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Published in:
2005 | OriginalPaper | Chapter
Short Threshold Signature Schemes Without Random Oracles
Authors : Hong Wang, Yuqing Zhang, Dengguo Feng
Published in: Progress in Cryptology - INDOCRYPT 2005
Publisher: Springer Berlin Heidelberg
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Recently, Boneh and Boyen proposed a short digital signature scheme where signatures are as short as DSA signatures, but are provably secure in the absence of random oracles. We propose threshold signature schemes based on their short signature scheme. Signatures of our schemes are the same as the underlying short signature scheme. We also prove security of our schemes under q-SDH assumption without using random oracles. To the best of our knowledge, this is the first threshold construction for the short signature scheme without random oracles.