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.
Patent No.:
Date of Patent:
Jul. 22, 2014
Filed:
Aug. 25, 2009
Taizo Shirai, Kanagawa, JP;
Kyoji Shibutani, Tokyo, JP;
Shiho Moriai, Kanagawa, JP;
Toru Akishita, Tokyo, JP;
Tetsu Iwata, Aichi, JP;
Taizo Shirai, Kanagawa, JP;
Kyoji Shibutani, Tokyo, JP;
Shiho Moriai, Kanagawa, JP;
Toru Akishita, Tokyo, JP;
Tetsu Iwata, Aichi, JP;
Sony Corporation, Tokyo, JP;
Abstract
A data converter for generating a hash value for message data is disclosed. The data converter executes a data conversion process, which includes compression-function execution sections and process sequences in which divided data blocks constituting message data are processed in parallel. Each compression-function execution section performs a process, using a message scheduling section and a chaining variable processing section. The message scheduling section receives a corresponding divided data block of the message data and performs a message scheduling process. The chaining variable processing section receives an output from the message scheduling section and an intermediate value output from a preceding processing section, and generates output data, which has the same number of bits as in the intermediate value. The compression-function execution sections may use one or more message scheduling sections and chaining variable processing sections.