Method and apparatus for designing cipher logic, and a...

Details Method and apparatus for designing cipher logic, and a... Method and apparatus for designing cipher logic, and a...

2000-12-19

2008-03-18

Sheikh, Ayaz (Department: 2131)

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

C380S028000, C380S037000, C380S042000, C380S044000, C713S189000, C713S168000

Reexamination Certificate

active

07346161

ABSTRACT:
An optimization processing unit optimizes an input and output bit number of an S-box based on parameters inputted from an input unit. The examples of the parameters are memory capacity of a primary cache memory, entire input and output bit number, and smallest input and output number of the S-box. An S-box generating unit generates an S-box in accordance with the optimized input and output bit number of the S-box. Then, an F-function generating unit generates an F-function by aligning a plurality of S-boxes thus generated.

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Preneel et al., “Recent Developments in the Design of Conventional Cryptographic Algorithms”, XP-000979891, pp. 105-130.

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