accountable authority identity-based encryption with public traceability
文献类型：会议论文
| 作者 | Lai Junzuo ; Deng Robert H. ; Zhao Yunlei ; Weng Jian |
| 出版日期 | 2013 |
| 会议名称 | Cryptographers' Track at the RSA Conference 2013, CT-RSA 2013 |
| 会议日期 | February 25, 2013 - March 1, 2013 |
| 会议地点 | San Francisco, CA, United states |
| 关键词 | Algorithms Concrete construction |
| 页码 | 326-342 |
| 中文摘要 | At Crypto'07, Goyal introduced the notion of accountable authority identity-based encryption (A-IBE) in order to mitigate the inherent key escrow problem in identity-based encryption, and proposed two concrete constructions. In an A-IBE system, if the private key generator (PKG) distributes a decryption key or produces an unauthorized decryption box for a user maliciously, it runs the risk of being caught and sued in the court of law with the help of a tracing algorithm. Subsequent efforts focused on constructions of A-IBE schemes with enhanced security. In these A-IBE constructions, the tracing algorithm needs to take a user's decryption key as input. If the user lost his key or is deliberately uncooperative in court, then we cannot implicate the PKG or the user. An interesting open problem left by Goyal et al. at CCS'08 is to consider the possibility of tracing a decryption box using only a public tracing key, or with the assistance of a tracing authority. In this paper, we address this problem positively. We first extend the original model of A-IBE to accommodate public traceability, and then propose an A-IBE scheme in the new model. To the best of our knowledge, the proposed scheme is the first A-IBE with public traceability. © 2013 Springer-Verlag. |
| 英文摘要 | At Crypto'07, Goyal introduced the notion of accountable authority identity-based encryption (A-IBE) in order to mitigate the inherent key escrow problem in identity-based encryption, and proposed two concrete constructions. In an A-IBE system, if the private key generator (PKG) distributes a decryption key or produces an unauthorized decryption box for a user maliciously, it runs the risk of being caught and sued in the court of law with the help of a tracing algorithm. Subsequent efforts focused on constructions of A-IBE schemes with enhanced security. In these A-IBE constructions, the tracing algorithm needs to take a user's decryption key as input. If the user lost his key or is deliberately uncooperative in court, then we cannot implicate the PKG or the user. An interesting open problem left by Goyal et al. at CCS'08 is to consider the possibility of tracing a decryption box using only a public tracing key, or with the assistance of a tracing authority. In this paper, we address this problem positively. We first extend the original model of A-IBE to accommodate public traceability, and then propose an A-IBE scheme in the new model. To the best of our knowledge, the proposed scheme is the first A-IBE with public traceability. © 2013 Springer-Verlag. |
| 收录类别 | EI |
| 会议录 | Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
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| 语种 | 英语 |
| ISSN号 | 0302-9743 |
| ISBN号 | 9783642360947 |
| 源URL | [http://ir.iscas.ac.cn/handle/311060/15907]  |
| 专题 | 软件研究所_软件所图书馆_会议论文 |
| 推荐引用方式 GB/T 7714 | Lai Junzuo,Deng Robert H.,Zhao Yunlei,et al. accountable authority identity-based encryption with public traceability[C]. 见:Cryptographers' Track at the RSA Conference 2013, CT-RSA 2013. San Francisco, CA, United states. February 25, 2013 - March 1, 2013. |
入库方式： OAI收割
来源：软件研究所
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