Discrete key generation method and apparatus

Details Discrete key generation method and apparatus Discrete key generation method and apparatus

2008-05-21

2011-10-25

Barron, Jr., Gilberto (Department: 2432)

Cryptography

Key management

Having particular key generator

C380S277000

Reexamination Certificate

active

08045708

ABSTRACT:
A computer enabled secure method and apparatus for generating a cryptographic key, to be used in a subsequent cryptographic process, where the key is to be valid only for example during a specified time period. The method uses a polynomial function which is a function of an input variable such as time, and dynamically computes the key from the polynomial. This is useful for generating decryption keys used for distribution of encrypted content, where the decryption is to be allowed only during a specified time period.

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