Data processing: financial – business practice – management – or co – Business processing using cryptography – Secure transaction
Reexamination Certificate
2007-01-23
2007-01-23
Abdi, Kambiz (Department: 3621)
Data processing: financial, business practice, management, or co
Business processing using cryptography
Secure transaction
C705S001100, C705S050000, C705S064000, C713S180000, C716S030000, C716S030000
Reexamination Certificate
active
10164490
ABSTRACT:
An apparatus for private personal identification number (PIN) management comprises a memory and a PIN comparator in communication with the memory. The PIN comparator is configured to ascertain a first delay period of a preceding PIN. The first delay period is greater than zero if the preceding PIN does not match a validated PIN and the first delay period equals zero if the preceding PIN matches the validated PIN. The PIN comparator is further configured to receive a current PIN after at least the first delay period and delay for a second delay period if the current PIN does not match the validated PIN. The second delay period is greater than the first delay period.
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Abdi Kambiz
Gunnison Forrest
Gunnison McKay & Hodgson, L.L.P.
Sun Microsystems Inc.
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