Commenced in January 2007
Paper Count: 30069
A New Proxy Signature Scheme As Secure As ElGamal Signature
Abstract:Proxy signature helps the proxy signer to sign messages on behalf of the original signer. It is very useful when the original signer (e.g. the president of a company) is not available to sign a specific document. If the original signer can not forge valid proxy signatures through impersonating the proxy signer, it will be robust in a virtual environment; thus the original signer can not shift any illegal action initiated by herself to the proxy signer. In this paper, we propose a new proxy signature scheme. The new scheme can prevent the original signer from impersonating the proxy signer to sign messages. The proposed scheme is based on the regular ElGamal signature. In addition, the fair privacy of the proxy signer is maintained. That means, the privacy of the proxy signer is preserved; and the privacy can be revealed when it is necessary.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1331111Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF
 T. Elgamal, "A public key cryptosystem and a signature scheme based on discrete logarithms", IEEE Trans. IT-31 (1985) 469-472.
 E. J. Goh, S. Jarecki, "A signature scheme as secure as the Diffie-Hellman problem", in: Proceedings of Eurocyrpt-2003, LNCS 2656, 2003, pp. 401- 415.
 S. J. Hwang, C.-C. Chen, "A new proxy multi-signature scheme", in: International Workshop on Cryptology and Network Security, Taipei, Taiwan, ROC, December 2000, pp. 134-138.
 C. L. Hsu, T.-S. Wu, T.-C. Wu, "New nonrepudiable threshold proxy signature scheme with known signers", The Journal of System and Software 58 (2001) 119-124.
 S.J. Hwang, C.-H. Shi, "A simple multi-proxy signature scheme", in: Proceedings of the Tenth National Conference on Information Security, Hualien, Taiwan, ROC, 2000, pp. 134-138.
 B. Lee, H. Kim, K. Kim, "Strong proxy signature and its application", in: Proceedings of SCIS 2001, 2001, pp. 603-608.
 M. M. Mambo, K. Usuda, E. Okmamoto, "Proxy signatures: delegation of the power to sign message", IEICE Transaction Functional E79-A (9) (1996) 1338-1354.
 D. R. Stinson, "Cryptography: theory and practice"- CRC Press, 1995.
 M. S. Hwang, L.-C. Lin, J.-L.L.U. Eric, "A secure nonrepudiable threshold proxy signature scheme with known signers", Information 11 (2) (2000) 137-144.
 S. Kim, S. Park, and D. Won, "Proxy Signatures, Revisited", Proc. of ICICS-97, Y. Han et al(Eds.), LNCS 1334, Springer-Verlag, pp. 223-232, 1997.
 H. X. Wang, J. Pieprzyk, "Efficient one-time proxy signatures", in: Proceedings of Asiacrypt 2003, LNCS 2894, 2003, pp. 507-522.