Fuzzy identity based signature scheme without random oracle model
Hong Liu · Computer Engineering and Applications Journal · 2011
In the random oracle model,Hash function is regarded as an ideal model of complete randomness which can’t be constructed actually.Utilizing bilinear paring of elliptic curves and threshold secret share,this paper proposes a fuzzy identity based signature scheme without the random oracle model based on Waters’s scheme.Compared with existing fuzzy identity based signature schemes,it doesn’t use Hash function to avoid the shortcoming of non-randomness of returned values,the system’s public parameters are less and the security can be reduced to the computation Diffie-Hellman assumption so that it can better meet the needs of practical applications.