Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Particular communication authentication technique
Reexamination Certificate
2011-04-26
2011-04-26
Arani, Taghi T. (Department: 2438)
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Particular communication authentication technique
C713S185000, C713S193000, C726S009000, C726S020000, C726S027000, C725S030000, C725S006000, C902S001000, C902S002000, C902S003000, C902S004000, C902S005000
Reexamination Certificate
active
07934096
ABSTRACT:
Systems, methods, and technologies for configuring a conventional smart card and a client machine, and for performing a smart card authorization using the configured smart card and client. Further, the combination of methods provides for mutual authentication—authentication of the client to the user, and authentication of the user to the client. The authentication methods include presenting a specified token to the user sufficient to authenticate the client to the user and thus protect the user-provided PIN. Security is strengthened by using an integrity key based on approved client system configurations. Security is further strengthened by calculating a PIN′ value based on a user-specified PIN and a modifier and using the PIN′ value for unlocking the smart card.
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Bays Valerie Kathleen
Ellison Carl M.
Holt Erik Lee
Mysore Shivaram H.
Thom Stefan
Arani Taghi T.
Collins L. Alan
Collins & Collins Incorporated
Microsoft Corporation
Rahman Mohammad L
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