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bring formatting in line with bitcore standards

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This commit is contained in:
Ryan X. Charles 2014-03-16 16:16:03 -07:00
parent fa47ee9984
commit 31a024a20b
1 changed files with 269 additions and 263 deletions
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70
BIP32.js
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@ -1,3 +1,6 @@
var EncodedData = require('./util/EncodedData');
var base58 = imports.base58 || require('base58-native').base58Check;
var BITCOIN_MAINNET_PUBLIC = 0x0488b21e; var BITCOIN_MAINNET_PUBLIC = 0x0488b21e;
var BITCOIN_MAINNET_PRIVATE = 0x0488ade4; var BITCOIN_MAINNET_PRIVATE = 0x0488ade4;
var BITCOIN_TESTNET_PUBLIC = 0x043587cf; var BITCOIN_TESTNET_PUBLIC = 0x043587cf;
@ -13,29 +16,30 @@ var LITECOIN_TESTNET_PRIVATE = 0x0436ef7d;
var BIP32 = function(bytes) { var BIP32 = function(bytes) {
// decode base58 // decode base58
if( typeof bytes === "string" ) { if (typeof bytes === "string") {
var decoded = Bitcoin.Base58.decode(bytes); var decoded = base58.decode(bytes);
if( decoded.length != 82 ) throw new Error("Not enough data"); if (decoded.length != 82)
throw new Error("Not enough data");
var checksum = decoded.slice(78, 82); var checksum = decoded.slice(78, 82);
bytes = decoded.slice(0, 78); bytes = decoded.slice(0, 78);
var hash = Crypto.SHA256( Crypto.SHA256( bytes, { asBytes: true } ), { asBytes: true } ); var hash = Crypto.SHA256(Crypto.SHA256(bytes, {asBytes: true}), {asBytes: true});
if( hash[0] != checksum[0] || hash[1] != checksum[1] || hash[2] != checksum[2] || hash[3] != checksum[3] ) { if (hash[0] != checksum[0] || hash[1] != checksum[1] || hash[2] != checksum[2] || hash[3] != checksum[3]) {
throw new Error("Invalid checksum"); throw new Error("Invalid checksum");
} }
} }
if( bytes !== undefined ) if (bytes !== undefined)
this.init_from_bytes(bytes); this.init_from_bytes(bytes);
} }
BIP32.prototype.init_from_bytes = function(bytes) { BIP32.prototype.init_from_bytes = function(bytes) {
// Both pub and private extended keys are 78 bytes // Both pub and private extended keys are 78 bytes
if( bytes.length != 78 ) throw new Error("not enough data"); if(bytes.length != 78) throw new Error("not enough data");
this.version = u32(bytes.slice(0, 4)); this.version = u32(bytes.slice(0, 4));
this.depth = u8 (bytes.slice(4, 5)); this.depth = u8(bytes.slice(4, 5));
this.parent_fingerprint = bytes.slice(5, 9); this.parent_fingerprint = bytes.slice(5, 9);
this.child_index = u32(bytes.slice(9, 13)); this.child_index = u32(bytes.slice(9, 13));
this.chain_code = bytes.slice(13, 45); this.chain_code = bytes.slice(13, 45);
@ -58,7 +62,7 @@ BIP32.prototype.init_from_bytes = function(bytes) {
this.version == LITECOIN_MAINNET_PUBLIC || this.version == LITECOIN_MAINNET_PUBLIC ||
this.version == LITECOIN_TESTNET_PUBLIC ); this.version == LITECOIN_TESTNET_PUBLIC );
if( is_private && key_bytes[0] == 0 ) { if (is_private && key_bytes[0] == 0) {
this.eckey = new Bitcoin.ECKey(key_bytes.slice(1, 33)); this.eckey = new Bitcoin.ECKey(key_bytes.slice(1, 33));
this.eckey.setCompressed(true); this.eckey.setCompressed(true);
@ -67,7 +71,7 @@ BIP32.prototype.init_from_bytes = function(bytes) {
this.eckey.pub = pt; this.eckey.pub = pt;
this.eckey.pubKeyHash = Bitcoin.Util.sha256ripe160(this.eckey.pub.getEncoded(true)); this.eckey.pubKeyHash = Bitcoin.Util.sha256ripe160(this.eckey.pub.getEncoded(true));
this.has_private_key = true; this.has_private_key = true;
} else if( is_public && (key_bytes[0] == 0x02 || key_bytes[0] == 0x03) ) { } else if (is_public && (key_bytes[0] == 0x02 || key_bytes[0] == 0x03)) {
this.eckey = new Bitcoin.ECKey(); this.eckey = new Bitcoin.ECKey();
this.eckey.pub = decompress_pubkey(key_bytes); this.eckey.pub = decompress_pubkey(key_bytes);
this.eckey.pubKeyHash = Bitcoin.Util.sha256ripe160(this.eckey.pub.getEncoded(true)); this.eckey.pubKeyHash = Bitcoin.Util.sha256ripe160(this.eckey.pub.getEncoded(true));
@ -140,12 +144,12 @@ BIP32.prototype.build_extended_public_key = function() {
} }
BIP32.prototype.extended_public_key_string = function(format) { BIP32.prototype.extended_public_key_string = function(format) {
if( format === undefined || format === "base58" ) { if (format === undefined || format === "base58") {
var hash = Crypto.SHA256( Crypto.SHA256( this.extended_public_key, { asBytes: true } ), { asBytes: true } ); var hash = Crypto.SHA256(Crypto.SHA256(this.extended_public_key, {asBytes: true} ), {asBytes: true});
