Simple universal hash for plaintext aware encryption

Details Simple universal hash for plaintext aware encryption Simple universal hash for plaintext aware encryption

2008-01-22

2008-01-22

Sheikh, Ayaz (Department: 2131)

Cryptography

Communication system using cryptography

Time segment interchange

C380S028000, C380S042000, C380S043000, C713S168000, C713S169000, C713S170000, C713S171000, C726S026000, C726S027000, C726S030000

Reexamination Certificate

active

07321659

ABSTRACT:
A simple universal hash apparatus and method include input means for inputting at least one of a plurality of Plaintext blocks into an integrity aware encryption scheme using at least one of two secret keys to obtain a plurality of Ciphertext blocks; Plaintext checksum means for computing a Plaintext checksum value from the said plurality of Plaintext blocks; Ciphertext checksum means for processing said plurality of Ciphertext blocks and a third key to obtain a Ciphertext checksum; and combination means for combining the said Plaintext checksum and the said Ciphertext checksum to obtain the simple universal hash value.

REFERENCES:
patent: 2004/0017913 (2004-01-01), Hawkes et al.
patent: 2005/0074116 (2005-04-01), Hall et al.

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