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Summary: Content Protection for Optical Media
Content Protection for Optical Media
A Comparison of Self-Protecting Digital Content and AACS
Independent Security Evaluators
www.securityevaluators.com
May 3, 2005
Copyright © 2005 Independent Security Evaluators, LLC
Independent Security Evaluators
Content Protection for Optical Media 2
Content Protection for Optical Media
Content Protection for Optical Media 3
Executive Summary
This report details the findings of Independent Security Evaluators in evaluating the
Cryptography Research Inc. Self-Protecting Digital Content (SPDC) specification.
Our evaluation considered VM specification version 1.0b and Interface Specification
0.95a. We also examined the integration of SPDC with the Advanced Access Con-
tent System (AACS) as defined by the AACS public specification revision 0.90
(dated April 14, 2005), along with supplemental slides and materials. We first note
several flaws in the current version of the AACS specification, and further examine
the implications of device compromise on the security offered by AACS. We con-
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