基于椭圆曲线密码的分级访问密钥分配方法(英文)  

Key Distribution Scheme Based on Elliptic Curve Cryptography for Hierarchical Access Control

作　　者：胡兵[1] 叶梧[1] 冯穗力[1] 谢明[1] 

机构地区：[1]华南理工大学电子与信息学院,广州510640

出　　处：《科学技术与工程》2006年第18期2849-2852,2857,共5页Science Technology and Engineering

基　　金：广东省工业攻关项目(2003B12224)资助

摘　　要：针对数字电视有条件接收系统中的密钥分配,提出了一种基于椭圆曲线密码的分层访问控制密钥分配方案。该方案可使一个接收组有效地衍生其下属组的接收密钥,方便地实现了增/减接收组、增/减组关系和改变授权密钥等动态访问管理,且只需重新计算一些相关参数而无需改变其他密钥。A key distribution scheme based on elliptic curve cryptography for Conditional Access System （CAS） in Digital TV broadcast is proposed. The proposed scheme ensures that a receive group can efficiently derive secret keys of its Successors. Dynamic access control problems, such as adding/deleting group, adding/ deleting relationships and changing secret keys, are easily solved only need to recompute some relevant parameters without altering others keys 1.

关 键 词：数字电视 有条件接收系统 密钥分配 分层访问控制 椭圆曲线密码 

分 类 号：TN949.197[电子电信—信号与信息处理]