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:
Aug. 22, 2006
Filed:
Jan. 27, 2000
Applicants:
Ernst-michael Hamann, Boeblingen, DE;
Jutta Kreyss, Stuttgart, DE;
Narayanan Vasudevan, Gaithersburg, MD (US);
Inventors:
Ernst-Michael Hamann, Boeblingen, DE;
Jutta Kreyss, Stuttgart, DE;
Narayanan Vasudevan, Gaithersburg, MD (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 9/00 (2006.01); H04K 1/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to the generation of digital signatures by the use of which the legally binding nature of a digital signature is enhanced. For this, an expanded digital signature is created which, in addition to the hash, contains other information, in particular information identifying the hardware and software environment used in generating the signature.