Файловый менеджер

Файловый менеджер - Редактировать - /home/kckglobal/public_html/portal/vendor/paragonie/sodium_compat/src/Core/X25519.php

Назад
<?php declare(strict_types=1); if (class_exists('ParagonIE_Sodium_Core_X25519', false)) { return; } /** * Class ParagonIE_Sodium_Core_X25519 / abstract class ParagonIE_Sodium_Core_X25519 extends ParagonIE_Sodium_Core_Curve25519 { /* * Alters the objects passed to this method in place. * * @internal You should not use this directly from another application * * @param ParagonIE_Sodium_Core_Curve25519_Fe $f * @param ParagonIE_Sodium_Core_Curve25519_Fe $g * @param int $b * @return void / public static function fe_cswap( ParagonIE_Sodium_Core_Curve25519_Fe $f, ParagonIE_Sodium_Core_Curve25519_Fe $g, int $b = 0 ): void { $b = -$b; $x0 = ($f[0] ^ $g[0]) & $b; $x1 = ($f[1] ^ $g[1]) & $b; $x2 = ($f[2] ^ $g[2]) & $b; $x3 = ($f[3] ^ $g[3]) & $b; $x4 = ($f[4] ^ $g[4]) & $b; $x5 = ($f[5] ^ $g[5]) & $b; $x6 = ($f[6] ^ $g[6]) & $b; $x7 = ($f[7] ^ $g[7]) & $b; $x8 = ($f[8] ^ $g[8]) & $b; $x9 = ($f[9] ^ $g[9]) & $b; $f[0] ^= $x0; $f[1] ^= $x1; $f[2] ^= $x2; $f[3] ^= $x3; $f[4] ^= $x4; $f[5] ^= $x5; $f[6] ^= $x6; $f[7] ^= $x7; $f[8] ^= $x8; $f[9] ^= $x9; $g[0] ^= $x0; $g[1] ^= $x1; $g[2] ^= $x2; $g[3] ^= $x3; $g[4] ^= $x4; $g[5] ^= $x5; $g[6] ^= $x6; $g[7] ^= $x7; $g[8] ^= $x8; $g[9] ^= $x9; } /* * @internal You should not use this directly from another application * * @param ParagonIE_Sodium_Core_Curve25519_Fe $f * @return ParagonIE_Sodium_Core_Curve25519_Fe / public static function fe_mul121666(ParagonIE_Sodium_Core_Curve25519_Fe $f): ParagonIE_Sodium_Core_Curve25519_Fe { $h = array( self::mul($f[0], 121666, 17), self::mul($f[1], 121666, 17), self::mul($f[2], 121666, 17), self::mul($f[3], 121666, 17), self::mul($f[4], 121666, 17), self::mul($f[5], 121666, 17), self::mul($f[6], 121666, 17), self::mul($f[7], 121666, 17), self::mul($f[8], 121666, 17), self::mul($f[9], 121666, 17) ); $carry9 = ($h[9] + (1 << 24)) >> 25; $h[0] += self::mul($carry9, 19, 5); $h[9] -= $carry9 << 25; $carry1 = ($h[1] + (1 << 24)) >> 25; $h[2] += $carry1; $h[1] -= $carry1 << 25; $carry3 = ($h[3] + (1 << 24)) >> 25; $h[4] += $carry3; $h[3] -= $carry3 << 25; $carry5 = ($h[5] + (1 << 24)) >> 25; $h[6] += $carry5; $h[5] -= $carry5 << 25; $carry7 = ($h[7] + (1 << 24)) >> 25; $h[8] += $carry7; $h[7] -= $carry7 << 25; $carry0 = ($h[0] + (1 << 25)) >> 26; $h[1] += $carry0; $h[0] -= $carry0 << 26; $carry2 = ($h[2] + (1 << 25)) >> 26; $h[3] += $carry2; $h[2] -= $carry2 << 26; $carry4 = ($h[4] + (1 << 25)) >> 26; $h[5] += $carry4; $h[4] -= $carry4 << 26; $carry6 = ($h[6] + (1 << 25)) >> 26; $h[7] += $carry6; $h[6] -= $carry6 << 26; $carry8 = ($h[8] + (1 << 25)) >> 26; $h[9] += $carry8; $h[8] -= $carry8 << 26; foreach ($h as $i => $value) { $h[$i] = (int) $value; } return