ParagonIE_Sodium_Core32_Poly1305

10abstract class ParagonIE_Sodium_Core32_Poly1305 extends ParagonIE_Sodium_Core32_Util11{12    const BLOCK_SIZE = 16;13 14    /**15     * @internal You should not use this directly from another application16     *17     * @param string $m18     * @param string $key19     * @return string20     * @throws SodiumException21     * @throws TypeError22     */23    public static function onetimeauth($m, $key)24    {25        if (self::strlen($key) < 32) {26            throw new InvalidArgumentException(27                'Key must be 32 bytes long.'28            );29        }30        $state = new ParagonIE_Sodium_Core32_Poly1305_State(31            self::substr($key, 0, 32)32        );33        return $state34            ->update($m)35            ->finish();36    }37 38    /**39     * @internal You should not use this directly from another application40     *41     * @param string $mac42     * @param string $m43     * @param string $key44     * @return bool45     * @throws SodiumException46     * @throws TypeError47     */48    public static function onetimeauth_verify($mac, $m, $key)49    {50        if (self::strlen($key) < 32) {51            throw new InvalidArgumentException(52                'Key must be 32 bytes long.'53            );54        }55        $state = new ParagonIE_Sodium_Core32_Poly1305_State(56            self::substr($key, 0, 32)57        );58        $calc = $state59            ->update($m)60            ->finish();61        return self::verify_16($calc, $mac);62    }63}