Research and design of teaching method on blind signature and certificateless signature in network security and cryptography

Abstract

Certificateless signature (CLess) scheme and paritial blind signature scheme with certificateless (CLess) are two important concepts in network security and cryptography. In a CLess scheme, the key escrow problem can be solved by the signature key being generated by the signer and PKG (Private Key Generator). In a CParBSS scheme, the abusing of the signature for illegal message can be solved by inserting a piece of common information negotiated by the signer and the requestor in advance. In this paper, we use a scheme as the CParBSS case to analyze its security by presenting the detail process of replacement attack of the public key and forgeability attack respectively. We also use a scheme as the CLess case to analyze its security by presenting the forgeability attack from anyone user. Based on the security analysis, we present an efficiency comparison and analysis between different schemes, and a design of the teaching method on CLess and CParBSS.