Self-Authenticating cryptographic apparatus

Details Self-Authenticating cryptographic apparatus Self-Authenticating cryptographic apparatus

2005-06-28

2005-06-28

Gregory, Bernarr E. (Department: 3662)

Cryptography

Key management

Having particular key generator

C380S042000, C380S043000, C380S046000, C380S028000, C380S277000

Reexamination Certificate

active

06912284

ABSTRACT:
A self-authenticating apparatus for effecting secure communication of a binary signal. In the encipherment apparatus, key is generated as a function of plain text summed with a pseudorandom linear sequence. The decipherment apparatus performs a reverse function in an autokey mode. Incoming cipher text is summed with generated key to create a plain text stream. As in the encipherment device, key is generated as a function of the resulting plain text summed with a pseudorandom linear sequence.

REFERENCES:
patent: 4172213 (1979-10-01), Barnes et al.
patent: RE30957 (1982-06-01), Feistel
patent: 4343967 (1982-08-01), McArdle
patent: 4404426 (1983-09-01), Safford
patent: 4434322 (1984-02-01), Ferrell

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