Methods and apparatus for keystream generation

Details Methods and apparatus for keystream generation Methods and apparatus for keystream generation

2005-11-01

2005-11-01

Morse, Gregory (Department: 2134)

Cryptography

Key management

Having particular key generator

C380S046000, C380S047000, C380S262000, C380S265000, C380S268000

Reexamination Certificate

active

06961427

ABSTRACT:
Methods and apparatus for the generation of a cryptographic one way function (a key or keystream generator) for use in encrypting or decrypting binary data. A non-linear key or keystream generation algorithm using multiple feedback shift registers is provided. The feedback shift registers may be constructed utilizing an advanced mathematical construct called an extended Galois Field GF(2m). The key or keystream is generated as a non-linear function of the outputs of the multiple feedback shift registers, which may be a combination of static feedback shift registers and dynamic feedback shift registers. Dense primitive polynomials with many coefficients may be used to produce a cryptographically robust keystream for use as an encryption or decryption key.

REFERENCES:
patent: 4860353 (1989-08-01), Brown
patent: 5515307 (1996-05-01), Aiello et al.
patent: 5727063 (1998-03-01), Aiello et al.
patent: 6763363 (2004-07-01), Driscoll
patent: 2002/0006195 (2002-01-01), Venkatesan et al.
patent: 2002/0015493 (2002-02-01), Rose
patent: 2003/0206634 (2003-11-01), Rose
patent: 0913964 (1999-06-01), None
Schneier, B “Applied Cryptography, Protocols, Algorithms and Source Code in C”, 1996, John Wiley & Son, Inc., Second Edition, pp. 166-167, 175, 283, 254-255, 369-421.
Stoklosa et al., “Integrity of data: FSR-Hash”, Sep. 1995, Proceedings of the 12th International Conference on Systems Science, vol. 3, Wroclaw, Poland, 12-15.

Affiliated with

Also associated with

Rating

Methods and apparatus for keystream generation does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Methods and apparatus for keystream generation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Methods and apparatus for keystream generation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3451626