Invention Grant
- Patent Title: Secure PIN management of a user trusted device
- Patent Title (中): 用户可信设备的安全PIN管理
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Application No.: US12783210Application Date: 2010-05-19
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Publication No.: US08423783B2Publication Date: 2013-04-16
- Inventor: Peter Buhler , Harold D. Dykeman , Thomas Eirich , Matthias Kaiserswerth , Thorsten Kramp
- Applicant: Peter Buhler , Harold D. Dykeman , Thomas Eirich , Matthias Kaiserswerth , Thorsten Kramp
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agent Francis Lammes; Stephen J. Walder, Jr.; Eustus D. Nelson
- Priority: EP09177384 20091127
- Main IPC: G06F21/00
- IPC: G06F21/00 ; G06F17/30
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.
Public/Granted literature
- US20110131639A1 Secure PIN Management of a User Trusted Device Public/Granted day:2011-06-02
Information query
