Cryptography – Particular algorithmic function encoding
Reexamination Certificate
2007-01-09
2007-01-09
Barrón, Jr., Gilberto (Department: 2132)
Cryptography
Particular algorithmic function encoding
C380S277000
Reexamination Certificate
active
09787648
ABSTRACT:
For cryptographically processing data, data (X) and a key (K) are fed to a cryptographic process (P), which may be a known process. In order to veil the nature of the process (P), auxiliary values as fed to the process, such as a supplementary key (K*), using which a supplementary process (P*) generates the key proper (K). The combination of the original process (P) and the supplementary process (P*) provides an unknown process, hence, the relationship between the supplementary key (K*) and the processed data (Y) is unknown. As a result, improved cryptographic security results.
REFERENCES:
patent: 4302810 (1981-11-01), Bouricius et al.
patent: 5003596 (1991-03-01), Wood
patent: 5442705 (1995-08-01), Miyano
patent: 5724428 (1998-03-01), Rivest
patent: 5745577 (1998-04-01), Leech
patent: 5768390 (1998-06-01), Coppersmith et al.
patent: 6028933 (2000-02-01), Heer et al.
patent: 0 896 452 (1999-02-01), None
patent: 0896452 (1999-10-01), None
B. Schneier, Chapter 15—Combining Block Ciphers (Applied Cryptography□□- 2nd Edition, (* 1996, Pub. by John Wiley & Sons, Inc.) pp. 363, 366-367.
A. Biham et al, “How To Strengthen DES Using Existing Hardware”, Advances in Cryptology—Asiacrypt '94, 4th International Conference on the Theory and Applications of Cryptology, Wollongong, Australia, Nov. 28-Dec. 1, 1994, Proceedings, pp. 398-412.
B. Schneier, “Chapter 12—Data Encryption Standard (DES)”, Applied Cryptography—2nd Edition, (© 1996, Pub. by John Wiley & Sons, Inc.) pp. 265-300.
B. Schneier, “Chapter 19—Public-Key Algorithms”, Applied Cryptography—2nd Edition, (© 1996, Pub. by John Wiley & Sons, Inc.) pp. 466-474.
Muller Frank
Roelofsen Gerrit
Rombaut Willem
Van Bruchem Dirk Jan Jacobus
Barrón Jr. Gilberto
Michaelson Peter L.
Michaelson & Associates
Nokia Corporation
Sandoval Kristin D.
LandOfFree
Method and device for cryptographically processing data does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and device for cryptographically processing data, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and device for cryptographically processing data will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3756034