Abstract: A data encryption device comprising a first and a second port adapted to communicate data from at least one external unit, an encryption unit connected to the first port, an internal memory connected to the encryption unit, a decryption unit connected to the internal memory and to the second port, and an authentication unit connected to the encryption unit and the decryption unit. The authentication is adapted to provide an authentication signal in response to a valid authentication of a user. The encryption unit is adapted to receive an authentication signal from the authentication unit and in response to a receipt of the authentication signal encrypt data received from the first port and transfer the encrypted data to the internal memory. The decryption unit is adapted to receive an authentication signal from the authentication unit and in response to a receipt of the authentication signal decrypt data received from the internal memory and transfer the decrypted data to the second port.