Cryptography – Key management – Having particular key generator
Patent
1996-06-13
1999-04-06
Decady, Albert
Cryptography
Key management
Having particular key generator
380 4, 380 30, 380 36, H04L 900
Patent
active
058928995
ABSTRACT:
In accordance with a first aspect of the present invention, a security sensitive program that operates with a secret is made tamper resistant by distributing the secret in space as well as in time. In accordance with a second aspect of the present invention, a security sensitive program is made tamper resistant by obfuscating the program. In accordance with a third aspect of the present invention, a security sensitive application is made tamper resistant by isolating its security sensitive functions, and making the isolated security sensitive functions tamper resistant by distributing the secrets of the security sensitive functions in time as well as in space, and/or obfuscating the security sensitive functions. In one embodiment where obfuscation is employed, the pseudo-randomly selected pattern(s) of mutations is (are) unique for each installation. In accordance with a fourth aspect of the present invention, a security sensitive system with security sensitive applications is made further tamper resistant by deploying an interlocking trust mechanism. In accordance with a fifth aspect of the present invention, a content industry association, in conjunction with content manufacturers, content reader manufacturers, and content player manufacturers of the industry jointly implement a coordinated encryption/decryption scheme, with the player apparatus manufactured by the content player manufacturers employing playing software that include tamper resistant decryption functions.
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Virus Detection and Elimination by Rune Skardhamar, copyright 1996 by Academic Press, Inc., pp. 171 to 182.
Aucsmith David
Graunke Gary
De'cady Albert
Intel Corporation
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