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📁 ..
📄 BLAKE2b.php(21.8 KB)
📁 ChaCha20
📄 ChaCha20.php(14.17 KB)
📁 Curve25519
📄 Curve25519.php(129.86 KB)
📄 Ed25519.php(15.37 KB)
📄 HChaCha20.php(5.17 KB)
📄 HSalsa20.php(6.78 KB)
📄 Int32.php(24 KB)
📄 Int64.php(30.44 KB)
📁 Poly1305
📄 Poly1305.php(1.55 KB)
📄 Salsa20.php(11.24 KB)
📁 SecretStream
📄 SipHash.php(6.46 KB)
📄 Util.php(209 B)
📄 X25519.php(10.78 KB)
📄 XChaCha20.php(2.4 KB)
📄 XSalsa20.php(1.35 KB)

Editing: XSalsa20.php

<?php

if (class_exists('ParagonIE_Sodium_Core32_XSalsa20', false)) {
    return;
}

/**
 * Class ParagonIE_Sodium_Core32_XSalsa20
 */
abstract class ParagonIE_Sodium_Core32_XSalsa20 extends ParagonIE_Sodium_Core32_HSalsa20
{
    /**
     * Expand a key and nonce into an xsalsa20 keystream.
     *
     * @internal You should not use this directly from another application
     *
     * @param int $len
     * @param string $nonce
     * @param string $key
     * @return string
     * @throws SodiumException
     * @throws TypeError
     */
    public static function xsalsa20($len, $nonce, $key)
    {
        $ret = self::salsa20(
            $len,
            self::substr($nonce, 16, 8),
            self::hsalsa20($nonce, $key)
        );
        return $ret;
    }

/**
     * Encrypt a string with XSalsa20. Doesn't provide integrity.
     *
     * @internal You should not use this directly from another application
     *
     * @param string $message
     * @param string $nonce
     * @param string $key
     * @return string
     * @throws SodiumException
     * @throws TypeError
     */
    public static function xsalsa20_xor($message, $nonce, $key)
    {
        return self::xorStrings(
            $message,
            self::xsalsa20(
                self::strlen($message),
                $nonce,
                $key
            )
        );
    }
}

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Editing: XSalsa20.php

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