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    • 9. 发明授权
    • Encryption algorithm management system
    • 加密算法管理系统
    • US07079655B1
    • 2006-07-18
    • US09679541
    • 2000-10-06
    • Kouya TochikuboKoji OkadaNaoki Endo
    • Kouya TochikuboKoji OkadaNaoki Endo
    • H04L9/00H04L9/32H04K1/00G06F11/30G06F12/14G06Q99/00
    • H04L9/0891
    • 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 encryption algorithm when the ciphered encryption algorithm is decrypted, and an encryption controller configured to renew the common cipher-key in case of receiving the encrypted data from the center unit in response to the demand, and to produce an encryption algorithm by decrypting the encrypted data with the renewed common cipher-key. The center unit includes a key controller configured to renew the common cipher-key so as to be identical with the renewed common cipher-key in case of receiving the demand from the transmitter and an encoder configured to produce the encrypted data by encrypting a cipher-key with the renewed common cipher-key and to transmit the encrypted data to the terminal unit.
    • 加密算法管理系统具有终端单元和具有与加密加密算法相同的密码密钥的中心单元。 终端单元包括发送器,被配置为当解密加密加密算法时向中心单元发送请求以获得解密加密加密算法所需的加密数据;以及加密控制器,被配置为在普通加密密钥的情况下更新公用密钥 响应于需求从中心单元接收加密数据,并通过用更新的公用密钥对加密数据进行解密来产生加密算法。 中心单元包括:密钥控制器,被配置为在接收到来自发射机的请求的情况下更新公用密钥,以便与更新的公用密钥相同;以及编码器,被配置为通过加密加密密钥来产生加密数据, 密钥与更新的通用密钥,并将加密数据发送到终端单元。