Digital radio transceiver with encrypted key storage

Details Digital radio transceiver with encrypted key storage Digital radio transceiver with encrypted key storage

1994-02-28

1996-01-02

Cangialosi, Salvatore

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

380 46, 380 50, H04L 908

Patent

active

054816106

ABSTRACT:
A digital radio has standardized "key" storage for several different cryptosystems (DES, VGE, VGS, etc.). Cryptographic keys are stored in a table in non-volatile memory such as EEPROM. The "keys" are stored in an "encrypted" form such that their identities are not readily revealed by a "dump" of memory contents. Additional security is provided in accordance with the present invention by extracting the "keys" from the stored table and re-"encrypting" the entire table each time a key loader device is attached to the radio. Multiple key banks are used to provide enhanced voice security by increasing the number of encryption keys available for use by a radio.

REFERENCES:
patent: 4246638 (1981-01-01), Thomas
patent: 4446519 (1984-05-01), Thomas
patent: 4525865 (1985-06-01), Mears
patent: 4593155 (1986-06-01), Hawkins
patent: 4658093 (1987-04-01), Hellman
patent: 4771459 (1988-09-01), Jansen
patent: 4811377 (1989-03-01), Krolopp et al.
patent: 4853962 (1989-08-01), Brockman
patent: 4862156 (1989-08-01), Westberg et al.
patent: 4864599 (1989-09-01), Saegusa et al.
patent: 4888802 (1989-12-01), Cooney
patent: 4897875 (1990-01-01), Pollard et al.
patent: 4941174 (1990-07-01), Ingham
patent: 4977594 (1990-12-01), Shear
patent: 5023936 (1991-06-01), Szczutkowski et al.
patent: 5027397 (1991-06-01), Double et al.
patent: 5029207 (1991-07-01), Gammie
patent: 5068894 (1991-11-01), Hoppe
patent: 5077790 (1991-12-01), D'Amico et al.
patent: 5091942 (1992-02-01), Dent
patent: 5093862 (1992-03-01), Scwartz
patent: 5109403 (1992-04-01), Sutphin
patent: 5115467 (1992-05-01), Esserman et al.
patent: 5120939 (1992-06-01), Claus et al.
patent: 5132729 (1992-07-01), Matsushita et al.
patent: 5144667 (1992-09-01), Pogue, Jr. et al.
patent: 5148485 (1992-09-01), Dent
patent: 5150412 (1992-09-01), Maru
patent: 5153919 (1992-10-01), Reeds, III et al.
patent: 5237611 (1993-08-01), Rasmussen et al.
patent: 5241597 (1993-08-01), Bright
patent: 5249227 (1993-09-01), Bergum et al.
patent: 5268962 (1993-12-01), Abadi et al.
patent: 5301247 (1994-04-01), Rasmussen et al.
U.S. patent application of Cooper, 08/113,643, filed Aug. 31, 1993.

Affiliated with

Also associated with

Rating

Digital radio transceiver with encrypted key storage does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Digital radio transceiver with encrypted key storage, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital radio transceiver with encrypted key storage will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-242105