diff options
Diffstat (limited to 'vendor/paragonie/constant_time_encoding/src/Hex.php')
| -rw-r--r-- | vendor/paragonie/constant_time_encoding/src/Hex.php | 159 |
1 files changed, 0 insertions, 159 deletions
diff --git a/vendor/paragonie/constant_time_encoding/src/Hex.php b/vendor/paragonie/constant_time_encoding/src/Hex.php deleted file mode 100644 index b1b05a098..000000000 --- a/vendor/paragonie/constant_time_encoding/src/Hex.php +++ /dev/null @@ -1,159 +0,0 @@ -<?php -declare(strict_types=1); -namespace ParagonIE\ConstantTime; - -/** - * Copyright (c) 2016 - 2018 Paragon Initiative Enterprises. - * Copyright (c) 2014 Steve "Sc00bz" Thomas (steve at tobtu dot com) - * - * 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. - */ - -/** - * Class Hex - * @package ParagonIE\ConstantTime - */ -abstract class Hex implements EncoderInterface -{ - /** - * Convert a binary string into a hexadecimal string without cache-timing - * leaks - * - * @param string $binString (raw binary) - * @return string - * @throws \TypeError - */ - public static function encode(string $binString): string - { - /** @var string $hex */ - $hex = ''; - $len = Binary::safeStrlen($binString); - for ($i = 0; $i < $len; ++$i) { - /** @var array<int, int> $chunk */ - $chunk = \unpack('C', Binary::safeSubstr($binString, $i, 1)); - /** @var int $c */ - $c = $chunk[1] & 0xf; - /** @var int $b */ - $b = $chunk[1] >> 4; - - $hex .= pack( - 'CC', - (87 + $b + ((($b - 10) >> 8) & ~38)), - (87 + $c + ((($c - 10) >> 8) & ~38)) - ); - } - return $hex; - } - - /** - * Convert a binary string into a hexadecimal string without cache-timing - * leaks, returning uppercase letters (as per RFC 4648) - * - * @param string $binString (raw binary) - * @return string - * @throws \TypeError - */ - public static function encodeUpper(string $binString): string - { - /** @var string $hex */ - $hex = ''; - /** @var int $len */ - $len = Binary::safeStrlen($binString); - - for ($i = 0; $i < $len; ++$i) { - /** @var array<int, int> $chunk */ - $chunk = \unpack('C', Binary::safeSubstr($binString, $i, 2)); - /** @var int $c */ - $c = $chunk[1] & 0xf; - /** @var int $b */ - $b = $chunk[1] >> 4; - - $hex .= pack( - 'CC', - (55 + $b + ((($b - 10) >> 8) & ~6)), - (55 + $c + ((($c - 10) >> 8) & ~6)) - ); - } - return $hex; - } - - /** - * Convert a hexadecimal string into a binary string without cache-timing - * leaks - * - * @param string $encodedString - * @param bool $strictPadding - * @return string (raw binary) - * @throws \RangeException - */ - public static function decode(string $encodedString, bool $strictPadding = false): string - { - /** @var int $hex_pos */ - $hex_pos = 0; - /** @var string $bin */ - $bin = ''; - /** @var int $c_acc */ - $c_acc = 0; - /** @var int $hex_len */ - $hex_len = Binary::safeStrlen($encodedString); - /** @var int $state */ - $state = 0; - if (($hex_len & 1) !== 0) { - if ($strictPadding) { - throw new \RangeException( - 'Expected an even number of hexadecimal characters' - ); - } else { - $encodedString = '0' . $encodedString; - ++$hex_len; - } - } - - /** @var array<int, int> $chunk */ - $chunk = \unpack('C*', $encodedString); - while ($hex_pos < $hex_len) { - ++$hex_pos; - /** @var int $c */ - $c = $chunk[$hex_pos]; - /** @var int $c_num */ - $c_num = $c ^ 48; - /** @var int $c_num0 */ - $c_num0 = ($c_num - 10) >> 8; - /** @var int $c_alpha */ - $c_alpha = ($c & ~32) - 55; - /** @var int $c_alpha0 */ - $c_alpha0 = (($c_alpha - 10) ^ ($c_alpha - 16)) >> 8; - - if (($c_num0 | $c_alpha0) === 0) { - throw new \RangeException( - 'Expected hexadecimal character' - ); - } - /** @var int $c_val */ - $c_val = ($c_num0 & $c_num) | ($c_alpha & $c_alpha0); - if ($state === 0) { - $c_acc = $c_val * 16; - } else { - $bin .= \pack('C', $c_acc | $c_val); - } - $state ^= 1; - } - return $bin; - } -} |