var checksum = hash.slice(0, 4); var checksum = hash.slice(0, 4);
var data = this.extended_public_key.concat(checksum); var data = this.extended_public_key.concat(checksum);
return Bitcoin.Base58.encode(data); return Bitcoin.Base58.encode(data);
} else if( format === "hex" ) { } else if (format === "hex") {
return Crypto.util.bytesToHex(this.extended_public_key); return Crypto.util.bytesToHex(this.extended_public_key);
} else { } else {
throw new Error("bad format"); throw new Error("bad format");
@ -153,7 +157,7 @@ BIP32.prototype.extended_public_key_string = function(format) {
} }
BIP32.prototype.build_extended_private_key = function() { BIP32.prototype.build_extended_private_key = function() {
if( !this.has_private_key ) return; if (!this.has_private_key) return;
this.extended_private_key = []; this.extended_private_key = [];
var v = this.version; var v = this.version;
@ -185,8 +189,8 @@ BIP32.prototype.build_extended_private_key = function() {
} }
BIP32.prototype.extended_private_key_string = function(format) { BIP32.prototype.extended_private_key_string = function(format) {
if( format === undefined || format === "base58" ) { if (format === undefined || format === "base58") {
var hash = Crypto.SHA256( Crypto.SHA256( this.extended_private_key, { asBytes: true } ), { asBytes: true } ); var hash = Crypto.SHA256(Crypto.SHA256(this.extended_private_key, {asBytes: true}), {asBytes: true});
var checksum = hash.slice(0, 4); var checksum = hash.slice(0, 4);
var data = this.extended_private_key.concat(checksum); var data = this.extended_private_key.concat(checksum);
return Bitcoin.Base58.encode(data); return Bitcoin.Base58.encode(data);
@ -202,14 +206,15 @@ BIP32.prototype.derive = function(path) {
var e = path.split('/'); var e = path.split('/');
// Special cases: // Special cases:
if( path == 'm' || path == 'M' || path == 'm\'' || path == 'M\'' ) return this; if (path == 'm' || path == 'M' || path == 'm\'' || path == 'M\'')
return this;
var bip32 = this; var bip32 = this;
for( var i in e ) { for (var i in e) {
var c = e[i]; var c = e[i];
if( i == 0 ) { if (i == 0 ) {
if( c != 'm' ) throw new Error("invalid path"); if (c != 'm') throw new Error("invalid path");
continue; continue;
} }
@ -227,10 +232,10 @@ BIP32.prototype.derive = function(path) {
BIP32.prototype.derive_child = function(i) { BIP32.prototype.derive_child = function(i) {
var ib = []; var ib = [];
ib.push( (i >> 24) & 0xff ); ib.push((i >> 24) & 0xff);
ib.push( (i >> 16) & 0xff ); ib.push((i >> 16) & 0xff);
ib.push( (i >> 8) & 0xff ); ib.push((i >> 8) & 0xff);
ib.push( i & 0xff ); ib.push(i & 0xff );
var use_private = (i & 0x80000000) != 0; var use_private = (i & 0x80000000) != 0;
var ecparams = getSECCurveByName("secp256k1"); var ecparams = getSECCurveByName("secp256k1");
@ -243,13 +248,14 @@ BIP32.prototype.derive_child = function(i) {
this.version == LITECOIN_MAINNET_PRIVATE || this.version == LITECOIN_MAINNET_PRIVATE ||
this.version == LITECOIN_TESTNET_PRIVATE); this.version == LITECOIN_TESTNET_PRIVATE);
if( use_private && (!this.has_private_key || !is_private) ) throw new Error("Cannot do private key derivation without private key"); if (use_private && (!this.has_private_key || !is_private))
throw new Error("Cannot do private key derivation without private key");
var ret = null; var ret = null;
if( this.has_private_key ) { if (this.has_private_key) {
var data = null; var data = null;
if( use_private ) { if (use_private) {
data = [0].concat(this.eckey.priv.toByteArrayUnsigned()).concat(ib); data = [0].concat(this.eckey.priv.toByteArrayUnsigned()).concat(ib);
} else { } else {
data = this.eckey.pub.getEncoded(true).concat(ib); data = this.eckey.pub.getEncoded(true).concat(ib);
@ -315,10 +321,10 @@ function uint(f, size) {
return n; return n;
} }
function u8(f) { return uint(f,1); } function u8(f) {return uint(f,1);}
function u16(f) { return uint(f,2); } function u16(f) {return uint(f,2);}
function u32(f) { return uint(f,4); } function u32(f) {return uint(f,4);}
function u64(f) { return uint(f,8); } function u64(f) {return uint(f,8);}
function decompress_pubkey(key_bytes) { function decompress_pubkey(key_bytes) {
var y_bit = u8(key_bytes.slice(0, 1)) & 0x01; var y_bit = u8(key_bytes.slice(0, 1)) & 0x01;
@ -341,7 +347,7 @@ function decompress_pubkey(key_bytes) {
var y = tmp.modSqrt(p); var y = tmp.modSqrt(p);
// flip sign if we need to // flip sign if we need to
if( (y[0] & 0x01) != y_bit ) { if ((y[0] & 0x01) != y_bit) {
y = y.multiply(new BigInteger("-1")).mod(p); y = y.multiply(new BigInteger("-1")).mod(p);
} }