Method for preventing and detecting hash collisions of data...

Details Method for preventing and detecting hash collisions of data... Method for preventing and detecting hash collisions of data...

2008-03-27

2011-12-27

Reza, Mohammad (Department: 2436)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Particular communication authentication technique

C713S160000, C713S180000, C713S181000, C726S023000, C726S026000, C380S255000, C707S698000, C707S692000, C707S693000, C707S747000

Reexamination Certificate

active

08086860

ABSTRACT:
A means for avoiding hash collisions by means of message pre-processing function to increase randomness and reduce redundancy of an input message whereby hash collisions are avoided when it is applied before hashing any message and the message pre-processing function comprises 4 steps like shuffling of bits, compression T-function and LFSR which steps increase the entropy of the input message at the end of 4 rounds, the output becomes more random.

REFERENCES:
patent: 5892829 (1999-04-01), Aiello
patent: 6021201 (2000-02-01), Bakhle
patent: 6052698 (2000-04-01), Bennett
patent: 6091821 (2000-07-01), Buer
patent: 6141421 (2000-10-01), Takaragi
patent: 2006/0294386 (2006-12-01), Yuval
patent: WO 2004/042602 (2004-05-01), None

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