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Title:
AES ENCRYPTION CIRCUIT
Document Type and Number:
Japanese Patent JP2008040244
Kind Code:
A
Abstract:

To obtain an advanced encryption standard (AES) encryption circuit which can cope with higher speed for operation frequency.

A first flip-flop 4 for temporarily storing the conversion result of a ShiftRows conversion circuit 3 is installed. A MixColumns conversion circuit 5 includes a second flip-flop which performs mixing conversion on the output of the first flip-flop 4 in column direction, and which temporarily stores the conversion result. Accordingly, round processing by a SubBytes conversion circuit on an AddRoundKey conversion circuit is turned into pipeline.


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Inventors:
TAKAGAKI HITOSHI
Application Number:
JP2006215851A
Publication Date:
February 21, 2008
Filing Date:
August 08, 2006
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
G09C1/00
Domestic Patent References:
JPH10275079A1998-10-13
Attorney, Agent or Firm:
Hideaki Tazawa
Konobu Kato
Hamada Hatsune



 
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