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<?php |
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/** |
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* Copyright (c) 2020 UMI |
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* |
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* Permission is hereby granted, free of charge, to any person obtaining a copy |
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* of this software and associated documentation files (the "Software"), to deal |
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* in the Software without restriction, including without limitation the rights |
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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* copies of the Software, and to permit persons to whom the Software is |
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* furnished to do so, subject to the following conditions: |
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* |
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* The above copyright notice and this permission notice shall be included in all |
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* copies or substantial portions of the Software. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
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* SOFTWARE. |
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*/ |
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declare(strict_types=1); |
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namespace UmiTop\UmiCore\Util\Ed25519; |
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/** |
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* Class AbstractBase |
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* Implementation derived from TweetNaCl version 20140427. |
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* @see http://tweetnacl.cr.yp.to/ |
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* @package UmiTop\UmiCore\Util\Ed25519 |
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* @SuppressWarnings(PHPMD.ShortMethodName) |
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* @SuppressWarnings(PHPMD.ShortVariable) |
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*/ |
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abstract class AbstractBase |
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{ |
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/** @var int */ |
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public const PUBLIC_KEY_BYTES = 32; |
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/** @var int */ |
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public const SECRET_KEY_BYTES = 64; |
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/** @var int */ |
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public const SEED_BYTES = 32; |
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/** @var array<int, int> */ |
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protected $D2; |
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/** @var array<int, int> */ |
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protected $D; |
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/** @var array<int, int> */ |
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protected $gf0; |
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/** @var array<int, int> */ |
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protected $gf1; |
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/** @var array<int, int> */ |
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protected $I; |
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/** @var array<int, int> */ |
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protected $L; |
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/** @var array<int, int> */ |
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protected $X; |
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/** @var array<int, int> */ |
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protected $Y; |
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/** |
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* Ed25519 constructor. |
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*/ |
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12 |
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public function __construct() |
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{ |
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12 |
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$this->D2 = [ |
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0xf159, 0x26b2, 0x9b94, 0xebd6, 0xb156, 0x8283, 0x149a, 0x00e0, |
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0xd130, 0xeef3, 0x80f2, 0x198e, 0xfce7, 0x56df, 0xd9dc, 0x2406 |
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]; |
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$this->D = [ |
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0x78a3, 0x1359, 0x4dca, 0x75eb, 0xd8ab, 0x4141, 0x0a4d, 0x0070, |
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0xe898, 0x7779, 0x4079, 0x8cc7, 0xfe73, 0x2b6f, 0x6cee, 0x5203 |
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]; |
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$this->gf0 = array_fill(0, 16, 0); |
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$this->gf1 = [1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]; |
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$this->I = [ |
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0xa0b0, 0x4a0e, 0x1b27, 0xc4ee, 0xe478, 0xad2f, 0x1806, 0x2f43, |
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0xd7a7, 0x3dfb, 0x0099, 0x2b4d, 0xdf0b, 0x4fc1, 0x2480, 0x2b83 |
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]; |
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$this->L = [ |
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0xed, 0xd3, 0xf5, 0x5c, 0x1a, 0x63, 0x12, 0x58, 0xd6, 0x9c, 0xf7, 0xa2, |
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0xde, 0xf9, 0xde, 0x14, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x10 |
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]; |
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$this->X = [ |
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0xd51a, 0x8f25, 0x2d60, 0xc956, 0xa7b2, 0x9525, 0xc760, 0x692c, |
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0xdc5c, 0xfdd6, 0xe231, 0xc0a4, 0x53fe, 0xcd6e, 0x36d3, 0x2169 |
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]; |
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$this->Y = [ |
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0x6658, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, |
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0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666 |
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]; |
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} |
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/** |
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* @param array<int, int> $o |
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* @return void |
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*/ |
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protected function car25519(array &$o): void |
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{ |
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for ($i = 0; $i < 16; $i++) { |
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$o[$i] += (1 << 16); |
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$c = $o[$i] >> 16; |
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$o[($i + 1) * (int)($i < 15)] += $c - 1 + 37 * ($c - 1) * (int)($i === 15); |
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$o[$i] -= $c << 16; |
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} |
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} |
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/** |
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* @param string $x |
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* @param string $y |
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* @return bool |
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*/ |
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6 |
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protected function cryptoVerify32(string $x, string $y): bool |
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{ |
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$d = 0; |
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for ($i = 0; $i < 32; $i++) { |
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$d |= ord($x[$i]) ^ ord($y[$i]); |
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} |
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return (1 & (($d - 1) >> 8)) === 1; |
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} |
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/** |
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* @param array<int, int> $o |
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* @param array<int, int> $a |
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* @param array<int, int> $b |
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* @return void |
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*/ |
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protected function fnA(array &$o, array $a, array $b): void |
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{ |
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for ($i = 0; $i < 16; $i++) { |
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$o[$i] = $a[$i] + $b[$i]; |
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} |
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} |
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/** |
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* @param array<int, int> $o |
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* @param array<int, int> $a |
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* @param array<int, int> $b |
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* @return void |
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*/ |
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protected function fnM(array &$o, array $a, array $b): void |
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{ |
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$t = array_fill(0, 31, 0); |
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for ($i = 0; $i < 16; $i++) { |
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for ($j = 0; $j < 16; $j++) { |
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$t[$i + $j] += $a[$i] * $b[$j]; |
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} |
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} |
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for ($i = 0; $i < 15; $i++) { |
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$t[$i] += 38 * $t[$i + 16]; |
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} |
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for ($i = 0; $i < 16; $i++) { |
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$o[$i] = $t[$i]; |
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} |
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$this->car25519($o); |
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$this->car25519($o); |
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} |
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/** |
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* @param array<int, int> $o |
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* @param array<int, int> $a |
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* @param array<int, int> $b |
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* @return void |
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*/ |
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protected function fnZ(array &$o, array $a, array $b): void |
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{ |
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for ($i = 0; $i < 16; $i++) { |
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$o[$i] = $a[$i] - $b[$i]; |
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} |
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} |
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} |
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umi-top /
umi-core-php
