
base64.push(base64map.charAt((triplet >>> 6 * (3 - j)) & 0x3F));
else base64.push("=");
}
}
return base64.join("");
},
// Convert a base-64 string to a byte array
base64ToBytes: function (base64) {
// Remove non-base-64 characters
base64 = base64.replace(/[^A-Z0-9+\/]/ig, "");
for (var bytes = [], i = 0, imod4 = 0; i < base64.length; imod4 = ++i % 4) {
if (imod4 == 0) continue;
bytes.push(((base64map.indexOf(base64.charAt(i - 1)) & (Math.pow(2, -2 * imod4 + 8) - 1)) << (imod4 * 2)) |
(base64map.indexOf(base64.charAt(i)) >>> (6 - imod4 * 2)));
}
return bytes;
}
};
// Crypto character encodings
var charenc = Crypto.charenc = {};
// UTF-8 encoding
var UTF8 = charenc.UTF8 = {
// Convert a string to a byte array
stringToBytes: function (str) {
return Binary.stringToBytes(unescape(encodeURIComponent(str)));
},
// Convert a byte array to a string
bytesToString: function (bytes) {
return decodeURIComponent(escape(Binary.bytesToString(bytes)));
}
};
// Binary encoding
var Binary = charenc.Binary = {
// Convert a string to a byte array
stringToBytes: function (str) {
for (var bytes = [], i = 0; i < str.length; i++)
bytes.push(str.charCodeAt(i) & 0xFF);
return bytes;
},
// Convert a byte array to a string
bytesToString: function (bytes) {
for (var str = [], i = 0; i < bytes.length; i++)
str.push(String.fromCharCode(bytes[i]));
return str.join("");
}
};
})();
}
//Adding SHA1 to fix basic PKBDF2
/*
* Crypto-JS v2.5.4
* http://code.google.com/p/crypto-js/
* (c) 2009-2012 by Jeff Mott. All rights reserved.
* http://code.google.com/p/crypto-js/wiki/License
*/
(function () {
// Shortcuts
var C = Crypto,
util = C.util,
charenc = C.charenc,
UTF8 = charenc.UTF8,
Binary = charenc.Binary;
// Public API
var SHA1 = C.SHA1 = function (message, options) {
var digestbytes = util.wordsToBytes(SHA1._sha1(message));
return options && options.asBytes ? digestbytes :
options && options.asString ? Binary.bytesToString(digestbytes) :
util.bytesToHex(digestbytes);
};
// The core
SHA1._sha1 = function (message) {
// Convert to byte array
if (message.constructor == String) message = UTF8.stringToBytes(message);
/* else, assume byte array already */
var m = util.bytesToWords(message),
l = message.length * 8,
w = [],
H0 = 1732584193,
H1 = -271733879,
H2 = -1732584194,
H3 = 271733878,
H4 = -1009589776;
// Padding
m[l >> 5] |= 0x80 << (24 - l % 32);
m[((l + 64 >>> 9) << 4) + 15] = l;
for (var i = 0; i < m.length; i += 16) {
var a = H0,
b = H1,
c = H2,
d = H3,
e = H4;
for (var j = 0; j < 80; j++) {
if (j < 16) w[j] = m[i + j];
else {
var n = w[j - 3] ^ w[j - 8] ^ w[j - 14] ^ w[j - 16];
w[j] = (n << 1) | (n >>> 31);
}
var t = ((H0 << 5) | (H0 >>> 27)) + H4 + (w[j] >>> 0) + (
j < 20 ? (H1 & H2 | ~H1 & H3) + 1518500249 :
j < 40 ? (H1 ^ H2 ^ H3) + 1859775393 :
j < 60 ? (H1 & H2 | H1 & H3 | H2 & H3) - 1894007588 :
(H1 ^ H2 ^ H3) - 899497514);
H4 = H3;
H3 = H2;
H2 = (H1 << 30) | (H1 >>> 2);
H1 = H0;
H0 = t;
}
H0 += a;
H1 += b;
H2 += c;
H3 += d;
H4 += e;
}
return [H0, H1, H2, H3, H4];
};
// Package private blocksize
SHA1._blocksize = 16;
SHA1._digestsize = 20;
})();
//Added to make PKBDF2 work
/*
* Crypto-JS v2.5.4
* http://code.google.com/p/crypto-js/
* (c) 2009-2012 by Jeff Mott. All rights reserved.
* http://code.google.com/p/crypto-js/wiki/License
*/
(function () {
// Shortcuts
var C = Crypto,
util = C.util,
charenc = C.charenc,
UTF8 = charenc.UTF8,
Binary = charenc.Binary;
C.HMAC = function (hasher, message, key, options) {
// Convert to byte arrays
if (message.constructor == String) message = UTF8.stringToBytes(message);
if (key.constructor == String) key = UTF8.stringToBytes(key);
/* else, assume byte arrays already */
// Allow arbitrary length keys
if (key.length > hasher._blocksize * 4)
key = hasher(key, {
asBytes: true
});
// XOR keys with pad constants
var okey = key.slice(0),
ikey = key.slice(0);
for (var i = 0; i < hasher._blocksize * 4; i++) {
okey[i] ^= 0x5C;
ikey[i] ^= 0x36;
}
var hmacbytes = hasher(okey.concat(hasher(ikey.concat(message), {
asBytes: true
})), {
asBytes: true
});
return options && options.asBytes ? hmacbytes :
options && options.asString ? Binary.bytesToString(hmacbytes) :
util.bytesToHex(hmacbytes);
};
})();
//crypto-sha256-hmac.js
/*
* Crypto-JS v2.5.4
* http://code.google.com/p/crypto-js/
* (c) 2009-2012 by Jeff Mott. All rights reserved.
* http://code.google.com/p/crypto-js/wiki/License
*/
function ascii_to_hexa(str) {
var arr1 = [];
for (var n = 0, l = str.length; n < l; n++) {
var hex = Number(str.charCodeAt(n)).toString(16);
arr1.push(hex);
}
return arr1.join('');
}
(typeof Crypto == "undefined" || !Crypto.util) && function () {
var d = window.Crypto = {},
k = d.util = {
rotl: function (b, a) {
return b << a | b >>> 32 - a
},
rotr: function (b, a) {
return b << 32 - a | b >>> a
},
endian: function (b) {
if (b.constructor == Number) return k.rotl(b, 8) & 16711935 | k.rotl(b, 24) & 4278255360;
for (var a = 0; a < b.length; a++) b[a] = k.endian(b[a]);
return b
},
randomBytes: function (b) {
for (var a = []; b > 0; b--) a.push(Math.floor(Math.random() * 256));
return a
},
bytesToWords: function (b) {
for (var a = [], c = 0, e = 0; c < b.length; c++, e += 8) a[e >>> 5] |= (b[c] & 255) <<
24 - e % 32;
return a
},
wordsToBytes: function (b) {
for (var a = [], c = 0; c < b.length * 32; c += 8) a.push(b[c >>> 5] >>> 24 - c % 32 & 255);
return a
},
bytesToHex: function (b) {
for (var a = [], c = 0; c < b.length; c++) a.push((b[c] >>> 4).toString(16)), a.push((b[c] &
15).toString(16));
return a.join("")
},
hexToBytes: function (b) {
for (var a = [], c = 0; c < b.length; c += 2) a.push(parseInt(b.substr(c, 2), 16));
return a
},
bytesToBase64: function (b) {
for (var a = [], c = 0; c < b.length; c += 3)
for (var e = b[c] << 16 | b[c + 1] << 8 | b[c + 2], p = 0; p < 4; p++) c * 8 + p * 6 <=
b.length * 8 ? a.push(
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/".charAt(e >>>
6 * (3 - p) & 63)) : a.push("=");
return a.join("")
},
base64ToBytes: function (b) {
for (var b = b.replace(/[^A-Z0-9+\/]/ig, ""), a = [], c = 0, e = 0; c < b.length; e = ++c %
4) e != 0 && a.push(("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"
.indexOf(b.charAt(c - 1)) & Math.pow(2, -2 * e + 8) - 1) << e * 2 |
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/".indexOf(b.charAt(
c)) >>> 6 - e * 2);
return a
}
},
d = d.charenc = {};
d.UTF8 = {
stringToBytes: function (b) {
return g.stringToBytes(unescape(encodeURIComponent(b)))
},
bytesToString: function (b) {
return decodeURIComponent(escape(g.bytesToString(b)))
}
};
var g = d.Binary = {
stringToBytes: function (b) {
for (var a = [], c = 0; c < b.length; c++) a.push(b.charCodeAt(c) & 255);
return a
},
bytesToString: function (b) {
for (var a = [], c = 0; c < b.length; c++) a.push(String.fromCharCode(b[c]));
return a.join("")
}
}
}();
(function () {
var d = Crypto,
k = d.util,
g = d.charenc,
b = g.UTF8,
a = g.Binary,
c = [1116352408, 1899447441, 3049323471, 3921009573, 961987163, 1508970993, 2453635748, 2870763221,
3624381080, 310598401, 607225278, 1426881987, 1925078388, 2162078206, 2614888103, 3248222580,
3835390401, 4022224774, 264347078, 604807628, 770255983, 1249150122, 1555081692, 1996064986,
2554220882, 2821834349, 2952996808, 3210313671, 3336571891, 3584528711, 113926993, 338241895,
666307205, 773529912, 1294757372, 1396182291, 1695183700, 1986661051, 2177026350, 2456956037,
2730485921,
2820302411, 3259730800, 3345764771, 3516065817, 3600352804, 4094571909, 275423344, 430227734,
506948616, 659060556, 883997877, 958139571, 1322822218, 1537002063, 1747873779, 1955562222,
2024104815, 2227730452, 2361852424, 2428436474, 2756734187, 3204031479, 3329325298
],
e = d.SHA256 = function (b, c) {
var f = k.wordsToBytes(e._sha256(b));
return c && c.asBytes ? f : c && c.asString ? a.bytesToString(f) : k.bytesToHex(f)
};
e._sha256 = function (a) {
a.constructor == String && (a = b.stringToBytes(a));
var e = k.bytesToWords(a),
f = a.length * 8,
a = [1779033703, 3144134277,
1013904242, 2773480762, 1359893119, 2600822924, 528734635, 1541459225
],
d = [],
g, m, r, i, n, o, s, t, h, l, j;
e[f >> 5] |= 128 << 24 - f % 32;
e[(f + 64 >> 9 << 4) + 15] = f;
for (t = 0; t < e.length; t += 16) {
f = a[0];
g = a[1];
m = a[2];
r = a[3];
i = a[4];
n = a[5];
o = a[6];
s = a[7];
for (h = 0; h < 64; h++) {
h < 16 ? d[h] = e[h + t] : (l = d[h - 15], j = d[h - 2], d[h] = ((l << 25 | l >>> 7) ^
(l << 14 | l >>> 18) ^ l >>> 3) + (d[h - 7] >>> 0) + ((j << 15 | j >>> 17) ^
(j << 13 | j >>> 19) ^ j >>> 10) + (d[h - 16] >>> 0));
j = f & g ^ f & m ^ g & m;
var u = (f << 30 | f >>> 2) ^ (f << 19 | f >>> 13) ^ (f << 10 | f >>> 22);
l = (s >>> 0) + ((i << 26 | i >>> 6) ^ (i << 21 | i >>> 11) ^ (i << 7 | i >>> 25)) +
(i & n ^ ~i & o) + c[h] + (d[h] >>> 0);
j = u + j;
s = o;
o = n;
n = i;
i = r + l >>> 0;
r = m;
m = g;
g = f;
f = l + j >>> 0
}
a[0] += f;
a[1] += g;
a[2] += m;
a[3] += r;
a[4] += i;
a[5] += n;
a[6] += o;
a[7] += s
}
return a
};
e._blocksize = 16;
e._digestsize = 32
})();
(function () {
var d = Crypto,
k = d.util,
g = d.charenc,
b = g.UTF8,
a = g.Binary;
d.HMAC = function (c, e, d, g) {
e.constructor == String && (e = b.stringToBytes(e));
d.constructor == String && (d = b.stringToBytes(d));
d.length > c._blocksize * 4 && (d = c(d, {
asBytes: !0
}));
for (var f = d.slice(0), d = d.slice(0), q = 0; q < c._blocksize * 4; q++) f[q] ^= 92, d[q] ^=
54;
c = c(f.concat(c(d.concat(e), {
asBytes: !0
})), {
asBytes: !0
});
return g && g.asBytes ? c : g && g.asString ? a.bytesToString(c) : k.bytesToHex(c)
}
})();
/*!
* Random number generator with ArcFour PRNG
*
* NOTE: For best results, put code like
* <body onclick='SecureRandom.seedTime();' onkeypress='SecureRandom.seedTime();'>
* in your main HTML document.
*
* Copyright Tom Wu, bitaddress.org BSD License.
* http://www-cs-students.stanford.edu/~tjw/jsbn/LICENSE
*/
(function () {
// Constructor function of Global SecureRandom object
var sr = window.SecureRandom = function () { };
// Properties
sr.state;
sr.pool;
sr.pptr;
sr.poolCopyOnInit;
// Pool size must be a multiple of 4 and greater than 32.
// An array of bytes the size of the pool will be passed to init()
sr.poolSize = 256;
// --- object methods ---
// public method
// ba: byte array
sr.prototype.nextBytes = function (ba) {
var i;
if (window.crypto && window.crypto.getRandomValues && window.Uint8Array) {
try {
var rvBytes = new Uint8Array(ba.length);
window.crypto.getRandomValues(rvBytes);
for (i = 0; i < ba.length; ++i)
ba[i] = sr.getByte() ^ rvBytes[i];
return;
} catch (e) {
alert(e);
}
}
for (i = 0; i < ba.length; ++i) ba[i] = sr.getByte();
};
// --- static methods ---
// Mix in the current time (w/milliseconds) into the pool
// NOTE: this method should be called from body click/keypress event handlers to increase entropy
sr.seedTime = function () {
sr.seedInt(new Date().getTime());
}
sr.getByte = function () {
if (sr.state == null) {
sr.seedTime();
sr.state = sr.ArcFour(); // Plug in your RNG constructor here
sr.state.init(sr.pool);
sr.poolCopyOnInit = [];
for (sr.pptr = 0; sr.pptr < sr.pool.length; ++sr.pptr)
sr.poolCopyOnInit[sr.pptr] = sr.pool[sr.pptr];
sr.pptr = 0;
}
// TODO: allow reseeding after first request
return sr.state.next();
}
// Mix in a 32-bit integer into the pool
sr.seedInt = function (x) {
sr.seedInt8(x);
sr.seedInt8((x >> 8));
sr.seedInt8((x >> 16));
sr.seedInt8((x >> 24));
}
// Mix in a 16-bit integer into the pool
sr.seedInt16 = function (x) {
sr.seedInt8(x);
sr.seedInt8((x >> 8));
}
// Mix in a 8-bit integer into the pool
sr.seedInt8 = function (x) {
sr.pool[sr.pptr++] ^= x & 255;
if (sr.pptr >= sr.poolSize) sr.pptr -= sr.poolSize;
}
// Arcfour is a PRNG
sr.ArcFour = function () {
function Arcfour() {
this.i = 0;
this.j = 0;
this.S = new Array();
}
// Initialize arcfour context from key, an array of ints, each from [0..255]
function ARC4init(key) {
var i, j, t;
for (i = 0; i < 256; ++i)
this.S[i] = i;
j = 0;
for (i = 0; i < 256; ++i) {
j = (j + this.S[i] + key[i % key.length]) & 255;
t = this.S[i];
this.S[i] = this.S[j];
this.S[j] = t;
}
this.i = 0;
this.j = 0;
}
function ARC4next() {
var t;
this.i = (this.i + 1) & 255;
this.j = (this.j + this.S[this.i]) & 255;
t = this.S[this.i];
this.S[this.i] = this.S[this.j];
this.S[this.j] = t;
return this.S[(t + this.S[this.i]) & 255];
}
Arcfour.prototype.init = ARC4init;
Arcfour.prototype.next = ARC4next;
return new Arcfour();
};
// Initialize the pool with junk if needed.
if (sr.pool == null) {
sr.pool = new Array();
sr.pptr = 0;
var t;
if (window.crypto && window.crypto.getRandomValues && window.Uint8Array) {
try {
// Use webcrypto if available
var ua = new Uint8Array(sr.poolSize);
window.crypto.getRandomValues(ua);
for (t = 0; t < sr.poolSize; ++t)
sr.pool[sr.pptr++] = ua[t];
} catch (e) { alert(e); }
}
while (sr.pptr < sr.poolSize) { // extract some randomness from Math.random()
t = Math.floor(65536 * Math.random());
sr.pool[sr.pptr++] = t >>> 8;
sr.pool[sr.pptr++] = t & 255;
}
sr.pptr = Math.floor(sr.poolSize * Math.random());
sr.seedTime();
// entropy
var entropyStr = "";
// screen size and color depth: ~4.8 to ~5.4 bits
entropyStr += (window.screen.height * window.screen.width * window.screen.colorDepth);
entropyStr += (window.screen.availHeight * window.screen.availWidth * window.screen.pixelDepth);
// time zone offset: ~4 bits
var dateObj = new Date();
var timeZoneOffset = dateObj.getTimezoneOffset();
entropyStr += timeZoneOffset;
// user agent: ~8.3 to ~11.6 bits
entropyStr += navigator.userAgent;
// browser plugin details: ~16.2 to ~21.8 bits
var pluginsStr = "";
for (var i = 0; i < navigator.plugins.length; i++) {
pluginsStr += navigator.plugins[i].name + " " + navigator.plugins[i].filename + " " + navigator.plugins[i].description + " " + navigator.plugins[i].version + ", ";
}
var mimeTypesStr = "";
for (var i = 0; i < navigator.mimeTypes.length; i++) {
mimeTypesStr += navigator.mimeTypes[i].description + " " + navigator.mimeTypes[i].type + " " + navigator.mimeTypes[i].suffixes + ", ";
}
entropyStr += pluginsStr + mimeTypesStr;
// cookies and storage: 1 bit
entropyStr += navigator.cookieEnabled + typeof (sessionStorage) + typeof (localStorage);
// language: ~7 bit
entropyStr += navigator.language;
// history: ~2 bit
entropyStr += window.history.length;
// location
entropyStr += window.location;
var entropyBytes = Crypto.SHA256(entropyStr, { asBytes: true });
for (var i = 0 ; i < entropyBytes.length ; i++) {
sr.seedInt8(entropyBytes[i]);
}
}
})();
//ripemd160.js
/*
CryptoJS v3.1.2
code.google.com/p/crypto-js
(c) 2009-2013 by Jeff Mott. All rights reserved.
code.google.com/p/crypto-js/wiki/License
*/
/** @preserve
(c) 2012 by Cédric Mesnil. All rights reserved.
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
- Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
// Constants table
var zl = [
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
7, 4, 13, 1, 10, 6, 15, 3, 12, 0, 9, 5, 2, 14, 11, 8,
3, 10, 14, 4, 9, 15, 8, 1, 2, 7, 0, 6, 13, 11, 5, 12,
1, 9, 11, 10, 0, 8, 12, 4, 13, 3, 7, 15, 14, 5, 6, 2,
4, 0, 5, 9, 7, 12, 2, 10, 14, 1, 3, 8, 11, 6, 15, 13
];
var zr = [
5, 14, 7, 0, 9, 2, 11, 4, 13, 6, 15, 8, 1, 10, 3, 12,
6, 11, 3, 7, 0, 13, 5, 10, 14, 15, 8, 12, 4, 9, 1, 2,
15, 5, 1, 3, 7, 14, 6, 9, 11, 8, 12, 2, 10, 0, 4, 13,
8, 6, 4, 1, 3, 11, 15, 0, 5, 12, 2, 13, 9, 7, 10, 14,
12, 15, 10, 4, 1, 5, 8, 7, 6, 2, 13, 14, 0, 3, 9, 11
];
var sl = [
11, 14, 15, 12, 5, 8, 7, 9, 11, 13, 14, 15, 6, 7, 9, 8,
7, 6, 8, 13, 11, 9, 7, 15, 7, 12, 15, 9, 11, 7, 13, 12,
11, 13, 6, 7, 14, 9, 13, 15, 14, 8, 13, 6, 5, 12, 7, 5,
11, 12, 14, 15, 14, 15, 9, 8, 9, 14, 5, 6, 8, 6, 5, 12,
9, 15, 5, 11, 6, 8, 13, 12, 5, 12, 13, 14, 11, 8, 5, 6
];
var sr = [
8, 9, 9, 11, 13, 15, 15, 5, 7, 7, 8, 11, 14, 14, 12, 6,
9, 13, 15, 7, 12, 8, 9, 11, 7, 7, 12, 7, 6, 15, 13, 11,
9, 7, 15, 11, 8, 6, 6, 14, 12, 13, 5, 14, 13, 13, 7, 5,
15, 5, 8, 11, 14, 14, 6, 14, 6, 9, 12, 9, 12, 5, 15, 8,
8, 5, 12, 9, 12, 5, 14, 6, 8, 13, 6, 5, 15, 13, 11, 11
];
var hl = [0x00000000, 0x5A827999, 0x6ED9EBA1, 0x8F1BBCDC, 0xA953FD4E];
var hr = [0x50A28BE6, 0x5C4DD124, 0x6D703EF3, 0x7A6D76E9, 0x00000000];
var bytesToWords = function (bytes) {
var words = [];
for (var i = 0, b = 0; i < bytes.length; i++, b += 8) {
words[b >>> 5] |= bytes[i] << (24 - b % 32);
}
return words;
};
var wordsToBytes = function (words) {
var bytes = [];
for (var b = 0; b < words.length * 32; b += 8) {
bytes.push((words[b >>> 5] >>> (24 - b % 32)) & 0xFF);
}
return bytes;
};
var processBlock = function (H, M, offset) {
// Swap endian
for (var i = 0; i < 16; i++) {
var offset_i = offset + i;
var M_offset_i = M[offset_i];
// Swap
M[offset_i] = (
(((M_offset_i << 8) | (M_offset_i >>> 24)) & 0x00ff00ff) |
(((M_offset_i << 24) | (M_offset_i >>> 8)) & 0xff00ff00)
);
}
// Working variables
var al, bl, cl, dl, el;
var ar, br, cr, dr, er;
ar = al = H[0];
br = bl = H[1];
cr = cl = H[2];
dr = dl = H[3];
er = el = H[4];
// Computation
var t;
for (var i = 0; i < 80; i += 1) {
t = (al + M[offset + zl[i]]) | 0;
if (i < 16) {
t += f1(bl, cl, dl) + hl[0];
} else if (i < 32) {
t += f2(bl, cl, dl) + hl[1];
} else if (i < 48) {
t += f3(bl, cl, dl) + hl[2];
} else if (i < 64) {
t += f4(bl, cl, dl) + hl[3];
} else { // if (i<80) {
t += f5(bl, cl, dl) + hl[4];
}
t = t | 0;
t = rotl(t, sl[i]);
t = (t + el) | 0;
al = el;
el = dl;
dl = rotl(cl, 10);
cl = bl;
bl = t;
t = (ar + M[offset + zr[i]]) | 0;
if (i < 16) {
t += f5(br, cr, dr) + hr[0];
} else if (i < 32) {
t += f4(br, cr, dr) + hr[1];
} else if (i < 48) {
t += f3(br, cr, dr) + hr[2];
} else if (i < 64) {
t += f2(br, cr, dr) + hr[3];
} else { // if (i<80) {
t += f1(br, cr, dr) + hr[4];
}
t = t | 0;
t = rotl(t, sr[i]);
t = (t + er) | 0;
ar = er;
er = dr;
dr = rotl(cr, 10);
cr = br;
br = t;
}
// Intermediate hash value
t = (H[1] + cl + dr) | 0;
H[1] = (H[2] + dl + er) | 0;
H[2] = (H[3] + el + ar) | 0;
H[3] = (H[4] + al + br) | 0;
H[4] = (H[0] + bl + cr) | 0;
H[0] = t;
};
function f1(x, y, z) {
return ((x) ^ (y) ^ (z));
}
function f2(x, y, z) {
return (((x) & (y)) | ((~x) & (z)));
}
function f3(x, y, z) {
return (((x) | (~(y))) ^ (z));
}
function f4(x, y, z) {
return (((x) & (z)) | ((y) & (~(z))));
}
function f5(x, y, z) {
return ((x) ^ ((y) | (~(z))));
}
function rotl(x, n) {
return (x << n) | (x >>> (32 - n));
}
function ripemd160(message) {
var H = [0x67452301, 0xEFCDAB89, 0x98BADCFE, 0x10325476, 0xC3D2E1F0];
var m = bytesToWords(message);
var nBitsLeft = message.length * 8;
var nBitsTotal = message.length * 8;
// Add padding
m[nBitsLeft >>> 5] |= 0x80 << (24 - nBitsLeft % 32);
m[(((nBitsLeft + 64) >>> 9) << 4) + 14] = (
(((nBitsTotal << 8) | (nBitsTotal >>> 24)) & 0x00ff00ff) |
(((nBitsTotal << 24) | (nBitsTotal >>> 8)) & 0xff00ff00)
);
for (var i = 0; i < m.length; i += 16) {
processBlock(H, m, i);
}
// Swap endian
for (var i = 0; i < 5; i++) {
// Shortcut
var H_i = H[i];
// Swap
H[i] = (((H_i << 8) | (H_i >>> 24)) & 0x00ff00ff) |
(((H_i << 24) | (H_i >>> 8)) & 0xff00ff00);
}
var digestbytes = wordsToBytes(H);
return digestbytes;
}
// Upstream 'BigInteger' here:
// Original Author: http://www-cs-students.stanford.edu/~tjw/jsbn/
// Follows 'jsbn' on Github: https://github.com/jasondavies/jsbn
// Review and Testing: https://github.com/cryptocoinjs/bigi/
/*!
