| 多域环境下基于代理重加密的电子文档分发协议 |
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| 引用本文： | 闫玺玺,马兆丰,杨义先,钮心忻.多域环境下基于代理重加密的电子文档分发协议[J].北京邮电大学学报,2012,35(5):81-84. |
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| 作者姓名： | 闫玺玺 马兆丰 杨义先 钮心忻 |
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| 作者单位： | 北京邮电大学信息安全中心,北京100876;北京国泰信安科技有限公司,北京100086;河南理工大学计算机科学与技术学院,河南焦作454003;北京邮电大学信息安全中心,北京100876;北京国泰信安科技有限公司,北京100086 |
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| 基金项目： | 国家重点基础研究发展计划项目(2007CB311203);国家自然科学基金项目(60803157,90812001) |
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| 摘 要： | 针对多域环境下电子文档安全管理,提出一种基于代理重加密机制的电子文档分发协议.该协议中引入代理服务器,由文档拥有者将数据加密后发送给半可信服务端,服务端对数据密文进行安全存储,同时对数据密文重加密后发送给用户.该方案避免了服务端对数据密文解密后进行二次加密,降低了服务端对电子文档管理的复杂度,同时采用密文方式存储,以防止服务器被恶意攻击后敏感数据泄露.与其他协议对比结果表明,新方案显著降低了代理重加密算法的计算复杂度,同时提高了加解密效率,保持了敏感数据机密性.
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| 关 键 词： | 代理重加密 域分发 电子文档 |
| 收稿时间： | 2011-09-14 |
A Distribution Protocol Based on Proxy Re-Encryption in Domain Environment of E-Document Management |
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| YAN Xi-xi,MA Zhao-feng,YANG Yi-xian,NIU Xin-xin.A Distribution Protocol Based on Proxy Re-Encryption in Domain Environment of E-Document Management[J].Journal of Beijing University of Posts and Telecommunications,2012,35(5):81-84. |
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| Authors: | YAN Xi-xi MA Zhao-feng YANG Yi-xian NIU Xin-xin |
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| Affiliation: | 1. Information Security Center, Beijing University of Posts and Telecommunications2. Beijing National Security Science and Technology Company Limited3. Computer Science and Technology, Henan Polytechnic University |
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| Abstract: | In view of the domain environment in E-documents management, an interoperable cross-domain distribution protocol for E-document is proposed. Based on proxy re-encryption, the scheme uses a semi-trusted entity called proxy server to re-encrypt the document ciphertext without decrypting the ciphertext, such that only users can decrypt the data with his private key. Compared with the existing system, the scheme relieves the server from intense encryption/decryption processing, and achieves reliable decentralized encryption/decryption with good scalability and efficiency. |
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| Keywords: | re-encryption multi-domain E-documents distribution |
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