Geforce File Manager

NAME	SIZE	ACTIONS
📁 AEGIS		[ DEL ]
📁 AES		[ DEL ]
📁 Base64		[ DEL ]
📁 ChaCha20		[ DEL ]
📁 Curve25519		[ DEL ]
📁 Poly1305		[ DEL ]
📁 SecretStream		[ DEL ]
📄 AEGIS128L.php	3,668 B	[ EDIT ] \| [ DEL ]
📄 AEGIS256.php	3,598 B	[ EDIT ] \| [ DEL ]
📄 AES.php	15,885 B	[ EDIT ] \| [ DEL ]
📄 BLAKE2b.php	24,192 B	[ EDIT ] \| [ DEL ]
📄 ChaCha20.php	12,889 B	[ EDIT ] \| [ DEL ]
📄 Curve25519.php	143,641 B	[ EDIT ] \| [ DEL ]
📄 Ed25519.php	18,482 B	[ EDIT ] \| [ DEL ]
📄 HChaCha20.php	4,140 B	[ EDIT ] \| [ DEL ]
📄 HSalsa20.php	3,673 B	[ EDIT ] \| [ DEL ]
📄 Poly1305.php	1,576 B	[ EDIT ] \| [ DEL ]
📄 Ristretto255.php	21,884 B	[ EDIT ] \| [ DEL ]
📄 Salsa20.php	8,233 B	[ EDIT ] \| [ DEL ]
📄 SipHash.php	8,233 B	[ EDIT ] \| [ DEL ]
📄 Util.php	28,904 B	[ EDIT ] \| [ DEL ]
📄 X25519.php	8,413 B	[ EDIT ] \| [ DEL ]
📄 XChaCha20.php	3,320 B	[ EDIT ] \| [ DEL ]
📄 XSalsa20.php	1,371 B	[ EDIT ] \| [ DEL ]

[ CLOSE ]

EDIT: XSalsa20.php

<?php

if (class_exists('ParagonIE_Sodium_Core_XSalsa20', false)) {
    return;
}

/**
 * Class ParagonIE_Sodium_Core_XSalsa20
 */
abstract class ParagonIE_Sodium_Core_XSalsa20 extends ParagonIE_Sodium_Core_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
            )
        );
    }
}