* Basic JavaScript BN library - subset useful for RSA encryption. v1.4
*
* Copyright (c) 2005 Tom Wu
* All Rights Reserved.
* BSD License
* http://www-cs-students.stanford.edu/~tjw/jsbn/LICENSE
*
* Copyright Stephan Thomas
* Copyright pointbiz
*/
(function () {
// (public) Constructor function of Global BigInteger object
var BigInteger = window.BigInteger = function BigInteger(a, b, c) {
if (!(this instanceof BigInteger))
return new BigInteger(a, b, c);
if (a != null)
if ("number" == typeof a) this.fromNumber(a, b, c);
else if (b == null && "string" != typeof a) this.fromString(a, 256);
else this.fromString(a, b);
};
// Bits per digit
var dbits;
// JavaScript engine analysis
var canary = 0xdeadbeefcafe;
var j_lm = ((canary & 0xffffff) == 0xefcafe);
// return new, unset BigInteger
function nbi() {
return new BigInteger(null);
}
// am: Compute w_j += (x*this_i), propagate carries,
// c is initial carry, returns final carry.
// c < 3*dvalue, x < 2*dvalue, this_i < dvalue
// We need to select the fastest one that works in this environment.
// am1: use a single mult and divide to get the high bits,
// max digit bits should be 26 because
// max internal value = 2*dvalue^2-2*dvalue (< 2^53)
function am1(i, x, w, j, c, n) {
while (--n >= 0) {
var v = x * this[i++] + w[j] + c;
c = Math.floor(v / 0x4000000);
w[j++] = v & 0x3ffffff;
}
return c;
}
// am2 avoids a big mult-and-extract completely.
// Max digit bits should be <= 30 because we do bitwise ops
// on values up to 2*hdvalue^2-hdvalue-1 (< 2^31)
function am2(i, x, w, j, c, n) {
var xl = x & 0x7fff,
xh = x >> 15;
while (--n >= 0) {
var l = this[i] & 0x7fff;
var h = this[i++] >> 15;
var m = xh * l + h * xl;
l = xl * l + ((m & 0x7fff) << 15) + w[j] + (c & 0x3fffffff);
c = (l >>> 30) + (m >>> 15) + xh * h + (c >>> 30);
w[j++] = l & 0x3fffffff;
}
return c;
}
// Alternately, set max digit bits to 28 since some
// browsers slow down when dealing with 32-bit numbers.
function am3(i, x, w, j, c, n) {
var xl = x & 0x3fff,
xh = x >> 14;
while (--n >= 0) {
var l = this[i] & 0x3fff;
var h = this[i++] >> 14;
var m = xh * l + h * xl;
l = xl * l + ((m & 0x3fff) << 14) + w[j] + c;
c = (l >> 28) + (m >> 14) + xh * h;
w[j++] = l & 0xfffffff;
}
return c;
}
if (j_lm && (navigator.appName == "Microsoft Internet Explorer")) {
BigInteger.prototype.am = am2;
dbits = 30;
} else if (j_lm && (navigator.appName != "Netscape")) {
BigInteger.prototype.am = am1;
dbits = 26;
} else { // Mozilla/Netscape seems to prefer am3
BigInteger.prototype.am = am3;
dbits = 28;
}
BigInteger.prototype.DB = dbits;
BigInteger.prototype.DM = ((1 << dbits) - 1);
BigInteger.prototype.DV = (1 << dbits);
var BI_FP = 52;
BigInteger.prototype.FV = Math.pow(2, BI_FP);
BigInteger.prototype.F1 = BI_FP - dbits;
BigInteger.prototype.F2 = 2 * dbits - BI_FP;
// Digit conversions
var BI_RM = "0123456789abcdefghijklmnopqrstuvwxyz";
var BI_RC = new Array();
var rr, vv;
rr = "0".charCodeAt(0);
for (vv = 0; vv <= 9; ++vv) BI_RC[rr++] = vv;
rr = "a".charCodeAt(0);
for (vv = 10; vv < 36; ++vv) BI_RC[rr++] = vv;
rr = "A".charCodeAt(0);
for (vv = 10; vv < 36; ++vv) BI_RC[rr++] = vv;
function int2char(n) {
return BI_RM.charAt(n);
}
function intAt(s, i) {
var c = BI_RC[s.charCodeAt(i)];
return (c == null) ? -1 : c;
}
// return bigint initialized to value
function nbv(i) {
var r = nbi();
r.fromInt(i);
return r;
}
// returns bit length of the integer x
function nbits(x) {
var r = 1,
t;
if ((t = x >>> 16) != 0) {
x = t;
r += 16;
}
if ((t = x >> 8) != 0) {
x = t;
r += 8;
}
if ((t = x >> 4) != 0) {
x = t;
r += 4;
}
if ((t = x >> 2) != 0) {
x = t;
r += 2;
}
if ((t = x >> 1) != 0) {
x = t;
r += 1;
}
return r;
}
// (protected) copy this to r
BigInteger.prototype.copyTo = function (r) {
for (var i = this.t - 1; i >= 0; --i) r[i] = this[i];
r.t = this.t;
r.s = this.s;
};
// (protected) set from integer value x, -DV <= x < DV
BigInteger.prototype.fromInt = function (x) {
this.t = 1;
this.s = (x < 0) ? -1 : 0;
if (x > 0) this[0] = x;
else if (x < -1) this[0] = x + this.DV;
else this.t = 0;
};
// (protected) set from string and radix
BigInteger.prototype.fromString = function (s, b) {
var k;
if (b == 16) k = 4;
else if (b == 8) k = 3;
else if (b == 256) k = 8; // byte array
else if (b == 2) k = 1;
else if (b == 32) k = 5;
else if (b == 4) k = 2;
else {
this.fromRadix(s, b);
return;
}
this.t = 0;
this.s = 0;
var i = s.length,
mi = false,
sh = 0;
while (--i >= 0) {
var x = (k == 8) ? s[i] & 0xff : intAt(s, i);
if (x < 0) {
if (s.charAt(i) == "-") mi = true;
continue;
}
mi = false;
if (sh == 0)
this[this.t++] = x;
else if (sh + k > this.DB) {
this[this.t - 1] |= (x & ((1 << (this.DB - sh)) - 1)) << sh;
this[this.t++] = (x >> (this.DB - sh));
} else
this[this.t - 1] |= x << sh;
sh += k;
if (sh >= this.DB) sh -= this.DB;
}
if (k == 8 && (s[0] & 0x80) != 0) {
this.s = -1;
if (sh > 0) this[this.t - 1] |= ((1 << (this.DB - sh)) - 1) << sh;
}
this.clamp();
if (mi) BigInteger.ZERO.subTo(this, this);
};
// (protected) clamp off excess high words
BigInteger.prototype.clamp = function () {
var c = this.s & this.DM;
while (this.t > 0 && this[this.t - 1] == c) --this.t;
};
// (protected) r = this << n*DB
BigInteger.prototype.dlShiftTo = function (n, r) {
var i;
for (i = this.t - 1; i >= 0; --i) r[i + n] = this[i];
for (i = n - 1; i >= 0; --i) r[i] = 0;
r.t = this.t + n;
r.s = this.s;
};
// (protected) r = this >> n*DB
BigInteger.prototype.drShiftTo = function (n, r) {
for (var i = n; i < this.t; ++i) r[i - n] = this[i];
r.t = Math.max(this.t - n, 0);
r.s = this.s;
};
// (protected) r = this << n
BigInteger.prototype.lShiftTo = function (n, r) {
var bs = n % this.DB;
var cbs = this.DB - bs;
var bm = (1 << cbs) - 1;
var ds = Math.floor(n / this.DB),
c = (this.s << bs) & this.DM,
i;
for (i = this.t - 1; i >= 0; --i) {
r[i + ds + 1] = (this[i] >> cbs) | c;
c = (this[i] & bm) << bs;
}
for (i = ds - 1; i >= 0; --i) r[i] = 0;
r[ds] = c;
r.t = this.t + ds + 1;
r.s = this.s;
r.clamp();
};
// (protected) r = this >> n
BigInteger.prototype.rShiftTo = function (n, r) {
r.s = this.s;
var ds = Math.floor(n / this.DB);
if (ds >= this.t) {
r.t = 0;
return;
}
var bs = n % this.DB;
var cbs = this.DB - bs;
var bm = (1 << bs) - 1;
r[0] = this[ds] >> bs;
for (var i = ds + 1; i < this.t; ++i) {
r[i - ds - 1] |= (this[i] & bm) << cbs;
r[i - ds] = this[i] >> bs;
}
if (bs > 0) r[this.t - ds - 1] |= (this.s & bm) << cbs;
r.t = this.t - ds;
r.clamp();
};
// (protected) r = this - a
BigInteger.prototype.subTo = function (a, r) {
var i = 0,
c = 0,
m = Math.min(a.t, this.t);
while (i < m) {
c += this[i] - a[i];
r[i++] = c & this.DM;
c >>= this.DB;
}
if (a.t < this.t) {
c -= a.s;
while (i < this.t) {
c += this[i];
r[i++] = c & this.DM;
c >>= this.DB;
}
c += this.s;
} else {
c += this.s;
while (i < a.t) {
c -= a[i];
r[i++] = c & this.DM;
c >>= this.DB;
}
c -= a.s;
}
r.s = (c < 0) ? -1 : 0;
if (c < -1) r[i++] = this.DV + c;
else if (c > 0) r[i++] = c;
r.t = i;
r.clamp();
};
// (protected) r = this * a, r != this,a (HAC 14.12)
// "this" should be the larger one if appropriate.
BigInteger.prototype.multiplyTo = function (a, r) {
var x = this.abs(),
y = a.abs();
var i = x.t;
r.t = i + y.t;
while (--i >= 0) r[i] = 0;
for (i = 0; i < y.t; ++i) r[i + x.t] = x.am(0, y[i], r, i, 0, x.t);
r.s = 0;
r.clamp();
if (this.s != a.s) BigInteger.ZERO.subTo(r, r);
};
// (protected) r = this^2, r != this (HAC 14.16)
BigInteger.prototype.squareTo = function (r) {
var x = this.abs();
var i = r.t = 2 * x.t;
while (--i >= 0) r[i] = 0;
for (i = 0; i < x.t - 1; ++i) {
var c = x.am(i, x[i], r, 2 * i, 0, 1);
if ((r[i + x.t] += x.am(i + 1, 2 * x[i], r, 2 * i + 1, c, x.t - i - 1)) >= x.DV) {
r[i + x.t] -= x.DV;
r[i + x.t + 1] = 1;
}
}
if (r.t > 0) r[r.t - 1] += x.am(i, x[i], r, 2 * i, 0, 1);
r.s = 0;
r.clamp();
};
// (protected) divide this by m, quotient and remainder to q, r (HAC 14.20)
// r != q, this != m. q or r may be null.
BigInteger.prototype.divRemTo = function (m, q, r) {
var pm = m.abs();
if (pm.t <= 0) return;
var pt = this.abs();
if (pt.t < pm.t) {
if (q != null) q.fromInt(0);
if (r != null) this.copyTo(r);
return;
}
if (r == null) r = nbi();
var y = nbi(),
ts = this.s,
ms = m.s;
var nsh = this.DB - nbits(pm[pm.t - 1]); // normalize modulus
if (nsh > 0) {
pm.lShiftTo(nsh, y);
pt.lShiftTo(nsh, r);
} else {
pm.copyTo(y);
pt.copyTo(r);
}
var ys = y.t;
var y0 = y[ys - 1];
if (y0 == 0) return;
var yt = y0 * (1 << this.F1) + ((ys > 1) ? y[ys - 2] >> this.F2 : 0);
var d1 = this.FV / yt,
d2 = (1 << this.F1) / yt,
e = 1 << this.F2;
var i = r.t,
j = i - ys,
t = (q == null) ? nbi() : q;
y.dlShiftTo(j, t);
if (r.compareTo(t) >= 0) {
r[r.t++] = 1;
r.subTo(t, r);
}
BigInteger.ONE.dlShiftTo(ys, t);
t.subTo(y, y); // "negative" y so we can replace sub with am later
while (y.t < ys) y[y.t++] = 0;
while (--j >= 0) {
// Estimate quotient digit
var qd = (r[--i] == y0) ? this.DM : Math.floor(r[i] * d1 + (r[i - 1] + e) * d2);
if ((r[i] += y.am(0, qd, r, j, 0, ys)) < qd) { // Try it out
y.dlShiftTo(j, t);
r.subTo(t, r);
while (r[i] < --qd) r.subTo(t, r);
}
}
if (q != null) {
r.drShiftTo(ys, q);
if (ts != ms) BigInteger.ZERO.subTo(q, q);
}
r.t = ys;
r.clamp();
if (nsh > 0) r.rShiftTo(nsh, r); // Denormalize remainder
if (ts < 0) BigInteger.ZERO.subTo(r, r);
};
// (protected) return "-1/this % 2^DB"; useful for Mont. reduction
// justification:
// xy == 1 (mod m)
// xy = 1+km
// xy(2-xy) = (1+km)(1-km)
// x[y(2-xy)] = 1-k^2m^2
// x[y(2-xy)] == 1 (mod m^2)
// if y is 1/x mod m, then y(2-xy) is 1/x mod m^2
// should reduce x and y(2-xy) by m^2 at each step to keep size bounded.
// JS multiply "overflows" differently from C/C++, so care is needed here.
BigInteger.prototype.invDigit = function () {
if (this.t < 1) return 0;
var x = this[0];
if ((x & 1) == 0) return 0;
var y = x & 3; // y == 1/x mod 2^2
y = (y * (2 - (x & 0xf) * y)) & 0xf; // y == 1/x mod 2^4
y = (y * (2 - (x & 0xff) * y)) & 0xff; // y == 1/x mod 2^8
y = (y * (2 - (((x & 0xffff) * y) & 0xffff))) & 0xffff; // y == 1/x mod 2^16
// last step - calculate inverse mod DV directly;
// assumes 16 < DB <= 32 and assumes ability to handle 48-bit ints
y = (y * (2 - x * y % this.DV)) % this.DV; // y == 1/x mod 2^dbits
// we really want the negative inverse, and -DV < y < DV
return (y > 0) ? this.DV - y : -y;
};
// (protected) true iff this is even
BigInteger.prototype.isEven = function () {
return ((this.t > 0) ? (this[0] & 1) : this.s) == 0;
};
// (protected) this^e, e < 2^32, doing sqr and mul with "r" (HAC 14.79)
BigInteger.prototype.exp = function (e, z) {
if (e > 0xffffffff || e < 1) return BigInteger.ONE;
var r = nbi(),
r2 = nbi(),
g = z.convert(this),
i = nbits(e) - 1;
g.copyTo(r);
while (--i >= 0) {
z.sqrTo(r, r2);
if ((e & (1 << i)) > 0) z.mulTo(r2, g, r);
else {
var t = r;
r = r2;
r2 = t;
}
}
return z.revert(r);
};
// (public) return string representation in given radix
BigInteger.prototype.toString = function (b) {
if (this.s < 0) return "-" + this.negate().toString(b);
var k;
if (b == 16) k = 4;
else if (b == 8) k = 3;
else if (b == 2) k = 1;
else if (b == 32) k = 5;
else if (b == 4) k = 2;
else return this.toRadix(b);
var km = (1 << k) - 1,
d, m = false,
r = "",
i = this.t;
var p = this.DB - (i * this.DB) % k;
if (i-- > 0) {
if (p < this.DB && (d = this[i] >> p) > 0) {
m = true;
r = int2char(d);
}
while (i >= 0) {
if (p < k) {
d = (this[i] & ((1 << p) - 1)) << (k - p);
d |= this[--i] >> (p += this.DB - k);
} else {
d = (this[i] >> (p -= k)) & km;
if (p <= 0) {
p += this.DB;
--i;
}
}
if (d > 0) m = true;
if (m) r += int2char(d);
}
}
return m ? r : "0";
};
// (public) -this
BigInteger.prototype.negate = function () {
var r = nbi();
BigInteger.ZERO.subTo(this, r);
return r;
};
// (public) |this|
BigInteger.prototype.abs = function () {
return (this.s < 0) ? this.negate() : this;
};
// (public) return + if this > a, - if this < a, 0 if equal
BigInteger.prototype.compareTo = function (a) {
var r = this.s - a.s;
if (r != 0) return r;
var i = this.t;
r = i - a.t;
if (r != 0) return (this.s < 0) ? -r : r;
while (--i >= 0)
if ((r = this[i] - a[i]) != 0) return r;
return 0;
}
// (public) return the number of bits in "this"
BigInteger.prototype.bitLength = function () {
if (this.t <= 0) return 0;
return this.DB * (this.t - 1) + nbits(this[this.t - 1] ^ (this.s & this.DM));
};
// (public) this mod a
BigInteger.prototype.mod = function (a) {
var r = nbi();
this.abs().divRemTo(a, null, r);
if (this.s < 0 && r.compareTo(BigInteger.ZERO) > 0) a.subTo(r, r);
return r;
}
// (public) this^e % m, 0 <= e < 2^32
BigInteger.prototype.modPowInt = function (e, m) {
var z;
if (e < 256 || m.isEven()) z = new Classic(m);
else z = new Montgomery(m);
return this.exp(e, z);
};
// "constants"
BigInteger.ZERO = nbv(0);
BigInteger.ONE = nbv(1);
// Copyright (c) 2005-2009 Tom Wu
// All Rights Reserved.
// See "LICENSE" for details.
// Extended JavaScript BN functions, required for RSA private ops.
