Data encryption and decryption system and method using...

Details Data encryption and decryption system and method using... Data encryption and decryption system and method using...

2007-10-09

2007-10-09

Moazzami, Nasser (Department: 2136)

Cryptography

Communication system using cryptography

Time segment interchange

C380S028000

Reexamination Certificate

active

10161070

ABSTRACT:
A system and method for implementing the Triple Data Encryption Algorithm (TDEA) for the Data Encryption Standard (DES) using merger ciphers is provided which may be configured to operate in the chain block cipher (CBC) mode. Data blocks are enciphered using less computations in the critical timing path significantly reducing the time required for each round of ciphering. Two permutation function (Ef) elements (218, 220) operate separately during each ciphering round eliminating an XOR operation from the critical path.

REFERENCES:
patent: 5003597 (1991-03-01), Merkle
patent: 5317638 (1994-05-01), Kao et al.
patent: 5432848 (1995-07-01), Butter et al.
Bruce Schneier, and John Kelsey, “Unbalanced Feistel Networks and Block-Ciper Design”, Counterpane Systems.
Wikipedia, “Feistel cipher”, www.wikipedia.com, viewed Jan. 18, 2006.
Alfred L. Menezes, Paul C. van Oorschot, Scott A. Vanstone, “Chapter 7: Section 4”, Handbook of Applied Cryptography, Revised Edition, 1997, p. 250-259.
Broscius A G et al: “Exploiting Parallelism in Hardware Implementation of the Des” Advances in Cryptology. Santa Barbara, Aug. 11-15, 1991, Proceedings of the Conference on Theory and Applications of Cryptographic Techniques (Crypto), Berlin, Springer, DE, 1991, pp. 367-376, XP000269040.
International Search Report mailed Nov. 29, 2002 from European Patent Office for counterpart PCT application No. PCT/US02/19083.

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