Secure Key Management for Flexible Digital Rights Management of Scalable Codestreams

Bin B. Zhu, Min Feng, Shipeng Li
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引用次数: 4

Abstract

The key management for multi-type, multi-level scalable access control of a fine granularity scalability codestream is addressed in this paper. We first present an efficient partially ordered set (poset) to represent scalable access control so that any access control schemes for a poset can be applied and a single secret key is needed to transfer to a user. We then present a secure key scheme modified from our previous scalable access key scheme for the resulting poset. The key scheme is based on the group Diffie-Hellman key agreement, and is secure
安全密钥管理灵活的数字权限管理的可扩展码流
本文研究了细粒度可扩展码流的多类型、多级可扩展访问控制的密钥管理问题。我们首先提出了一个有效的偏序集(poset)来表示可伸缩的访问控制,使得任意的访问控制方案都可以应用于偏序集,并且只需要一个密钥就可以传递给用户。然后,我们提出了一种安全密钥方案,该方案是在之前的可扩展访问密钥方案的基础上修改的。该密钥方案基于组Diffie-Hellman密钥协议,具有安全性
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