Title :
A New Efficient Certificateless Signcryption Scheme
Author :
Wu, Chen-huang ; Chen, Zhi-xiong
Author_Institution :
Dept. of Math., Putian Univ., Putian
Abstract :
Certificateless public key cryptosystem overcomes the problem of the certificate management in the certificate-based public key cryptosystem and the inherent key escrow problem in the identity-based public key cryptosystem. Signcryption is a cryptographic primitive that combines both the functions of digital signature and public key encryption in a logical single step with lower computational costs and communication overheads than the traditional signature then encryption approach. In this paper, we proposed a new Certificateless Signcryption scheme which is more efficient than all the schemes available. Our scheme is based on the CDH and DL assumption. Moreover, we introduce a new character, i.e., public verifiability, into certificateless signcryption scheme.
Keywords :
digital signatures; public key cryptography; certificate management; certificate-based public key cryptosystem; certificateless public key cryptosystem; certificateless signcryption scheme; cryptographic primitive; digital signature; identity-based public key cryptosystem; inherent key escrow problem; public key encryption; certificateless; digital signature; secutity; signcryption;
Conference_Titel :
Information Science and Engineering, 2008. ISISE '08. International Symposium on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-2727-4
DOI :
10.1109/ISISE.2008.206