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:
Apr. 11, 2006
Filed:
Apr. 01, 2002
John R. Michener, Sammamish, WA (US);
Paul F. Ryan, Leesburg, VA (US);
John R. Michener, Sammamish, WA (US);
Paul F. Ryan, Leesburg, VA (US);
Other;
Abstract
A trusted display () of a trusted authorization device (TAD) () displays on a trusted display () first information about a transaction to be authorized by a user () using a trusted keypad (). The TAD () generates () a random number (R); generates () second information from the first information, the random number (R) and a first identification code (TADID-A) of the TAD (); generates () a signature of the second information using a first encryption process; egnerates () a set of session keys (Ks, Ks, Ks) by a second encryption process responsive to the random number (R) and a set of stored working keys (K, K, K); and generates () third information by encrypting the second information and the signature using a third encryption process responsive to the set of session keys (Ks, Ks, Ks). A dat structure () is formed comprising the random numer (R), the first identification code (TADID-A), and the third information; and communicated () from the TAD () to the client () to a host server () for verification by a verification decryption server ().