The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Feb. 27, 2007

Filed:

Dec. 22, 2000
Applicants:

Toru Sorimachi, Tokyo, JP;

Toshio Tokita, Tokyo, JP;

Inventors:

Toru Sorimachi, Tokyo, JP;

Toshio Tokita, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04K 1/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

To encrypt another piece of data during encrypting process of a certain piece of data, a memoryis provided in parallel with a feedback linewhich feeds back data from an encrypting moduleusing an encryption key K to a selectorWhen an interrupt IT for processing plaintext block data Nis generated while plaintext block data Mis processed, ciphertext block data Cat timing of generation of the interrupt IT is made to be stored in a registerThe ciphertext block data Cstored in the memoryis made to be selected by the selectorat timing of completion of processing the plaintext block data N, and processing the plaintext block data Mis started.


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