Security apparatus for data transmission with dynamic random enc

Details Security apparatus for data transmission with dynamic random enc Security apparatus for data transmission with dynamic random enc

1999-07-23

2000-07-25

Hayes, Gail O.

Cryptography

Electric signal modification

Including particular structure or housing

380 28, 713184, 713202, H04L 900

Patent

active

060944862

ABSTRACT:
A security apparatus including a number input device (302), an address register (312) responsive to the number input device, an encryption schema memory (316) addressable by the address register to produce an output code and a relative address code, and address incrementing logic (310) responsive the relative address code and operative to increment the address register. The apparatus also preferably includes a PIN register (304) coupled to the number input device, a public code register (306) coupled to the number input device, and merging logic (308) merging outputs of the PIN register and the public code register to be input to the address register. The apparatus also preferably includes an output shift register operative to shift out the output code of the encryption schema memory. The encryption schema memory can be read only memory, writeable memory, or both.

REFERENCES:
patent: 4398244 (1983-08-01), Chu et al.
patent: 4799258 (1989-01-01), Davies
patent: 5146500 (1992-09-01), Maurer
patent: 5199069 (1993-03-01), Barrett et al.
patent: 5245658 (1993-09-01), Bush et al.
patent: 5440640 (1995-08-01), Anshel et al.
patent: 5452358 (1995-09-01), Normile et al.
patent: 5517614 (1996-05-01), Tajima et al.
patent: 5548648 (1996-08-01), Yorke-Smith
patent: 5623637 (1997-04-01), Jones et al.
patent: 5724423 (1998-03-01), Khello
patent: 5742686 (1998-04-01), Finley
patent: 5751808 (1998-05-01), Anshel et al.
patent: 5778071 (1998-07-01), Caputo et al.
patent: 5832091 (1998-11-01), Tomko et al.

Affiliated with

Also associated with

Rating

Security apparatus for data transmission with dynamic random enc does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Security apparatus for data transmission with dynamic random enc, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Security apparatus for data transmission with dynamic random enc will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1341999