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. 18, 2014
Filed:
Jun. 06, 2007
Robert A. Cordery, Danbury, CT (US);
Matthew J. Campagna, Ridgefield, CT (US);
Bertrand Haas, New Haven, CT (US);
Bradley R. Hammell, Fairfield, CT (US);
Leon A. Pintsov, West Hartford, CT (US);
Frederick W. Ryan, Jr., Oxford, CT (US);
Robert A. Cordery, Danbury, CT (US);
Matthew J. Campagna, Ridgefield, CT (US);
Bertrand Haas, New Haven, CT (US);
Bradley R. Hammell, Fairfield, CT (US);
Leon A. Pintsov, West Hartford, CT (US);
Frederick W. Ryan, Jr., Oxford, CT (US);
Pitney Bowes Inc., Stamford, CT (US);
Abstract
Methods and systems for verification of indicia that do not require key management systems, and in which revocation of key pairs is easily performed without adding costs to the verification process are provided. Indicia are generated and authenticated utilizing an identity-based encryption (IBE) scheme. A key generating authority generates a private key for a PSD, distributes the private key securely to the PSD, and provides public information for use by a verification service when verifying cryptographic digital signatures generated with the private key. The corresponding public key is a string consisting of PSD information that is provided as part of the indicium. The verification service can verify the signature of each indicium by obtaining the public key string from the indicium, and utilizing the key generating authority's public information.