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:
Mar. 31, 2009
Filed:
Jul. 23, 2003
Ramarathnam Venkatesan, Redmond, WA (US);
Peter L. Montgomery, San Rafael, CA (US);
Ramarathnam Venkatesan, Redmond, WA (US);
Peter L. Montgomery, San Rafael, CA (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
An implementation of a digital signature technique, described herein, generates, and another implementation of a digital signature technique, also described herein, validates, a hidden plaintext or ciphertext message wherein one or more portions of that message have another ciphertext message implicitly embedded therein. In other implementations, two or more portions of that message have another ciphertext message implicitly embedded therein. This abstract itself is not intended to limit the scope of this patent. The scope of the present invention is pointed out in the appending claims.