Efficient Distributed Signcryption Scheme as Group Signcryption
The existing distributed signcryption is designed for distributing a signcrypted message to a designated group. However, it does not provide confidentiality of sender ID and its extension to a group signcryption has certain weakness. This study solves the weakness and extends to an efficient group signcryption. In addition, the proposed distributed signcryption provides with sender ID confidentiality. The extension to a group signcryption is more efficient in computational load than the existing scheme. Moreover, the group manager doesn’t need to keep and generate his group member’s secret information. It can enhance the strength of security in the protocol.
KeywordsSigncryption Group signature Public-key Cryptography
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- [CS97]Camenisch, J., Stadler, M.: Efficient group signature schemes for large groups. In: Kaliski Jr., B.S. (ed.) CRYPTO 1997. LNCS, vol. 1294, pp. 410–424. Springer, Heidelberg (1997)Google Scholar
- [DSS]National Institute of Standards and Technology, Digital Signature Standard. Federal Information Processing Standards Publication FIPS PUB 186 U.S. Department of Commerce (1994)Google Scholar
- [MOV]Manezes, A.J., van Oorshot, P.C., Vanstone, S.A.: Handbook of Applied Cryptography. CRC Press, Boca Raton (1997)Google Scholar
- [MV00]Mu, Y., Varadharajan, V.: Distributed signcryption. In: Roy, B., Okamoto, E. (eds.) INDOCRYPT 2000. LNCS, vol. 1977, pp. 155–164. Springer, Heidelberg (2000)Google Scholar
- [Zhe1]Zheng, Y.: Digital signcryption or how to achieve cost(signature & encryption) < < cost(signature) + cost(encryption). In: Kaliski Jr., B.S. (ed.) CRYPTO 1997. LNCS, vol. 1294, pp. 165–179. Springer, Heidelberg (1997)Google Scholar