Title :
A Novel Hybrid Encryption Scheme against Adaptive Chosen Ciphertext Attack
Author :
Qi, Zhifeng ; Qing, Sihan ; Yang, Yixian ; Cheng, Guanghui
Author_Institution :
Beijing Univ. of Posts & Telecommun., Beijing
Abstract :
Many efficient CCA2-secure hybrid encryption schemes have been proposed, but their securities are based on too strong assumptions. It would be preferable to base a security proof on a weaker assumption, so we describe a practical hybrid encryption scheme based on the weaker LDDH assumption, and in the standard model prove to be CCA2-secure if the LDDH assumption is true.
Keywords :
cryptography; CCA2-secure hybrid encryption schemes; adaptive chosen ciphertext attack; chosen ciphertext attack; encryption scheme; security proof; Computational intelligence; Information security; Laboratories; Public key; Public key cryptography; Read only memory; Standards development; Telecommunication switching;
Conference_Titel :
Computational Intelligence and Security Workshops, 2007. CISW 2007. International Conference on
Conference_Location :
Harbin
Print_ISBN :
978-0-7695-3073-4
DOI :
10.1109/CISW.2007.4425619
