Adding 3rd party Scrypt library
This will allow us to start checking a blockhash against a solution submitted to the database. Details on this in the ticket. Just a WIP to save file states. Addresses #405
This commit is contained in:
Sebastian Grewe
parent
3da5a226e1
commit
0f69032fd3
@ -33,3 +33,4 @@ require_once(CLASS_DIR . '/mail.class.php');
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require_once(CLASS_DIR . '/notification.class.php');
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require_once(CLASS_DIR . '/news.class.php');
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require_once(INCLUDE_DIR . '/lib/Michelf/Markdown.php');
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require_once(INCLUDE_DIR . '/lib/scrypt.php');
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526
public/include/lib/scrypt.php
Normal file
526
public/include/lib/scrypt.php
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@ -0,0 +1,526 @@
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<?php
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/**
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* Zend Framework (http://framework.zend.com/)
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*
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* @link http://github.com/zendframework/zf2 for the canonical source repository
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* @copyright Copyright (c) 2005-2013 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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*/
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/**
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* Scrypt key derivation function
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*
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* @see http://www.tarsnap.com/scrypt.html
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* @see https://tools.ietf.org/html/draft-josefsson-scrypt-kdf-01
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*/
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abstract class Scrypt
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{
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/**
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* Execute the scrypt algorithm
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*
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* @param string $password
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* @param string $salt
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* @param integer $n CPU cost
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* @param integer $r Memory cost
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* @param integer $p parallelization cost
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* @param integer $length size of the output key
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* @return string
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*/
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public static function calc($password, $salt, $n, $r, $p, $length)
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{
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if ($n == 0 || ($n & ($n - 1)) != 0) {
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throw new Exception\InvalidArgumentException("N must be > 0 and a power of 2");
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}
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if ($n > PHP_INT_MAX / 128 / $r) {
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throw new Exception\InvalidArgumentException("Parameter n is too large");
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}
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if ($r > PHP_INT_MAX / 128 / $p) {
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throw new Exception\InvalidArgumentException("Parameter r is too large");
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}
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if (extension_loaded('Scrypt')) {
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if ($length < 16) {
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throw new Exception\InvalidArgumentException("Key length is too low, must be greater or equal to 16");
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}
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return self::hex2bin(scrypt($password, $salt, $n, $r, $p, $length));
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}
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$b = Pbkdf2::calc('sha256', $password, $salt, 1, $p * 128 * $r);
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$s = '';
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for ($i = 0; $i < $p; $i++) {
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$s .= self::scryptROMix(substr($b, $i * 128 * $r, 128 * $r), $n, $r);
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}
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return Pbkdf2::calc('sha256', $password, $s, 1, $length);
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}
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/**
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* scryptROMix
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*
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* @param string $b
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* @param integer $n
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* @param integer $r
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* @return string
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* @see https://tools.ietf.org/html/draft-josefsson-scrypt-kdf-01#section-4
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*/
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protected static function scryptROMix($b, $n, $r)
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{
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$x = $b;
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$v = array();
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for ($i = 0; $i < $n; $i++) {
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$v[$i] = $x;
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$x = self::scryptBlockMix($x, $r);
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}
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for ($i = 0; $i < $n; $i++) {
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$j = self::integerify($x) % $n;
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$t = $x ^ $v[$j];
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$x = self::scryptBlockMix($t, $r);
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}
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return $x;
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}
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/**
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* scryptBlockMix
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*
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* @param string $b
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* @param integer $r
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* @return string
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* @see https://tools.ietf.org/html/draft-josefsson-scrypt-kdf-01#section-3
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*/
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protected static function scryptBlockMix($b, $r)
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{
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$x = substr($b, -64);
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$even = '';
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$odd = '';
