Abstract
Fast signature verification is desirable in many applications, especially when signature recipients need to make response quickly. In this paper, we present an efficient online/offline verification of short signature (OVS) scheme without random oracles. Besides message signing, signature verification can be also separated into offline phase and online phase. Only one multi-exponentiation is required for the verifier in the online phase. In addition, our signature is short which gives about 480 bits for 80-bit security. Our scheme indeed improves the efficiency of signature verification since no pairing operation is required in the online phase. We also give a generic construction of OVS schemes using the idea of double trapdoor chameleon hash.
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Zhang, Y., Chen, Z., Guo, F. (2011). Online/Offline Verification of Short Signatures. In: Lai, X., Yung, M., Lin, D. (eds) Information Security and Cryptology. Inscrypt 2010. Lecture Notes in Computer Science, vol 6584. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-21518-6_24
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DOI: https://doi.org/10.1007/978-3-642-21518-6_24
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