Computer network encryption/decryption device

Cryptography – Key management – Having particular key generator

Patent

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Details

380 9, 380 50, H04L 900

Patent

active

056404565

ABSTRACT:
A computer network encryption/decryption device includes at least one microprocessor, microprocessor support hardware, at least two network ports for connecting to upstream and downstream networks, memory hardware for storing program, configuration, and keylist data, and data encryption/decryption hardware. Both network ports have the same network address, making the device transparent to the local area network in which it is spliced. The device operates by selectively encrypting or decrypting only the data portion of a data packet, leaving the routing information contained in the header and trailer portions of the data packet unchanged.

REFERENCES:
patent: 4159468 (1979-06-01), Barnes et al.
patent: 5442708 (1995-08-01), Adams, Jr. et al.
patent: 5444782 (1995-08-01), Adams, Jr. et al.

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