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INFORMATICALT
2007

A Concealed t-out-of-n Signer Ambiguous Signature Scheme with Variety of Keys

9 years 11 months ago
A Concealed t-out-of-n Signer Ambiguous Signature Scheme with Variety of Keys
In 2004, Abe et al. proposed a threshold signer-ambiguous signature scheme from variety of keys. Their scheme is a generalized case of the ring signature scheme, and it allows the key types to be based on the trapdoor one-way permutations (TOWP) or sigma-protocols including Schnorr’s signature scheme. However, the signed message is public for all, which may result in disputes. In this paper, we present a novel threshold signer-ambiguous signature scheme, having the signed message concealed and keeping who the receivers are secret from variety of keys. Key words: trapdoor one-way permutation, digital signature, signer-ambiguous signature, ring signature, Schnorr’s signature scheme.
Ya-Fen Chang, Chin-Chen Chang, Pei-Yu Lin
Added 15 Dec 2010
Updated 15 Dec 2010
Type Journal
Year 2007
Where INFORMATICALT
Authors Ya-Fen Chang, Chin-Chen Chang, Pei-Yu Lin
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