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функция не описана

ParagonIE_Sodium_Core_HSalsa20::hsalsa20() public WP 1.0

Calculate an hsalsa20 hash of a single block

HSalsa20 doesn't have a counter and will never be used for more than one block (used to derive a subkey for xsalsa20).

Это метод класса: ParagonIE_Sodium_Core_HSalsa20{}

Хуков нет.

Возвращает

Строку.

Использование

$result = ParagonIE_Sodium_Core_HSalsa20::hsalsa20( $in, $k, $c );
$in(строка) (обязательный)
$k(строка) (обязательный)
$c(строка/null)

По умолчанию: null

Код ParagonIE_Sodium_Core_HSalsa20::hsalsa20() WP 5.5.1

<?php
public static function hsalsa20($in, $k, $c = null)
{
    if ($c === null) {
        $x0  = 0x61707865;
        $x5  = 0x3320646e;
        $x10 = 0x79622d32;
        $x15 = 0x6b206574;
    } else {
        $x0  = self::load_4(self::substr($c, 0, 4));
        $x5  = self::load_4(self::substr($c, 4, 4));
        $x10 = self::load_4(self::substr($c, 8, 4));
        $x15 = self::load_4(self::substr($c, 12, 4));
    }
    $x1  = self::load_4(self::substr($k, 0, 4));
    $x2  = self::load_4(self::substr($k, 4, 4));
    $x3  = self::load_4(self::substr($k, 8, 4));
    $x4  = self::load_4(self::substr($k, 12, 4));
    $x11 = self::load_4(self::substr($k, 16, 4));
    $x12 = self::load_4(self::substr($k, 20, 4));
    $x13 = self::load_4(self::substr($k, 24, 4));
    $x14 = self::load_4(self::substr($k, 28, 4));
    $x6  = self::load_4(self::substr($in, 0, 4));
    $x7  = self::load_4(self::substr($in, 4, 4));
    $x8  = self::load_4(self::substr($in, 8, 4));
    $x9  = self::load_4(self::substr($in, 12, 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);
    }

    return self::store32_le($x0) .
        self::store32_le($x5) .
        self::store32_le($x10) .
        self::store32_le($x15) .
        self::store32_le($x6) .
        self::store32_le($x7) .
        self::store32_le($x8) .
        self::store32_le($x9);
}