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$len = 2 * $r;
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for ($i = 0; $i < $len; $i++) {
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if (PHP_INT_SIZE === 4) {
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$x = self::salsa208Core32($x ^ substr($b, 64 * $i, 64));
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} else {
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$x = self::salsa208Core64($x ^ substr($b, 64 * $i, 64));
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}
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if ($i % 2 == 0) {
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$even .= $x;
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} else {
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$odd .= $x;
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}
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}
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return $even . $odd;
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}
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/**
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* Salsa 20/8 core (32 bit version)
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*
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* @param string $b
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* @return string
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* @see https://tools.ietf.org/html/draft-josefsson-scrypt-kdf-01#section-2
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* @see http://cr.yp.to/salsa20.html
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*/
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protected static function salsa208Core32($b)
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{
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$b32 = array();
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for ($i = 0; $i < 16; $i++) {
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list(, $b32[$i]) = unpack("V", substr($b, $i * 4, 4));
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}
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$x = $b32;
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for ($i = 0; $i < 8; $i += 2) {
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$a = ($x[ 0] + $x[12]);
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$x[ 4] ^= ($a << 7) | ($a >> 25) & 0x7f;
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$a = ($x[ 4] + $x[ 0]);
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$x[ 8] ^= ($a << 9) | ($a >> 23) & 0x1ff;
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$a = ($x[ 8] + $x[ 4]);
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$x[12] ^= ($a << 13) | ($a >> 19) & 0x1fff;
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$a = ($x[12] + $x[ 8]);
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$x[ 0] ^= ($a << 18) | ($a >> 14) & 0x3ffff;
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$a = ($x[ 5] + $x[ 1]);
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$x[ 9] ^= ($a << 7) | ($a >> 25) & 0x7f;
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$a = ($x[ 9] + $x[ 5]);
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$x[13] ^= ($a << 9) | ($a >> 23) & 0x1ff;
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$a = ($x[13] + $x[ 9]);
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$x[ 1] ^= ($a << 13) | ($a >> 19) & 0x1fff;
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$a = ($x[ 1] + $x[13]);
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$x[ 5] ^= ($a << 18) | ($a >> 14) & 0x3ffff;
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$a = ($x[10] + $x[ 6]);
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$x[14] ^= ($a << 7) | ($a >> 25) & 0x7f;
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$a = ($x[14] + $x[10]);
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$x[ 2] ^= ($a << 9) | ($a >> 23) & 0x1ff;
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$a = ($x[ 2] + $x[14]);
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$x[ 6] ^= ($a << 13) | ($a >> 19) & 0x1fff;
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$a = ($x[ 6] + $x[ 2]);
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$x[10] ^= ($a << 18) | ($a >> 14) & 0x3ffff;
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$a = ($x[15] + $x[11]);
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$x[ 3] ^= ($a << 7) | ($a >> 25) & 0x7f;
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$a = ($x[ 3] + $x[15]);
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$x[ 7] ^= ($a << 9) | ($a >> 23) & 0x1ff;
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$a = ($x[ 7] + $x[ 3]);
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$x[11] ^= ($a << 13) | ($a >> 19) & 0x1fff;
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$a = ($x[11] + $x[ 7]);
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$x[15] ^= ($a << 18) | ($a >> 14) & 0x3ffff;
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$a = ($x[ 0] + $x[ 3]);
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$x[ 1] ^= ($a << 7) | ($a >> 25) & 0x7f;
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$a = ($x[ 1] + $x[ 0]);
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$x[ 2] ^= ($a << 9) | ($a >> 23) & 0x1ff;
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$a = ($x[ 2] + $x[ 1]);
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$x[ 3] ^= ($a << 13) | ($a >> 19) & 0x1fff;
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$a = ($x[ 3] + $x[ 2]);
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$x[ 0] ^= ($a << 18) | ($a >> 14) & 0x3ffff;
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$a = ($x[ 5] + $x[ 4]);
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$x[ 6] ^= ($a << 7) | ($a >> 25) & 0x7f;
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$a = ($x[ 6] + $x[ 5]);
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$x[ 7] ^= ($a << 9) | ($a >> 23) & 0x1ff;
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$a = ($x[ 7] + $x[ 6]);
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$x[ 4] ^= ($a << 13) | ($a >> 19) & 0x1fff;
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$a = ($x[ 4] + $x[ 7]);
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$x[ 5] ^= ($a << 18) | ($a >> 14) & 0x3ffff;
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$a = ($x[10] + $x[ 9]);
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$x[11] ^= ($a << 7) | ($a >> 25) & 0x7f;
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$a = ($x[11] + $x[10]);
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$x[ 8] ^= ($a << 9) | ($a >> 23) & 0x1ff;
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$a = ($x[ 8] + $x[11]);
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$x[ 9] ^= ($a << 13) | ($a >> 19) & 0x1fff;
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$a = ($x[ 9] + $x[ 8]);
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$x[10] ^= ($a << 18) | ($a >> 14) & 0x3ffff;
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$a = ($x[15] + $x[14]);
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$x[12] ^= ($a << 7) | ($a >> 25) & 0x7f;
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$a = ($x[12] + $x[15]);
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$x[13] ^= ($a << 9) | ($a >> 23) & 0x1ff;
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$a = ($x[13] + $x[12]);
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$x[14] ^= ($a << 13) | ($a >> 19) & 0x1fff;
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$a = ($x[14] + $x[13]);
