Identity-Based Secret Signature Scheme.pdfVIP

2009 Fourth International Conference on Computer Sciences and Convergence Information Technology Identity-Based Secret Signature Scheme Byoungcheon Lee Jin Li Kwangjo Kim Dept. of Information Security Department of ECE School of Engineering Joongbu University Illinois Institute of Technology KAIST Geumsan-Gun, Chungnam, Korea Chicago, Illinois 60616, USA Daejeon, Korea sultan@joongbu.ac.kr jli25@iit.edu kkj@kaist.ac.kr Abstract—Secret signature, proposed by Lee et al. [11], is a can decrypt and retrieve the original signature. This is the so- new signature scheme which provides signature privacy and called sign-then-encrypt approach, which is widely adopted public provability together. Using the secret signature scheme in the real world. Several schemes proposed in the literature a signer can send his signature secretly to a specific receiver such that only the designated receiver can verify the signature. can also be used to achieve signature privacy, for example, If any argument occurs between them, the validity of the secret signcryption [15], designated verifier signature (DVS) [4], signature can be proven publicly either by the signer or the [10] and limited verifier signature (LVS) [1], [6]. Recently, receiver. Thus it can be used as an important cryptographic Lee et al. [11] proposed a new notion of digital signature, primitive to implement private business transactions.