Method and apparatus of enciphering and deciphering data...

Details Method and apparatus of enciphering and deciphering data... Method and apparatus of enciphering and deciphering data...

2002-01-04

2008-10-07

Moise, Emmanuel L (Department: 2137)

Cryptography

Key management

Key distribution

C380S281000, C705S051000, C713S153000, C713S165000, C726S001000

Reexamination Certificate

active

07433474

ABSTRACT:
On a recording medium, first information obtained by enciphering data with the first key and second information obtained by enciphering the first key with each of the predetermined second keys are recorded. A deciphering method is characterized by comprising the steps of inputting the first and second information, deciphering the first key using at least one of the second keys, determining by a specific method that the obtained first key is correct, and then deciphering the data using the first key to obtain the data.

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