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. 16, 2013
Filed:
May. 19, 2010
Peter Buhler, Horgen, CH;
Harold D. Dykeman, Richterswil, CH;
Thomas Eirich, Waedenswil, CH;
Matthias Kaiserswerth, Richterswil, CH;
Thorsten Kramp, Kilchberg, CH;
Peter Buhler, Horgen, CH;
Harold D. Dykeman, Richterswil, CH;
Thomas Eirich, Waedenswil, CH;
Matthias Kaiserswerth, Richterswil, CH;
Thorsten Kramp, Kilchberg, CH;
International Business Machines Corporation, Armonk, NY (US);
Abstract
A mechanism is provided for secure PIN management of a user trusted device. A user trusted device detects a memory card coupled to the user trusted device. The user trusted device receives user input of an external PIN (ext_PIN). The user trusted device identifies a key (K) associated with the external PIN, wherein the key is stored in the persistent memory. The user trusted device computes a card PIN (card_PIN) using a function (f) and the key as stored on the persistent memory, wherein the card PIN is computed using the following equation: card_PIN=f(K, ext_PIN). The user trusted device unlocks the memory card using the card PIN, thereby forming an unlocked memory card.