An efficient multi-recipient signcryption scheme for multi-user communication

The traditional methods are not efficient in transmitting messages to multiple users. To address the efficiency and security problems, this paper constructed a new multi-recipient signcryption scheme, which employed the randomness reusing and is proved to be semantic secure under the random oracle model and GDH assumption. It is showed that it has the lower overheads than other existed schemes. The totally cipher text and computational cost of the proposal is (n+1)/2n times than traditional methods'. It is an ideal resolution for wireless networks.

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