One Attribute-Based Proxy Signature

For Identity-based proxy signature, when the original signer cannot sign for some reason, he delegate his signing capabilities to a person with an identity, in order to expand the scope of the proxy signer, an entity with a series of attribute properties can perform the right of signature. A new practical attribute-base proxy signature is devised and its security is proved equal to discrete logarithm problem and decisional bilinear Diffie-Hellman problem through using the methodology of reductionist security argument. The scheme possesses some security of strong unforgeability, strong identifiability, strong undeniability, verifiability, distinguishability, anti-collusion attack and avoids the misuse.