An Attribute Based Partial Blind Signature Scheme with Provable Security
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Blind signature is an important cryptographic notion and it has been designed for data authentication in many scenarios such as digital currency, electronic voting. In this paper, we present an attribute based partial blind scheme (AB-PBS). We achieve fine-grained authentication by adopting the properties of attribute based signature. Furthermore, the signer and user can reach an agreement on some certain information in advance, which can prevent the illegal usage of blind signature. By security analysis, our AB-PBS is proved to be satisfied with blindness of unforgeability.