File "BLAKE2b.php"
Full path: /home/kosmetik/public_html/wp-includes/sodium_compat/src/Core/BLAKE2b.php
File
size: 13.26 B
MIME-type: text/x-php
Charset: utf-8
Download Open Edit Advanced Editor Back
<?php
if (class_exists('ParagonIE_Sodium_Core_BLAKE2b', false)) {
return;
}
abstract class ParagonIE_Sodium_Core_BLAKE2b extends ParagonIE_Sodium_Core_Util
{
protected static $iv;
protected static $sigma = array(array(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15), array(14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3), array(11, 8, 12, 0, 5, 2, 15, 13, 10, 14, 3, 6, 7, 1, 9, 4), array(7, 9, 3, 1, 13, 12, 11, 14, 2, 6, 5, 10, 4, 0, 15, 8), array(9, 0, 5, 7, 2, 4, 10, 15, 14, 1, 11, 12, 6, 8, 3, 13), array(2, 12, 6, 10, 0, 11, 8, 3, 4, 13, 7, 5, 15, 14, 1, 9), array(12, 5, 1, 15, 14, 13, 4, 10, 0, 7, 6, 3, 9, 2, 8, 11), array(13, 11, 7, 14, 12, 1, 3, 9, 5, 0, 15, 4, 8, 6, 2, 10), array(6, 15, 14, 9, 11, 3, 0, 8, 12, 2, 13, 7, 1, 4, 10, 5), array(10, 2, 8, 4, 7, 6, 1, 5, 15, 11, 9, 14, 3, 12, 13, 0), array(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15), array(14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3));
const BLOCKBYTES = 128;
const OUTBYTES = 64;
const KEYBYTES = 64;
public static function new64($high, $low)
{
$i64 = new SplFixedArray(2);
$i64[0] = $high & 0xffffffff;
$i64[1] = $low & 0xffffffff;
return $i64;
}
protected static function to64($num)
{
list($hi, $lo) = self::numericTo64BitInteger($num);
return self::new64($hi, $lo);
}
protected static function add64($x, $y)
{
$l = $x[1] + $y[1] & 0xffffffff;
return self::new64((int) ($x[0] + $y[0] + ($l < $x[1] ? 1 : 0)), (int) $l);
}
protected static function add364($x, $y, $z)
{
return self::add64($x, self::add64($y, $z));
}
protected static function xor64(SplFixedArray $x, SplFixedArray $y)
{
if (!is_numeric($x[0])) {
throw new SodiumException('x[0] is not an integer');
}
if (!is_numeric($x[1])) {
throw new SodiumException('x[1] is not an integer');
}
if (!is_numeric($y[0])) {
throw new SodiumException('y[0] is not an integer');
}
if (!is_numeric($y[1])) {
throw new SodiumException('y[1] is not an integer');
}
return self::new64((int) (($x[0] ^ $y[0]) & 0xffffffff), (int) (($x[1] ^ $y[1]) & 0xffffffff));
}
public static function rotr64($x, $c)
{
if ($c >= 64) {
$c %= 64;
}
if ($c >= 32) {
$tmp = $x[0];
$x[0] = $x[1];
$x[1] = $tmp;
$c -= 32;
}
if ($c === 0) {
return $x;
}
$l0 = 0;
$c = 64 - $c;
if ($c < 32) {
$h0 = (int) $x[0] << $c | ((int) $x[1] & (1 << $c) - 1 << 32 - $c) >> 32 - $c;
$l0 = (int) $x[1] << $c;
} else {
$h0 = (int) $x[1] << $c - 32;
}
$h1 = 0;
$c1 = 64 - $c;
if ($c1 < 32) {
$h1 = (int) $x[0] >> $c1;
