Inverse calculation apparatus and recording medium having...

Electrical computers: arithmetic processing and calculating – Electrical digital calculating computer – Particular function performed

Reexamination Certificate

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C708S491000

Reexamination Certificate

active

06850960

ABSTRACT:
In an inverse calculation, x is road out of a storage means, [x/2] is calculated and stored therein as b, a lent significant bit of b is stored as a, [(ax+b)/2] is calculated and stored as updated b, and low-order two bits of x are stored as y. Then, for i=1, 2, . . . , n−1, by is calculated, a is updated with −by, [(b+ax)/(2^(2i))] is calculated and stored as updated b, and y+a2^(2i) is calculated and stored as updated y, where y is road out as the result of inverse calculation.

REFERENCES:
patent: 5519647 (1996-05-01), DeVille
patent: 5539827 (1996-07-01), Liu
patent: 5687238 (1997-11-01), Shimada
patent: 5825886 (1998-10-01), Adams et al.
patent: 5928310 (1999-07-01), Whittaker
patent: 6298136 (2001-10-01), Den Boer
patent: 6408075 (2002-06-01), Ohki et al.
patent: 60-167062 (1985-08-01), None
patent: 11-071255 (1999-03-01), None
The Ciper Shark, Lecture Notes in Computer Science, Vincent Rijmen et al., vol. 1039, pp. 99-111, undated.
Kanda, Masayuki et al., “A New 128-bit Block Cipher E2”, Technical Report of IEICE, The Institute of Electronics, Information and Communication Engineers, Jul. 1998.
Aoki, Kazumaro et al., “Software Implementations for E2”, Proceedings of the 1999 Symposium on Cryptography and Information Security, vol. 2, Jan. 26-29, 1999, pp. 801-806.
Aoki, Kazumaro et al., “Optimized Software Implementations of E2” Presented at the AES, pp. 1-11, undated.
Schneiter, Bruce, Applied Crptography, 2nd Edition, John Wiley & Sons, Chapters 12.4-12.5, 14.10, and 15.5-15-6, pp. 285-293, 347, and 366-367, undated.
Hans Zassenhaus, “On Hensel Factorization, I,” Journal of Number Theory, vol. 1, pp. 291-311, 1969.
Rijimen, Vincent et al., “The Cipher Shark”, Fast Software Encryption, Dieter Gollmann, Ed., Springer, pp. 99-110, undated.

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