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Ring signatures of sub-linear size without random oracles

Chandran, N; Groth, J; Sahai, A; (2007) Ring signatures of sub-linear size without random oracles. In: Arge, L and Cachin, C and Jurdzinski, T and Tarlecki, A, (eds.) Automata, Languages and Programming, Proceedings. (pp. 423 - 434). SPRINGER-VERLAG BERLIN

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Ring signatures, introduced by Rivest, Shamir and Tauman, enable a user to sign a message anonymously on behalf of a "ring". A ring is a group of users, which includes the signer. We propose a ring signature scheme that has size O(root N) where N is the number of users in the ring. An additional feature of our scheme is that it has perfect anonymity.Our ring signature like most other schemes uses the common reference string model. We offer a variation of our scheme, where the signer is guaranteed anonymity even if the common reference string is maliciously generated.

Type: Proceedings paper
Title: Ring signatures of sub-linear size without random oracles
Event: 34th International Colloquium on Automata, Languages and Programming
Location: Wroclaw, POLAND
Dates: 2007-07-09 - 2007-07-13
ISBN-13: 978-3-540-73419-2
URI: http://discovery.ucl.ac.uk/id/eprint/148918
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