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$x[15] ^= ($a << 18) | ($a >> 14) & 0x3ffff;
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}
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for ($i = 0; $i < 16; $i++) {
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$b32[$i] = $b32[$i] + $x[$i];
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}
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$result = '';
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for ($i = 0; $i < 16; $i++) {
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$result .= pack("V", $b32[$i]);
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}
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return $result;
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}
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/**
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* Salsa 20/8 core (64 bit version)
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*
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* @param string $b
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* @return string
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* @see https://tools.ietf.org/html/draft-josefsson-scrypt-kdf-01#section-2
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* @see http://cr.yp.to/salsa20.html
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*/
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protected static function salsa208Core64($b)
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{
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$b32 = array();
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for ($i = 0; $i < 16; $i++) {
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list(, $b32[$i]) = unpack("V", substr($b, $i * 4, 4));
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}
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$x = $b32;
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for ($i = 0; $i < 8; $i += 2) {
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$a = ($x[ 0] + $x[12]) & 0xffffffff;
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$x[ 4] ^= ($a << 7) | ($a >> 25);
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$a = ($x[ 4] + $x[ 0]) & 0xffffffff;
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$x[ 8] ^= ($a << 9) | ($a >> 23);
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$a = ($x[ 8] + $x[ 4]) & 0xffffffff;
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$x[12] ^= ($a << 13) | ($a >> 19);
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$a = ($x[12] + $x[ 8]) & 0xffffffff;
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$x[ 0] ^= ($a << 18) | ($a >> 14);
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$a = ($x[ 5] + $x[ 1]) & 0xffffffff;
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$x[ 9] ^= ($a << 7) | ($a >> 25);
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$a = ($x[ 9] + $x[ 5]) & 0xffffffff;
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$x[13] ^= ($a << 9) | ($a >> 23);
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$a = ($x[13] + $x[ 9]) & 0xffffffff;
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$x[ 1] ^= ($a << 13) | ($a >> 19);
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$a = ($x[ 1] + $x[13]) & 0xffffffff;
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$x[ 5] ^= ($a << 18) | ($a >> 14);
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$a = ($x[10] + $x[ 6]) & 0xffffffff;
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$x[14] ^= ($a << 7) | ($a >> 25);
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$a = ($x[14] + $x[10]) & 0xffffffff;
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$x[ 2] ^= ($a << 9) | ($a >> 23);
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$a = ($x[ 2] + $x[14]) & 0xffffffff;
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$x[ 6] ^= ($a << 13) | ($a >> 19);
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$a = ($x[ 6] + $x[ 2]) & 0xffffffff;
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$x[10] ^= ($a << 18) | ($a >> 14);
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$a = ($x[15] + $x[11]) & 0xffffffff;
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$x[ 3] ^= ($a << 7) | ($a >> 25);
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$a = ($x[ 3] + $x[15]) & 0xffffffff;
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$x[ 7] ^= ($a << 9) | ($a >> 23);
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$a = ($x[ 7] + $x[ 3]) & 0xffffffff;
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$x[11] ^= ($a << 13) | ($a >> 19);
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$a = ($x[11] + $x[ 7]) & 0xffffffff;
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$x[15] ^= ($a << 18) | ($a >> 14);
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$a = ($x[ 0] + $x[ 3]) & 0xffffffff;
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$x[ 1] ^= ($a << 7) | ($a >> 25);
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$a = ($x[ 1] + $x[ 0]) & 0xffffffff;
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$x[ 2] ^= ($a << 9) | ($a >> 23);
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$a = ($x[ 2] + $x[ 1]) & 0xffffffff;
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$x[ 3] ^= ($a << 13) | ($a >> 19);
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$a = ($x[ 3] + $x[ 2]) & 0xffffffff;
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$x[ 0] ^= ($a << 18) | ($a >> 14);
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$a = ($x[ 5] + $x[ 4]) & 0xffffffff;
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$x[ 6] ^= ($a << 7) | ($a >> 25);
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$a = ($x[ 6] + $x[ 5]) & 0xffffffff;
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$x[ 7] ^= ($a << 9) | ($a >> 23);
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$a = ($x[ 7] + $x[ 6]) & 0xffffffff;
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$x[ 4] ^= ($a << 13) | ($a >> 19);
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$a = ($x[ 4] + $x[ 7]) & 0xffffffff;
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$x[ 5] ^= ($a << 18) | ($a >> 14);
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$a = ($x[10] + $x[ 9]) & 0xffffffff;
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$x[11] ^= ($a << 7) | ($a >> 25);
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$a = ($x[11] + $x[10]) & 0xffffffff;
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$x[ 8] ^= ($a << 9) | ($a >> 23);
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$a = ($x[ 8] + $x[11]) & 0xffffffff;
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$x[ 9] ^= ($a << 13) | ($a >> 19);
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$a = ($x[ 9] + $x[ 8]) & 0xffffffff;
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$x[10] ^= ($a << 18) | ($a >> 14);
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$a = ($x[15] + $x[14]) & 0xffffffff;
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$x[12] ^= ($a << 7) | ($a >> 25);
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$a = ($x[12] + $x[15]) & 0xffffffff;
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$x[13] ^= ($a << 9) | ($a >> 23);
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$a = ($x[13] + $x[12]) & 0xffffffff;
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$x[14] ^= ($a << 13) | ($a >> 19);
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$a = ($x[14] + $x[13]) & 0xffffffff;
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$x[15] ^= ($a << 18) | ($a >> 14);
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}
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for ($i = 0; $i < 16; $i++) {
