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Lsi Logic Corporation

Troy Mattison Hicks

Hung Thanh Nguyen

Eric Myron Smith

Daniel W Engels

Kenneth Alan Lauffenburger

Stephano Diaz

An efficient implementation of a cryptographic processor that dynamically updates the encryption state is described. The cryptographic processor can be implemented with a minimal number of gates, yet still perform cryptographic operations quickly. The cryptographic processor has an interface, a memory, a pseudorandom permutation block and control logic. The interface receives input data blocks and returns cryptographically processed data blocks. The memory is used to store an encryption state of the cryptographic processor. The pseudorandom permutation block transforms a portion of the encryption state that is modified for each input data block by at least the input data block and a previously transformed data block. The control logic routes data in the cryptographic processor to return cryptographically processed data blocks at the interface and update dynamically the encryption state stored in memory using the transformed data blocks from the pseudorandom permutation block.

Cryptographic processor with dynamic update of encryption state

The present invention provides for an article of clothing adapted to function as a scarf, the scarf including: a large tubular fabric material cut into a plurality of loops of fabric, the loops of fabric are stretched to a desired length; and a band of fabric adapted to bind the plurality of loops to thereby form the scarf designed to be worn around a user's neck.

Article of clothing

For use in a processor having separate instruction and data buses, separate instruction and data memories and separate instruction and data units, a mechanism for, and method of, supporting self-modifying code and a digital signal processor incorporating the mechanism or the method. In one embodiment, the mechanism includes: (1) a crosstie bus coupling the instruction bus and the data unit and (2) a request arbiter, coupled between the instruction and data units, that arbitrates requests therefrom for access to the instruction memory.

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Long Island City, NY, United States of America

Troy Mattison Hicks