Efficient ID-based blind signature schemes

Blind signature allows the user to obtain a signature of a message in a way that the signer learns neither the message nor the resulting signature. Identity-based public key cryptography can simplify key management procedure compared to certificate-based public key cryptography, so it can be a good alternative for certificate-based public key setting, especially when efficient key management and moderate security are required. In this paper, we propose a new ID-based blind signature scheme from the bilinear pairings. Also we analyze the scheme security and efficient. We show that our new scheme is more efficient than all others proposed so far.