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$b32[$i] = ($b32[$i] + $x[$i]) & 0xffffffff;
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}
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$result = '';
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for ($i = 0; $i < 16; $i++) {
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$result .= pack("V", $b32[$i]);
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}
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return $result;
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}
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/**
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* Integerify
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*
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* Integerify (B[0] ... B[2 * r - 1]) is defined as the result
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* of interpreting B[2 * r - 1] as a little-endian integer.
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* Each block B is a string of 64 bytes.
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*
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* @param string $b
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* @return integer
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* @see https://tools.ietf.org/html/draft-josefsson-scrypt-kdf-01#section-4
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*/
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protected static function integerify($b)
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{
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$v = 'v';
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if (PHP_INT_SIZE === 8) {
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$v = 'V';
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}
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list(,$n) = unpack($v, substr($b, -64));
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return $n;
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}
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/**
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* Convert hex string in a binary string
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*
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* @param string $hex
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* @return string
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*/
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protected static function hex2bin($hex)
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{
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if (version_compare(PHP_VERSION, '5.4') >= 0) {
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return hex2bin($hex);
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}
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$len = strlen($hex);
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$result = '';
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for ($i = 0; $i < $len; $i+=2) {
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$result .= chr(hexdec($hex[$i] . $hex[$i+1]));
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}
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return $result;
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}
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}
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/**
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* Zend Framework (http://framework.zend.com/)
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*
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* @link http://github.com/zendframework/zf2 for the canonical source repository
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* @copyright Copyright (c) 2005-2013 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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*/
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/**
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* PKCS #5 v2.0 standard RFC 2898
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*/
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class Pbkdf2
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{
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/**
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* Generate the new key
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*
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* @param string $hash The hash algorithm to be used by HMAC
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* @param string $password The source password/key
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* @param string $salt
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* @param integer $iterations The number of iterations
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* @param integer $length The output size
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* @throws Exception\InvalidArgumentException
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* @return string
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*/
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public static function calc($hash, $password, $salt, $iterations, $length)
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{
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if (!Hmac::isSupported($hash)) {
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throw new Exception\InvalidArgumentException("The hash algorithm $hash is not supported by " . __CLASS__);
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}
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$num = ceil($length / Hmac::getOutputSize($hash, Hmac::OUTPUT_BINARY));
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$result = '';
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for ($block = 1; $block <= $num; $block++) {
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$hmac = hash_hmac($hash, $salt . pack('N', $block), $password, Hmac::OUTPUT_BINARY);
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$mix = $hmac;
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for ($i = 1; $i < $iterations; $i++) {
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$hmac = hash_hmac($hash, $hmac, $password, Hmac::OUTPUT_BINARY);
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$mix ^= $hmac;
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}
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$result .= $mix;
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}
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return substr($result, 0, $length);
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}
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}
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/**
|
||||
* Zend Framework (http://framework.zend.com/)
|
||||
*
|
||||
* @link http://github.com/zendframework/zf2 for the canonical source repository
|
||||
* @copyright Copyright (c) 2005-2013 Zend Technologies USA Inc. (http://www.zend.com)
|
||||
* @license http://framework.zend.com/license/new-bsd New BSD License
|
||||
*/
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* PHP implementation of the RFC 2104 Hash based Message Authentication Code
|
||||
*/
|
||||
class Hmac
|
||||
{
|
||||
const OUTPUT_STRING = false;
|
||||
const OUTPUT_BINARY = true;
|
||||
|
||||
/**
|
||||
* Last algorithm supported
|
||||
*
|
||||
* @var string|null
|
||||
*/
|
||||
protected static $lastAlgorithmSupported;
|
||||
|
||||
/**
|
||||
* Performs a HMAC computation given relevant details such as Key, Hashing
|
||||
* algorithm, the data to compute MAC of, and an output format of String,
|
||||
* or Binary.
