Electrical computers and digital processing systems: support – Data processing protection using cryptography – By stored data protection
Reexamination Certificate
2000-11-07
2008-08-26
Colin, Carl (Department: 2136)
Electrical computers and digital processing systems: support
Data processing protection using cryptography
By stored data protection
C713S185000, C380S028000, C380S030000, C380S266000
Reexamination Certificate
active
07418598
ABSTRACT:
An encryption circuit for simultaneously processing various encryption algorithms, the circuit being capable of being coupled with a host system hosted by a computing machine. The circuit comprises an input/output module responsible for the data exchanges between the host system and the circuit via a dedicated bus. An encryption module coupled with the input/output module is in charge of the encryption and decryption operations. Isolation means between the input/output module and the encryption module makes the sensitive information stored in the encryption module inaccessible to the host system and ensures the parallelism of the operations performed by the input/output module and the encryption module. The circuit is supported on a peripheral component interconnect card. The circuit is specifically adapted to provide “hardware” protection of computer servers or stations.
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IBM Technical Disclosure Bulletin, Cryptographic Microcode Loading Controller for Secure Function, Sep. 1991, NB910934, pp. 1-5.
BUH HN Information Systems Inc.
Colin Carl
Driscoll Faith F.
Guenthner Russell W.
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