04783798 is referenced by 32 patents and cites 6 patents.

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.

Title
Encrypting transponder
Application Number
6/712015
Publication Number
4783798
Application Date
March 14, 1985
Publication Date
November 8, 1988
Inventor
Samuel D Epstein
Great Falls
VA, US
Stephen W Leibholz
Rydal
PA, US
Agent
Woodcock Washburn Kurtz Mackiewicz & Norris
Assignee
ACS Communications Systems
VA, US
IPC
H04L 9/04
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