State-varying hybrid stream cipher

Details State-varying hybrid stream cipher State-varying hybrid stream cipher

2006-09-05

2006-09-05

Barron, Jr., Gilberto (Department: 2132)

Cryptography

Communication system using cryptography

Time segment interchange

C380S029000, C380S043000, C380S044000, C380S046000

Reexamination Certificate

active

07103181

ABSTRACT:
In one embodiment, a state-varying hybrid stream cipher operating within a computing device. The state-varying hybrid stream cipher comprises at least two software routines. A first routine is responsible for dividing incoming plain text into variable-sized blocks. A second software routine is for converting the plain text into cipher text based on an encryption key, an internal identifier and perhaps a percentage of random data value.

REFERENCES:
patent: 4316055 (1982-02-01), Feistel
patent: 4613901 (1986-09-01), Gilhousen et al.
patent: 4953208 (1990-08-01), Ideno
patent: 5020106 (1991-05-01), Rabold et al.
patent: 5195136 (1993-03-01), Hardy et al.
patent: 5509073 (1996-04-01), Monnin
patent: 5590194 (1996-12-01), Ryan
patent: 5621799 (1997-04-01), Katta et al.
patent: 5673319 (1997-09-01), Bellare et al.
patent: 5727062 (1998-03-01), Ritter
patent: 5822432 (1998-10-01), Moskowitz et al.
patent: 5825879 (1998-10-01), Davis
patent: 5852472 (1998-12-01), Prasad et al.
patent: 5862150 (1999-01-01), Lavelle et al.
patent: 5940509 (1999-08-01), Jovanovich et al.
patent: 5963646 (1999-10-01), Fielder et al.
patent: 6005940 (1999-12-01), Kulinets
patent: 6061449 (2000-05-01), Candelore et al.
patent: 6122379 (2000-09-01), Barbir
patent: 6154541 (2000-11-01), Zhang
patent: 6167136 (2000-12-01), Chou
patent: 6192129 (2001-02-01), Coppersmith et al.
patent: 6212635 (2001-04-01), Reardon
patent: 6243470 (2001-06-01), Coppersmith et al.
patent: 6490353 (2002-12-01), Tan
patent: 0599366 (1993-11-01), None
patent: WO96/06504 (1995-08-01), None
patent: WO99/19822 (1998-09-01), None
patent: WO99/18729 (1998-10-01), None
patent: WO01/17251 (2000-08-01), None
Stallings, William; Cryptography and Network Security; Jun. 4, 1998; Prentice-Hall, Inc.; 2ndEdition; pp. 299-319.
Schneier, Bruce; Applied Cryptography; 1996; John Wiley & Sons, Inc.; chapter 24.
Schneier, Bruce; Applied Cryptography; 2ndEdition; 1996; John Wiley & Sons Inc.; Chapter 8.
Heys, H., “Delay Characteristics of Statistical Cipher Feedback Mode,” IEEE May 2001, 0-7803-7080, pp. 5-9.
Simmons, G., “Symmetric and Asymmetric Encryption,” Computing Surveys, vol. 11, No. 4, Dec. 1979, pp. 305-330.
“High-bandwith Digital Content Protection System,” Rev. 1.0, Feb. 17, 2000, Digital Content Protection LLC, ISBN 0-9675129-4-8, pp. 4-59.
Schneier, B., “Applied Cryptography: protocols, algorithms, and source code in C,” Second Edition, Library of Congress, Copyright 1996, Chapters 2-6 and 12-17.

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