一个指定验证者的基于身份可搜索认证加密方案

A designated tester identity-based searchable authenticated encryption scheme

可搜索加密是实现密文检索的重要密码学工具。在强安全模型下提出一个新的指定验证者的基于身份可搜索认证加密方案并在标准模型中证明了其安全性。由于新方案不使用双线性对和哈希到点两种常用高成本运算,与现有同类方案相比,新方案的运算成本更低,因此更符合实际需要。

Searchable encryption is an important cryptographic tool for ciphertext retrieval.This paper proposes a new designated tester identity-based searchable authenticated encryption scheme under the enhanced security model and proves its security in the standard model.Since the new scheme does not use the two expensive operations(i.e.,bilinear pairing and hash to point operations),compared with the existing similar schemes,the new scheme is more efficient and more in line with actual needs.