Abstract
We shall propose a new group-oriented undeniable signature scheme without the assistance of any trusted center in this paper. A single group public key, instead of all public keys of individual members, is used to represent the group. A transformation is applied to convert the group public key and the message to be signed into a public parameter and thus been transmitted out. With this public parameter, a paying customer will be able to authenticate the validity of the signature with the consent of all signers. It is worth mentioning that the new group-oriented undeniable signature possesses all of the characteristics that listed in Harn and Yang's. Besides, Harn and Yang's scheme is generalized in this research.
This research is partially supported by National Science Council, Taiwan, Republic of China, under grant NSC-84-2213-E-029-001.
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© 1996 Springer-Verlag Berlin Heidelberg
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Lin, CH., Wang, CT., Chang, CC. (1996). A group-oriented (t, n) undeniable signature scheme without trusted center. In: Pieprzyk, J., Seberry, J. (eds) Information Security and Privacy. ACISP 1996. Lecture Notes in Computer Science, vol 1172. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0023305
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DOI: https://doi.org/10.1007/BFb0023305
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