$l1 = (int) $x[1] >> $c1 | ((int) $x[0] & (1 << $c1) - 1) << 32 - $c1;
} else {
$l1 = (int) $x[0] >> $c1 - 32;
}
return self::new64($h0 | $h1, $l0 | $l1);
}
protected static function flatten64($x)
{
return (int) ($x[0] * 4294967296 + $x[1]);
}
protected static function load64(SplFixedArray $x, $i)
{
$l = (int) $x[$i] | (int) $x[$i + 1] << 8 | (int) $x[$i + 2] << 16 | (int) $x[$i + 3] << 24;
$h = (int) $x[$i + 4] | (int) $x[$i + 5] << 8 | (int) $x[$i + 6] << 16 | (int) $x[$i + 7] << 24;
return self::new64($h, $l);
}
protected static function store64(SplFixedArray $x, $i, SplFixedArray $u)
{
$maxLength = $x->getSize() - 1;
for ($j = 0; $j < 8; ++$j) {
$uIdx = (7 - $j & 4) >> 2;
$x[$i] = (int) $u[$uIdx] & 0xff;
if (++$i > $maxLength) {
return;
}
$u[$uIdx] >>= 8;
}
}
public static function pseudoConstructor()
{
static $called = false;
if ($called) {
return;
}
self::$iv = new SplFixedArray(8);
self::$iv[0] = self::new64(0x6a09e667, 0xf3bcc908);
self::$iv[1] = self::new64(0xbb67ae85, 0x84caa73b);
self::$iv[2] = self::new64(0x3c6ef372, 0xfe94f82b);
self::$iv[3] = self::new64(0xa54ff53a, 0x5f1d36f1);
self::$iv[4] = self::new64(0x510e527f, 0xade682d1);
self::$iv[5] = self::new64(0x9b05688c, 0x2b3e6c1f);
self::$iv[6] = self::new64(0x1f83d9ab, 0xfb41bd6b);
self::$iv[7] = self::new64(0x5be0cd19, 0x137e2179);
$called = true;
}
protected static function context()
{
$ctx = new SplFixedArray(6);
$ctx[0] = new SplFixedArray(8);
$ctx[1] = new SplFixedArray(2);
$ctx[2] = new SplFixedArray(2);
$ctx[3] = new SplFixedArray(256);
$ctx[4] = 0;
$ctx[5] = 0;
for ($i = 8; $i--;) {
$ctx[0][$i] = self::$iv[$i];
}
for ($i = 256; $i--;) {
$ctx[3][$i] = 0;
}
$zero = self::new64(0, 0);
$ctx[1][0] = $zero;
$ctx[1][1] = $zero;
$ctx[2][0] = $zero;
$ctx[2][1] = $zero;
return $ctx;
}
protected static function compress(SplFixedArray $ctx, SplFixedArray $buf)
{
$m = new SplFixedArray(16);
$v = new SplFixedArray(16);
for ($i = 16; $i--;) {
$m[$i] = self::load64($buf, $i << 3);
}
for ($i = 8; $i--;) {
$v[$i] = $ctx[0][$i];
}
$v[8] = self::$iv[0];
$v[9] = self::$iv[1];
$v[10] = self::$iv[2];
$v[11] = self::$iv[3];
$v[12] = self::xor64($ctx[1][0], self::$iv[4]);
$v[13] = self::xor64($ctx[1][1], self::$iv[5]);
$v[14] = self::xor64($ctx[2][0], self::$iv[6]);
$v[15] = self::xor64($ctx[2][1], self::$iv[7]);
for ($r = 0; $r < 12; ++$r) {
$v = self::G($r, 0, 0, 4, 8, 12, $v, $m);
$v = self::G($r, 1, 1, 5, 9, 13, $v, $m);
$v = self::G($r, 2, 2, 6, 10, 14, $v, $m);
$v = self::G($r, 3, 3, 7, 11, 15, $v, $m);
$v = self::G($r, 4, 0, 5, 10, 15, $v, $m);
$v = self::G($r, 5, 1, 6, 11, 12, $v, $m);
$v = self::G($r, 6, 2, 7, 8, 13, $v, $m);
$v = self::G($r, 7, 3, 4, 9, 14, $v, $m);
}
for ($i = 8; $i--;) {
