Encrypting transponder

Details Encrypting transponder Encrypting transponder

1985-03-14

1988-11-08

Cangialosi, Salvatore

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

380 25, H04L 904

Patent

active

047837985

ABSTRACT:
An encrypting transponder provides data security for transmissions between a terminal and a remote computer, network or terminal. The transponder provides positive user and terminal identification before access to a remote computer file is permitted, and further provides for secure message authentication during the course of data transmission. The transponder is passive and operates in response to interrogation from a remote host computer, thus making it useful with many different operating system and hand-shake protocols.

REFERENCES:
patent: 3984637 (1976-10-01), Candill et al.
patent: 4193131 (1980-03-01), Lennon et al.
patent: 4386266 (1983-05-01), Chesarek
patent: 4423287 (1983-12-01), Zeidler
patent: 4471216 (1984-09-01), Herve
patent: 4578530 (1986-03-01), Zeidler

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