ParagonIE_Sodium_Core_AES::encryptBlockECB( string $message, string $key ): string

368    public static function encryptBlockECB($message, $key)369    {370        if (self::strlen($message) !== 16) {371            throw new SodiumException('encryptBlockECB() expects a 16 byte message');372        }373        $comp_skey = self::keySchedule($key);374        $skey = $comp_skey->expand();375        $q = ParagonIE_Sodium_Core_AES_Block::init();376        $q[0] = self::load_4(self::substr($message, 0, 4));377        $q[2] = self::load_4(self::substr($message, 4, 4));378        $q[4] = self::load_4(self::substr($message, 8, 4));379        $q[6] = self::load_4(self::substr($message, 12, 4));380 381        $q->orthogonalize();382        self::bitsliceEncryptBlock($skey, $q);383        $q->orthogonalize();384 385        return self::store32_le($q[0]) .386            self::store32_le($q[2]) .387            self::store32_le($q[4]) .388            self::store32_le($q[6]);389    }