One Secure Attribute-Based Proxy Signature
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Attribute-based cryptography has drawn much attention due to its unique advantages and has gained many achievements over the years. Proxy signature allows that people need to delegate some of their signing rights to a reliable agent (that is, a proxy signer), and let proxy signer exercise such powers on his behalf. Here, a new attribute-based proxy signature with large universal attributes is proposed. The original signer delegates some of their signing rights to a proxy signer with some special attributes, then proxy signer can sign some message in the name of the original signer. We firstly give the formal syntax of an attribute-based proxy signature and the formal security model in the random oracle. The scheme is secure through detailed analysis. The scheme has the secure requirements of proxy signature system as following, distinguishability, verifiability, strong unforgeability, strong non-repudiation, strong identifiability, abuse resistance. In addition, the scheme is resistant to the collusion attack required in the attribute-based signature system.
KeywordsAttribute-based Proxy signature Original signer Proxy signer CDH problem
This work was supported partially by Henan Province Key Science-technology Research Project under Grant No. 162102210109, Henan Province Major Science-technology Project under Grant No. 131100110400-04, Science-technology Research Key Project of Henan Province Education Department under Grant No. 14B413009, and Science-technology Research Project of Zhengzhou city under Grant No. 141PPTGG431.
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