enmi-conf.org: comparison wp/wp-includes/sodium

equal deleted inserted replaced

-:c7c34916027a
+:177826044cd9
+<?php
+if (class_exists('ParagonIE_Sodium_Core_Salsa20', false)) {
+return;
+}
+/**
+* Class ParagonIE_Sodium_Core_Salsa20
+*/
+abstract class ParagonIE_Sodium_Core_Salsa20 extends ParagonIE_Sodium_Core_Util
+{
+const ROUNDS = 20;
+/**
+* Calculate an salsa20 hash of a single block
+*
+* @internal You should not use this directly from another application
+*
+* @param string $in
+* @param string $k
+* @param string|null $c
+* @return string
+* @throws TypeError
+*/
+public static function core_salsa20($in, $k, $c = null)
+{
+if (self::strlen($k) < 32) {
+throw new RangeException('Key must be 32 bytes long');
+}
+if ($c === null) {
+$j0  = $x0  = 0x61707865;
+$j5  = $x5  = 0x3320646e;
+$j10 = $x10 = 0x79622d32;
+$j15 = $x15 = 0x6b206574;
+} else {
+$j0  = $x0  = self::load_4(self::substr($c, 0, 4));
+$j5  = $x5  = self::load_4(self::substr($c, 4, 4));
+$j10 = $x10 = self::load_4(self::substr($c, 8, 4));
+$j15 = $x15 = self::load_4(self::substr($c, 12, 4));
+}
+$j1  = $x1  = self::load_4(self::substr($k, 0, 4));
+$j2  = $x2  = self::load_4(self::substr($k, 4, 4));
+$j3  = $x3  = self::load_4(self::substr($k, 8, 4));
+$j4  = $x4  = self::load_4(self::substr($k, 12, 4));
+$j6  = $x6  = self::load_4(self::substr($in, 0, 4));
+$j7  = $x7  = self::load_4(self::substr($in, 4, 4));
+$j8  = $x8  = self::load_4(self::substr($in, 8, 4));
+$j9  = $x9  = self::load_4(self::substr($in, 12, 4));
+$j11 = $x11 = self::load_4(self::substr($k, 16, 4));
+$j12 = $x12 = self::load_4(self::substr($k, 20, 4));
+$j13 = $x13 = self::load_4(self::substr($k, 24, 4));
+$j14 = $x14 = self::load_4(self::substr($k, 28, 4));
+for ($i = self::ROUNDS; $i > 0; $i -= 2) {
+$x4 ^= self::rotate($x0 + $x12, 7);
+$x8 ^= self::rotate($x4 + $x0, 9);
+$x12 ^= self::rotate($x8 + $x4, 13);
+$x0 ^= self::rotate($x12 + $x8, 18);
+$x9 ^= self::rotate($x5 + $x1, 7);
+$x13 ^= self::rotate($x9 + $x5, 9);
+$x1 ^= self::rotate($x13 + $x9, 13);
+$x5 ^= self::rotate($x1 + $x13, 18);
+$x14 ^= self::rotate($x10 + $x6, 7);
+$x2 ^= self::rotate($x14 + $x10, 9);
+$x6 ^= self::rotate($x2 + $x14, 13);
+$x10 ^= self::rotate($x6 + $x2, 18);
+$x3 ^= self::rotate($x15 + $x11, 7);
+$x7 ^= self::rotate($x3 + $x15, 9);
+$x11 ^= self::rotate($x7 + $x3, 13);
+$x15 ^= self::rotate($x11 + $x7, 18);
+$x1 ^= self::rotate($x0 + $x3, 7);
+$x2 ^= self::rotate($x1 + $x0, 9);
+$x3 ^= self::rotate($x2 + $x1, 13);
+$x0 ^= self::rotate($x3 + $x2, 18);
+$x6 ^= self::rotate($x5 + $x4, 7);
+$x7 ^= self::rotate($x6 + $x5, 9);
+$x4 ^= self::rotate($x7 + $x6, 13);
+$x5 ^= self::rotate($x4 + $x7, 18);
+$x11 ^= self::rotate($x10 + $x9, 7);
+$x8 ^= self::rotate($x11 + $x10, 9);
+$x9 ^= self::rotate($x8 + $x11, 13);
+$x10 ^= self::rotate($x9 + $x8, 18);
+$x12 ^= self::rotate($x15 + $x14, 7);
+$x13 ^= self::rotate($x12 + $x15, 9);
+$x14 ^= self::rotate($x13 + $x12, 13);
+$x15 ^= self::rotate($x14 + $x13, 18);
+}
+$x0  += $j0;
+$x1  += $j1;
+$x2  += $j2;
+$x3  += $j3;
+$x4  += $j4;
+$x5  += $j5;
+$x6  += $j6;
+$x7  += $j7;
+$x8  += $j8;
+$x9  += $j9;
+$x10 += $j10;
+$x11 += $j11;
+$x12 += $j12;
+$x13 += $j13;
+$x14 += $j14;
+$x15 += $j15;
+return self::store32_le($x0) .
