Portable terminal

Details Portable terminal Portable terminal

2000-08-31

2009-06-09

Moise, Emmanuel L (Department: 2437)

Cryptography

Key management

Having particular key generator

C380S285000, C380S264000, C705S043000

Reexamination Certificate

active

07545930

ABSTRACT:
A portable terminal (10) for encrypting information is described. The terminal (10) generates a new key for each transaction, where the new key is generated using one or more properties of the terminal (10). The one or more properties are variable and may include the history of usage of the terminal, and/or the date and time settings. The terminal (10) may generate a unique challenge in addition to the new key so that a unique challenge can be issued for each transaction. A method of encrypting information in a portable terminal, a method of communicating encrypted information between a portable terminal and a self-service terminal, and a transaction system comprising a self-service terminal (52) and a portable terminal (10) are also described.

REFERENCES:
patent: 4529870 (1985-07-01), Chaum
patent: 5278905 (1994-01-01), McNair
patent: 5878138 (1999-03-01), Yacobi
patent: 6038318 (2000-03-01), Roden
patent: 6980660 (2005-12-01), Hind et al.
patent: 2002/0062284 (2002-05-01), Kawan
patent: 0455064 (1991-11-01), None
patent: 2329499 (1999-03-01), None
patent: 9522793 (1995-08-01), None
patent: 9704395 (1997-02-01), None
patent: 9840853 (1998-09-01), None
patent: 9858322 (1998-12-01), None
Schneier, Bruce, Applied Cryptography 1997, John Wiley & Sons, Inc., 2nded., pp. 62 and 63.
Handbook of Applied Cryptography, Menezes et al, CRC Press, 1997.
Menezes et al, “Handbook of Applied Cryptography”, CRC Press 1996, pp. 170-171.
Menezes et al, “Handbook of Applied Cryptography,” 1997, pp. 170-172, 494, 552.

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