计算机应用研究2016，Vol.33Issue(8)：2420-2424,5.DOI:10.3969/j.issn.1001-3695.2016.08.040
不可信更新的前向安全公钥加密方案：安全性模型和构造
Forward-secure public-key encryption scheme with untrusted update:security model and constructions
摘要
Abstract
The proposed forward-secure public-key encryption scheme with untrusted update has no provable security,so there is doubt about the security of the proposed schemes.This paper extended the forward-secure public-key encryption scheme and proposed the provable secure forward-secure public-key encryption scheme with untrusted update.It presented the definition of forward-secure public-key encryption scheme with untrusted update.According to the definition of scheme,it proposed the for-ward-secure public-key encryption scheme with untrusted update using bilinear mapping and efficient symmetric encryption scheme,and proved the security of the scheme based on random oracle.Through analysis,the proposed scheme is practicality as it has constant size ciphertext,constant size of private key,constant overhead of encryption and decryption algorithms,con-stant overhead of key update algorithm.关键词
前向安全/密钥泄露/公钥加密/可证明安全/不可信更新Key words
forward-secure/key leakage/public-key encryption/improved security/untrasted update分类
信息技术与安全科学引用本文复制引用
张秀洁,许春香..不可信更新的前向安全公钥加密方案：安全性模型和构造[J].计算机应用研究,2016,33(8):2420-2424,5.基金项目
省部级学科平台开放课题资助项目（szjj2015-054）；潍坊学院2015年博士科研基金资助项目 （）
