An Efficient Identity based Multi-Proxy Multi-Signcryption Scheme from Bilinear Pairings

Signcryption is a cryptography primitive that fulfills both the functions of digital signature and encryption and guarantees non-repudiation, confidentiality and integrity in a more efficient way. In this paper, we propose an efficient and secure identity based multi-proxy multi signcryption scheme from bilinear pairings. In this scheme a group of proxy signcrypters could authorize by a group of original signcrypters. Then multi proxy multi signcryption could generate by the cooperation of all signcrypters in the proxy group.