A protocol for threshold generation of signcryption
Futai Zhang · Journal of China Institute of Communications · 2002
In this paper, we propose a protocol for threshold generation of signcryption using the techniques of verifiable secret sharing (VSS) and secure multi-party computation (MPC). In the protocol, any t or more honest members can efficiently generate valid signcrypyion text of a given message, while the adversary whole corrupts up to t-1 group members cannot forge any valid signcryption text. The protocol of computing reciprocals of secrets presented by Gennaro R, Jarecki S, Krawczyk H and Rabin T is also modified so that the efficiency is improved.