// Version 1.1: new BigInteger("0", 10) returns "proper" zero
// Version 1.2: square() API, isProbablePrime fix
// return index of lowest 1-bit in x, x < 2^31
function lbit(x) {
if (x == 0) return -1;
var r = 0;
if ((x & 0xffff) == 0) {
x >>= 16;
r += 16;
}
if ((x & 0xff) == 0) {
x >>= 8;
r += 8;
}
if ((x & 0xf) == 0) {
x >>= 4;
r += 4;
}
if ((x & 3) == 0) {
x >>= 2;
r += 2;
}
if ((x & 1) == 0) ++r;
return r;
}
// return number of 1 bits in x
function cbit(x) {
var r = 0;
while (x != 0) {
x &= x - 1;
++r;
}
return r;
}
var lowprimes = [2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83,
89,
97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191,
193,
197, 199, 211, 223, 227, 229, 233, 239, 241, 251, 257, 263, 269, 271, 277, 281, 283, 293, 307,
311,
313, 317, 331, 337, 347, 349, 353, 359, 367, 373, 379, 383, 389, 397, 401, 409, 419, 421, 431,
433,
439, 443, 449, 457, 461, 463, 467, 479, 487, 491, 499, 503, 509, 521, 523, 541, 547, 557, 563,
569,
571, 577, 587, 593, 599, 601, 607, 613, 617, 619, 631, 641, 643, 647, 653, 659, 661, 673, 677,
683,
691, 701, 709, 719, 727, 733, 739, 743, 751, 757, 761, 769, 773, 787, 797, 809, 811, 821, 823,
827,
829, 839, 853, 857, 859, 863, 877, 881, 883, 887, 907, 911, 919, 929, 937, 941, 947, 953, 967,
971,
977, 983, 991, 997
];
var lplim = (1 << 26) / lowprimes[lowprimes.length - 1];
// (protected) return x s.t. r^x < DV
BigInteger.prototype.chunkSize = function (r) {
return Math.floor(Math.LN2 * this.DB / Math.log(r));
};
// (protected) convert to radix string
BigInteger.prototype.toRadix = function (b) {
if (b == null) b = 10;
if (this.signum() == 0 || b < 2 || b > 36) return "0";
var cs = this.chunkSize(b);
var a = Math.pow(b, cs);
var d = nbv(a),
y = nbi(),
z = nbi(),
r = "";
this.divRemTo(d, y, z);
while (y.signum() > 0) {
r = (a + z.intValue()).toString(b).substr(1) + r;
y.divRemTo(d, y, z);
}
return z.intValue().toString(b) + r;
};
// (protected) convert from radix string
BigInteger.prototype.fromRadix = function (s, b) {
this.fromInt(0);
if (b == null) b = 10;
var cs = this.chunkSize(b);
var d = Math.pow(b, cs),
mi = false,
j = 0,
w = 0;
for (var i = 0; i < s.length; ++i) {
var x = intAt(s, i);
if (x < 0) {
if (s.charAt(i) == "-" && this.signum() == 0) mi = true;
continue;
}
w = b * w + x;
if (++j >= cs) {
this.dMultiply(d);
this.dAddOffset(w, 0);
j = 0;
w = 0;
}
}
if (j > 0) {
this.dMultiply(Math.pow(b, j));
this.dAddOffset(w, 0);
}
if (mi) BigInteger.ZERO.subTo(this, this);
};
// (protected) alternate constructor
BigInteger.prototype.fromNumber = function (a, b, c) {
if ("number" == typeof b) {
// new BigInteger(int,int,RNG)
if (a < 2) this.fromInt(1);
else {
this.fromNumber(a, c);
if (!this.testBit(a - 1)) // force MSB set
this.bitwiseTo(BigInteger.ONE.shiftLeft(a - 1), op_or, this);
if (this.isEven()) this.dAddOffset(1, 0); // force odd
while (!this.isProbablePrime(b)) {
this.dAddOffset(2, 0);
if (this.bitLength() > a) this.subTo(BigInteger.ONE.shiftLeft(a - 1), this);
}
}
} else {
// new BigInteger(int,RNG)
var x = new Array(),
t = a & 7;
x.length = (a >> 3) + 1;
b.nextBytes(x);
if (t > 0) x[0] &= ((1 << t) - 1);
else x[0] = 0;
this.fromString(x, 256);
}
};
// (protected) r = this op a (bitwise)
BigInteger.prototype.bitwiseTo = function (a, op, r) {
var i, f, m = Math.min(a.t, this.t);
for (i = 0; i < m; ++i) r[i] = op(this[i], a[i]);
if (a.t < this.t) {
f = a.s & this.DM;
for (i = m; i < this.t; ++i) r[i] = op(this[i], f);
r.t = this.t;
} else {
f = this.s & this.DM;
for (i = m; i < a.t; ++i) r[i] = op(f, a[i]);
r.t = a.t;
}
r.s = op(this.s, a.s);
r.clamp();
};
// (protected) this op (1<<n)
BigInteger.prototype.changeBit = function (n, op) {
var r = BigInteger.ONE.shiftLeft(n);
this.bitwiseTo(r, op, r);
return r;
};
// (protected) r = this + a
BigInteger.prototype.addTo = function (a, r) {
var i = 0,
c = 0,
m = Math.min(a.t, this.t);
while (i < m) {
c += this[i] + a[i];
r[i++] = c & this.DM;
c >>= this.DB;
}
if (a.t < this.t) {
c += a.s;
while (i < this.t) {
c += this[i];
r[i++] = c & this.DM;
c >>= this.DB;
}
c += this.s;
} else {
c += this.s;
while (i < a.t) {
c += a[i];
r[i++] = c & this.DM;
c >>= this.DB;
}
c += a.s;
}
r.s = (c < 0) ? -1 : 0;
if (c > 0) r[i++] = c;
else if (c < -1) r[i++] = this.DV + c;
r.t = i;
r.clamp();
};
// (protected) this *= n, this >= 0, 1 < n < DV
BigInteger.prototype.dMultiply = function (n) {
this[this.t] = this.am(0, n - 1, this, 0, 0, this.t);
++this.t;
this.clamp();
};
// (protected) this += n << w words, this >= 0
BigInteger.prototype.dAddOffset = function (n, w) {
if (n == 0) return;
while (this.t <= w) this[this.t++] = 0;
this[w] += n;
while (this[w] >= this.DV) {
this[w] -= this.DV;
if (++w >= this.t) this[this.t++] = 0;
++this[w];
}
};
// (protected) r = lower n words of "this * a", a.t <= n
// "this" should be the larger one if appropriate.
BigInteger.prototype.multiplyLowerTo = function (a, n, r) {
var i = Math.min(this.t + a.t, n);
r.s = 0; // assumes a,this >= 0
r.t = i;
while (i > 0) r[--i] = 0;
var j;
for (j = r.t - this.t; i < j; ++i) r[i + this.t] = this.am(0, a[i], r, i, 0, this.t);
for (j = Math.min(a.t, n); i < j; ++i) this.am(0, a[i], r, i, 0, n - i);
r.clamp();
};
// (protected) r = "this * a" without lower n words, n > 0
// "this" should be the larger one if appropriate.
BigInteger.prototype.multiplyUpperTo = function (a, n, r) {
--n;
var i = r.t = this.t + a.t - n;
r.s = 0; // assumes a,this >= 0
while (--i >= 0) r[i] = 0;
for (i = Math.max(n - this.t, 0); i < a.t; ++i)
r[this.t + i - n] = this.am(n - i, a[i], r, 0, 0, this.t + i - n);
r.clamp();
r.drShiftTo(1, r);
};
// (protected) this % n, n < 2^26
BigInteger.prototype.modInt = function (n) {
if (n <= 0) return 0;
var d = this.DV % n,
r = (this.s < 0) ? n - 1 : 0;
if (this.t > 0)
if (d == 0) r = this[0] % n;
else
for (var i = this.t - 1; i >= 0; --i) r = (d * r + this[i]) % n;
return r;
};
// (protected) true if probably prime (HAC 4.24, Miller-Rabin)
BigInteger.prototype.millerRabin = function (t) {
var n1 = this.subtract(BigInteger.ONE);
var k = n1.getLowestSetBit();
if (k <= 0) return false;
var r = n1.shiftRight(k);
t = (t + 1) >> 1;
if (t > lowprimes.length) t = lowprimes.length;
var a = nbi();
for (var i = 0; i < t; ++i) {
//Pick bases at random, instead of starting at 2
a.fromInt(lowprimes[Math.floor(Math.random() * lowprimes.length)]);
var y = a.modPow(r, this);
if (y.compareTo(BigInteger.ONE) != 0 && y.compareTo(n1) != 0) {
var j = 1;
while (j++ < k && y.compareTo(n1) != 0) {
y = y.modPowInt(2, this);
if (y.compareTo(BigInteger.ONE) == 0) return false;
}
if (y.compareTo(n1) != 0) return false;
}
}
return true;
};
// (public)
BigInteger.prototype.clone = function () {
var r = nbi();
this.copyTo(r);
return r;
};
// (public) return value as integer
BigInteger.prototype.intValue = function () {
if (this.s < 0) {
if (this.t == 1) return this[0] - this.DV;
else if (this.t == 0) return -1;
} else if (this.t == 1) return this[0];
else if (this.t == 0) return 0;
// assumes 16 < DB < 32
return ((this[1] & ((1 << (32 - this.DB)) - 1)) << this.DB) | this[0];
};
// (public) return value as byte
BigInteger.prototype.byteValue = function () {
return (this.t == 0) ? this.s : (this[0] << 24) >> 24;
};
// (public) return value as short (assumes DB>=16)
BigInteger.prototype.shortValue = function () {
return (this.t == 0) ? this.s : (this[0] << 16) >> 16;
};
// (public) 0 if this == 0, 1 if this > 0
BigInteger.prototype.signum = function () {
if (this.s < 0) return -1;
else if (this.t <= 0 || (this.t == 1 && this[0] <= 0)) return 0;
else return 1;
};
// (public) convert to bigendian byte array
BigInteger.prototype.toByteArray = function () {
var i = this.t,
r = new Array();
r[0] = this.s;
var p = this.DB - (i * this.DB) % 8,
d, k = 0;
if (i-- > 0) {
if (p < this.DB && (d = this[i] >> p) != (this.s & this.DM) >> p)
r[k++] = d | (this.s << (this.DB - p));
while (i >= 0) {
if (p < 8) {
d = (this[i] & ((1 << p) - 1)) << (8 - p);
d |= this[--i] >> (p += this.DB - 8);
} else {
d = (this[i] >> (p -= 8)) & 0xff;
if (p <= 0) {
p += this.DB;
--i;
}
}
if ((d & 0x80) != 0) d |= -256;
if (k == 0 && (this.s & 0x80) != (d & 0x80)) ++k;
if (k > 0 || d != this.s) r[k++] = d;
}
}
return r;
};
BigInteger.prototype.equals = function (a) {
return (this.compareTo(a) == 0);
};
BigInteger.prototype.min = function (a) {
return (this.compareTo(a) < 0) ? this : a;
};
BigInteger.prototype.max = function (a) {
return (this.compareTo(a) > 0) ? this : a;
};
// (public) this & a
function op_and(x, y) {
return x & y;
}
BigInteger.prototype.and = function (a) {
var r = nbi();
this.bitwiseTo(a, op_and, r);
return r;
};
// (public) this | a
function op_or(x, y) {
return x | y;
}
BigInteger.prototype.or = function (a) {
var r = nbi();
this.bitwiseTo(a, op_or, r);
return r;
};
// (public) this ^ a
function op_xor(x, y) {
return x ^ y;
}
BigInteger.prototype.xor = function (a) {
var r = nbi();
this.bitwiseTo(a, op_xor, r);
return r;
};
// (public) this & ~a
function op_andnot(x, y) {
return x & ~y;
}
BigInteger.prototype.andNot = function (a) {
var r = nbi();
this.bitwiseTo(a, op_andnot, r);
return r;
};
// (public) ~this
BigInteger.prototype.not = function () {
var r = nbi();
for (var i = 0; i < this.t; ++i) r[i] = this.DM & ~this[i];
r.t = this.t;
r.s = ~this.s;
return r;
};
// (public) this << n
BigInteger.prototype.shiftLeft = function (n) {
var r = nbi();
if (n < 0) this.rShiftTo(-n, r);
else this.lShiftTo(n, r);
return r;
};
// (public) this >> n
BigInteger.prototype.shiftRight = function (n) {
var r = nbi();
if (n < 0) this.lShiftTo(-n, r);
else this.rShiftTo(n, r);
return r;
};
// (public) returns index of lowest 1-bit (or -1 if none)
BigInteger.prototype.getLowestSetBit = function () {
for (var i = 0; i < this.t; ++i)
if (this[i] != 0) return i * this.DB + lbit(this[i]);
if (this.s < 0) return this.t * this.DB;
return -1;
};
// (public) return number of set bits
BigInteger.prototype.bitCount = function () {
var r = 0,
x = this.s & this.DM;
for (var i = 0; i < this.t; ++i) r += cbit(this[i] ^ x);
return r;
};
// (public) true iff nth bit is set
BigInteger.prototype.testBit = function (n) {
var j = Math.floor(n / this.DB);
if (j >= this.t) return (this.s != 0);
return ((this[j] & (1 << (n % this.DB))) != 0);
};
// (public) this | (1<<n)
BigInteger.prototype.setBit = function (n) {
return this.changeBit(n, op_or);
};
// (public) this & ~(1<<n)
BigInteger.prototype.clearBit = function (n) {
return this.changeBit(n, op_andnot);
};
// (public) this ^ (1<<n)
BigInteger.prototype.flipBit = function (n) {
return this.changeBit(n, op_xor);
};
// (public) this + a
BigInteger.prototype.add = function (a) {
var r = nbi();
this.addTo(a, r);
return r;
};
// (public) this - a
BigInteger.prototype.subtract = function (a) {
var r = nbi();
this.subTo(a, r);
return r;
};
// (public) this * a
BigInteger.prototype.multiply = function (a) {
var r = nbi();
this.multiplyTo(a, r);
return r;
};
// (public) this / a
BigInteger.prototype.divide = function (a) {
var r = nbi();
this.divRemTo(a, r, null);
return r;
};
// (public) this % a
BigInteger.prototype.remainder = function (a) {
var r = nbi();
this.divRemTo(a, null, r);
return r;
};
// (public) [this/a,this%a]
BigInteger.prototype.divideAndRemainder = function (a) {
var q = nbi(),
r = nbi();
this.divRemTo(a, q, r);
return new Array(q, r);
};
// (public) this^e % m (HAC 14.85)
BigInteger.prototype.modPow = function (e, m) {
var i = e.bitLength(),
k, r = nbv(1),
z;
if (i <= 0) return r;
else if (i < 18) k = 1;
else if (i < 48) k = 3;
else if (i < 144) k = 4;
else if (i < 768) k = 5;
else k = 6;
if (i < 8)
z = new Classic(m);
else if (m.isEven())
z = new Barrett(m);
else
z = new Montgomery(m);
// precomputation
var g = new Array(),
n = 3,
k1 = k - 1,
km = (1 << k) - 1;
g[1] = z.convert(this);
if (k > 1) {
var g2 = nbi();
z.sqrTo(g[1], g2);
while (n <= km) {
g[n] = nbi();
z.mulTo(g2, g[n - 2], g[n]);
n += 2;
}
}
var j = e.t - 1,
w, is1 = true,
r2 = nbi(),
t;
i = nbits(e[j]) - 1;
while (j >= 0) {
if (i >= k1) w = (e[j] >> (i - k1)) & km;
else {
w = (e[j] & ((1 << (i + 1)) - 1)) << (k1 - i);
if (j > 0) w |= e[j - 1] >> (this.DB + i - k1);
}
n = k;
while ((w & 1) == 0) {
w >>= 1;
--n;
}
if ((i -= n) < 0) {
i += this.DB;
--j;
}
if (is1) { // ret == 1, don't bother squaring or multiplying it
g[w].copyTo(r);
is1 = false;
} else {
while (n > 1) {
z.sqrTo(r, r2);
z.sqrTo(r2, r);
n -= 2;
}
if (n > 0) z.sqrTo(r, r2);
else {
t = r;
r = r2;
r2 = t;
}
z.mulTo(r2, g[w], r);
}
while (j >= 0 && (e[j] & (1 << i)) == 0) {
z.sqrTo(r, r2);
t = r;
r = r2;
r2 = t;
if (--i < 0) {
i = this.DB - 1;
--j;
}
}
}
return z.revert(r);
};
// (public) 1/this % m (HAC 14.61)
BigInteger.prototype.modInverse = function (m) {
var ac = m.isEven();
if (this.signum() === 0) throw new Error('division by zero');
if ((this.isEven() && ac) || m.signum() == 0) return BigInteger.ZERO;
var u = m.clone(),
v = this.clone();
var a = nbv(1),
b = nbv(0),
c = nbv(0),
d = nbv(1);
while (u.signum() != 0) {
while (u.isEven()) {
u.rShiftTo(1, u);
if (ac) {
if (!a.isEven() || !b.isEven()) {
a.addTo(this, a);
b.subTo(m, b);
}
a.rShiftTo(1, a);
} else if (!b.isEven()) b.subTo(m, b);
b.rShiftTo(1, b);
}
while (v.isEven()) {
v.rShiftTo(1, v);
if (ac) {
if (!c.isEven() || !d.isEven()) {
c.addTo(this, c);
d.subTo(m, d);
}
c.rShiftTo(1, c);
} else if (!d.isEven()) d.subTo(m, d);
d.rShiftTo(1, d);
}
if (u.compareTo(v) >= 0) {
u.subTo(v, u);
if (ac) a.subTo(c, a);
b.subTo(d, b);
} else {
v.subTo(u, v);
if (ac) c.subTo(a, c);
d.subTo(b, d);
}
}
if (v.compareTo(BigInteger.ONE) != 0) return BigInteger.ZERO;
while (d.compareTo(m) >= 0) d.subTo(m, d);
while (d.signum() < 0) d.addTo(m, d);
return d;
};
// (public) this^e
BigInteger.prototype.pow = function (e) {
return this.exp(e, new NullExp());
};
// (public) gcd(this,a) (HAC 14.54)
BigInteger.prototype.gcd = function (a) {
var x = (this.s < 0) ? this.negate() : this.clone();
var y = (a.s < 0) ? a.negate() : a.clone();
if (x.compareTo(y) < 0) {
var t = x;
x = y;
y = t;
}
var i = x.getLowestSetBit(),
g = y.getLowestSetBit();
if (g < 0) return x;
if (i < g) g = i;
if (g > 0) {
x.rShiftTo(g, x);
y.rShiftTo(g, y);
}
while (x.signum() > 0) {
if ((i = x.getLowestSetBit()) > 0) x.rShiftTo(i, x);
if ((i = y.getLowestSetBit()) > 0) y.rShiftTo(i, y);
if (x.compareTo(y) >= 0) {
x.subTo(y, x);
x.rShiftTo(1, x);
} else {
y.subTo(x, y);
y.rShiftTo(1, y);
}
}
if (g > 0) y.lShiftTo(g, y);
return y;
};
// (public) test primality with certainty >= 1-.5^t
BigInteger.prototype.isProbablePrime = function (t) {
var i, x = this.abs();
if (x.t == 1 && x[0] <= lowprimes[lowprimes.length - 1]) {
for (i = 0; i < lowprimes.length; ++i)
if (x[0] == lowprimes[i]) return true;
return false;
}
if (x.isEven()) return false;
i = 1;
while (i < lowprimes.length) {
var m = lowprimes[i],
j = i + 1;
while (j < lowprimes.length && m < lplim) m *= lowprimes[j++];
m = x.modInt(m);
while (i < j)
if (m % lowprimes[i++] == 0) return false;
}
return x.millerRabin(t);
};
// JSBN-specific extension
// (public) this^2
BigInteger.prototype.square = function () {
var r = nbi();
this.squareTo(r);
return r;
};
// NOTE: BigInteger interfaces not implemented in jsbn:
// BigInteger(int signum, byte[] magnitude)
// double doubleValue()
// float floatValue()
// int hashCode()
// long longValue()
// static BigInteger valueOf(long val)
// Copyright Stephan Thomas (start) --- //
// https://raw.github.com/bitcoinjs/bitcoinjs-lib/07f9d55ccb6abd962efb6befdd37671f85ea4ff9/src/util.js
// BigInteger monkey patching
BigInteger.valueOf = nbv;
/**
* Returns a byte array representation of the big integer.
*
* This returns the absolute of the contained value in big endian
* form. A value of zero results in an empty array.
*/
BigInteger.prototype.toByteArrayUnsigned = function () {
var ba = this.abs().toByteArray();
if (ba.length) {
if (ba[0] == 0) {
ba = ba.slice(1);
}
return ba.map(function (v) {
return (v < 0) ? v + 256 : v;
});
} else {
// Empty array, nothing to do
return ba;
}
};
/**
* Turns a byte array into a big integer.
*
* This function will interpret a byte array as a big integer in big
* endian notation and ignore leading zeros.
*/
BigInteger.fromByteArrayUnsigned = function (ba) {
if (!ba.length) {
return ba.valueOf(0);
} else if (ba[0] & 0x80) {
// Prepend a zero so the BigInteger class doesn't mistake this
// for a negative integer.
return new BigInteger([0].concat(ba));
} else {
return new BigInteger(ba);
}
};
/**
* Converts big integer to signed byte representation.
*
* The format for this value uses a the most significant bit as a sign
* bit. If the most significant bit is already occupied by the
* absolute value, an extra byte is prepended and the sign bit is set
* there.
*
* Examples:
*
* 0 => 0x00
* 1 => 0x01
* -1 => 0x81
* 127 => 0x7f
* -127 => 0xff
* 128 => 0x0080
* -128 => 0x8080
* 255 => 0x00ff
* -255 => 0x80ff
* 16300 => 0x3fac
* -16300 => 0xbfac
* 62300 => 0x00f35c
* -62300 => 0x80f35c
*/
BigInteger.prototype.toByteArraySigned = function () {
var val = this.abs().toByteArrayUnsigned();
var neg = this.compareTo(BigInteger.ZERO) < 0;
if (neg) {
if (val[0] & 0x80) {
val.unshift(0x80);
} else {
val[0] |= 0x80;
}
} else {
if (val[0] & 0x80) {
val.unshift(0x00);
}
}
return val;
};
/**
* Parse a signed big integer byte representation.
*
* For details on the format please see BigInteger.toByteArraySigned.
