An encryption algorithm management system has a terminal unit and a center unit that have a common cipher-key to a ciphered encryption algorithm. The terminal unit includes a transmitter configured to transmit a demand to the center unit for obtaining an encrypted data needed for decrypting the ciphered...http://www.google.fr/patents/US7079655?utm_source=gb-gplus-shareBrevet US7079655 - Encryption algorithm management system
