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Identity-Based Proxy Signature Protocols from Pairing

With the development of electrical commerce, many applications require creating messages that can be proven to be authentic so that forged or invalid message can be detected. The digital signature is a convenient and efficient technique to achieve there requirements. In traditional public key system, the digital signatures require that the verifier verify the public key of a user before using the public key, which is time consume and complex. In order to address this problem, many identity-based signature schemes have been proposed during pass ten years. However, few identity-based proxy signature schemes are proposed to address the application where the proxy signer signs a message on behalf of the original signer. In this paper, we present this scheme with more efficiency.