山西大学学报（自然科学版）2018，Vol.41Issue(1)：120-127,8.DOI:10.13451/j.cnki.shanxi.univ(nat.sci.).2018.01.008
一种可外包解密的密文策略属性基加密方案
A Ciphertext-Policy Attribute-Based Encryption Scheme with Outsourcing Decryption
摘要
Abstract
Attribute-based encryption system can share and manage sensitive data better,and meet the demand on many situations in life.However,there is the drawback which it needs a lot of computing of bilinear map and will bring enormous burden of computing.With development of the cloud computing and cloud storage,it creates the opportunity for outsourcing decryption technology applying to the attribute based encryption scheme.Cloud server performs the work that needs a great amount of calculation when the user need to decrypt.When the user gets the middle ciphertext,he uses own secret key and the middle ciphertext to decrypt the target ciphertext.This will reduce the burden of computing by cloud computing.This paper presents a ciphertext-policy attribute-based encryption scheme with outsourcing decryption method,and proves the system fully secure by dual system encryption techniques in the standard model.关键词
密文策略属性基加密/外包解密/双系统加密/标准模型Key words
ciphertext-policy attribute-based encryption/outsourcing decryption/dual system encryption/in the standard model分类
信息技术与安全科学引用本文复制引用
郭丽峰,王晶..一种可外包解密的密文策略属性基加密方案[J].山西大学学报（自然科学版）,2018,41(1):120-127,8.基金项目
国家自然科学基金(61202365) （61202365）
山西省回国留学人员科研资助项目(2015-015) （2015-015）
