Cryptographic communication system and a cryptographic processing apparatus and computer program and encryption communication method

摘要

The management apparatus 100 stores the data for the master key and a temporary key generation, periodically updates the temporary key generation data. The management apparatus 100 generates temporary key from the master key and the temporary key generation data, and notifies the temporary key and the temporary key generation data for the cryptographic communication unit 200. Encryption communication apparatus 200, the temporary key generation data and then notifies the cryptographic communication unit 300, the encrypted communication with the cryptographic communication unit 300 by using the temporary key. Encryption communication device 300 stores the data for verification and the master key, to regularly update the verification data. Encryption communication apparatus 300 verifies the temporary key generation data notified from the encryption communication apparatus 200 using the verification data, the cryptographic communication unit 200 by using the temporary key generated from the master key and the temporary key generation data and it will be encrypted communication.