An Efficient Conversion Scheme for Enhancing Security of Diffie-Hellman-Based Encryption

作     者：ZHANG Xi,HANG Huanhua College of Computer and Software,Shenzhen University,Shenzhen 518060,Guangdong,China 

作者机构：College of Computer and Software Shenzhen University Shenzhen Guangdong China 

出 版 物：《Wuhan University Journal of Natural Sciences》 (武汉大学学报（自然科学英文版）)

年 卷 期：2010年第15卷第5期

页      面：415-421页

学科分类：08[工学] 081201[工学-计算机系统结构] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：Supported by the National Natural Science Foundation ofChina (60903178) 

主　　题：Diffie-Hellman-based encryption adaptive chosenciphertext attack multi-recipient setting randomness-reusing 

摘      要：Nowadays,indistinguishability against adaptive chosen-ciphertext attacks（IND-CCA2） has been widely accepted as a proper security criterion for encryption *** this paper,an efficient conversion is proposed to satisfy the IND-CCA2 *** uses the random oracle methodology and the idea of hybrid encryption,and can enhance any Diffie-Hellman based encryption scheme,which is only one-way under plaintext-checking *** with other existing conversions,this conversion has the advantages of short ciphertext and low computation overhead,especially when it is applied to the multi-recipient setting.