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:
May. 01, 2012
Filed:
Nov. 15, 2007
Stefan Amann, Holzgerlingen, DE;
Gerhard Banzhaf, Nufringen, DE;
Kenneth W. Boyd, Tucson, AZ (US);
Daniel F. Casper, Poughkeepsie, NY (US);
John R. Flanagan, Poughkeepsie, NY (US);
Jeffrey W. Palm, Rochester, MN (US);
Harry M. Yudenfriend, Poughkeepsie, NY (US);
Stefan Amann, Holzgerlingen, DE;
Gerhard Banzhaf, Nufringen, DE;
Kenneth W. Boyd, Tucson, AZ (US);
Daniel F. Casper, Poughkeepsie, NY (US);
John R. Flanagan, Poughkeepsie, NY (US);
Jeffrey W. Palm, Rochester, MN (US);
Harry M. Yudenfriend, Poughkeepsie, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
An encryption method encrypts a clear text twice using a first encryption engine to produce a first cipher text and a second encryption engine to produce a second cipher text. The method compares the first cipher text with the second cipher text, or compares a checksum of the first cipher text with a checksum of the second cipher text. If the comparison succeeds, the method transmits the data. In some embodiments, the method uses a first instance of an encryption key to produce the first cipher text and a second instance of the encryption key to produce the second cipher text.