Hong Hanshu, Sun Zhixin
Key Lab of Broadband Wireless Communication and Sensor Network Technology, Ministry Education, Nanjing University of Posts and Telecommunications, Nanjing, China.
Springerplus. 2016 May 17;5:644. doi: 10.1186/s40064-016-2286-2. eCollection 2016.
Attribute based encryption (ABE) and attribute based signature (ABS) provide flexible access control with authentication for data sharing between users, but realizing both functions will bring about too much computation burden. In this paper, we combine the advantages of CP-ABE with ABS and propose a ciphertext policy attribute based signcryption scheme. In our scheme, only legal receivers can decrypt the ciphertext and verify the signature signed by data owner. Furthermore, we use linear secret sharing scheme instead of tree structure to avoid the frequent calls of recursive algorithm. By security and performance analysis, we prove that our scheme is secure as well as gains higher efficiency.
基于属性的加密（ABE）和基于属性的签名（ABS）为用户之间的数据共享提供了具有认证功能的灵活访问控制，但同时实现这两种功能会带来过多的计算负担。在本文中，我们结合了CP-ABE和ABS的优点，提出了一种基于密文策略属性的签密方案。在我们的方案中，只有合法接收者才能解密密文并验证数据所有者签署的签名。此外，我们使用线性秘密共享方案代替树结构，以避免递归算法的频繁调用。通过安全性和性能分析，我们证明了我们的方案是安全的，并且具有更高的效率。
