Certificateless Key-Insulated Encryption: Cryptographic Primitive for Achieving Key-Escrow Free and Key-Exposure Resilience

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• 关键词：Bilinear pairing ; Certificateless cryptography ; Key ; insulated
• 刊名：Lecture Notes in Computer Science
• 出版年：2016
• 出版时间：2016
• 年：2016
• 卷：9784
• 期：1
• 页码：387-395
• 全文大小：169 KB
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• 作者单位：Libo He (18)
  Chen Yuan (18)
  Hu Xiong (18)
  Zhiguang Qin (18)
  
  18. School of Information and Software Engineering, University of Electronic Science and Technology of China, Chengdu, 610054, Sichuan, China
  
• 丛书名：Big Data Computing and Communications
• ISBN：978-3-319-42553-5
• 刊物类别：Computer Science
• 刊物主题：Artificial Intelligence and Robotics
  Computer Communication Networks
  Software Engineering
  Data Encryption
  Database Management
  Computation by Abstract Devices
  Algorithm Analysis and Problem Complexity
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1611-3349
• 卷排序：9784

文摘

Certificateless encryption (CLE) alleviates the heavy certificate management in traditional public key encryption and the key escrow problem in the ID-based encryption simultaneously. Current CLE schemes assumed that the user’s secret key is absolutely secure. Unfortunately, this assumption is too strong in case the CLE is deployed in the hostile setting and the leakage of a secret key is inevitable. In this paper, we present a new concept called a certificateless key-insulated encryption scheme (CL-KIE). We argue that this is an important cryptographic primitive that can be used to achieve key-escrow free and key-exposure resilience. We also present an efficient CL-KIE scheme based on bilinear pairing. After that, the security of our scheme is proved under the Bilinear Diffie-Hellman assumption in the random oracle model.