Cryptography – Communication system using cryptography – Time segment interchange
Reexamination Certificate
2006-02-03
2010-12-21
Abrishamkar, Keveh (Department: 2431)
Cryptography
Communication system using cryptography
Time segment interchange
Reexamination Certificate
active
07856102
ABSTRACT:
Methods and apparatus provide for: dividing a quantity of data values into a plurality of blocks; dividing the plurality of blocks into respective sub-sets of blocks; computing an intermediate message authentication code block for each sub-set of blocks by performing a first cipher block chaining algorithm on the blocks of each sub-set of blocks; and computing a message authentication code block for the plurality of blocks by performing a second cipher block chaining algorithm on the intermediate message authentication code blocks.
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Abrishamkar Keveh
Almamun Abdullah
Dernier, Esq. Matthew B.
Gibson & Dernier LLP
Sony Computer Entertainment Inc.
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