Data encryption

Cryptography – Communication system using cryptography – Time segment interchange

Reexamination Certificate

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Details

C380S277000, C380S028000, C380S042000, C377S044000

Reexamination Certificate

active

10268971

ABSTRACT:
A method of encrypting a data unit, the method comprising the steps of dividing the data unit into a series of data blocks, and for each data block, applying a block cipher function to a data block counter value to generate an encrypted block counter value, performing a logical operation to combine the encrypted block counter with the data block, and applying a block cipher function to the combined data.

REFERENCES:
patent: 5351299 (1994-09-01), Matsuzaki et al.
patent: 5619576 (1997-04-01), Shaw
patent: 5740251 (1998-04-01), Tajima et al.
patent: 5757913 (1998-05-01), Bellare et al.
patent: 6088456 (2000-07-01), McCracken et al.
patent: 6246768 (2001-06-01), Kim
patent: 6463150 (2002-10-01), Moldovyan et al.
patent: 6985591 (2006-01-01), Graunke
patent: 0 792 041 (1997-08-01), None
patent: 1 063 811 (2000-12-01), None
patent: 2 313 989 (1997-12-01), None
patent: WO 01/89138 (2001-11-01), None

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