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. 31, 2012
Filed:
Jun. 05, 2008
Applicant:
Kazuomi Oishi, Yokohama, JP;
Inventor:
Kazuomi Oishi, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Encrypted text data cgenerated by encrypting plaintext data using an encryption key, verification data having a size smaller than the encrypted text data c, and encrypted text data cgenerated by encrypting the verification data using the encryption key are acquired (S). It is checked if a decryption result of the encrypted text data cusing a decryption key matches the verification data (S). If it is determined that the two data match, the encrypted text data cis decrypted using the decryption key (S).