关键词: 公钥密码学, 无证书, 代理盲签名, 双线性对, 离散对数

Abstract: Certificateless public key cryptography is not only secure but also efficient because it does not suffer the cost of the certificate management in traditional public key cryptography and the key escrow problem inherited in ID-based public key cryptography. The study of proxy blind signatures consturction and applicatioan shows that present certificateless proxy blind signature schemes are very few and proxy blind signature schemes in certificateless public key systems can fulfill the safety and high efficiency required in electronic voting and e-banking and other fields better. Based on the bilinear pairing and discrete logarithm problem, a new certificateless proxy blind signature scheme which fulfils the properties of blindness, non-forgeability, identifiability, nonrepudiation and so on was given.

Key words: Public Key Cryptography (PKC), certificateless, proxy blind signature, bilinear pairing, discrete logarithm