On-line randomness test for detecting irregular pattern

Details On-line randomness test for detecting irregular pattern On-line randomness test for detecting irregular pattern

2007-11-13

2007-11-13

Moazzami, Nasser (Department: 2136)

Cryptography

Key management

Key escrow or recovery

C463S022000

Reexamination Certificate

active

10081908

ABSTRACT:
The present invention is a method and apparatus for testing random numbers generated by a random number generator in real time. As a series of random numbers are generated, a number of bits that have the value of a predetermined logic value at a specific, predefined range of intervals is determined and then applied to an exponential averaging operation (A). Thereafter, it is determined whether the generated random numbers are predictable by comparing the output of all said exponential operations to their predetermined acceptance range.

REFERENCES:
patent: 5675649 (1997-10-01), Brennan et al.
patent: 5873781 (1999-02-01), Keane
Werner Schindler, “Efficient Online Tests for True Random Number Generators”, Cryptographic Hardware and Embedded Systems, vol. 2162, May 14, 2001, pp. 103-117.
National Institute of Standards and Technology, “Random Number Generation and Testing”, Internet, Dec. 18, 2000, pp. 1-2.

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