面向多服务的基于大整数分解困难问题的叛逆者追踪方案

张学军; 余国林; 周利华

doi:10.3724/SP.J.1146.2005.01236

面向多服务的基于大整数分解困难问题的叛逆者追踪方案

doi: 10.3724/SP.J.1146.2005.01236

张学军^{①;余国林},
余国林,
周利华

基金项目:

甘肃省教育厅科研项目(0601B-08), 中国博士后科学基金资助项目(20060400035)和国家自然科学基金(60372046)资助课题

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出版历程
- 收稿日期: 2005-09-30
- 修回日期: 2006-03-27
- 刊出日期: 2007-05-19

A Multi-service Oriented Traitor Tracing Scheme on LIFP

摘要

摘要: 该文提出了一种面向多服务的基于大整数分解困难问题的叛逆者追踪方案。该方案的主要思想是基于大整数分解困难问题构造等式，并引进参数传递服务密钥，解密时利用上述等式和服务密钥可获得会话密钥。与现有两种方案相比，新方案具有多服务、黑盒追踪、密文长度是常量、增加用户或撤销用户以及前向安全性和后向安全性等优点，整体性能好于现有两种方案。
- 叛逆者追踪;大整数分解问题;多服务;黑盒追踪;前向安全性;后向安全性
Abstract: A multi-service traitor tracing scheme on LIFP(Large Integer Factoring Problem) is proposed，the essential idea of which is that an equation based on LIFP is constructed and a parameter is introduced to transfer service private-key. In decryption procedure, the session key can be obtained by the equation and the service private-key. Compared with the existing two traitor tracing schemes, this scheme has many advantages such as multi-service, black-box traitor tracing, ciphertexts of constant size, adding or revoking users, forward-security and backward-security. Furthermore, its whole capabilities are better than that of the existing ones.

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参考文献(1)

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