An encryption/multisignature scheme with specified receiving groups

Abstract

In this paper, we propose a new multisignature scheme that allows all of the signers to specify the recipients. The encryption function is also integrated into our multisignature scheme, thus the new scheme can provide secrecy, authenticity, and integrity services. Moreover, the message expansion is also reduced. Comparing to the proposed multisignature scheme, the new scheme is the first one which allows the singers to specify the recipients.