*/
BigInteger.fromByteArraySigned = function (ba) {
// Check for negative value
if (ba[0] & 0x80) {
// Remove sign bit
ba[0] &= 0x7f;
return BigInteger.fromByteArrayUnsigned(ba).negate();
} else {
return BigInteger.fromByteArrayUnsigned(ba);
}
};
// Copyright Stephan Thomas (end) --- //
// ****** REDUCTION ******* //
// Modular reduction using "classic" algorithm
var Classic = window.Classic = function Classic(m) {
this.m = m;
}
Classic.prototype.convert = function (x) {
if (x.s < 0 || x.compareTo(this.m) >= 0) return x.mod(this.m);
else return x;
};
Classic.prototype.revert = function (x) {
return x;
};
Classic.prototype.reduce = function (x) {
x.divRemTo(this.m, null, x);
};
Classic.prototype.mulTo = function (x, y, r) {
x.multiplyTo(y, r);
this.reduce(r);
};
Classic.prototype.sqrTo = function (x, r) {
x.squareTo(r);
this.reduce(r);
};
// Montgomery reduction
var Montgomery = window.Montgomery = function Montgomery(m) {
this.m = m;
this.mp = m.invDigit();
this.mpl = this.mp & 0x7fff;
this.mph = this.mp >> 15;
this.um = (1 << (m.DB - 15)) - 1;
this.mt2 = 2 * m.t;
}
// xR mod m
Montgomery.prototype.convert = function (x) {
var r = nbi();
x.abs().dlShiftTo(this.m.t, r);
r.divRemTo(this.m, null, r);
if (x.s < 0 && r.compareTo(BigInteger.ZERO) > 0) this.m.subTo(r, r);
return r;
}
// x/R mod m
Montgomery.prototype.revert = function (x) {
var r = nbi();
x.copyTo(r);
this.reduce(r);
return r;
};
// x = x/R mod m (HAC 14.32)
Montgomery.prototype.reduce = function (x) {
while (x.t <= this.mt2) // pad x so am has enough room later
x[x.t++] = 0;
for (var i = 0; i < this.m.t; ++i) {
// faster way of calculating u0 = x[i]*mp mod DV
var j = x[i] & 0x7fff;
var u0 = (j * this.mpl + (((j * this.mph + (x[i] >> 15) * this.mpl) & this.um) << 15)) & x.DM;
// use am to combine the multiply-shift-add into one call
j = i + this.m.t;
x[j] += this.m.am(0, u0, x, i, 0, this.m.t);
// propagate carry
while (x[j] >= x.DV) {
x[j] -= x.DV;
x[++j]++;
}
}
x.clamp();
x.drShiftTo(this.m.t, x);
if (x.compareTo(this.m) >= 0) x.subTo(this.m, x);
};
// r = "xy/R mod m"; x,y != r
Montgomery.prototype.mulTo = function (x, y, r) {
x.multiplyTo(y, r);
this.reduce(r);
};
// r = "x^2/R mod m"; x != r
Montgomery.prototype.sqrTo = function (x, r) {
x.squareTo(r);
this.reduce(r);
};
// A "null" reducer
var NullExp = window.NullExp = function NullExp() {}
NullExp.prototype.convert = function (x) {
return x;
};
NullExp.prototype.revert = function (x) {
return x;
};
NullExp.prototype.mulTo = function (x, y, r) {
x.multiplyTo(y, r);
};
NullExp.prototype.sqrTo = function (x, r) {
x.squareTo(r);
};
// Barrett modular reduction
var Barrett = window.Barrett = function Barrett(m) {
// setup Barrett
this.r2 = nbi();
this.q3 = nbi();
BigInteger.ONE.dlShiftTo(2 * m.t, this.r2);
this.mu = this.r2.divide(m);
this.m = m;
}
Barrett.prototype.convert = function (x) {
if (x.s < 0 || x.t > 2 * this.m.t) return x.mod(this.m);
else if (x.compareTo(this.m) < 0) return x;
else {
var r = nbi();
x.copyTo(r);
this.reduce(r);
return r;
}
};
Barrett.prototype.revert = function (x) {
return x;
};
// x = x mod m (HAC 14.42)
Barrett.prototype.reduce = function (x) {
x.drShiftTo(this.m.t - 1, this.r2);
if (x.t > this.m.t + 1) {
x.t = this.m.t + 1;
x.clamp();
}
this.mu.multiplyUpperTo(this.r2, this.m.t + 1, this.q3);
this.m.multiplyLowerTo(this.q3, this.m.t + 1, this.r2);
while (x.compareTo(this.r2) < 0) x.dAddOffset(1, this.m.t + 1);
x.subTo(this.r2, x);
while (x.compareTo(this.m) >= 0) x.subTo(this.m, x);
};
// r = x*y mod m; x,y != r
Barrett.prototype.mulTo = function (x, y, r) {
x.multiplyTo(y, r);
this.reduce(r);
};
// r = x^2 mod m; x != r
Barrett.prototype.sqrTo = function (x, r) {
x.squareTo(r);
this.reduce(r);
};
})();
// BigInteger interfaces not implemented in jsbn:
// BigInteger(int signum, byte[] magnitude)
// double doubleValue()
// float floatValue()
// int hashCode()
// long longValue()
// static BigInteger valueOf(long val)
//ellipticcurve.js
/*!
* Basic Javascript Elliptic Curve implementation
* Ported loosely from BouncyCastle's Java EC code
* Only Fp curves implemented for now
*
* Copyright Tom Wu, bitaddress.org BSD License.
* http://www-cs-students.stanford.edu/~tjw/jsbn/LICENSE
*/
(function () {
// Constructor function of Global EllipticCurve object
var ec = window.EllipticCurve = function () {};
// ----------------
// ECFieldElementFp constructor
// q instanceof BigInteger
// x instanceof BigInteger
ec.FieldElementFp = function (q, x) {
this.x = x;
// TODO if(x.compareTo(q) >= 0) error
this.q = q;
};
ec.FieldElementFp.prototype.equals = function (other) {
if (other == this) return true;
return (this.q.equals(other.q) && this.x.equals(other.x));
};
ec.FieldElementFp.prototype.toBigInteger = function () {
return this.x;
};
ec.FieldElementFp.prototype.negate = function () {
return new ec.FieldElementFp(this.q, this.x.negate().mod(this.q));
};
ec.FieldElementFp.prototype.add = function (b) {
return new ec.FieldElementFp(this.q, this.x.add(b.toBigInteger()).mod(this.q));
};
ec.FieldElementFp.prototype.subtract = function (b) {
return new ec.FieldElementFp(this.q, this.x.subtract(b.toBigInteger()).mod(this.q));
};
ec.FieldElementFp.prototype.multiply = function (b) {
return new ec.FieldElementFp(this.q, this.x.multiply(b.toBigInteger()).mod(this.q));
};
ec.FieldElementFp.prototype.square = function () {
return new ec.FieldElementFp(this.q, this.x.square().mod(this.q));
};
ec.FieldElementFp.prototype.divide = function (b) {
return new ec.FieldElementFp(this.q, this.x.multiply(b.toBigInteger().modInverse(this.q)).mod(
this.q));
};
ec.FieldElementFp.prototype.getByteLength = function () {
return Math.floor((this.toBigInteger().bitLength() + 7) / 8);
};
// D.1.4 91
/**
* return a sqrt root - the routine verifies that the calculation
* returns the right value - if none exists it returns null.
*
* Copyright (c) 2000 - 2011 The Legion Of The Bouncy Castle (http://www.bouncycastle.org)
* Ported to JavaScript by bitaddress.org
*/
ec.FieldElementFp.prototype.sqrt = function () {
if (!this.q.testBit(0)) throw new Error("even value of q");
// p mod 4 == 3
if (this.q.testBit(1)) {
// z = g^(u+1) + p, p = 4u + 3
var z = new ec.FieldElementFp(this.q, this.x.modPow(this.q.shiftRight(2).add(BigInteger.ONE),
this.q));
return z.square().equals(this) ? z : null;
}
// p mod 4 == 1
var qMinusOne = this.q.subtract(BigInteger.ONE);
var legendreExponent = qMinusOne.shiftRight(1);
if (!(this.x.modPow(legendreExponent, this.q).equals(BigInteger.ONE))) return null;
var u = qMinusOne.shiftRight(2);
var k = u.shiftLeft(1).add(BigInteger.ONE);
var Q = this.x;
var fourQ = Q.shiftLeft(2).mod(this.q);
var U, V;
do {
var rand = new SecureRandom();
var P;
do {
P = new BigInteger(this.q.bitLength(), rand);
}
while (P.compareTo(this.q) >= 0 || !(P.multiply(P).subtract(fourQ).modPow(legendreExponent,
this.q).equals(qMinusOne)));
var result = ec.FieldElementFp.fastLucasSequence(this.q, P, Q, k);
U = result[0];
V = result[1];
if (V.multiply(V).mod(this.q).equals(fourQ)) {
// Integer division by 2, mod q
if (V.testBit(0)) {
V = V.add(this.q);
}
V = V.shiftRight(1);
return new ec.FieldElementFp(this.q, V);
}
}
while (U.equals(BigInteger.ONE) || U.equals(qMinusOne));
return null;
};
/*
* Copyright (c) 2000 - 2011 The Legion Of The Bouncy Castle (http://www.bouncycastle.org)
* Ported to JavaScript by bitaddress.org
*/
ec.FieldElementFp.fastLucasSequence = function (p, P, Q, k) {
// TODO Research and apply "common-multiplicand multiplication here"
var n = k.bitLength();
var s = k.getLowestSetBit();
var Uh = BigInteger.ONE;
var Vl = BigInteger.TWO;
var Vh = P;
var Ql = BigInteger.ONE;
var Qh = BigInteger.ONE;
for (var j = n - 1; j >= s + 1; --j) {
Ql = Ql.multiply(Qh).mod(p);
if (k.testBit(j)) {
Qh = Ql.multiply(Q).mod(p);
Uh = Uh.multiply(Vh).mod(p);
Vl = Vh.multiply(Vl).subtract(P.multiply(Ql)).mod(p);
Vh = Vh.multiply(Vh).subtract(Qh.shiftLeft(1)).mod(p);
} else {
Qh = Ql;
Uh = Uh.multiply(Vl).subtract(Ql).mod(p);
Vh = Vh.multiply(Vl).subtract(P.multiply(Ql)).mod(p);
Vl = Vl.multiply(Vl).subtract(Ql.shiftLeft(1)).mod(p);
}
}
Ql = Ql.multiply(Qh).mod(p);
Qh = Ql.multiply(Q).mod(p);
Uh = Uh.multiply(Vl).subtract(Ql).mod(p);
Vl = Vh.multiply(Vl).subtract(P.multiply(Ql)).mod(p);
Ql = Ql.multiply(Qh).mod(p);
for (var j = 1; j <= s; ++j) {
Uh = Uh.multiply(Vl).mod(p);
Vl = Vl.multiply(Vl).subtract(Ql.shiftLeft(1)).mod(p);
Ql = Ql.multiply(Ql).mod(p);
}
return [Uh, Vl];
};
// ----------------
// ECPointFp constructor
ec.PointFp = function (curve, x, y, z, compressed) {
this.curve = curve;
this.x = x;
this.y = y;
// Projective coordinates: either zinv == null or z * zinv == 1
// z and zinv are just BigIntegers, not fieldElements
if (z == null) {
this.z = BigInteger.ONE;
} else {
this.z = z;
}
this.zinv = null;
// compression flag
this.compressed = !!compressed;
};
ec.PointFp.prototype.getX = function () {
if (this.zinv == null) {
this.zinv = this.z.modInverse(this.curve.q);
}
var r = this.x.toBigInteger().multiply(this.zinv);
this.curve.reduce(r);
return this.curve.fromBigInteger(r);
};
ec.PointFp.prototype.getY = function () {
if (this.zinv == null) {
this.zinv = this.z.modInverse(this.curve.q);
}
var r = this.y.toBigInteger().multiply(this.zinv);
this.curve.reduce(r);
return this.curve.fromBigInteger(r);
};
ec.PointFp.prototype.equals = function (other) {
if (other == this) return true;
if (this.isInfinity()) return other.isInfinity();
if (other.isInfinity()) return this.isInfinity();
var u, v;
// u = Y2 * Z1 - Y1 * Z2
u = other.y.toBigInteger().multiply(this.z).subtract(this.y.toBigInteger().multiply(other.z)).mod(
this.curve.q);
if (!u.equals(BigInteger.ZERO)) return false;
// v = X2 * Z1 - X1 * Z2
v = other.x.toBigInteger().multiply(this.z).subtract(this.x.toBigInteger().multiply(other.z)).mod(
this.curve.q);
return v.equals(BigInteger.ZERO);
};
ec.PointFp.prototype.isInfinity = function () {
if ((this.x == null) && (this.y == null)) return true;
return this.z.equals(BigInteger.ZERO) && !this.y.toBigInteger().equals(BigInteger.ZERO);
};
ec.PointFp.prototype.negate = function () {
return new ec.PointFp(this.curve, this.x, this.y.negate(), this.z);
};
ec.PointFp.prototype.add = function (b) {
if (this.isInfinity()) return b;
if (b.isInfinity()) return this;
// u = Y2 * Z1 - Y1 * Z2
var u = b.y.toBigInteger().multiply(this.z).subtract(this.y.toBigInteger().multiply(b.z)).mod(
this.curve.q);
// v = X2 * Z1 - X1 * Z2
var v = b.x.toBigInteger().multiply(this.z).subtract(this.x.toBigInteger().multiply(b.z)).mod(
this.curve.q);
if (BigInteger.ZERO.equals(v)) {
if (BigInteger.ZERO.equals(u)) {
return this.twice(); // this == b, so double
}
return this.curve.getInfinity(); // this = -b, so infinity
}
var THREE = new BigInteger("3");
var x1 = this.x.toBigInteger();
var y1 = this.y.toBigInteger();
var x2 = b.x.toBigInteger();
var y2 = b.y.toBigInteger();
var v2 = v.square();
var v3 = v2.multiply(v);
var x1v2 = x1.multiply(v2);
var zu2 = u.square().multiply(this.z);
// x3 = v * (z2 * (z1 * u^2 - 2 * x1 * v^2) - v^3)
var x3 = zu2.subtract(x1v2.shiftLeft(1)).multiply(b.z).subtract(v3).multiply(v).mod(this.curve.q);
// y3 = z2 * (3 * x1 * u * v^2 - y1 * v^3 - z1 * u^3) + u * v^3
var y3 = x1v2.multiply(THREE).multiply(u).subtract(y1.multiply(v3)).subtract(zu2.multiply(u)).multiply(
b.z).add(u.multiply(v3)).mod(this.curve.q);
// z3 = v^3 * z1 * z2
var z3 = v3.multiply(this.z).multiply(b.z).mod(this.curve.q);
return new ec.PointFp(this.curve, this.curve.fromBigInteger(x3), this.curve.fromBigInteger(y3),
z3);
};
ec.PointFp.prototype.twice = function () {
if (this.isInfinity()) return this;
if (this.y.toBigInteger().signum() == 0) return this.curve.getInfinity();
// TODO: optimized handling of constants
var THREE = new BigInteger("3");
var x1 = this.x.toBigInteger();
var y1 = this.y.toBigInteger();
var y1z1 = y1.multiply(this.z);
var y1sqz1 = y1z1.multiply(y1).mod(this.curve.q);
var a = this.curve.a.toBigInteger();
// w = 3 * x1^2 + a * z1^2
var w = x1.square().multiply(THREE);
if (!BigInteger.ZERO.equals(a)) {
w = w.add(this.z.square().multiply(a));
}
w = w.mod(this.curve.q);
//this.curve.reduce(w);
// x3 = 2 * y1 * z1 * (w^2 - 8 * x1 * y1^2 * z1)
var x3 = w.square().subtract(x1.shiftLeft(3).multiply(y1sqz1)).shiftLeft(1).multiply(y1z1).mod(
this.curve.q);
// y3 = 4 * y1^2 * z1 * (3 * w * x1 - 2 * y1^2 * z1) - w^3
var y3 = w.multiply(THREE).multiply(x1).subtract(y1sqz1.shiftLeft(1)).shiftLeft(2).multiply(
y1sqz1).subtract(w.square().multiply(w)).mod(this.curve.q);
// z3 = 8 * (y1 * z1)^3
var z3 = y1z1.square().multiply(y1z1).shiftLeft(3).mod(this.curve.q);
return new ec.PointFp(this.curve, this.curve.fromBigInteger(x3), this.curve.fromBigInteger(y3),
z3);
};
// Simple NAF (Non-Adjacent Form) multiplication algorithm
// TODO: modularize the multiplication algorithm
ec.PointFp.prototype.multiply = function (k) {
if (this.isInfinity()) return this;
if (k.signum() == 0) return this.curve.getInfinity();
var e = k;
var h = e.multiply(new BigInteger("3"));
var neg = this.negate();
var R = this;
var i;
for (i = h.bitLength() - 2; i > 0; --i) {
R = R.twice();
var hBit = h.testBit(i);
var eBit = e.testBit(i);
if (hBit != eBit) {
R = R.add(hBit ? this : neg);
}
}
return R;
};
// Compute this*j + x*k (simultaneous multiplication)
ec.PointFp.prototype.multiplyTwo = function (j, x, k) {
var i;
if (j.bitLength() > k.bitLength())
i = j.bitLength() - 1;
else
i = k.bitLength() - 1;
var R = this.curve.getInfinity();
var both = this.add(x);
while (i >= 0) {
R = R.twice();
if (j.testBit(i)) {
if (k.testBit(i)) {
R = R.add(both);
} else {
R = R.add(this);
}
} else {
if (k.testBit(i)) {
R = R.add(x);
}
}
--i;
}
return R;
};
// patched by bitaddress.org and Casascius for use with Bitcoin.ECKey
// patched by coretechs to support compressed public keys
ec.PointFp.prototype.getEncoded = function (compressed) {
var x = this.getX().toBigInteger();
var y = this.getY().toBigInteger();
var len = 32; // integerToBytes will zero pad if integer is less than 32 bytes. 32 bytes length is required by the Bitcoin protocol.
var enc = ec.integerToBytes(x, len);
// when compressed prepend byte depending if y point is even or odd
if (compressed) {
if (y.isEven()) {
enc.unshift(0x02);
} else {
enc.unshift(0x03);
}
} else {
enc.unshift(0x04);
enc = enc.concat(ec.integerToBytes(y, len)); // uncompressed public key appends the bytes of the y point
}
return enc;
};
ec.PointFp.decodeFrom = function (curve, enc) {
var type = enc[0];
var dataLen = enc.length - 1;
// Extract x and y as byte arrays
var xBa = enc.slice(1, 1 + dataLen / 2);
var yBa = enc.slice(1 + dataLen / 2, 1 + dataLen);
// Prepend zero byte to prevent interpretation as negative integer
xBa.unshift(0);
yBa.unshift(0);
// Convert to BigIntegers
var x = new BigInteger(xBa);
var y = new BigInteger(yBa);
// Return point
return new ec.PointFp(curve, curve.fromBigInteger(x), curve.fromBigInteger(y));
};
ec.PointFp.prototype.add2D = function (b) {
if (this.isInfinity()) return b;
if (b.isInfinity()) return this;
if (this.x.equals(b.x)) {
if (this.y.equals(b.y)) {
// this = b, i.e. this must be doubled
return this.twice();
}
// this = -b, i.e. the result is the point at infinity
return this.curve.getInfinity();
}
var x_x = b.x.subtract(this.x);
var y_y = b.y.subtract(this.y);
var gamma = y_y.divide(x_x);
var x3 = gamma.square().subtract(this.x).subtract(b.x);
var y3 = gamma.multiply(this.x.subtract(x3)).subtract(this.y);
return new ec.PointFp(this.curve, x3, y3);
};
ec.PointFp.prototype.twice2D = function () {
if (this.isInfinity()) return this;
if (this.y.toBigInteger().signum() == 0) {
// if y1 == 0, then (x1, y1) == (x1, -y1)
// and hence this = -this and thus 2(x1, y1) == infinity
return this.curve.getInfinity();
}
var TWO = this.curve.fromBigInteger(BigInteger.valueOf(2));
var THREE = this.curve.fromBigInteger(BigInteger.valueOf(3));
var gamma = this.x.square().multiply(THREE).add(this.curve.a).divide(this.y.multiply(TWO));
var x3 = gamma.square().subtract(this.x.multiply(TWO));
var y3 = gamma.multiply(this.x.subtract(x3)).subtract(this.y);
return new ec.PointFp(this.curve, x3, y3);
};
ec.PointFp.prototype.multiply2D = function (k) {
if (this.isInfinity()) return this;
if (k.signum() == 0) return this.curve.getInfinity();
var e = k;
var h = e.multiply(new BigInteger("3"));
var neg = this.negate();
var R = this;
var i;
for (i = h.bitLength() - 2; i > 0; --i) {
R = R.twice();
var hBit = h.testBit(i);
var eBit = e.testBit(i);
if (hBit != eBit) {
R = R.add2D(hBit ? this : neg);
}
}
return R;
};
ec.PointFp.prototype.isOnCurve = function () {
var x = this.getX().toBigInteger();
var y = this.getY().toBigInteger();
var a = this.curve.getA().toBigInteger();
var b = this.curve.getB().toBigInteger();
var n = this.curve.getQ();
var lhs = y.multiply(y).mod(n);
var rhs = x.multiply(x).multiply(x).add(a.multiply(x)).add(b).mod(n);
return lhs.equals(rhs);
};
ec.PointFp.prototype.toString = function () {
return '(' + this.getX().toBigInteger().toString() + ',' + this.getY().toBigInteger().toString() +
')';
};
/**
* Validate an elliptic curve point.
