A new identity based blind signature scheme and its application

In order to solve the problem of computational complexity brought by bilinear pairing in identity based blind signature, a new ID-based blind signature scheme is proposed combined with Elgamal algorithm, and the blind signature scheme is applied to the field of civil aviation data transmission firstly. The signer is not visible to the original message and can't restore the original message by the signed message. The use of hash function to deal with both private key and the identity information is secure under the Random Oracle Model. Based on the classical Elgamal algorithm, the problem belongs to the discrete logarithm problem. The scheme is applied to the field of civil aviation data transmission and the experimental results show that it can effectively resist key recovery attacks and signature forgery attacks. The scheme has strong anti-attack ability and effective operation ability. Compared with other schemes, it needs less module operation and exponential operation. To sum up, this scheme is better than other schemes in the civil aviation's field.