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. 15, 2006
Filed:
Mar. 28, 2002
Applicants:
Richard W. Heiden, Shelton, CT (US);
David K. Lee, Monroe, CT (US);
Inventors:
Richard W. Heiden, Shelton, CT (US);
David K. Lee, Monroe, CT (US);
Assignee:
Pitney Bowes Inc., Stamford, CT (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 7/06 (2006.01); H04L 1/00 (2006.01); G06F 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method and apparatus for protecting against a replay attack in a database system makes use of customer records including a counter, and freshness records that include the customer counters and a freshness record counter. The counter from the customer records, the customer records in the freshness records, and the freshness record counter are used by a cryptographic device together with a cryptographic device counter to verify the freshness of the customer record prior to updating the customer record with respect to a recent transaction.