+self::store32_le($x1) .
+self::store32_le($x2) .
+self::store32_le($x3) .
+self::store32_le($x4) .
+self::store32_le($x5) .
+self::store32_le($x6) .
+self::store32_le($x7) .
+self::store32_le($x8) .
+self::store32_le($x9) .
+self::store32_le($x10) .
+self::store32_le($x11) .
+self::store32_le($x12) .
+self::store32_le($x13) .
+self::store32_le($x14) .
+self::store32_le($x15);
+}
+/**
+* @internal You should not use this directly from another application
+*
+* @param int $len
+* @param string $nonce
+* @param string $key
+* @return string
+* @throws SodiumException
+* @throws TypeError
+*/
+public static function salsa20($len, $nonce, $key)
+{
+if (self::strlen($key) !== 32) {
+throw new RangeException('Key must be 32 bytes long');
+}
+$kcopy = '' . $key;
+$in = self::substr($nonce, 0, 8) . str_repeat("\0", 8);
+$c = '';
+while ($len >= 64) {
+$c .= self::core_salsa20($in, $kcopy, null);
+$u = 1;
+// Internal counter.
+for ($i = 8; $i < 16; ++$i) {
+$u += self::chrToInt($in[$i]);
+$in[$i] = self::intToChr($u & 0xff);
+$u >>= 8;
+}
+$len -= 64;
+}
+if ($len > 0) {
+$c .= self::substr(
+self::core_salsa20($in, $kcopy, null),
+0,
+$len
+);
+}
+try {
+ParagonIE_Sodium_Compat::memzero($kcopy);
+} catch (SodiumException $ex) {
+$kcopy = null;
+}
+return $c;
+}
+/**
+* @internal You should not use this directly from another application
+*
+* @param string $m
+* @param string $n
+* @param int $ic
+* @param string $k
+* @return string
+* @throws SodiumException
+* @throws TypeError
+*/
+public static function salsa20_xor_ic($m, $n, $ic, $k)
+{
+$mlen = self::strlen($m);
+if ($mlen < 1) {
+return '';
+}
+$kcopy = self::substr($k, 0, 32);
+$in = self::substr($n, 0, 8);
+// Initialize the counter
+$in .= ParagonIE_Sodium_Core_Util::store64_le($ic);
+$c = '';
+while ($mlen >= 64) {
+$block = self::core_salsa20($in, $kcopy, null);
+$c .= self::xorStrings(
+self::substr($m, 0, 64),
+self::substr($block, 0, 64)
+);
+$u = 1;
+for ($i = 8; $i < 16; ++$i) {
+$u += self::chrToInt($in[$i]);
+$in[$i] = self::intToChr($u & 0xff);
+$u >>= 8;
+}
+$mlen -= 64;
+$m = self::substr($m, 64);
+}
+if ($mlen) {
+$block = self::core_salsa20($in, $kcopy, null);
+$c .= self::xorStrings(
+self::substr($m, 0, $mlen),
+self::substr($block, 0, $mlen)
+);
+}
+try {
+ParagonIE_Sodium_Compat::memzero($block);
+ParagonIE_Sodium_Compat::memzero($kcopy);
+} catch (SodiumException $ex) {
+$block = null;
+$kcopy = null;
+}
+return $c;
+}
+/**
+* @internal You should not use this directly from another application
+*
+* @param string $message
+* @param string $nonce
+* @param string $key
+* @return string
+* @throws SodiumException
+* @throws TypeError
+*/
+public static function salsa20_xor($message, $nonce, $key)
+{
+return self::xorStrings(
+$message,
+self::salsa20(
+self::strlen($message),
+$nonce,
+$key
+)
+);
+}
+/**
+* @internal You should not use this directly from another application
+*
+* @param int $u
+* @param int $c
+* @return int
+*/
+public static function rotate($u, $c)
+{
+$u &= 0xffffffff;
+$c %= 32;
+return (int) (0xffffffff & (
+($u << $c)
+|
+($u >> (32 - $c))
+)
+);
+}
+}