*
* See SEC 1, section 3.2.2.1: Elliptic Curve Public Key Validation Primitive
*/
ec.PointFp.prototype.validate = function () {
var n = this.curve.getQ();
// Check Q != O
if (this.isInfinity()) {
throw new Error("Point is at infinity.");
}
// Check coordinate bounds
var x = this.getX().toBigInteger();
var y = this.getY().toBigInteger();
if (x.compareTo(BigInteger.ONE) < 0 || x.compareTo(n.subtract(BigInteger.ONE)) > 0) {
throw new Error('x coordinate out of bounds');
}
if (y.compareTo(BigInteger.ONE) < 0 || y.compareTo(n.subtract(BigInteger.ONE)) > 0) {
throw new Error('y coordinate out of bounds');
}
// Check y^2 = x^3 + ax + b (mod n)
if (!this.isOnCurve()) {
throw new Error("Point is not on the curve.");
}
// Check nQ = 0 (Q is a scalar multiple of G)
if (this.multiply(n).isInfinity()) {
// TODO: This check doesn't work - fix.
throw new Error("Point is not a scalar multiple of G.");
}
return true;
};
// ----------------
// ECCurveFp constructor
ec.CurveFp = function (q, a, b) {
this.q = q;
this.a = this.fromBigInteger(a);
this.b = this.fromBigInteger(b);
this.infinity = new ec.PointFp(this, null, null);
this.reducer = new Barrett(this.q);
}
ec.CurveFp.prototype.getQ = function () {
return this.q;
};
ec.CurveFp.prototype.getA = function () {
return this.a;
};
ec.CurveFp.prototype.getB = function () {
return this.b;
};
ec.CurveFp.prototype.equals = function (other) {
if (other == this) return true;
return (this.q.equals(other.q) && this.a.equals(other.a) && this.b.equals(other.b));
};
ec.CurveFp.prototype.getInfinity = function () {
return this.infinity;
};
ec.CurveFp.prototype.fromBigInteger = function (x) {
return new ec.FieldElementFp(this.q, x);
};
ec.CurveFp.prototype.reduce = function (x) {
this.reducer.reduce(x);
};
// for now, work with hex strings because they're easier in JS
// compressed support added by bitaddress.org
ec.CurveFp.prototype.decodePointHex = function (s) {
var firstByte = parseInt(s.substr(0, 2), 16);
switch (firstByte) { // first byte
case 0:
return this.infinity;
case 2: // compressed
case 3: // compressed
var yTilde = firstByte & 1;
var xHex = s.substr(2, s.length - 2);
var X1 = new BigInteger(xHex, 16);
return this.decompressPoint(yTilde, X1);
case 4: // uncompressed
case 6: // hybrid
case 7: // hybrid
var len = (s.length - 2) / 2;
var xHex = s.substr(2, len);
var yHex = s.substr(len + 2, len);
return new ec.PointFp(this,
this.fromBigInteger(new BigInteger(xHex, 16)),
this.fromBigInteger(new BigInteger(yHex, 16)));
default: // unsupported
return null;
}
};
ec.CurveFp.prototype.encodePointHex = function (p) {
if (p.isInfinity()) return "00";
var xHex = p.getX().toBigInteger().toString(16);
var yHex = p.getY().toBigInteger().toString(16);
var oLen = this.getQ().toString(16).length;
if ((oLen % 2) != 0) oLen++;
while (xHex.length < oLen) {
xHex = "0" + xHex;
}
while (yHex.length < oLen) {
yHex = "0" + yHex;
}
return "04" + xHex + yHex;
};
/*
* Copyright (c) 2000 - 2011 The Legion Of The Bouncy Castle (http://www.bouncycastle.org)
* Ported to JavaScript by bitaddress.org
*
* Number yTilde
* BigInteger X1
*/
ec.CurveFp.prototype.decompressPoint = function (yTilde, X1) {
var x = this.fromBigInteger(X1);
var alpha = x.multiply(x.square().add(this.getA())).add(this.getB());
var beta = alpha.sqrt();
// if we can't find a sqrt we haven't got a point on the curve - run!
if (beta == null) throw new Error("Invalid point compression");
var betaValue = beta.toBigInteger();
var bit0 = betaValue.testBit(0) ? 1 : 0;
if (bit0 != yTilde) {
// Use the other root
beta = this.fromBigInteger(this.getQ().subtract(betaValue));
}
return new ec.PointFp(this, x, beta, null, true);
};
ec.fromHex = function (s) {
return new BigInteger(s, 16);
};
ec.integerToBytes = function (i, len) {
var bytes = i.toByteArrayUnsigned();
if (len < bytes.length) {
bytes = bytes.slice(bytes.length - len);
} else
while (len > bytes.length) {
bytes.unshift(0);
}
return bytes;
};
// Named EC curves
// ----------------
// X9ECParameters constructor
ec.X9Parameters = function (curve, g, n, h) {
this.curve = curve;
this.g = g;
this.n = n;
this.h = h;
}
ec.X9Parameters.prototype.getCurve = function () {
return this.curve;
};
ec.X9Parameters.prototype.getG = function () {
return this.g;
};
ec.X9Parameters.prototype.getN = function () {
return this.n;
};
ec.X9Parameters.prototype.getH = function () {
return this.h;
};
// secp256k1 is the Curve used by Bitcoin
ec.secNamedCurves = {
// used by Bitcoin
"secp256k1": function () {
// p = 2^256 - 2^32 - 2^9 - 2^8 - 2^7 - 2^6 - 2^4 - 1
var p = ec.fromHex("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFC2F");
var a = BigInteger.ZERO;
var b = ec.fromHex("7");
var n = ec.fromHex("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141");
var h = BigInteger.ONE;
var curve = new ec.CurveFp(p, a, b);
var G = curve.decodePointHex("04" +
"79BE667EF9DCBBAC55A06295CE870B07029BFCDB2DCE28D959F2815B16F81798" +
"483ADA7726A3C4655DA4FBFC0E1108A8FD17B448A68554199C47D08FFB10D4B8");
return new ec.X9Parameters(curve, G, n, h);
}
};
// secp256k1 called by Bitcoin's ECKEY
ec.getSECCurveByName = function (name) {
if (ec.secNamedCurves[name] == undefined) return null;
return ec.secNamedCurves[name]();
}
})();
//bitTrx.js
(function () {
var bitjs = window.bitjs = function () {};
/* public vars */
bitjs.pub = 0x23; // flochange - changed the prefix to FLO Mainnet PublicKey Prefix 0x23
bitjs.priv = 0xa3; //flochange - changed the prefix to FLO Mainnet Private key prefix 0xa3
bitjs.compressed = false;
/* provide a privkey and return an WIF */
bitjs.privkey2wif = function (h) {
var r = Crypto.util.hexToBytes(h);
if (bitjs.compressed == true) {
r.push(0x01);
}
r.unshift(bitjs.priv);
var hash = Crypto.SHA256(Crypto.SHA256(r, {
asBytes: true
}), {
asBytes: true
});
var checksum = hash.slice(0, 4);
return B58.encode(r.concat(checksum));
}
/* convert a wif key back to a private key */
bitjs.wif2privkey = function (wif) {
var compressed = false;
var decode = B58.decode(wif);
var key = decode.slice(0, decode.length - 4);
key = key.slice(1, key.length);
if (key.length >= 33 && key[key.length - 1] == 0x01) {
key = key.slice(0, key.length - 1);
compressed = true;
}
return {
'privkey': Crypto.util.bytesToHex(key),
'compressed': compressed
};
}
/* convert a wif to a pubkey */
bitjs.wif2pubkey = function (wif) {
var compressed = bitjs.compressed;
var r = bitjs.wif2privkey(wif);
bitjs.compressed = r['compressed'];
var pubkey = bitjs.newPubkey(r['privkey']);
bitjs.compressed = compressed;
return {
'pubkey': pubkey,
'compressed': r['compressed']
};
}
/* convert a wif to a address */
bitjs.wif2address = function (wif) {
var r = bitjs.wif2pubkey(wif);
return {
'address': bitjs.pubkey2address(r['pubkey']),
'compressed': r['compressed']
};
}
/* generate a public key from a private key */
bitjs.newPubkey = function (hash) {
var privateKeyBigInt = BigInteger.fromByteArrayUnsigned(Crypto.util.hexToBytes(hash));
var curve = EllipticCurve.getSECCurveByName("secp256k1");
var curvePt = curve.getG().multiply(privateKeyBigInt);
var x = curvePt.getX().toBigInteger();
var y = curvePt.getY().toBigInteger();
var publicKeyBytes = EllipticCurve.integerToBytes(x, 32);
publicKeyBytes = publicKeyBytes.concat(EllipticCurve.integerToBytes(y, 32));
publicKeyBytes.unshift(0x04);
if (bitjs.compressed == true) {
var publicKeyBytesCompressed = EllipticCurve.integerToBytes(x, 32)
if (y.isEven()) {
publicKeyBytesCompressed.unshift(0x02)
} else {
publicKeyBytesCompressed.unshift(0x03)
}
return Crypto.util.bytesToHex(publicKeyBytesCompressed);
} else {
return Crypto.util.bytesToHex(publicKeyBytes);
}
}
/* provide a public key and return address */
bitjs.pubkey2address = function (h, byte) {
var r = ripemd160(Crypto.SHA256(Crypto.util.hexToBytes(h), {
asBytes: true
}));
r.unshift(byte || bitjs.pub);
var hash = Crypto.SHA256(Crypto.SHA256(r, {
asBytes: true
}), {
asBytes: true
});
var checksum = hash.slice(0, 4);
return B58.encode(r.concat(checksum));
}
bitjs.transaction = function () {
var btrx = {};
btrx.version = 2; //flochange look at this version
btrx.inputs = [];
btrx.outputs = [];
btrx.locktime = 0;
btrx.floData = ""; //flochange .. look at this
btrx.addinput = function (txid, index, scriptPubKey, sequence) {
var o = {};
o.outpoint = {
'hash': txid,
'index': index
};
//o.script = []; Signature and Public Key should be added after singning
o.script = Crypto.util.hexToBytes(scriptPubKey); //push previous output pubkey script
o.sequence = sequence || ((btrx.locktime == 0) ? 4294967295 : 0);
return this.inputs.push(o);
}
btrx.addoutput = function (address, value) {
var o = {};
var buf = [];
var addrDecoded = btrx.addressDecode(address);
o.value = new BigInteger('' + Math.round((value * 1) * 1e8), 10);
buf.push(118); //OP_DUP
buf.push(169); //OP_HASH160
buf.push(addrDecoded.length);
buf = buf.concat(addrDecoded); // address in bytes
buf.push(136); //OP_EQUALVERIFY
buf.push(172); // OP_CHECKSIG
o.script = buf;
return this.outputs.push(o);
}
btrx.addflodata = function (txcomments) { // flochange - this whole function needs to be done
this.floData = txcomments;
return this.floData; //flochange .. returning the txcomments -- check if the function return will assign
}
// Only standard addresses
btrx.addressDecode = function (address) {
var bytes = B58.decode(address);
var front = bytes.slice(0, bytes.length - 4);
var back = bytes.slice(bytes.length - 4);
var checksum = Crypto.SHA256(Crypto.SHA256(front, {
asBytes: true
}), {
asBytes: true
}).slice(0, 4);
if (checksum + "" == back + "") {
return front.slice(1);
}
}
/* generate the transaction hash to sign from a transaction input */
btrx.transactionHash = function (index, sigHashType) {
var clone = bitjs.clone(this);
var shType = sigHashType || 1;
/* black out all other ins, except this one */
for (var i = 0; i < clone.inputs.length; i++) {
if (index != i) {
clone.inputs[i].script = [];
}
}
if ((clone.inputs) && clone.inputs[index]) {
/* SIGHASH : For more info on sig hashs see https://en.bitcoin.it/wiki/OP_CHECKSIG
and https://bitcoin.org/en/developer-guide#signature-hash-type */
if (shType == 1) {
//SIGHASH_ALL 0x01
} else if (shType == 2) {
//SIGHASH_NONE 0x02
clone.outputs = [];
for (var i = 0; i < clone.inputs.length; i++) {
if (index != i) {
clone.inputs[i].sequence = 0;
}
}
} else if (shType == 3) {
//SIGHASH_SINGLE 0x03
clone.outputs.length = index + 1;
for (var i = 0; i < index; i++) {
clone.outputs[i].value = -1;
clone.outputs[i].script = [];
}
for (var i = 0; i < clone.inputs.length; i++) {
if (index != i) {
clone.inputs[i].sequence = 0;
}
}
} else if (shType >= 128) {
//SIGHASH_ANYONECANPAY 0x80
clone.inputs = [clone.inputs[index]];
if (shType == 129) {
// SIGHASH_ALL + SIGHASH_ANYONECANPAY
} else if (shType == 130) {
// SIGHASH_NONE + SIGHASH_ANYONECANPAY
clone.outputs = [];
} else if (shType == 131) {
// SIGHASH_SINGLE + SIGHASH_ANYONECANPAY
clone.outputs.length = index + 1;
for (var i = 0; i < index; i++) {
clone.outputs[i].value = -1;
clone.outputs[i].script = [];
}
}
}
var buffer = Crypto.util.hexToBytes(clone.serialize());
buffer = buffer.concat(bitjs.numToBytes(parseInt(shType), 4));
var hash = Crypto.SHA256(buffer, {
asBytes: true
});
var r = Crypto.util.bytesToHex(Crypto.SHA256(hash, {
asBytes: true
}));
return r;
} else {
return false;
}
}
/* generate a signature from a transaction hash */
btrx.transactionSig = function (index, wif, sigHashType, txhash) {
function serializeSig(r, s) {
var rBa = r.toByteArraySigned();
var sBa = s.toByteArraySigned();
var sequence = [];
sequence.push(0x02); // INTEGER
sequence.push(rBa.length);
sequence = sequence.concat(rBa);
sequence.push(0x02); // INTEGER
sequence.push(sBa.length);
sequence = sequence.concat(sBa);
sequence.unshift(sequence.length);
sequence.unshift(0x30); // SEQUENCE
return sequence;
}
var shType = sigHashType || 1;
var hash = txhash || Crypto.util.hexToBytes(this.transactionHash(index, shType));
if (hash) {
var curve = EllipticCurve.getSECCurveByName("secp256k1");
var key = bitjs.wif2privkey(wif);
var priv = BigInteger.fromByteArrayUnsigned(Crypto.util.hexToBytes(key['privkey']));
var n = curve.getN();
var e = BigInteger.fromByteArrayUnsigned(hash);
var badrs = 0
do {
var k = this.deterministicK(wif, hash, badrs);
var G = curve.getG();
var Q = G.multiply(k);
var r = Q.getX().toBigInteger().mod(n);
var s = k.modInverse(n).multiply(e.add(priv.multiply(r))).mod(n);
badrs++
} while (r.compareTo(BigInteger.ZERO) <= 0 || s.compareTo(BigInteger.ZERO) <= 0);
// Force lower s values per BIP62
var halfn = n.shiftRight(1);
if (s.compareTo(halfn) > 0) {
s = n.subtract(s);
};
var sig = serializeSig(r, s);
sig.push(parseInt(shType, 10));
return Crypto.util.bytesToHex(sig);
} else {
return false;
}
}
// https://tools.ietf.org/html/rfc6979#section-3.2
btrx.deterministicK = function (wif, hash, badrs) {
// if r or s were invalid when this function was used in signing,
// we do not want to actually compute r, s here for efficiency, so,
// we can increment badrs. explained at end of RFC 6979 section 3.2
// wif is b58check encoded wif privkey.
// hash is byte array of transaction digest.
// badrs is used only if the k resulted in bad r or s.
// some necessary things out of the way for clarity.
badrs = badrs || 0;
var key = bitjs.wif2privkey(wif);
var x = Crypto.util.hexToBytes(key['privkey'])
var curve = EllipticCurve.getSECCurveByName("secp256k1");
var N = curve.getN();
// Step: a
// hash is a byteArray of the message digest. so h1 == hash in our case
// Step: b
var v = [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1
];
// Step: c
var k = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0
];
// Step: d
k = Crypto.HMAC(Crypto.SHA256, v.concat([0]).concat(x).concat(hash), k, {
asBytes: true
});
// Step: e
v = Crypto.HMAC(Crypto.SHA256, v, k, {
asBytes: true
});
// Step: f
k = Crypto.HMAC(Crypto.SHA256, v.concat([1]).concat(x).concat(hash), k, {
asBytes: true
});
// Step: g
v = Crypto.HMAC(Crypto.SHA256, v, k, {
asBytes: true
});
// Step: h1
var T = [];
// Step: h2 (since we know tlen = qlen, just copy v to T.)
v = Crypto.HMAC(Crypto.SHA256, v, k, {
asBytes: true
});
T = v;
// Step: h3
var KBigInt = BigInteger.fromByteArrayUnsigned(T);
// loop if KBigInt is not in the range of [1, N-1] or if badrs needs incrementing.
var i = 0
while (KBigInt.compareTo(N) >= 0 || KBigInt.compareTo(BigInteger.ZERO) <= 0 || i <
badrs) {
k = Crypto.HMAC(Crypto.SHA256, v.concat([0]), k, {
asBytes: true
});
v = Crypto.HMAC(Crypto.SHA256, v, k, {
asBytes: true
});
v = Crypto.HMAC(Crypto.SHA256, v, k, {
asBytes: true
});
T = v;
KBigInt = BigInteger.fromByteArrayUnsigned(T);
i++
};
return KBigInt;
};
/* sign a "standard" input */
btrx.signinput = function (index, wif, sigHashType) {
var key = bitjs.wif2pubkey(wif);
var shType = sigHashType || 1;
var signature = this.transactionSig(index, wif, shType);
var buf = [];
var sigBytes = Crypto.util.hexToBytes(signature);
buf.push(sigBytes.length);
buf = buf.concat(sigBytes);
var pubKeyBytes = Crypto.util.hexToBytes(key['pubkey']);
buf.push(pubKeyBytes.length);
buf = buf.concat(pubKeyBytes);
this.inputs[index].script = buf;
return true;
}
/* sign inputs */
btrx.sign = function (wif, sigHashType) {
var shType = sigHashType || 1;
for (var i = 0; i < this.inputs.length; i++) {
this.signinput(i, wif, shType);
}
return this.serialize();
}
/* serialize a transaction */
btrx.serialize = function () {
var buffer = [];
buffer = buffer.concat(bitjs.numToBytes(parseInt(this.version), 4));
buffer = buffer.concat(bitjs.numToVarInt(this.inputs.length));
for (var i = 0; i < this.inputs.length; i++) {
var txin = this.inputs[i];
buffer = buffer.concat(Crypto.util.hexToBytes(txin.outpoint.hash).reverse());
buffer = buffer.concat(bitjs.numToBytes(parseInt(txin.outpoint.index), 4));
var scriptBytes = txin.script;
buffer = buffer.concat(bitjs.numToVarInt(scriptBytes.length));
buffer = buffer.concat(scriptBytes);
buffer = buffer.concat(bitjs.numToBytes(parseInt(txin.sequence), 4));
}
buffer = buffer.concat(bitjs.numToVarInt(this.outputs.length));
for (var i = 0; i < this.outputs.length; i++) {
var txout = this.outputs[i];
buffer = buffer.concat(bitjs.numToBytes(txout.value, 8));
var scriptBytes = txout.script;
buffer = buffer.concat(bitjs.numToVarInt(scriptBytes.length));
buffer = buffer.concat(scriptBytes);
}
buffer = buffer.concat(bitjs.numToBytes(parseInt(this.locktime),4));
flohex = ascii_to_hexa(this.floData);
floDataCount = this.floData.length;
//flochange -- creating unique data character count logic for floData. This string is prefixed before actual floData string in Raw Transaction
if (floDataCount <= 16) {
floDataCountString = floDataCount.toString(16);
floDataCountString = "0"+ floDataCountString;
} else if (floDataCount < 253) {
floDataCountString = floDataCount.toString(16);
} else if (floDataCount <= 1023) {
floDataCountAdjusted = (floDataCount - 253) + parseInt("0xfd00fd");
floDataCountStringAdjusted = floDataCountAdjusted.toString(16);
floDataCountString = floDataCountStringAdjusted.substr(0,2)+ floDataCountStringAdjusted.substr(4,2)+ floDataCountStringAdjusted.substr(2,2);
} else {
floDataCountString = "Character Limit Exceeded";
}
return Crypto.util.bytesToHex(buffer)+floDataCountString+flohex; // flochange -- Addition of floDataCountString and floData in serialization
}
return btrx;
}
bitjs.numToBytes = function (num, bytes) {
if (typeof bytes === "undefined") bytes = 8;
if (bytes == 0) {
return [];
} else if (num == -1) {
return Crypto.util.hexToBytes("ffffffffffffffff");
} else {
return [num % 256].concat(bitjs.numToBytes(Math.floor(num / 256), bytes - 1));
}
}
bitjs.numToByteArray = function (num) {
if (num <= 256) {
return [num];
} else {
return [num % 256].concat(bitjs.numToByteArray(Math.floor(num / 256)));
}
}
bitjs.numToVarInt = function (num) {
if (num < 253) {
return [num];
} else if (num < 65536) {
return [253].concat(bitjs.numToBytes(num, 2));
} else if (num < 4294967296) {
return [254].concat(bitjs.numToBytes(num, 4));
} else {
return [255].concat(bitjs.numToBytes(num, 8));
}
}
bitjs.bytesToNum = function (bytes) {
if (bytes.length == 0) return 0;
else return bytes[0] + 256 * bitjs.bytesToNum(bytes.slice(1));
}
/* clone an object */
bitjs.clone = function (obj) {
if (obj == null || typeof (obj) != 'object') return obj;
var temp = new obj.constructor();
for (var key in obj) {
if (obj.hasOwnProperty(key)) {
temp[key] = bitjs.clone(obj[key]);
}
}
return temp;
}
var B58 = bitjs.Base58 = {
alphabet: "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz",
validRegex: /^[1-9A-HJ-NP-Za-km-z]+$/,
base: BigInteger.valueOf(58),
/**
* Convert a byte array to a base58-encoded string.
*
* Written by Mike Hearn for BitcoinJ.
* Copyright (c) 2011 Google Inc.
*
* Ported to JavaScript by Stefan Thomas.
*/
encode: function (input) {
var bi = BigInteger.fromByteArrayUnsigned(input);
var chars = [];
while (bi.compareTo(B58.base) >= 0) {
var mod = bi.mod(B58.base);
chars.unshift(B58.alphabet[mod.intValue()]);
bi = bi.subtract(mod).divide(B58.base);
}
chars.unshift(B58.alphabet[bi.intValue()]);
// Convert leading zeros too.
for (var i = 0; i < input.length; i++) {
if (input[i] == 0x00) {
chars.unshift(B58.alphabet[0]);
} else break;
}
return chars.join('');
},
/**
* Convert a base58-encoded string to a byte array.
*
* Written by Mike Hearn for BitcoinJ.
* Copyright (c) 2011 Google Inc.
*
* Ported to JavaScript by Stefan Thomas.
*/
decode: function (input) {
var bi = BigInteger.valueOf(0);
var leadingZerosNum = 0;
for (var i = input.length - 1; i >= 0; i--) {
var alphaIndex = B58.alphabet.indexOf(input[i]);
if (alphaIndex < 0) {
throw "Invalid character";
}
bi = bi.add(BigInteger.valueOf(alphaIndex)
.multiply(B58.base.pow(input.length - 1 - i)));
// This counts leading zero bytes
if (input[i] == "1") leadingZerosNum++;
else leadingZerosNum = 0;
}
var bytes = bi.toByteArrayUnsigned();
// Add leading zeros
while (leadingZerosNum-- > 0) bytes.unshift(0);
return bytes;
}
}
return bitjs;
})();
/*
Copyright (c) 2011 Stefan Thomas
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
//https://raw.github.com/bitcoinjs/bitcoinjs-lib/1a7fc9d063f864058809d06ef4542af40be3558f/src/bitcoin.js
(function (exports) {
var Bitcoin = exports;
})(
'object' === typeof module ? module.exports : (window.Bitcoin = {})
);
//https://raw.github.com/bitcoinjs/bitcoinjs-lib/c952aaeb3ee472e3776655b8ea07299ebed702c7/src/base58.js
(function (Bitcoin) {
Bitcoin.Base58 = {
alphabet: "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz",
validRegex: /^[1-9A-HJ-NP-Za-km-z]+$/,
base: BigInteger.valueOf(58),
/**
* Convert a byte array to a base58-encoded string.