|
||||
*
|
||||
* @param string $key
|
||||
* @param string $hash
|
||||
* @param string $data
|
||||
* @param bool $output
|
||||
* @throws Exception\InvalidArgumentException
|
||||
* @return string
|
||||
*/
|
||||
public static function compute($key, $hash, $data, $output = self::OUTPUT_STRING)
|
||||
{
|
||||
|
||||
if (empty($key)) {
|
||||
throw new Exception\InvalidArgumentException('Provided key is null or empty');
|
||||
}
|
||||
|
||||
if (!$hash || ($hash !== static::$lastAlgorithmSupported && !static::isSupported($hash))) {
|
||||
throw new Exception\InvalidArgumentException(
|
||||
"Hash algorithm is not supported on this PHP installation; provided '{$hash}'"
|
||||
);
|
||||
}
|
||||
|
||||
return hash_hmac($hash, $data, $key, $output);
|
||||
}
|
||||
|
||||
/**
|
||||
* Get the output size according to the hash algorithm and the output format
|
||||
*
|
||||
* @param string $hash
|
||||
* @param bool $output
|
||||
* @return integer
|
||||
*/
|
||||
public static function getOutputSize($hash, $output = self::OUTPUT_STRING)
|
||||
{
|
||||
return strlen(static::compute('key', $hash, 'data', $output));
|
||||
}
|
||||
|
||||
/**
|
||||
* Get the supported algorithm
|
||||
*
|
||||
* @return array
|
||||
*/
|
||||
public static function getSupportedAlgorithms()
|
||||
{
|
||||
return hash_algos();
|
||||
}
|
||||
|
||||
/**
|
||||
* Is the hash algorithm supported?
|
||||
*
|
||||
* @param string $algorithm
|
||||
* @return bool
|
||||
*/
|
||||
public static function isSupported($algorithm)
|
||||
{
|
||||
if ($algorithm === static::$lastAlgorithmSupported) {
|
||||
return true;
|
||||
}
|
||||
|
||||
if (in_array(strtolower($algorithm), hash_algos(), true)) {
|
||||
static::$lastAlgorithmSupported = $algorithm;
|
||||
return true;
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
/**
|
||||
* Clear the cache of last algorithm supported
|
||||
*/
|
||||
public static function clearLastAlgorithmCache()
|
||||
{
|
||||
static::$lastAlgorithmSupported = null;
|
||||
}
|
||||
}
|
||||
function swapEndian($input){
|
||||
$output = "";
|
||||
for($i=0;$i< strlen($input);$i+=2){
|
||||
$output .= substr($input, -($i+2), 2);
|
||||
|
||||
|
||||
}
|
||||
return $output;
|
||||
|
||||
|
||||
}
|
||||
|
||||
|
||||
/*for($i=0;$i < 200;$i++){
|
||||
$value = Scrypt::calc($i, $i, 1024, 1, 1, 32);
|
||||
echo "scrypt ".$i." hash:". bin2hex($value)."<br/>";
|
||||
}*/
|
||||
/*
|
||||
$i = pack("H*", "01000000f615f7ce3b4fc6b8f61e8f89aedb1d0852507650533a9e3b10b9bbcc30639f279fcaa86746e1ef52d3edb3c4ad8259920d509bd073605c9bf1d59983752a6b06b817bb4ea78e011d012d59d4");
|
||||
|
||||
$value = Scrypt::calc($i, $i, 1024, 1, 1, 32);
|
||||
echo "scrypt ".$i." hash:". bin2hex($value)."<br/>";
|
||||
print_r( swapEndian(bin2hex($value)));
|
||||
*/
|
||||
|
||||
|
||||
?>
|
||||
Loading…
Reference in New Issue
Block a user