Cryptography – Equipment test or malfunction indication
Patent
1998-08-10
2000-04-04
Cangialosi, Salvatore
Cryptography
Equipment test or malfunction indication
380 30, H04L 900
Patent
active
060470666
ABSTRACT:
A system (100) and method of improving activation security allows a remote device (104) to identify that there is a difference between a first signal transmitted by a central site (102) and a first signal received by the remote device. A derived number is used. The derived number can be displayed to the user for verbal verification by the user, or the derived number can be used internally of the remote device, or the central site, for verification that is transparent to the user. A significant amount of security is added without substantially altering the communication protocol.
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patent: 5793866 (1998-08-01), Brown et al.
Brown Daniel Peter
Finkelstein Louis David
Pennypacker Frank C.
Cangialosi Salvatore
Motorola Inc.
Vaas Randall S.
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