*
* Written by Mike Hearn for BitcoinJ.
* Copyright (c) 2011 Google Inc.
*
* Ported to JavaScript by Stefan Thomas.
*/
encode: function (input) {
var bi = BigInteger.fromByteArrayUnsigned(input);
var chars = [];
while (bi.compareTo(B58.base) >= 0) {
var mod = bi.mod(B58.base);
chars.unshift(B58.alphabet[mod.intValue()]);
bi = bi.subtract(mod).divide(B58.base);
}
chars.unshift(B58.alphabet[bi.intValue()]);
// Convert leading zeros too.
for (var i = 0; i < input.length; i++) {
if (input[i] == 0x00) {
chars.unshift(B58.alphabet[0]);
} else break;
}
return chars.join('');
},
/**
* Convert a base58-encoded string to a byte array.
*
* Written by Mike Hearn for BitcoinJ.
* Copyright (c) 2011 Google Inc.
*
* Ported to JavaScript by Stefan Thomas.
*/
decode: function (input) {
var bi = BigInteger.valueOf(0);
var leadingZerosNum = 0;
for (var i = input.length - 1; i >= 0; i--) {
var alphaIndex = B58.alphabet.indexOf(input[i]);
if (alphaIndex < 0) {
throw "Invalid character";
}
bi = bi.add(BigInteger.valueOf(alphaIndex)
.multiply(B58.base.pow(input.length - 1 - i)));
// This counts leading zero bytes
if (input[i] == "1") leadingZerosNum++;
else leadingZerosNum = 0;
}
var bytes = bi.toByteArrayUnsigned();
// Add leading zeros
while (leadingZerosNum-- > 0) bytes.unshift(0);
return bytes;
}
};
var B58 = Bitcoin.Base58;
})(
'undefined' != typeof Bitcoin ? Bitcoin : module.exports
);
//https://raw.github.com/bitcoinjs/bitcoinjs-lib/09e8c6e184d6501a0c2c59d73ca64db5c0d3eb95/src/address.js
Bitcoin.Address = function (bytes) {
if(floGlobals.blockchain == "FLO")
this.version = 0x23; // FLO mainnet public address
else if(floGlobals.blockchain == "FLO_TEST")
this.version = 0x73; // FLO testnet public address
if ("string" == typeof bytes) {
bytes = Bitcoin.Address.decodeString(bytes,this.version);
}
this.hash = bytes;
};
Bitcoin.Address.networkVersion = 0x23; // (FLO mainnet 0x23, 35D), (Bitcoin Mainnet, 0x00, 0D) // *this has no effect *
/**
* Serialize this object as a standard Bitcoin address.
*
* Returns the address as a base58-encoded string in the standardized format.
*/
Bitcoin.Address.prototype.toString = function () {
// Get a copy of the hash
var hash = this.hash.slice(0);
// Version
hash.unshift(this.version);
var checksum = Crypto.SHA256(Crypto.SHA256(hash, { asBytes: true }), { asBytes: true });
var bytes = hash.concat(checksum.slice(0, 4));
return Bitcoin.Base58.encode(bytes);
};
Bitcoin.Address.prototype.getHashBase64 = function () {
return Crypto.util.bytesToBase64(this.hash);
};
/**
* Parse a Bitcoin address contained in a string.
*/
Bitcoin.Address.decodeString = function (string,version) {
var bytes = Bitcoin.Base58.decode(string);
var hash = bytes.slice(0, 21);
var checksum = Crypto.SHA256(Crypto.SHA256(hash, { asBytes: true }), { asBytes: true });
if (checksum[0] != bytes[21] ||
checksum[1] != bytes[22] ||
checksum[2] != bytes[23] ||
checksum[3] != bytes[24]) {
throw "Checksum validation failed!";
}
if (version != hash.shift()) {
throw "Version " + hash.shift() + " not supported!";
}
return hash;
};
//https://raw.github.com/bitcoinjs/bitcoinjs-lib/e90780d3d3b8fc0d027d2bcb38b80479902f223e/src/ecdsa.js
Bitcoin.ECDSA = (function () {
var ecparams = EllipticCurve.getSECCurveByName("secp256k1");
var rng = new SecureRandom();
var P_OVER_FOUR = null;
function implShamirsTrick(P, k, Q, l) {
var m = Math.max(k.bitLength(), l.bitLength());
var Z = P.add2D(Q);
var R = P.curve.getInfinity();
for (var i = m - 1; i >= 0; --i) {
R = R.twice2D();
R.z = BigInteger.ONE;
if (k.testBit(i)) {
if (l.testBit(i)) {
R = R.add2D(Z);
} else {
R = R.add2D(P);
}
} else {
if (l.testBit(i)) {
R = R.add2D(Q);
}
}
}
return R;
};
var ECDSA = {
getBigRandom: function (limit) {
return new BigInteger(limit.bitLength(), rng)
.mod(limit.subtract(BigInteger.ONE))
.add(BigInteger.ONE);
},
sign: function (hash, priv) {
var d = priv;
var n = ecparams.getN();
var e = BigInteger.fromByteArrayUnsigned(hash);
do {
var k = ECDSA.getBigRandom(n);
var G = ecparams.getG();
var Q = G.multiply(k);
var r = Q.getX().toBigInteger().mod(n);
} while (r.compareTo(BigInteger.ZERO) <= 0);
var s = k.modInverse(n).multiply(e.add(d.multiply(r))).mod(n);
return ECDSA.serializeSig(r, s);
},
verify: function (hash, sig, pubkey) {
var r, s;
if (Bitcoin.Util.isArray(sig)) {
var obj = ECDSA.parseSig(sig);
r = obj.r;
s = obj.s;
} else if ("object" === typeof sig && sig.r && sig.s) {
r = sig.r;
s = sig.s;
} else {
throw "Invalid value for signature";
}
var Q;
if (pubkey instanceof ec.PointFp) {
Q = pubkey;
} else if (Bitcoin.Util.isArray(pubkey)) {
Q = EllipticCurve.PointFp.decodeFrom(ecparams.getCurve(), pubkey);
} else {
throw "Invalid format for pubkey value, must be byte array or ec.PointFp";
}
var e = BigInteger.fromByteArrayUnsigned(hash);
return ECDSA.verifyRaw(e, r, s, Q);
},
verifyRaw: function (e, r, s, Q) {
var n = ecparams.getN();
var G = ecparams.getG();
if (r.compareTo(BigInteger.ONE) < 0 ||
r.compareTo(n) >= 0)
return false;
if (s.compareTo(BigInteger.ONE) < 0 ||
s.compareTo(n) >= 0)
return false;
var c = s.modInverse(n);
var u1 = e.multiply(c).mod(n);
var u2 = r.multiply(c).mod(n);
// TODO(!!!): For some reason Shamir's trick isn't working with
// signed message verification!? Probably an implementation
// error!
//var point = implShamirsTrick(G, u1, Q, u2);
var point = G.multiply(u1).add(Q.multiply(u2));
var v = point.getX().toBigInteger().mod(n);
return v.equals(r);
},
/**
* Serialize a signature into DER format.
*
* Takes two BigIntegers representing r and s and returns a byte array.
*/
serializeSig: function (r, s) {
var rBa = r.toByteArraySigned();
var sBa = s.toByteArraySigned();
var sequence = [];
sequence.push(0x02); // INTEGER
sequence.push(rBa.length);
sequence = sequence.concat(rBa);
sequence.push(0x02); // INTEGER
sequence.push(sBa.length);
sequence = sequence.concat(sBa);
sequence.unshift(sequence.length);
sequence.unshift(0x30); // SEQUENCE
return sequence;
},
/**
* Parses a byte array containing a DER-encoded signature.
*
* This function will return an object of the form:
*
* {
* r: BigInteger,
* s: BigInteger
* }
*/
parseSig: function (sig) {
var cursor;
if (sig[0] != 0x30)
throw new Error("Signature not a valid DERSequence");
cursor = 2;
if (sig[cursor] != 0x02)
throw new Error("First element in signature must be a DERInteger");;
var rBa = sig.slice(cursor + 2, cursor + 2 + sig[cursor + 1]);
cursor += 2 + sig[cursor + 1];
if (sig[cursor] != 0x02)
throw new Error("Second element in signature must be a DERInteger");
var sBa = sig.slice(cursor + 2, cursor + 2 + sig[cursor + 1]);
cursor += 2 + sig[cursor + 1];
//if (cursor != sig.length)
// throw new Error("Extra bytes in signature");
var r = BigInteger.fromByteArrayUnsigned(rBa);
var s = BigInteger.fromByteArrayUnsigned(sBa);
return {
r: r,
s: s
};
},
parseSigCompact: function (sig) {
if (sig.length !== 65) {
throw "Signature has the wrong length";
}
// Signature is prefixed with a type byte storing three bits of
// information.
var i = sig[0] - 27;
if (i < 0 || i > 7) {
throw "Invalid signature type";
}
var n = ecparams.getN();
var r = BigInteger.fromByteArrayUnsigned(sig.slice(1, 33)).mod(n);
var s = BigInteger.fromByteArrayUnsigned(sig.slice(33, 65)).mod(n);
return {
r: r,
s: s,
i: i
};
},
/**
* Recover a public key from a signature.
*
* See SEC 1: Elliptic Curve Cryptography, section 4.1.6, "Public
* Key Recovery Operation".
*
* http://www.secg.org/download/aid-780/sec1-v2.pdf
*/
recoverPubKey: function (r, s, hash, i) {
// The recovery parameter i has two bits.
i = i & 3;
// The less significant bit specifies whether the y coordinate
// of the compressed point is even or not.
var isYEven = i & 1;
// The more significant bit specifies whether we should use the
// first or second candidate key.
var isSecondKey = i >> 1;
var n = ecparams.getN();
var G = ecparams.getG();
var curve = ecparams.getCurve();
var p = curve.getQ();
var a = curve.getA().toBigInteger();
var b = curve.getB().toBigInteger();
// We precalculate (p + 1) / 4 where p is if the field order
if (!P_OVER_FOUR) {
P_OVER_FOUR = p.add(BigInteger.ONE).divide(BigInteger.valueOf(4));
}
// 1.1 Compute x
var x = isSecondKey ? r.add(n) : r;
// 1.3 Convert x to point
var alpha = x.multiply(x).multiply(x).add(a.multiply(x)).add(b).mod(p);
var beta = alpha.modPow(P_OVER_FOUR, p);
var xorOdd = beta.isEven() ? (i % 2) : ((i + 1) % 2);
// If beta is even, but y isn't or vice versa, then convert it,
// otherwise we're done and y == beta.
var y = (beta.isEven() ? !isYEven : isYEven) ? beta : p.subtract(beta);
// 1.4 Check that nR is at infinity
var R = new EllipticCurve.PointFp(curve,
curve.fromBigInteger(x),
curve.fromBigInteger(y));
R.validate();
// 1.5 Compute e from M
var e = BigInteger.fromByteArrayUnsigned(hash);
var eNeg = BigInteger.ZERO.subtract(e).mod(n);
// 1.6 Compute Q = r^-1 (sR - eG)
var rInv = r.modInverse(n);
var Q = implShamirsTrick(R, s, G, eNeg).multiply(rInv);
Q.validate();
if (!ECDSA.verifyRaw(e, r, s, Q)) {
throw "Pubkey recovery unsuccessful";
}
var pubKey = new Bitcoin.ECKey();
pubKey.pub = Q;
return pubKey;
},
/**
* Calculate pubkey extraction parameter.
*
* When extracting a pubkey from a signature, we have to
* distinguish four different cases. Rather than putting this
* burden on the verifier, Bitcoin includes a 2-bit value with the
* signature.
*
* This function simply tries all four cases and returns the value
* that resulted in a successful pubkey recovery.
*/
calcPubkeyRecoveryParam: function (address, r, s, hash) {
for (var i = 0; i < 4; i++) {
try {
var pubkey = Bitcoin.ECDSA.recoverPubKey(r, s, hash, i);
if (pubkey.getBitcoinAddress().toString() == address) {
return i;
}
} catch (e) {}
}
throw "Unable to find valid recovery factor";
}
};
return ECDSA;
})();
Bitcoin.KeyPool = (function () {
var KeyPool = function () {
this.keyArray = [];
this.push = function (item) {
if (item == null || item.priv == null) return;
var doAdd = true;
// prevent duplicates from being added to the array
for (var index in this.keyArray) {
var currentItem = this.keyArray[index];
if (currentItem != null && currentItem.priv != null && item.getBitcoinAddress() == currentItem.getBitcoinAddress()) {
doAdd = false;
break;
}
}
if (doAdd) this.keyArray.push(item);
};
this.reset = function () {
this.keyArray = [];
};
this.getArray = function () {
// copy array
return this.keyArray.slice(0);
};
this.setArray = function (ka) {
this.keyArray = ka;
};
this.length = function () {
return this.keyArray.length;
};
this.toString = function () {
var keyPoolString = "# = " + this.length() + "\n";
var pool = this.getArray();
for (var index in pool) {
var item = pool[index];
if (Bitcoin.Util.hasMethods(item, 'getBitcoinAddress', 'toString')) {
if (item != null) {
keyPoolString += "\"" + item.getBitcoinAddress() + "\"" + ", \"" + item.toString("wif") + "\"\n";
}
}
}
return keyPoolString;
};
return this;
};
return new KeyPool();
})();
Bitcoin.Bip38Key = (function () {
var Bip38 = function (address, encryptedKey) {
this.address = address;
this.priv = encryptedKey;
};
Bip38.prototype.getBitcoinAddress = function () {
return this.address;
};
Bip38.prototype.toString = function () {
return this.priv;
};
return Bip38;
})();
//https://raw.github.com/pointbiz/bitcoinjs-lib/9b2f94a028a7bc9bed94e0722563e9ff1d8e8db8/src/eckey.js
Bitcoin.ECKey = (function () {
var ECDSA = Bitcoin.ECDSA;
var KeyPool = Bitcoin.KeyPool;
var ecparams = EllipticCurve.getSECCurveByName("secp256k1");
var ECKey = function (input) {
if (!input) {
// Generate new key
var n = ecparams.getN();
this.priv = ECDSA.getBigRandom(n);
} else if (input instanceof BigInteger) {
// Input is a private key value
this.priv = input;
} else if (Bitcoin.Util.isArray(input)) {
// Prepend zero byte to prevent interpretation as negative integer
this.priv = BigInteger.fromByteArrayUnsigned(input);
} else if ("string" == typeof input) {
var bytes = null;
try{
// This part is edited for FLO. FLO WIF are always compressed WIF. FLO WIF (private key) starts with R for mainnet and c for testnet.
if(((floGlobals.blockchain == "FLO") && /^R[123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz]{51}$/.test(input)) ||
((floGlobals.blockchain == "FLO_TEST") && /^c[123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz]{51}$/.test(input))) {
bytes = ECKey.decodeCompressedWalletImportFormat(input);
this.compressed = true;
}else if (ECKey.isHexFormat(input)) {
bytes = Crypto.util.hexToBytes(input);
}
/*
if (ECKey.isWalletImportFormat(input)) {
bytes = ECKey.decodeWalletImportFormat(input);
} else if (ECKey.isCompressedWalletImportFormat(input)) {
bytes = ECKey.decodeCompressedWalletImportFormat(input);
this.compressed = true;
} else if (ECKey.isMiniFormat(input)) {
bytes = Crypto.SHA256(input, { asBytes: true });
} else if (ECKey.isHexFormat(input)) {
bytes = Crypto.util.hexToBytes(input);
} else if (ECKey.isBase64Format(input)) {
bytes = Crypto.util.base64ToBytes(input);
}
*/
} catch (exc1) {
this.setError(exc1);
}
if (ECKey.isBase6Format(input)) {
this.priv = new BigInteger(input, 6);
} else if (bytes == null || bytes.length != 32) {
this.priv = null;
} else {
// Prepend zero byte to prevent interpretation as negative integer
this.priv = BigInteger.fromByteArrayUnsigned(bytes);
}
}
this.compressed = (this.compressed == undefined) ? !!ECKey.compressByDefault : this.compressed;
try {
// check not zero
if (this.priv != null && BigInteger.ZERO.compareTo(this.priv) == 0) this.setError("Error: BigInteger equal to zero.");
// valid range [0x1, 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364140])
var hexKeyRangeLimit = "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364140";
var rangeLimitBytes = Crypto.util.hexToBytes(hexKeyRangeLimit);
var limitBigInt = BigInteger.fromByteArrayUnsigned(rangeLimitBytes);
if (this.priv != null && limitBigInt.compareTo(this.priv) < 0) this.setError("Error: BigInteger outside of curve range.")
if (this.priv != null) {
KeyPool.push(this);
}
} catch (exc2) {
this.setError(exc2);
}
};
if(floGlobals.blockchain == "FLO")
ECKey.privateKeyPrefix = 0xA3; //(Bitcoin mainnet 0x80 testnet 0xEF) (FLO mainnet 0xA3 163 D)
else if(floGlobals.blockchain == "FLO_TEST")
ECKey.privateKeyPrefix = 0xEF; //FLO testnet
/**
* Whether public keys should be returned compressed by default.
*/
ECKey.compressByDefault = false;
/**
* Set whether the public key should be returned compressed or not.
*/
ECKey.prototype.setError = function (err) {
this.error = err;
this.priv = null;
return this;
};
/**
* Set whether the public key should be returned compressed or not.
*/
ECKey.prototype.setCompressed = function (v) {
this.compressed = !!v;
if (this.pubPoint) this.pubPoint.compressed = this.compressed;
return this;
};
/*
* Return public key as a byte array in DER encoding
*/
ECKey.prototype.getPub = function () {
if (this.compressed) {
if (this.pubComp) return this.pubComp;
return this.pubComp = this.getPubPoint().getEncoded(1);
} else {
if (this.pubUncomp) return this.pubUncomp;
return this.pubUncomp = this.getPubPoint().getEncoded(0);
}
};
/**
* Return public point as ECPoint object.
*/
ECKey.prototype.getPubPoint = function () {
if (!this.pubPoint) {
this.pubPoint = ecparams.getG().multiply(this.priv);
this.pubPoint.compressed = this.compressed;
}
return this.pubPoint;
};
ECKey.prototype.getPubKeyHex = function () {
if (this.compressed) {
if (this.pubKeyHexComp) return this.pubKeyHexComp;
return this.pubKeyHexComp = Crypto.util.bytesToHex(this.getPub()).toString().toUpperCase();
} else {
if (this.pubKeyHexUncomp) return this.pubKeyHexUncomp;
return this.pubKeyHexUncomp = Crypto.util.bytesToHex(this.getPub()).toString().toUpperCase();
}
};
/**
* Get the pubKeyHash for this key.
*
* This is calculated as RIPE160(SHA256([encoded pubkey])) and returned as
* a byte array.
*/
ECKey.prototype.getPubKeyHash = function () {
if (this.compressed) {
if (this.pubKeyHashComp) return this.pubKeyHashComp;
return this.pubKeyHashComp = Bitcoin.Util.sha256ripe160(this.getPub());
} else {
if (this.pubKeyHashUncomp) return this.pubKeyHashUncomp;
return this.pubKeyHashUncomp = Bitcoin.Util.sha256ripe160(this.getPub());
}
};
ECKey.prototype.getBitcoinAddress = function () {
var hash = this.getPubKeyHash();
var addr = new Bitcoin.Address(hash);
return addr.toString();
};
/*
* Takes a public point as a hex string or byte array
*/
ECKey.prototype.setPub = function (pub) {
// byte array
if (Bitcoin.Util.isArray(pub)) {
pub = Crypto.util.bytesToHex(pub).toString().toUpperCase();
}
var ecPoint = ecparams.getCurve().decodePointHex(pub);
this.setCompressed(ecPoint.compressed);
this.pubPoint = ecPoint;
return this;
};
// Sipa Private Key Wallet Import Format
ECKey.prototype.getBitcoinWalletImportFormat = function () {
var bytes = this.getBitcoinPrivateKeyByteArray();
if (bytes == null) return "";
bytes.unshift(ECKey.privateKeyPrefix); // prepend 0x80 byte
if (this.compressed) bytes.push(0x01); // append 0x01 byte for compressed format
var checksum = Crypto.SHA256(Crypto.SHA256(bytes, { asBytes: true }), { asBytes: true });
bytes = bytes.concat(checksum.slice(0, 4));
var privWif = Bitcoin.Base58.encode(bytes);
return privWif;
};
// Private Key Hex Format
ECKey.prototype.getBitcoinHexFormat = function () {
return Crypto.util.bytesToHex(this.getBitcoinPrivateKeyByteArray()).toString().toUpperCase();
};
// Private Key Base64 Format
ECKey.prototype.getBitcoinBase64Format = function () {
return Crypto.util.bytesToBase64(this.getBitcoinPrivateKeyByteArray());
};
ECKey.prototype.getBitcoinPrivateKeyByteArray = function () {
if (this.priv == null) return null;
// Get a copy of private key as a byte array
var bytes = this.priv.toByteArrayUnsigned();
// zero pad if private key is less than 32 bytes
while (bytes.length < 32) bytes.unshift(0x00);
return bytes;
};
ECKey.prototype.toString = function (format) {
format = format || "";
if (format.toString().toLowerCase() == "base64" || format.toString().toLowerCase() == "b64") {
return this.getBitcoinBase64Format();
}
// Wallet Import Format
else if (format.toString().toLowerCase() == "wif") {
return this.getBitcoinWalletImportFormat();
}
else {
return this.getBitcoinHexFormat();
}
};
ECKey.prototype.sign = function (hash) {
return ECDSA.sign(hash, this.priv);
};
ECKey.prototype.verify = function (hash, sig) {
return ECDSA.verify(hash, sig, this.getPub());
};
/**
* Parse a wallet import format private key contained in a string.
*/
ECKey.decodeWalletImportFormat = function (privStr) {
var bytes = Bitcoin.Base58.decode(privStr);
var hash = bytes.slice(0, 33);
var checksum = Crypto.SHA256(Crypto.SHA256(hash, { asBytes: true }), { asBytes: true });
if (checksum[0] != bytes[33] ||
checksum[1] != bytes[34] ||
checksum[2] != bytes[35] ||
checksum[3] != bytes[36]) {
throw "Checksum validation failed!";
}
var version = hash.shift();
if (version != ECKey.privateKeyPrefix) {
throw "Version " + version + " not supported!";
}
return hash;
};
/**
* Parse a compressed wallet import format private key contained in a string.
