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    • 1. 发明授权
    • System, method, and program for managing a user key used to sign a message for a data processing system
    • 用于管理用于对数据处理系统的消息进行签名的用户密钥的系统,方法和程序
    • US08307098B1
    • 2012-11-06
    • US09651548
    • 2000-08-29
    • Barry AtkinsDavid Carroll ChallenerFrank NovakJoseph Gary RusnakKenneth D. TimmonsWilliam W. Vetter
    • Barry AtkinsDavid Carroll ChallenerFrank NovakJoseph Gary RusnakKenneth D. TimmonsWilliam W. Vetter
    • G06F15/16
    • H04L9/0822H04L9/0891H04L9/3268
    • A system, method, and program for managing a user key used to sign a message for a data processing system having an encryption chip are disclosed. A user is assigned a user key. In order to encrypt and send messages to a recipient(s), the messages are encrypted with the user key. The user key, in turn, is encrypted with an associated key. The associated key is further encrypted using an encryption chip key stored on the encryption chip. The encrypted messages are communicated to a recipient to validate an association of the user with the encrypted messages. The associated key is decrypted with the encryption chip key. The user key is decrypted with the associated key, and the messages are decrypted with the user key. Thereafter, validation of the association of messages with the user is removed by revoking the associated key. In a preferred embodiment, encryption resources are centralized in a server system having the encryption chip. The server system is coupled to and provides encryption services to a plurality of client systems. Messages to be encrypted are sent from a user's client system to the server system, which encrypts the messages using the encryption chip. The encrypted messages are sent from the server system to the client system, which then transmits the encrypted messages to their intended recipient(s). All data relating to the encrypted messages are erased from the server system after the encrypted messages are sent from the server system to the client system.
    • 公开了一种用于管理用于签署具有加密芯片的数据处理系统的消息的用户密钥的系统,方法和程序。 给用户分配一个用户密钥。 为了加密和发送消息给收件人,消息用用户密钥加密。 用户密钥依次用相关密钥加密。 使用存储在加密芯片上的加密芯片密钥进一步加密相关密钥。 将加密的消息传送到接收者以验证用户与加密消息的关联。 相关密钥用加密芯片密钥解密。 用关键字解密用户密钥,用用户密钥对消息进行解密。 此后,通过撤消关联的密钥来消除与用户的消息关联的验证。 在优选实施例中,加密资源集中在具有加密芯片的服务器系统中。 服务器系统耦合到并向多个客户端系统提供加密服务。 要加密的消息从用户的客户端系统发送到服务器系统,服务器系统使用加密芯片加密消息。 加密的消息从服务器系统发送到客户端系统,然后客户端系统将加密的消息发送到其预期的接收者。 在将加密的消息从服务器系统发送到客户端系统之后,与加密消息相关的所有数据从服务器系统中被擦除。