Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
May 10, 2011
Patent Application Number
12040738
Date Filed
February 29, 2008
Patent Primary Examiner
Patent 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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