发明名称 CONTENT SECURITY LAYER PROVIDING LONG-TERM RENEWABLE SECURITY
摘要 In an exemplary embodiment, digital content is mastered as a combination of encrypted data and data processing operations that enable use in approved playback environments. Player devices (160) having a processing environment compatible with the content's data processing operations are able to decrypt and play the content (150). Players can also provide content with basic functions, such as loading data from media (150), performing network communications, determining playback environment configuration, controlling decryption/playback, and/or performing cryptographic operations using the player's keys (130). These functions allow the content to implement and enforce its own security policies (110). If pirates compromise individual players of content titles, new content can be mastered with new security features that block the old attacks. A selective decryption capability can also be provided, enabling on-the-fly watermark insertion so that attacks can be traced back to a particular player. Features to enable migration from legacy formats are also provided.
申请公布号 WO02079906(A3) 申请公布日期 2003.10.30
申请号 WO2002US10098 申请日期 2002.03.28
申请人 CRYPTOGRAPHY RESEARCH, INC. 发明人 KOCHER, PAUL, C.;JAFFE, JOSHUA, M.;JUN, BENJAMIN, C.;LAREN, CARTER, C.;PEARSON, PETER, K.
分类号 G06Q50/00;G06F1/00;G06Q30/00;G09C1/00;G11B20/00;G11B20/10;G11B20/12;G11B27/00;H04L9/08;H04L9/30;H04N5/91;H04N5/913;H04N21/266;H04N21/41;H04N21/418;H04N21/432;H04N21/4405;H04N21/442;H04N21/4627;H04N21/8355;H04N21/8358 主分类号 G06Q50/00
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