multi-recipient
2.3. We propose a certificate-based multi-recipient signcryption scheme and an identity-based multi-recipient signcryption scheme.
3.It can also provide enhanced capabilities such as multi-recipient broadcast, automatic retry and archiving.
4.In this scheme, extending two bases and four states used in Bennett and Brassard protocol(BB84) to multi-bases and multi-states,a distributor sends the encoded N-dimensional quantum system to one of his two recipients. After receiving the quNit, the recipient makes a unitary operation on it using a N-dimensional cloning machine, and then sends it to the other recipient.
