Systems and methods for protecting data secrecy and integrity
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United States of America Patent
Stats
-
Jun 6, 2006
Grant Date -
May 19, 2005
app pub date -
Dec 2, 2004
filing date -
Dec 22, 1999
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A technique for integrating message authentication with encryption and decryption is disclosed. Intermediate internal states of the decryption operation are used to generate a validation code that can be used to detect manipulation of the encrypted data. The technique is optimized with respect to processing time, execution space for code and runtime data, and buffer usage. The technique is generally applicable to a variety of block ciphers, including TEA, Rijndael, DES, RC5, and RC6.
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