标准模型下高效的基于身份的加密方案  

Efficient Scheme Based on Identity Encryption in Standard Model

作　　者：李云[1] 张永平[2] 

机构地区：[1]宿迁高等师范学校,江苏宿迁223800 [2]中国矿业大学计算机学院,江苏徐州221116

出　　处：《成都大学学报（自然科学版）》2014年第3期242-246,共5页Journal of Chengdu University（Natural Science Edition）

基　　金：江苏省教育厅自然科学基金(14KJD520006)资助项目

摘　　要：基于身份的加密是一类很重要的公钥加密.给出了一个高效的基于身份的加密方案,提出的方案在标准模型下是针对选择密文攻击完全安全的,并运用线性无关的思路基于q-ABDHE假设证明了方案的安全性.方案具有高效性、公钥参数较短及配对计算较少的特点.The identity-based encryption is an important type of public key encryption.In the past ten years,cryptography researchers put a lot of efforts on identity-based encryption,and a lot of research works have been obtained.At present,the best model is the one in which security is obtained against chosen ciphertext attacks in the standard model.This paper gives a practical identity-based encryption scheme.The proposed scheme is fully secure against the chosen ciphertext attacks in the standard model.Based on q-ABDHE hypothesis,we use the linearly independent thought to prove the security of the scheme.The proposed scheme has the advantages of high efficiency,shorter parameters of public key and less pairing computation.

关 键 词：基于身份加密 标准模型 双线性映射 q-ABDHE假设 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]