*/
ECKey.decodeCompressedWalletImportFormat = function (privStr) {
var bytes = Bitcoin.Base58.decode(privStr);
var hash = bytes.slice(0, 34);
var checksum = Crypto.SHA256(Crypto.SHA256(hash, { asBytes: true }), { asBytes: true });
if (checksum[0] != bytes[34] ||
checksum[1] != bytes[35] ||
checksum[2] != bytes[36] ||
checksum[3] != bytes[37]) {
throw "Checksum validation failed!";
}
var version = hash.shift();
if (version != ECKey.privateKeyPrefix) {
throw "Version " + version + " not supported!";
}
hash.pop();
return hash;
};
// 64 characters [0-9A-F]
ECKey.isHexFormat = function (key) {
key = key.toString();
return /^[A-Fa-f0-9]{64}$/.test(key);
};
// 51 characters base58, always starts with a '5'
ECKey.isWalletImportFormat = function (key) {
key = key.toString();
return (ECKey.privateKeyPrefix == 0x80) ?
(/^5[123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz]{50}$/.test(key)) :
(/^R[123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz]{50}$/.test(key));
};
// 52 characters base58
ECKey.isCompressedWalletImportFormat = function (key) {
key = key.toString();
return (ECKey.privateKeyPrefix == 0x80) ?
(/^[LK][123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz]{51}$/.test(key)) :
(/^R[123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz]{51}$/.test(key));
};
// 44 characters
ECKey.isBase64Format = function (key) {
key = key.toString();
return (/^[ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789=+\/]{44}$/.test(key));
};
// 99 characters, 1=1, if using dice convert 6 to 0
ECKey.isBase6Format = function (key) {
key = key.toString();
return (/^[012345]{99}$/.test(key));
};
// 22, 26 or 30 characters, always starts with an 'S'
ECKey.isMiniFormat = function (key) {
key = key.toString();
var validChars22 = /^S[123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz]{21}$/.test(key);
var validChars26 = /^S[123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz]{25}$/.test(key);
var validChars30 = /^S[123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz]{29}$/.test(key);
var testBytes = Crypto.SHA256(key + "?", { asBytes: true });
return ((testBytes[0] === 0x00 || testBytes[0] === 0x01) && (validChars22 || validChars26 || validChars30));
};
return ECKey;
})();
//https://raw.github.com/bitcoinjs/bitcoinjs-lib/09e8c6e184d6501a0c2c59d73ca64db5c0d3eb95/src/util.js
// Bitcoin utility functions
Bitcoin.Util = {
/**
* Cross-browser compatibility version of Array.isArray.
*/
isArray: Array.isArray || function (o) {
return Object.prototype.toString.call(o) === '[object Array]';
},
/**
* Create an array of a certain length filled with a specific value.
*/
makeFilledArray: function (len, val) {
var array = [];
var i = 0;
while (i < len) {
array[i++] = val;
}
return array;
},
/**
* Turn an integer into a "var_int".
*
* "var_int" is a variable length integer used by Bitcoin's binary format.
*
* Returns a byte array.
*/
numToVarInt: function (i) {
if (i < 0xfd) {
// unsigned char
return [i];
} else if (i <= 1 << 16) {
// unsigned short (LE)
return [0xfd, i >>> 8, i & 255];
} else if (i <= 1 << 32) {
// unsigned int (LE)
return [0xfe].concat(Crypto.util.wordsToBytes([i]));
} else {
// unsigned long long (LE)
return [0xff].concat(Crypto.util.wordsToBytes([i >>> 32, i]));
}
},
/**
* Parse a Bitcoin value byte array, returning a BigInteger.
*/
valueToBigInt: function (valueBuffer) {
if (valueBuffer instanceof BigInteger) return valueBuffer;
// Prepend zero byte to prevent interpretation as negative integer
return BigInteger.fromByteArrayUnsigned(valueBuffer);
},
/**
* Format a Bitcoin value as a string.
*
* Takes a BigInteger or byte-array and returns that amount of Bitcoins in a
* nice standard formatting.
*
* Examples:
* 12.3555
* 0.1234
* 900.99998888
* 34.00
*/
formatValue: function (valueBuffer) {
var value = this.valueToBigInt(valueBuffer).toString();
var integerPart = value.length > 8 ? value.substr(0, value.length - 8) : '0';
var decimalPart = value.length > 8 ? value.substr(value.length - 8) : value;
while (decimalPart.length < 8) decimalPart = "0" + decimalPart;
decimalPart = decimalPart.replace(/0*$/, '');
while (decimalPart.length < 2) decimalPart += "0";
return integerPart + "." + decimalPart;
},
/**
* Parse a floating point string as a Bitcoin value.
*
* Keep in mind that parsing user input is messy. You should always display
* the parsed value back to the user to make sure we understood his input
* correctly.
*/
parseValue: function (valueString) {
// TODO: Detect other number formats (e.g. comma as decimal separator)
var valueComp = valueString.split('.');
var integralPart = valueComp[0];
var fractionalPart = valueComp[1] || "0";
while (fractionalPart.length < 8) fractionalPart += "0";
fractionalPart = fractionalPart.replace(/^0+/g, '');
var value = BigInteger.valueOf(parseInt(integralPart));
value = value.multiply(BigInteger.valueOf(100000000));
value = value.add(BigInteger.valueOf(parseInt(fractionalPart)));
return value;
},
/**
* Calculate RIPEMD160(SHA256(data)).
*
* Takes an arbitrary byte array as inputs and returns the hash as a byte
* array.
*/
sha256ripe160: function (data) {
return ripemd160(Crypto.SHA256(data, { asBytes: true }), { asBytes: true });
},
// double sha256
dsha256: function (data) {
return Crypto.SHA256(Crypto.SHA256(data, { asBytes: true }), { asBytes: true });
},
// duck typing method
hasMethods: function(obj /*, method list as strings */){
var i = 1, methodName;
while((methodName = arguments[i++])){
if(typeof obj[methodName] != 'function') {
return false;
}
}
return true;
}
};
</script>
<script>
/* Reactor Event handling */
if (typeof reactor == "undefined" || !reactor) {
(function () {
function Event(name) {
this.name = name;
this.callbacks = [];
}
Event.prototype.registerCallback = function (callback) {
this.callbacks.push(callback);
};
function Reactor() {
this.events = {};
}
Reactor.prototype.registerEvent = function (eventName) {
var event = new Event(eventName);
this.events[eventName] = event;
};
Reactor.prototype.dispatchEvent = function (eventName, eventArgs) {
this.events[eventName].callbacks.forEach(function (callback) {
callback(eventArgs);
});
};
Reactor.prototype.addEventListener = function (eventName, callback) {
this.events[eventName].registerCallback(callback);
};
window.reactor = new Reactor();
})();
}
/* Sample Usage
--Creating and defining the event--
reactor.registerEvent('<eventName>');
reactor.addEventListener('<eventName>', function(someObject){
do something...
});
--Firing the event--
reactor.dispatchEvent('<eventName>',<someObject>);
*/
</script>
<script>
/* FLO Crypto Operators*/
const floCrypto = {
p: BigInteger("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFC2F", 16),
ecparams: EllipticCurve.getSECCurveByName("secp256k1"),
exponent1: function () {
return this.p.add(BigInteger.ONE).divide(BigInteger("4"))
},
calculateY: function (x) {
let p = this.p;
let exp = this.exponent1();
// x is x value of public key in BigInteger format without 02 or 03 or 04 prefix
return x.modPow(BigInteger("3"), p).add(BigInteger("7")).mod(p).modPow(exp, p)
},
getUncompressedPublicKey: function (compressedPublicKey) {
const p = this.p;
// Fetch x from compressedPublicKey
let pubKeyBytes = Crypto.util.hexToBytes(compressedPublicKey);
const prefix = pubKeyBytes.shift() // remove prefix
let prefix_modulus = prefix % 2;
pubKeyBytes.unshift(0) // add prefix 0
let x = new BigInteger(pubKeyBytes)
let xDecimalValue = x.toString()
// Fetch y
let y = this.calculateY(x);
let yDecimalValue = y.toString();
// verify y value
let resultBigInt = y.mod(BigInteger("2"));
let check = resultBigInt.toString() % 2;
if (prefix_modulus !== check) {
yDecimalValue = y.negate().mod(p).toString();
}
return {
x: xDecimalValue,
y: yDecimalValue
};
},
getSenderPublicKeyString: function () {
privateKey = ellipticCurveEncryption.senderRandom();
senderPublicKeyString = ellipticCurveEncryption.senderPublicString(privateKey);
return {
privateKey: privateKey,
senderPublicKeyString: senderPublicKeyString
}
},
deriveSharedKeySender: function (receiverCompressedPublicKey, senderPrivateKey) {
try {
let receiverPublicKeyString = this.getUncompressedPublicKey(receiverCompressedPublicKey);
var senderDerivedKey = ellipticCurveEncryption.senderSharedKeyDerivation(
receiverPublicKeyString.x, receiverPublicKeyString.y, senderPrivateKey);
return senderDerivedKey;
} catch (error) {
return new Error(error);
}
},
deriveReceiverSharedKey: function (senderPublicKeyString, receiverPrivateKey) {
return ellipticCurveEncryption.receiverSharedKeyDerivation(
senderPublicKeyString.XValuePublicString, senderPublicKeyString.YValuePublicString,
receiverPrivateKey);
},
getReceiverPublicKeyString: function (privateKey) {
return ellipticCurveEncryption.receiverPublicString(privateKey);
},
deriveSharedKeyReceiver: function (senderPublicKeyString, receiverPrivateKey) {
try {
return ellipticCurveEncryption.receiverSharedKeyDerivation(senderPublicKeyString.XValuePublicString,
senderPublicKeyString.YValuePublicString, receiverPrivateKey);
} catch (error) {
return new Error(error);
}
},
wifToDecimal: function (pk_wif, isPubKeyCompressed = false) {
let pk = Bitcoin.Base58.decode(pk_wif)
pk.shift()
pk.splice(-4, 4)
//If the private key corresponded to a compressed public key, also drop the last byte (it should be 0x01).
if (isPubKeyCompressed == true) pk.pop()
pk.unshift(0)
privateKeyDecimal = BigInteger(pk).toString()
privateKeyHex = Crypto.util.bytesToHex(pk)
return {
privateKeyDecimal: privateKeyDecimal,
privateKeyHex: privateKeyHex
}
},
//Encrypt Data using public-key
encryptData: function (data, receiverCompressedPublicKey) {
var senderECKeyData = this.getSenderPublicKeyString();
var senderDerivedKey = this.deriveSharedKeySender(receiverCompressedPublicKey, senderECKeyData.privateKey);
let senderKey = senderDerivedKey.XValue + senderDerivedKey.YValue;
let secret = Crypto.AES.encrypt(data, senderKey);
return {
secret: secret,
senderPublicKeyString: senderECKeyData.senderPublicKeyString
};
},
//Decrypt Data using private-key
decryptData: function (data, myPrivateKey) {
var receiverECKeyData = {};
if (typeof myPrivateKey !== "string") throw new Error("No private key found.");
let privateKey = this.wifToDecimal(myPrivateKey, true);
if (typeof privateKey.privateKeyDecimal !== "string") throw new Error(
"Failed to detremine your private key.");
receiverECKeyData.privateKey = privateKey.privateKeyDecimal;
var receiverDerivedKey = this.deriveReceiverSharedKey(data.senderPublicKeyString, receiverECKeyData
.privateKey);
console.log("receiverDerivedKey", receiverDerivedKey);
let receiverKey = receiverDerivedKey.XValue + receiverDerivedKey.YValue;
let decryptMsg = Crypto.AES.decrypt(data.secret, receiverKey);
return decryptMsg;
},
//Sign data using private-key
signData: function (data, privateKeyHex) {
var key = new Bitcoin.ECKey(privateKeyHex);
key.setCompressed(true);
var privateKeyArr = key.getBitcoinPrivateKeyByteArray();
privateKey = BigInteger.fromByteArrayUnsigned(privateKeyArr);
var messageHash = Crypto.SHA256(data);
var messageHashBigInteger = new BigInteger(messageHash);
var messageSign = Bitcoin.ECDSA.sign(messageHashBigInteger, key.priv);
var sighex = Crypto.util.bytesToHex(messageSign);
return sighex;
},
//Verify signatue of the data using public-key
verifySign: function (data, signatureHex, publicKeyHex) {
var msgHash = Crypto.SHA256(data);
var messageHashBigInteger = new BigInteger(msgHash);
var sigBytes = Crypto.util.hexToBytes(signatureHex);
var signature = Bitcoin.ECDSA.parseSig(sigBytes);
var publicKeyPoint = this.ecparams.getCurve().decodePointHex(publicKeyHex);
var verify = Bitcoin.ECDSA.verifyRaw(messageHashBigInteger, signature.r, signature.s,
publicKeyPoint);
return verify;
},
//Generates a new flo ID and returns private-key, public-key and floID
generateNewID: function () {
try {
var key = new Bitcoin.ECKey(false);
key.setCompressed(true);
return {
floID: key.getBitcoinAddress(),
pubKey: key.getPubKeyHex(),
privKey: key.getBitcoinWalletImportFormat()
}
} catch (e) {
console.log(e);
}
},
//Returns public-key from private-key
getPubKeyHex: function (privateKeyHex) {
var key = new Bitcoin.ECKey(privateKeyHex);
if (key.priv == null) {
alert("Invalid Private key");
return;
}
key.setCompressed(true);
var pubkeyHex = key.getPubKeyHex();
return pubkeyHex;
},
//Returns flo-ID from public-key
getFloIDfromPubkeyHex: function (pubkeyHex) {
var key = new Bitcoin.ECKey().setPub(pubkeyHex);
var floID = key.getBitcoinAddress();
return floID;
},
//Verify the private-key for the given public-key or flo-ID
verifyPrivKey: function (privateKeyHex, pubKey_floID, isfloID = true) {
try {
var key = new Bitcoin.ECKey(privateKeyHex);
if (key.priv == null)
return false;
key.setCompressed(true);
if (isfloID && pubKey_floID == key.getBitcoinAddress())
return true;
else if (!isfloID && pubKey_floID == key.getPubKeyHex())
return true;
else
return false;
} catch (e) {
console.log(e);
}
},
//Check if the given Address is valid or not
validateAddr: function (inpAddr) {
try {
var addr = new Bitcoin.Address(inpAddr);
return true;
} catch {
return false;
}
}
}
</script>
<script>
/* FLO Blockchain Operator to send/receive data from blockchain using API calls*/
const floBlockchainAPI = {
//Promised AJAX function to get data from API
promisedAJAX: function (method, uri) {
return new Promise((resolve, reject) => {
var request = new XMLHttpRequest();
var url = `${floGlobals.apiURL[floGlobals.blockchain]}/${uri}`;
console.log(url)
request.open(method, url, true);
request.onload = (evt) => {
if (request.readyState == 4 && request.status == 200)
resolve(request.response);
else
reject(request.response);
};
request.send();
});
},
//Get balance for the given Address
getBalance: function (addr) {
return new Promise((resolve, reject) => {
this.promisedAJAX("GET", `api/addr/${addr}/balance`).then(balance => {
resolve(parseFloat(balance));
}).catch(error => {
reject(error);
});
});
},
//Write Data into blockchain
writeData: function (senderAddr, Data, PrivKey, receiverAddr = floGlobals.adminID) {
return new Promise((resolve, reject) => {
this.sendTx(senderAddr, receiverAddr, floGlobals.sendAmt, PrivKey, Data).then(txid => {
resolve(txid);
}).catch(error => {
reject(error);
});
});
},
//Send Tx to blockchain
sendTx: function (senderAddr, receiverAddr, sendAmt, PrivKey, floData = '') {
return new Promise((resolve, reject) => {
if (!floCrypto.validateAddr(senderAddr))
reject(`Invalid address : ${senderAddr}`);
else if (!floCrypto.validateAddr(receiverAddr))
reject(`Invalid address : ${receiverAddr}`);
if (PrivKey.length < 1 || !floCrypto.verifyPrivKey(PrivKey, senderAddr))
reject("Invalid Private key!");
else if (typeof sendAmt !== 'number' || sendAmt <= 0)
reject(`Invalid sendAmt : ${sendAmt}`);
else {
var trx = bitjs.transaction();
var utxoAmt = 0.0;
var fee = floGlobals.fee;
this.promisedAJAX("GET", `api/addr/${senderAddr}/utxo`).then(response => {
var utxos = JSON.parse(response);
for (var i = utxos.length - 1;
(i >= 0) && (utxoAmt < sendAmt + fee); i--) {
if (utxos[i].confirmations) {
trx.addinput(utxos[i].txid, utxos[i].vout, utxos[i].scriptPubKey)
utxoAmt += utxos[i].amount;
} else break;
}
if (utxoAmt < sendAmt + fee)
reject("Insufficient balance!");
else {
trx.addoutput(receiverAddr, sendAmt);
var change = utxoAmt - sendAmt - fee;
if (change > 0)
trx.addoutput(senderAddr, change);
trx.addflodata(floData);
var signedTxHash = trx.sign(PrivKey, 1);
this.broadcastTx(signedTxHash).then(txid => {
resolve(txid)
}).catch(error => {
reject(error);
});
}
}).catch(error => {
reject(error);
});
}
});
},
//Broadcast signed Tx in blockchain using API
broadcastTx: function (signedTxHash) {
return new Promise((resolve, reject) => {
var request = new XMLHttpRequest();
var url = `${floGlobals.apiURL[floGlobals.blockchain]}/api/tx/send`;
if (signedTxHash.length < 1)
reject("Empty Signature");
else {
var params = `{"rawtx":"${signedTxHash}"}`;
var result;
request.open('POST', url, false);
//Send the proper header information along with the request
request.setRequestHeader('Content-type', 'application/json');
request.onload = function () {
if (request.readyState == 4 && request.status == 200) {
console.log(request.response);
resolve(JSON.parse(request.response).txid.result);
} else
reject(request.responseText);
}
request.send(params);
return result;
}
})
},
//Read Txs of Address between from and to
readTxs: function (addr, from, to) {
return new Promise((resolve, reject) => {
this.promisedAJAX("GET", `api/addrs/${addr}/txs?from=${from}&to=${to}`).then(response => {
resolve(JSON.parse(response));
}).catch(error => {
reject(error);
});
});
},
//Read All Txs of Address (newest first)
readAllTxs: function (addr) {
return new Promise((resolve, reject) => {
this.promisedAJAX("GET", `api/addrs/${addr}/txs?from=0&to=1`).then(response => {
var totalItems = JSON.parse(response).totalItems;
this.promisedAJAX("GET", `api/addrs/${addr}/txs?from=0&to=${totalItems}0`).then(response => {
resolve(JSON.parse(response).items);
}).catch(error => {
reject(error);
});
}).catch(error => {
reject(error);
});
});
},
//Read Data Sent from Address (if limit is specified, only return newest sent data)
readSentData: function (addr, limit = 0) {
return new Promise((resolve, reject) => {
this.readAllTxs(addr).then(items => {
var filteredItems = [];
if (limit <= 0) limit = items.length;
for (i = 0; i < items.length && filteredItems.length < limit; i++)
if (items[i].vin[0].addr === addr)
filteredItems.push(items[i].floData);
console.log(filteredItems);
resolve(filteredItems);
}).catch(error => {
reject(error)
});
});
},
//Read newest 'limit' Data matching 'pattern'
readDataPattern: function (addr, pattern, jsonType = false, limit = 1000) {
return new Promise((resolve, reject) => {
this.readAllTxs(addr).then(items => {
var filteredItems = [];
var pos = (jsonType ? 2 : 0);
for (i = 0; i < items.length && filteredItems.length < limit; i++)
if (items[i].floData.startsWith(pattern, pos))
filteredItems.push(items[i].floData);
resolve(filteredItems);
}).catch(error => {
reject(error)
});
});
},
//Read newest 'limit' Data Sent from Address and matching 'pattern'
readSentDataPattern: function (addr, pattern, jsonType = false, limit = 1000) {
return new Promise((resolve, reject) => {
this.readAllTxs(addr).then(items => {
var filteredItems = [];
var pos = (jsonType ? 2 : 0);
for (i = 0; i < items.length && filteredItems.length < limit; i++)
if (items[i].vin[0].addr === addr && items[i].floData.startsWith(pattern, pos))
filteredItems.push(items[i].floData);
resolve(filteredItems);
}).catch(error => {
reject(error)
});
});
},
//Read newest 'limit' Data containing 'keyword'
readDataContains: function (addr, keyword, limit = 1000) {
return new Promise((resolve, reject) => {
this.readAllTxs(addr).then(items => {
var filteredItems = [];
for (i = 0; i < items.length && filteredItems.length < limit; i++)
if (items[i].floData.includes(keyword))
filteredItems.push(items[i].floData);
resolve(filteredItems);
}).catch(error => {
reject(error)
});
});
},
//Read newest 'limit' Data Sent from Address and containing 'keyword'
readSentDataContains: function (addr, keyword, limit = 1000) {
return new Promise((resolve, reject) => {
this.readAllTxs(addr).then(items => {
var filteredItems = [];
for (i = 0; i < items.length && filteredItems.length < limit; i++)
if (items[i].vin[0].addr === addr && items[i].floData.includes(keyword))
filteredItems.push(items[i].floData);
resolve(filteredItems);
}).catch(error => {
reject(error)
});
});
}
}
</script>
<script>
/* flo Supernode Operators to send/receive data from supernodes using websocket */
const floSupernode = {
//kBucket object
kBucket: {
supernodeKBucket: null,
decodeBase58Address: function (address) {
let k = bitjs.Base58.decode(address)
k.shift()
k.splice(-4, 4)
return Crypto.util.bytesToHex(k)
},
floIdToKbucketId: function (address) {
const decodedId = this.decodeBase58Address(address);
const nodeIdBigInt = new BigInteger(decodedId, 16);
const nodeIdBytes = nodeIdBigInt.toByteArrayUnsigned();
const nodeIdNewInt8Array = new Uint8Array(nodeIdBytes);
return nodeIdNewInt8Array;
},
launch: function (superNodeList = Object.keys(floGlobals.supernodes), master_floID = floGlobals.adminID) {
return new Promise((resolve, reject) => {
try {
const SuKBucketId = this.floIdToKbucketId(master_floID);
const SukbOptions = {
localNodeId: SuKBucketId
}
this.supernodeKBucket = new BuildKBucket(SukbOptions);
for (var i = 0; i < superNodeList.length; i++) {
this.addNewNode(superNodeList[i])
}
resolve('SuperNode KBucket formed');
} catch (error) {
reject(error);
}
});
},
addContact: function (id, floID, KB = this.supernodeKBucket) {
const contact = {
id: id,
floID: floID
};
KB.add(contact)
},
addNewNode: function (address, KB = this.supernodeKBucket) {
let decodedId = address;
try {
decodedId = this.floIdToKbucketId(address);
} catch (e) {
decodedId = address;
}
this.addContact(decodedId, address, KB);
},
isNodePresent: function (flo_id, KB = this.supernodeKBucket) {
return new Promise((resolve, reject) => {
let kArray = KB.toArray();
let kArrayFloIds = kArray.map(k => k.data.id);
if (kArrayFloIds.includes(flo_id)) {
resolve(true);
} else {
reject(false);
}
});
},
determineClosestSupernode: function (flo_addr, n = 1, KB = this.supernodeKBucket) {
return new Promise((resolve, reject) => {
try {
let isFloIdUint8 = flo_addr instanceof Uint8Array;
if (!isFloIdUint8)
flo_addr = this.floIdToKbucketId(flo_addr);
const closestSupernode = KB.closest(flo_addr, n);
resolve(closestSupernode);
} catch (error) {
reject(error);
}
});
}
},
//Sends data to the supernode
sendData: function (data, floID) {
return new Promise((resolve, reject) => {
this.kBucket.determineClosestSupernode(floID).then(result => {
var websocket = new WebSocket("ws://" + floGlobals.supernodes[result[0].floID].uri + "/ws");
websocket.onopen = (evt) => {
websocket.send(data);
resolve(`Data sent to ${floID}'s supernode`);
websocket.close();
};
websocket.onerror = (evt) => {
reject(evt);
};
}).catch(error => {
reject(error);
});
});
},
//Request data from supernode
requestData: function (request, floID) {
return new Promise((resolve, reject) => {
this.kBucket.determineClosestSupernode(floID).then(result => {
var websocket = new WebSocket("ws://" + floGlobals.supernodes[result[0].floID].uri + "/ws");
websocket.onopen = (evt) => {
websocket.send(`?${request}`);
};
websocket.onmessage = (evt) => {
resolve(evt.data);
websocket.close();
};
websocket.onerror = (evt) => {
reject(evt);
};
}).catch(error => {
reject(error);
});
});
},
//Supernode initate (call this function only when client is authorized as supernode)
/* DO NOT edit this function
To edit the response or callback, edit the reactor eventListener given below
*/
initSupernode: function (pwd, floID) {
return new Promise((resolve, reject) => {
try {
this.supernodeClientWS = new WebSocket("ws://" + floGlobals.supernodes[floID].uri + "/ws");
this.supernodeClientWS.onopen = (evt) => {
this.supernodeClientWS.send("$" + pwd);
reactor.dispatchEvent('supernode_open', evt);
};
this.supernodeClientWS.onclose = (evt) => {
reactor.dispatchEvent('supernode_close', evt);
};
this.supernodeClientWS.onmessage = (evt) => {
if (evt.data[0] == '$') {
reactor.dispatchEvent('supernode_admin', evt.data.substr(1));
if (evt.data == '$Access Granted!')
