Efficient ID-Based Proxy Signature and Proxy Signcryption Form Bilinear Pairings

In this paper, based on bilinear pairings, we would like to construct an identity based proxy signature scheme and an identity based proxy signcryption scheme without secure channel. We also analyze the two proposed schemes from efficiency point of view and show that they are more efficient than the existed ones. What’s more, our proposed schemes satisfy all of the security requirements to proxy signature and proxy signcryption schemes assuming the CDH problem and BDH problem are hard to solve.

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