$ctx[0][$i] = self::xor64($ctx[0][$i], self::xor64($v[$i], $v[$i + 8]));
}
}
public static function G($r, $i, $a, $b, $c, $d, SplFixedArray $v, SplFixedArray $m)
{
$v[$a] = self::add364($v[$a], $v[$b], $m[self::$sigma[$r][$i << 1]]);
$v[$d] = self::rotr64(self::xor64($v[$d], $v[$a]), 32);
$v[$c] = self::add64($v[$c], $v[$d]);
$v[$b] = self::rotr64(self::xor64($v[$b], $v[$c]), 24);
$v[$a] = self::add364($v[$a], $v[$b], $m[self::$sigma[$r][($i << 1) + 1]]);
$v[$d] = self::rotr64(self::xor64($v[$d], $v[$a]), 16);
$v[$c] = self::add64($v[$c], $v[$d]);
$v[$b] = self::rotr64(self::xor64($v[$b], $v[$c]), 63);
return $v;
}
public static function increment_counter($ctx, $inc)
{
if ($inc < 0) {
throw new SodiumException('Increasing by a negative number makes no sense.');
}
$t = self::to64($inc);
$ctx[1][0] = self::add64($ctx[1][0], $t);
if (self::flatten64($ctx[1][0]) < $inc) {
$ctx[1][1] = self::add64($ctx[1][1], self::to64(1));
}
}
public static function update(SplFixedArray $ctx, SplFixedArray $p, $plen)
{
self::pseudoConstructor();
$offset = 0;
while ($plen > 0) {
$left = $ctx[4];
$fill = 256 - $left;
if ($plen > $fill) {
for ($i = $fill; $i--;) {
$ctx[3][$i + $left] = $p[$i + $offset];
}
$ctx[4] += $fill;
self::increment_counter($ctx, 128);
self::compress($ctx, $ctx[3]);
for ($i = 128; $i--;) {
$ctx[3][$i] = $ctx[3][$i + 128];
}
$ctx[4] -= 128;
$offset += $fill;
$plen -= $fill;
} else {
for ($i = $plen; $i--;) {
$ctx[3][$i + $left] = $p[$i + $offset];
}
$ctx[4] += $plen;
$offset += $plen;
$plen -= $plen;
}
}
}
public static function finish(SplFixedArray $ctx, SplFixedArray $out)
{
self::pseudoConstructor();
if ($ctx[4] > 128) {
self::increment_counter($ctx, 128);
self::compress($ctx, $ctx[3]);
$ctx[4] -= 128;
if ($ctx[4] > 128) {
throw new SodiumException('Failed to assert that buflen <= 128 bytes');
}
for ($i = $ctx[4]; $i--;) {
$ctx[3][$i] = $ctx[3][$i + 128];
}
}
self::increment_counter($ctx, $ctx[4]);
$ctx[2][0] = self::new64(0xffffffff, 0xffffffff);
for ($i = 256 - $ctx[4]; $i--;) {
$ctx[3][$i + $ctx[4]] = 0;
}
self::compress($ctx, $ctx[3]);
$i = (int) (($out->getSize() - 1) / 8);
for (; $i >= 0; --$i) {
self::store64($out, $i << 3, $ctx[0][$i]);
}
return $out;
}
public static function init($key = null, $outlen = 64, $salt = null, $personal = null)
{
self::pseudoConstructor();
$klen = 0;
if ($key !== null) {
if (count($key) > 64) {
throw new SodiumException('Invalid key size');
}
$klen = count($key);
}
if ($outlen > 64) {
throw new SodiumException('Invalid output size');
}
$ctx = self::context();
$p = new SplFixedArray(64);
for ($i = 64; --$i;) {
$p[$i] = 0;
}
$p[0] = $outlen;
$p[1] = $klen;
$p[2] = 1;
$p[3] = 1;
if ($salt instanceof SplFixedArray) {