resolve("Access Granted! Initiated Supernode client");
else if (evt.data == '$Access Denied!')
reject("Access Denied! Failed to initiate Supernode client");
} else if (evt.data[0] == '?')
reactor.dispatchEvent('supernode_processRequest', evt.data.substr(1));
else
reactor.dispatchEvent('supernode_processData', evt.data);
};
this.supernodeClientWS.onerror = (evt) => {
reactor.dispatchEvent('supernode_error', evt);
reject(evt);
};
} catch (error) {
reject(error)
}
});
}
}
//Event fired when connected to supernode websocket
reactor.registerEvent('supernode_open');
reactor.addEventListener('supernode_open', function (event) {
console.log('Connected to supernode websocket!');
});
//Event fired when disconnected from supernode websocket
reactor.registerEvent('supernode_close');
reactor.addEventListener('supernode_close', function (event) {
console.log('Disconnected from supernode websocket!');
});
//Event fired when connection error with supernode websocket
reactor.registerEvent('supernode_error');
reactor.addEventListener('supernode_error', function (event) {
console.log('Error! Unable to connect supernode websocket!');
});
//Event fired when received admin messages from WSS
reactor.registerEvent('supernode_admin');
reactor.addEventListener('supernode_admin', function (message) {
console.log('Admin Message :',message);
});
//Event fired during incoming request
reactor.registerEvent('supernode_processRequest');
reactor.addEventListener('supernode_processRequest', function (request) {
console.log('Request :',request);
});
//Event fired during incoming data
reactor.registerEvent('supernode_processData');
reactor.addEventListener('supernode_processData', function (data) {
console.log('Data :',data);
});
</script>
<script>
/* Compact IndexedDB operations */
window.indexedDB = window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || window.msIndexedDB;
window.IDBTransaction = window.IDBTransaction || window.webkitIDBTransaction || window.msIDBTransaction;
window.IDBKeyRange = window.IDBKeyRange || window.webkitIDBKeyRange || window.msIDBKeyRange;
if (!window.indexedDB)
window.alert("Your browser doesn't support a stable version of IndexedDB.")
const compactIDB = {
setDefaultDB: function (dbName) {
this.dbName = dbName;
},
initDB: function (dbName, objectStores = {}) {
return new Promise((resolve, reject) => {
this.dbName = this.dbName || dbName;
var idb = indexedDB.open(dbName);
idb.onerror = (event) => {
reject("Error in opening IndexedDB!");
};
idb.onupgradeneeded = (event) => {
var db = event.target.result;
for (obs in objectStores) {
var objectStore = db.createObjectStore(obs, objectStores[obs].options || {});
if (objectStores[obs].indexes && typeof objectStores[obs].indexes === 'object')
for (i in objectStores[obs].indexes)
objectStore.createIndex(i, i, objectStores[obs].indexes[i] || {});
}
}
idb.onsuccess = (event) => {
var db = event.target.result;
if (JSON.stringify(Object.values(db.objectStoreNames)) === JSON.stringify(Object.keys(
objectStores)))
resolve("Initiated IndexedDB");
else
reject("IndexedDB already exist with different ObjectStores!");
db.close();
}
});
},
openDB: function (dbName = this.dbName) {
return new Promise((resolve, reject) => {
var idb = indexedDB.open(dbName);
idb.onerror = (event) => reject("Error in opening IndexedDB!");
idb.onsuccess = (event) => resolve(event.target.result);
});
},
deleteDB: function (dbName = this.dbName) {
return new Promise((resolve, reject) => {
var deleteReq = indexedDB.deleteDatabase(dbName);;
deleteReq.onerror = (event) => reject("Error deleting database!");
deleteReq.onsuccess = (event) => resolve("Database deleted successfully");
});
},
writeData: function (obsName, data, key = false, dbName = this.dbName) {
return new Promise((resolve, reject) => {
this.openDB(dbName).then(db => {
var obs = db.transaction(obsName, "readwrite").objectStore(obsName);
let writeReq = (key ? obs.put(data, key) : obs.put(data));
writeReq.onsuccess = (evt) => resolve(`Write data Successful`);
writeReq.onerror = (evt) => reject(
`Write data unsuccessful [${evt.target.error.name}] ${evt.target.error.message}`);
db.close();
}).catch(error => reject(error));
});
},
addData: function (obsName, data, key = false, dbName = this.dbName) {
return new Promise((resolve, reject) => {
this.openDB(dbName).then(db => {
var obs = db.transaction(obsName, "readwrite").objectStore(obsName);
let addReq = (key ? obs.add(data, key) : obs.add(data));
addReq.onsuccess = (evt) => resolve(`Add data successful`);
addReq.onerror = (evt) => reject(
`Add data unsuccessful [${evt.target.error.name}] ${evt.target.error.message}`);
db.close();
}).catch(error => reject(error));
});
},
readData: function (obsName, key, dbName = this.dbName) {
return new Promise((resolve, reject) => {
this.openDB(dbName).then(db => {
var obs = db.transaction(obsName, "readonly").objectStore(obsName);
let getReq = obs.get(key);
getReq.onsuccess = (evt) => resolve(evt.target.result);
getReq.onerror = (evt) => reject(
`Read data unsuccessful [${evt.target.error.name}] ${evt.target.error.message}`);
db.close();
}).catch(error => reject(error));
});
},
readAllData: function (obsName, dbName = this.dbName) {
return new Promise((resolve, reject) => {
this.openDB(dbName).then(db => {
var obs = db.transaction(obsName, "readonly").objectStore(obsName);
var tmpResult = {}
let curReq = obs.openCursor();
curReq.onsuccess = (evt) => {
var cursor = evt.target.result;
if (cursor) {
tmpResult[cursor.primaryKey] = cursor.value;
cursor.continue();
} else
resolve(tmpResult);
}
curReq.onerror = (evt) => reject(
`Read-All data unsuccessful [${evt.target.error.name}] ${evt.target.error.message}`);
db.close();
}).catch(error => reject(error));
});
},
searchData: function (obsName, patternEval, dbName = this.dbName) {
return new Promise((resolve, reject) => {
this.openDB(dbName).then(db => {
var obs = db.transaction(obsName, "readonly").objectStore(obsName);
var filteredResult = {}
let curReq = obs.openCursor();
curReq.onsuccess = (evt) => {
var cursor = evt.target.result;
if (cursor) {
if (patternEval(cursor.primaryKey, cursor.value))
filteredResult[cursor.primaryKey] = cursor.value;
cursor.continue();
} else
resolve(filteredResult);
}
curReq.onerror = (evt) => reject(
`Search unsuccessful [${evt.target.error.name}] ${evt.target.error.message}`);
db.close();
}).catch(error => reject(error));
});
}
}
</script>
<script>
/*Kademlia DHT K-bucket implementation as a binary tree.*/
/**
* Implementation of a Kademlia DHT k-bucket used for storing
* contact (peer node) information.
*
* @extends EventEmitter
*/
function BuildKBucket(options = {}) {
/**
* `options`:
* `distance`: Function
* `function (firstId, secondId) { return distance }` An optional
* `distance` function that gets two `id` Uint8Arrays
* and return distance (as number) between them.
* `arbiter`: Function (Default: vectorClock arbiter)
* `function (incumbent, candidate) { return contact; }` An optional
* `arbiter` function that givent two `contact` objects with the same `id`
* returns the desired object to be used for updating the k-bucket. For
* more details, see [arbiter function](#arbiter-function).
* `localNodeId`: Uint8Array An optional Uint8Array representing the local node id.
* If not provided, a local node id will be created via `randomBytes(20)`.
* `metadata`: Object (Default: {}) Optional satellite data to include
* with the k-bucket. `metadata` property is guaranteed not be altered by,
* it is provided as an explicit container for users of k-bucket to store
* implementation-specific data.
* `numberOfNodesPerKBucket`: Integer (Default: 20) The number of nodes
* that a k-bucket can contain before being full or split.
* `numberOfNodesToPing`: Integer (Default: 3) The number of nodes to
* ping when a bucket that should not be split becomes full. KBucket will
* emit a `ping` event that contains `numberOfNodesToPing` nodes that have
* not been contacted the longest.
*
* @param {Object=} options optional
*/
this.localNodeId = options.localNodeId || window.crypto.getRandomValues(new Uint8Array(20))
this.numberOfNodesPerKBucket = options.numberOfNodesPerKBucket || 20
this.numberOfNodesToPing = options.numberOfNodesToPing || 3
this.distance = options.distance || this.distance
// use an arbiter from options or vectorClock arbiter by default
this.arbiter = options.arbiter || this.arbiter
this.metadata = Object.assign({}, options.metadata)
this.createNode = function () {
return {
contacts: [],
dontSplit: false,
left: null,
right: null
}
}
this.ensureInt8 = function (name, val) {
if (!(val instanceof Uint8Array)) {
throw new TypeError(name + ' is not a Uint8Array')
}
}
/**
* @param {Uint8Array} array1
* @param {Uint8Array} array2
* @return {Boolean}
*/
this.arrayEquals = function (array1, array2) {
if (array1 === array2) {
return true
}
if (array1.length !== array2.length) {
return false
}
for (let i = 0, length = array1.length; i < length; ++i) {
if (array1[i] !== array2[i]) {
return false
}
}
return true
}
this.ensureInt8('option.localNodeId as parameter 1', this.localNodeId)
this.root = this.createNode()
/**
* Default arbiter function for contacts with the same id. Uses
* contact.vectorClock to select which contact to update the k-bucket with.
* Contact with larger vectorClock field will be selected. If vectorClock is
* the same, candidat will be selected.
*
* @param {Object} incumbent Contact currently stored in the k-bucket.
* @param {Object} candidate Contact being added to the k-bucket.
* @return {Object} Contact to updated the k-bucket with.
*/
this.arbiter = function (incumbent, candidate) {
return incumbent.vectorClock > candidate.vectorClock ? incumbent : candidate
}
/**
* Default distance function. Finds the XOR
* distance between firstId and secondId.
*
* @param {Uint8Array} firstId Uint8Array containing first id.
* @param {Uint8Array} secondId Uint8Array containing second id.
* @return {Number} Integer The XOR distance between firstId
* and secondId.
*/
this.distance = function (firstId, secondId) {
let distance = 0
let i = 0
const min = Math.min(firstId.length, secondId.length)
const max = Math.max(firstId.length, secondId.length)
for (; i < min; ++i) {
distance = distance * 256 + (firstId[i] ^ secondId[i])
}
for (; i < max; ++i) distance = distance * 256 + 255
return distance
}
/**
* Adds a contact to the k-bucket.
*
* @param {Object} contact the contact object to add
*/
this.add = function (contact) {
this.ensureInt8('contact.id', (contact || {}).id)
let bitIndex = 0
let node = this.root
while (node.contacts === null) {
// this is not a leaf node but an inner node with 'low' and 'high'
// branches; we will check the appropriate bit of the identifier and
// delegate to the appropriate node for further processing
node = this._determineNode(node, contact.id, bitIndex++)
}
// check if the contact already exists
const index = this._indexOf(node, contact.id)
if (index >= 0) {
this._update(node, index, contact)
return this
}
if (node.contacts.length < this.numberOfNodesPerKBucket) {
node.contacts.push(contact)
return this
}
// the bucket is full
if (node.dontSplit) {
// we are not allowed to split the bucket
// we need to ping the first this.numberOfNodesToPing
// in order to determine if they are alive
// only if one of the pinged nodes does not respond, can the new contact
// be added (this prevents DoS flodding with new invalid contacts)
return this
}
this._split(node, bitIndex)
return this.add(contact)
}
/**
* Get the n closest contacts to the provided node id. "Closest" here means:
* closest according to the XOR metric of the contact node id.
*
* @param {Uint8Array} id Contact node id
* @param {Number=} n Integer (Default: Infinity) The maximum number of
* closest contacts to return
* @return {Array} Array Maximum of n closest contacts to the node id
*/
this.closest = function (id, n = Infinity) {
this.ensureInt8('id', id)
if ((!Number.isInteger(n) && n !== Infinity) || n <= 0) {
throw new TypeError('n is not positive number')
}
let contacts = []
for (let nodes = [this.root], bitIndex = 0; nodes.length > 0 && contacts.length < n;) {
const node = nodes.pop()
if (node.contacts === null) {
const detNode = this._determineNode(node, id, bitIndex++)
nodes.push(node.left === detNode ? node.right : node.left)
nodes.push(detNode)
} else {
contacts = contacts.concat(node.contacts)
}
}
return contacts
.map(a => [this.distance(a.id, id), a])
.sort((a, b) => a[0] - b[0])
.slice(0, n)
.map(a => a[1])
}
/**
* Counts the total number of contacts in the tree.
*
* @return {Number} The number of contacts held in the tree
*/
this.count = function () {
// return this.toArray().length
let count = 0
for (const nodes = [this.root]; nodes.length > 0;) {
const node = nodes.pop()
if (node.contacts === null) nodes.push(node.right, node.left)
else count += node.contacts.length
}
return count
}
/**
* Determines whether the id at the bitIndex is 0 or 1.
* Return left leaf if `id` at `bitIndex` is 0, right leaf otherwise
*
* @param {Object} node internal object that has 2 leafs: left and right
* @param {Uint8Array} id Id to compare localNodeId with.
* @param {Number} bitIndex Integer (Default: 0) The bit index to which bit
* to check in the id Uint8Array.
* @return {Object} left leaf if id at bitIndex is 0, right leaf otherwise.
*/
this._determineNode = function (node, id, bitIndex) {
// *NOTE* remember that id is a Uint8Array and has granularity of
// bytes (8 bits), whereas the bitIndex is the bit index (not byte)
// id's that are too short are put in low bucket (1 byte = 8 bits)
// (bitIndex >> 3) finds how many bytes the bitIndex describes
// bitIndex % 8 checks if we have extra bits beyond byte multiples
// if number of bytes is <= no. of bytes described by bitIndex and there
// are extra bits to consider, this means id has less bits than what
// bitIndex describes, id therefore is too short, and will be put in low
// bucket
const bytesDescribedByBitIndex = bitIndex >> 3
const bitIndexWithinByte = bitIndex % 8
if ((id.length <= bytesDescribedByBitIndex) && (bitIndexWithinByte !== 0)) {
return node.left
}
const byteUnderConsideration = id[bytesDescribedByBitIndex]
// byteUnderConsideration is an integer from 0 to 255 represented by 8 bits
// where 255 is 11111111 and 0 is 00000000
// in order to find out whether the bit at bitIndexWithinByte is set
// we construct (1 << (7 - bitIndexWithinByte)) which will consist
// of all bits being 0, with only one bit set to 1
// for example, if bitIndexWithinByte is 3, we will construct 00010000 by
// (1 << (7 - 3)) -> (1 << 4) -> 16
if (byteUnderConsideration & (1 << (7 - bitIndexWithinByte))) {
return node.right
}
return node.left
}
/**
* Get a contact by its exact ID.
* If this is a leaf, loop through the bucket contents and return the correct
* contact if we have it or null if not. If this is an inner node, determine
* which branch of the tree to traverse and repeat.
*
* @param {Uint8Array} id The ID of the contact to fetch.
* @return {Object|Null} The contact if available, otherwise null
*/
this.get = function (id) {
this.ensureInt8('id', id)
let bitIndex = 0
let node = this.root
while (node.contacts === null) {
node = this._determineNode(node, id, bitIndex++)
}
// index of uses contact id for matching
const index = this._indexOf(node, id)
return index >= 0 ? node.contacts[index] : null
}
/**
* Returns the index of the contact with provided
* id if it exists, returns -1 otherwise.
*
* @param {Object} node internal object that has 2 leafs: left and right
* @param {Uint8Array} id Contact node id.
* @return {Number} Integer Index of contact with provided id if it
* exists, -1 otherwise.
*/
this._indexOf = function (node, id) {
for (let i = 0; i < node.contacts.length; ++i) {
if (this.arrayEquals(node.contacts[i].id, id)) return i
}
return -1
}
/**
* Removes contact with the provided id.
*
* @param {Uint8Array} id The ID of the contact to remove.
* @return {Object} The k-bucket itself.
*/
this.remove = function (id) {
this.ensureInt8('the id as parameter 1', id)
let bitIndex = 0
let node = this.root
while (node.contacts === null) {
node = this._determineNode(node, id, bitIndex++)
}
const index = this._indexOf(node, id)
if (index >= 0) {
const contact = node.contacts.splice(index, 1)[0]
}
return this
}
/**
* Splits the node, redistributes contacts to the new nodes, and marks the
* node that was split as an inner node of the binary tree of nodes by
* setting this.root.contacts = null
*
* @param {Object} node node for splitting
* @param {Number} bitIndex the bitIndex to which byte to check in the
* Uint8Array for navigating the binary tree
*/
this._split = function (node, bitIndex) {
node.left = this.createNode()
node.right = this.createNode()
// redistribute existing contacts amongst the two newly created nodes
for (const contact of node.contacts) {
this._determineNode(node, contact.id, bitIndex).contacts.push(contact)
}
node.contacts = null // mark as inner tree node
// don't split the "far away" node
// we check where the local node would end up and mark the other one as
// "dontSplit" (i.e. "far away")
const detNode = this._determineNode(node, this.localNodeId, bitIndex)
const otherNode = node.left === detNode ? node.right : node.left
otherNode.dontSplit = true
}
/**
* Returns all the contacts contained in the tree as an array.
* If this is a leaf, return a copy of the bucket. `slice` is used so that we
* don't accidentally leak an internal reference out that might be
* accidentally misused. If this is not a leaf, return the union of the low
* and high branches (themselves also as arrays).
*
* @return {Array} All of the contacts in the tree, as an array
*/
this.toArray = function () {
let result = []
for (const nodes = [this.root]; nodes.length > 0;) {
const node = nodes.pop()
if (node.contacts === null) nodes.push(node.right, node.left)
else result = result.concat(node.contacts)
}
return result
}
/**
* Updates the contact selected by the arbiter.
* If the selection is our old contact and the candidate is some new contact
* then the new contact is abandoned (not added).
* If the selection is our old contact and the candidate is our old contact
* then we are refreshing the contact and it is marked as most recently
* contacted (by being moved to the right/end of the bucket array).
* If the selection is our new contact, the old contact is removed and the new
* contact is marked as most recently contacted.
*
* @param {Object} node internal object that has 2 leafs: left and right
* @param {Number} index the index in the bucket where contact exists
* (index has already been computed in a previous
* calculation)
* @param {Object} contact The contact object to update.
*/
this._update = function (node, index, contact) {
// sanity check
if (!this.arrayEquals(node.contacts[index].id, contact.id)) {
throw new Error('wrong index for _update')
}
const incumbent = node.contacts[index]
const selection = this.arbiter(incumbent, contact)
// if the selection is our old contact and the candidate is some new
// contact, then there is nothing to do
if (selection === incumbent && incumbent !== contact) return
node.contacts.splice(index, 1) // remove old contact
node.contacts.push(selection) // add more recent contact version
}
}
</script>
</body>
</html>
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