Method for loading encryption keys into secure transmission devi

Details Method for loading encryption keys into secure transmission devi Method for loading encryption keys into secure transmission devi

1993-03-26

1994-11-08

Cangialosi, Salvatore

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

380 50, H04L 908

Patent

active

053634470

ABSTRACT:
An encryption code and at least one key are provided to a secure transmission device, via an external keying device, and stored in a first volatile memory. An encrypted representation of the at least one key, based on the encryption code and the at least one key, is generated and stored in a non-volatile memory. Upon power down of the secure transmission device, the encryption code is stored in a second volatile memory and the at least one key and encryption code stored in the first volatile memory are erased.

REFERENCES:
patent: 4369332 (1983-01-01), Campbell, Jr.
patent: 5093860 (1992-03-01), Steinbrenner et al.
patent: 5146497 (1992-09-01), Bright
patent: 5161189 (1992-11-01), Bray et al.
patent: 5164986 (1992-11-01), Bright
patent: 5241597 (1993-08-01), Bright
patent: 5247576 (1993-09-01), Bright
patent: 5249227 (1993-09-01), Bergum et al.

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