ParagonIE_Sodium_Core_Curve25519_Fe::fromArray($h); } /* * @internal You should not use this directly from another application * * Inline comments preceded by # are from libsodium's ref10 code. * * @param string $n * @param string $p * @return string * @throws SodiumException * @throws TypeError / public static function crypto_scalarmult_curve25519_ref10( #[SensitiveParameter] string $n, #[SensitiveParameter] string $p ): string { $e = $n; $e[0] = self::intToChr( self::chrToInt($e[0]) & 248 ); $e[31] = self::intToChr( (self::chrToInt($e[31]) & 127) \| 64 ); $x1 = self::fe_frombytes($p); $x2 = self::fe_1(); $z2 = self::fe_0(); $x3 = clone $x1; $z3 = self::fe_1(); $swap = 0; for ($pos = 254; $pos >= 0; --$pos) { # b = e[pos / 8] >> (pos & 7); $b = self::chrToInt( $e[$pos >> 3] ) >> ($pos & 7); $b &= 1; $swap ^= $b; self::fe_cswap($x2, $x3, $swap); self::fe_cswap($z2, $z3, $swap); $swap = $b; $tmp0 = self::fe_sub($x3, $z3); $tmp1 = self::fe_sub($x2, $z2); $x2 = self::fe_add($x2, $z2); $z2 = self::fe_add($x3, $z3); $z3 = self::fe_mul($tmp0, $x2); $z2 = self::fe_mul($z2, $tmp1); $tmp0 = self::fe_sq($tmp1); $tmp1 = self::fe_sq($x2); $x3 = self::fe_add($z3, $z2); $z2 = self::fe_sub($z3, $z2); $x2 = self::fe_mul($tmp1, $tmp0); $tmp1 = self::fe_sub($tmp1, $tmp0); $z2 = self::fe_sq($z2); $z3 = self::fe_mul121666($tmp1); $x3 = self::fe_sq($x3); $tmp0 = self::fe_add($tmp0, $z3); $z3 = self::fe_mul($x1, $z2); $z2 = self::fe_mul($tmp1, $tmp0); } self::fe_cswap($x2, $x3, $swap); self::fe_cswap($z2, $z3, $swap); $z2 = self::fe_invert($z2); $x2 = self::fe_mul($x2, $z2); return self::fe_tobytes($x2); } /* * @internal You should not use this directly from another application * * @param ParagonIE_Sodium_Core_Curve25519_Fe $edwardsY * @param ParagonIE_Sodium_Core_Curve25519_Fe $edwardsZ * @return ParagonIE_Sodium_Core_Curve25519_Fe / public static function edwards_to_montgomery( ParagonIE_Sodium_Core_Curve25519_Fe $edwardsY, ParagonIE_Sodium_Core_Curve25519_Fe $edwardsZ ): ParagonIE_Sodium_Core_Curve25519_Fe { $tempX = self::fe_add($edwardsZ, $edwardsY); $tempZ = self::fe_sub($edwardsZ, $edwardsY); $tempZ = self::fe_invert($tempZ); return self::fe_mul($tempX, $tempZ); } /* * @internal You should not use this directly from another application * * @param string $n * @return string * @throws SodiumException * @throws TypeError */ public static function crypto_scalarmult_curve25519_ref10_base( #[SensitiveParameter] string $n ): string { $e = $n; $e[0] = self::intToChr( self::chrToInt($e[0]) & 248 ); $e[31] = self::intToChr( (self::chrToInt($e[31]) & 127) \| 64 ); $A = self::ge_scalarmult_base($e); $pk = self::edwards_to_montgomery($A->Y, $A->Z); return self::fe_tobytes($pk); } }

| ver. 1.4 | Github | . | PHP 8.2.28 | Генерация страницы: 0 | proxy | phpinfo | Настройка