Cryptography – Key management – Having particular key generator
Patent
1991-11-05
1993-04-20
Swann, Tod R.
Cryptography
Key management
Having particular key generator
380 21, 380 47, H04L 902
Patent
active
052049035
ABSTRACT:
In a secure transmission system in which first and second pieces of communication equipment are interconnected via a transmission line, the first communication equipment has a conversion part for encrypting an information signal to be transmitted, through utilization of a received signal and the second communication equipment has an information memory for storing, as a key information, information to be transmitted to the first communication equipment and an inverse conversion part in which the encrypted signal received from the first communication equipment is decoded using the key information read out of the information memory. As the transmission information signal varies, the key information also varies accordingly. Hence, a highly secure transmission system and secure communication equipment can be realized.
REFERENCES:
patent: 4663500 (1987-05-01), Okamoto et al.
patent: 4926478 (1990-05-01), Gruenberg
patent: 4961221 (1990-10-01), Abiven
patent: 5008938 (1991-04-01), Freeburg et al.
J. Svigals; IBM Technical Disclosure Bulletin; vol. 25, No. 1, 1982; p. 279; "Dynamic Communication Key Accumulated from . . . ".
Kumozaki Kiyomi
Mano Fumio
Miki Noriki
Okada Kenji
Tokura Nobuyuki
Nippon Telegraph and Telephone Corporation
Swann Tod R.
LandOfFree
Secure communication equipment and secure transmission system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Secure communication equipment and secure transmission system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Secure communication equipment and secure transmission system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1531181