Файловый менеджер

Файловый менеджер - Редактировать - /var/www/xthruster/html/wp-includes/sodium_compat/src/Core/X25519.php

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<?php 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 * @psalm-suppress MixedAssignment / public static function fe_cswap( ParagonIE_Sodium_Core_Curve25519_Fe $f, ParagonIE_Sodium_Core_Curve25519_Fe $g, $b = 0 ) { $f0 = (int) $f[0]; $f1 = (int) $f[1]; $f2 = (int) $f[2]; $f3 = (int) $f[3]; $f4 = (int) $f[4]; $f5 = (int) $f[5]; $f6 = (int) $f[6]; $f7 = (int) $f[7]; $f8 = (int) $f[8]; $f9 = (int) $f[9]; $g0 = (int) $g[0]; $g1 = (int) $g[1]; $g2 = (int) $g[2]; $g3 = (int) $g[3]; $g4 = (int) $g[4]; $g5 = (int) $g[5]; $g6 = (int) $g[6]; $g7 = (int) $g[7]; $g8 = (int) $g[8]; $g9 = (int) $g[9]; $b = -$b; $x0 = ($f0 ^ $g0) & $b; $x1 = ($f1 ^ $g1) & $b; $x2 = ($f2 ^ $g2) & $b; $x3 = ($f3 ^ $g3) & $b; $x4 = ($f4 ^ $g4) & $b; $x5 = ($f5 ^ $g5) & $b; $x6 = ($f6 ^ $g6) & $b; $x7 = ($f7 ^ $g7) & $b; $x8 = ($f8 ^ $g8) & $b; $x9 = ($f9 ^ $g9) & $b; $f[0] = $f0 ^ $x0; $f[1] = $f1 ^ $x1; $f[2] = $f2 ^ $x2; $f[3] = $f3 ^ $x3; $f[4] = $f4 ^ $x4; $f[5] = $f5 ^ $x5; $f[6] = $f6 ^ $x6; $f[7] = $f7 ^ $x7; $f[8] = $f8 ^ $x8; $f[9] = $f9 ^ $x9; $g[0] = $g0 ^ $x0; $g[1] = $g1 ^ $x1; $g[2] = $g2 ^ $x2; $g[3] = $g3 ^ $x3; $g[4] = $g4 ^ $x4; $g[5] = $g5 ^ $x5; $g[6] = $g6 ^ $x6; $g[7] = $g7 ^ $x7; $g[8] = $g8 ^ $x8; $g[9] = $g9 ^ $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) { $h = array( self::mul((int) $f[0], 121666, 17), self::mul((int) $f[1], 121666, 17), self::mul((int) $f[2], 121666, 17), self::mul((int) $f[3], 121666, 17), self::mul((int) $f[4], 121666, 17), self::mul((int) $f[5], 121666, 17), self::mul((int) $f[6], 121666, 17), self::mul((int) $f[7], 121666, 17), self::mul((int) $f[8], 121666, 17), self::mul((int) $f[9], 121666, 17) ); /* @var int $carry9 / $carry9 = ($h[9] + (1 << 24)) >> 25; $h[0] += self::mul($carry9, 19, 5); $h[9] -= $carry9 << 25; /* @var int $carry1 / $carry1 = ($h[1] + (1 << 24)) >> 25; $h[2] += $carry1; $h[1] -= $carry1 << 25; /* @var int $carry3 / $carry3 = ($h[3] + (1 << 24)) >> 25; $h[4] += $carry3; $h[3] -= $carry3 << 25; /* @var int $carry5 / $carry5 = ($h[5] + (1 << 24)) >> 25; $h[6] += $carry5; $h[5] -= $carry5 << 25; /* @var int $carry7 / $carry7 = ($h[7] + (1 << 24)) >> 25; $h[8] += $carry7; $h[7] -= $carry7 << 25; /* @var int $carry0 / $carry0 = ($h[0] + (1 << 25)) >> 26; $h[1] += $carry0; $h[0] -= $carry0 << 26; /* @var int $carry2 / $carry2 = ($h[2] + (1 << 25)) >> 26; $h[3] += $carry2; $h[2] -= $carry2 << 26; /* @var int $carry4 / $carry4 = ($h[4] + (1 << 25)) >> 26; $h[5] += $carry4; $h[4] -= $carry4 << 26; /* @var int $carry6 / $carry6 = ($h[6] + (1 << 25)) >> 26; $h[7] += $carry6; $h[6] -= $carry6 << 26; /* @var int $carry8 / $carry8 = ($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 $p * @return string * @throws SodiumException * @throws TypeError / public static function crypto_scalarmult_curve25519_ref10($n, $p) { # for (i = 0;i < 32;++i) e[i] = n[i]; $e = '' . $n; # e[0] &= 248; $e[0] = self::intToChr( self::chrToInt($e[0]) & 248 ); # e[31] &= 127; # e[31] \|= 64; $e[31] = self::intToChr( (self::chrToInt($e[31]) & 127) \| 64 ); # fe_frombytes(x1,p); $x1 = self::fe_frombytes($p); # fe_1(x2); $x2 = self::fe_1(); # fe_0(z2); $z2 = self::fe_0(); # fe_copy(x3,x1); $x3 = self::fe_copy($x1); # fe_1(z3); $z3 = self::fe_1(); # swap = 0; /* @var int $swap / $swap = 0; # for (pos = 254;pos >= 0;--pos) { for ($pos = 254; $pos >= 0; --$pos) { # b = e[pos / 8] >> (pos & 7); /* @var int $b / $b = self::chrToInt( $e[(int) floor($pos / 8)] ) >> ($pos & 7); # b &= 1; $b &= 1; # swap ^= b; $swap ^= $b; # fe_cswap(x2,x3,swap); self::fe_cswap($x2, $x3, $swap); # fe_cswap(z2,z3,swap); self::fe_cswap($z2, $z3, $swap); # swap = b; $swap = $b; # fe_sub(tmp0,x3,z3); $tmp0 = self::fe_sub($x3, $z3); # fe_sub(tmp1,x2,z2); $tmp1 = self::fe_sub($x2, $z2); # fe_add(x2,x2,z2); $x2 = self::fe_add($x2, $z2); # fe_add(z2,x3,z3); $z2 = self::fe_add($x3, $z3); # fe_mul(z3,tmp0,x2); $z3 = self::fe_mul($tmp0, $x2); # fe_mul(z2,z2,tmp1); $z2 = self::fe_mul($z2, $tmp1); # fe_sq(tmp0,tmp1); $tmp0 = self::fe_sq($tmp1); # fe_sq(tmp1,x2); $tmp1 = self::fe_sq($x2); # fe_add(x3,z3,z2); $x3 = self::fe_add($z3, $z2); # fe_sub(z2,z3,z2); $z2 = self::fe_sub($z3, $z2); # fe_mul(x2,tmp1,tmp0); $x2 = self::fe_mul($tmp1, $tmp0); # fe_sub(tmp1,tmp1,tmp0); $tmp1 = self::fe_sub($tmp1, $tmp0); # fe_sq(z2,z2); $z2 = self::fe_sq($z2); # fe_mul121666(z3,tmp1); $z3 = self::fe_mul121666($tmp1); # fe_sq(x3,x3); $x3 = self::fe_sq($x3); # fe_add(tmp0,tmp0,z3); $tmp0 = self::fe_add($tmp0, $z3); # fe_mul(z3,x1,z2); $z3 = self::fe_mul($x1, $z2); # fe_mul(z2,tmp1,tmp0); $z2 = self::fe_mul($tmp1, $tmp0); } # fe_cswap(x2,x3,swap); self::fe_cswap($x2, $x3, $swap); # fe_cswap(z2,z3,swap); self::fe_cswap($z2, $z3, $swap); # fe_invert(z2,z2); $z2 = self::fe_invert($z2); # fe_mul(x2,x2,z2); $x2 = self::fe_mul($x2, $z2); # fe_tobytes(q,x2); return self::fe_tobytes($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 ) { $tempX = self::fe_add($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 $n * @return string * @throws SodiumException * @throws TypeError */ public static function crypto_scalarmult_curve25519_ref10_base($n) { # for (i = 0;i < 32;++i) e[i] = n[i]; $e = '' . $n; # e[0] &= 248; $e[0] = self::intToChr( self::chrToInt($e[0]) & 248 ); # e[31] &= 127; # e[31] \|= 64; $e[31] = self::intToChr( (self::chrToInt($e[31]) & 127) \| 64 ); $A = self::ge_scalarmult_base($e); if ( !($A->Y instanceof ParagonIE_Sodium_Core_Curve25519_Fe) \|\| !($A->Z instanceof ParagonIE_Sodium_Core_Curve25519_Fe) ) { throw new TypeError('Null points encountered'); } $pk = self::edwards_to_montgomery($A->Y, $A->Z); return self::fe_tobytes($pk); } }

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