Method and apparatus for software access to a microprocessor ser

Details Method and apparatus for software access to a microprocessor ser Method and apparatus for software access to a microprocessor ser

1996-03-28

1998-08-04

Gregory, Bernarr E.

Cryptography

Cryptanalysis

380 9, 380 21, 380 23, 380 25, 380 49, H04L 900, H04L 932

Patent

active

057906637

ABSTRACT:
A method and apparatus for software to access a microprocessor serial number. Provision of the serial number allows the manufacturer better control over its product and also permits software vendors to register their products. The serial number is encrypted using a pair of encryption keys to prevent unauthorized changes. At least one of the encryption keys is itself encoded to prevent unauthorized access, while permitting software to access the serial number.

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AMD5.sub.K 86 Processor Technical Reference Manual, 1986 Advanced Micro Devices, Inc., pp. 3-29 through 3-31.

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