for ($i = 0; $i < 16; ++$i) {
$p[32 + $i] = (int) $salt[$i];
}
}
if ($personal instanceof SplFixedArray) {
for ($i = 0; $i < 16; ++$i) {
$p[48 + $i] = (int) $personal[$i];
}
}
$ctx[0][0] = self::xor64($ctx[0][0], self::load64($p, 0));
if ($salt instanceof SplFixedArray || $personal instanceof SplFixedArray) {
for ($i = 1; $i < 8; ++$i) {
$ctx[0][$i] = self::xor64($ctx[0][$i], self::load64($p, $i << 3));
}
}
if ($klen > 0 && $key instanceof SplFixedArray) {
$block = new SplFixedArray(128);
for ($i = 128; $i--;) {
$block[$i] = 0;
}
for ($i = $klen; $i--;) {
$block[$i] = $key[$i];
}
self::update($ctx, $block, 128);
$ctx[4] = 128;
}
return $ctx;
}
public static function stringToSplFixedArray($str = '')
{
$values = unpack('C*', $str);
return SplFixedArray::fromArray(array_values($values));
}
public static function SplFixedArrayToString(SplFixedArray $a)
{
$arr = $a->toArray();
$c = $a->count();
array_unshift($arr, str_repeat('C', $c));
return (string) call_user_func_array('pack', $arr);
}
public static function contextToString(SplFixedArray $ctx)
{
$str = '';
$ctxA = $ctx[0]->toArray();
for ($i = 0; $i < 8; ++$i) {
$str .= self::store32_le($ctxA[$i][1]);
$str .= self::store32_le($ctxA[$i][0]);
}
for ($i = 1; $i < 3; ++$i) {
$ctxA = $ctx[$i]->toArray();
$str .= self::store32_le($ctxA[0][1]);
$str .= self::store32_le($ctxA[0][0]);
$str .= self::store32_le($ctxA[1][1]);
$str .= self::store32_le($ctxA[1][0]);
}
$str .= self::SplFixedArrayToString($ctx[3]);
$ctx4 = (int) $ctx[4];
$str .= implode('', array(self::intToChr($ctx4 & 0xff), self::intToChr($ctx4 >> 8 & 0xff), self::intToChr($ctx4 >> 16 & 0xff), self::intToChr($ctx4 >> 24 & 0xff), self::intToChr($ctx4 >> 32 & 0xff), self::intToChr($ctx4 >> 40 & 0xff), self::intToChr($ctx4 >> 48 & 0xff), self::intToChr($ctx4 >> 56 & 0xff)));
return $str . self::intToChr($ctx[5]) . str_repeat("\0", 23);
}
public static function stringToContext($string)
{
$ctx = self::context();
for ($i = 0; $i < 8; ++$i) {
$ctx[0][$i] = SplFixedArray::fromArray(array(self::load_4(self::substr($string, ($i << 3) + 4, 4)), self::load_4(self::substr($string, ($i << 3) + 0, 4))));
}
for ($i = 1; $i < 3; ++$i) {
$ctx[$i][1] = SplFixedArray::fromArray(array(self::load_4(self::substr($string, 76 + ($i - 1 << 4), 4)), self::load_4(self::substr($string, 72 + ($i - 1 << 4), 4))));
$ctx[$i][0] = SplFixedArray::fromArray(array(self::load_4(self::substr($string, 68 + ($i - 1 << 4), 4)), self::load_4(self::substr($string, 64 + ($i - 1 << 4), 4))));
}
$ctx[3] = self::stringToSplFixedArray(self::substr($string, 96, 256));
$int = 0;
for ($i = 0; $i < 8; ++$i) {
$int |= self::chrToInt($string[352 + $i]) << ($i << 3);
}
$ctx[4] = $int;
return $ctx;
}
}