Efficient provably secure certificate-based signature scheme
Huang Ru-fe · Computer Engineering and Applications Journal · 2013
The certificate-based encryption is a new public key encryption paradigm which combines public key encryption and identity-based encryption while it preserves their features. This paper proposes an efficient construction of certificate-based sig- nature scheme using bilinear maps, with rigorous security proofs under the random oracle model. The security of the scheme is based on the infeasibility of the q-strong Diffie-Hellman problem and the expand inversed computational Diffie-Hellman prob- lem. The analysis shows that this new scheme satisfies the security requirements such as correctness and unforgeability, and has high security. It not only simplifies the certificate management process, but also overcomes the private key escrow problem. Fur- thermore, its overall performance is relatively high.