A Lightweight Message Encrypt Protocol for Electronic Commerce

In this paper, we propose a publicly verifiable batch encryption scheme. It allows a trusted entity to verify that two or more cipher texts hind the same message without revealing it. The message can also be verified by running a single PVE scheme with the same public value for each cipher text. However, it requires more computation than our scheme. According to our analysis, our scheme can reduce the overhead of computations by 66%. Furthermore, our scheme can be applied to voting and network testing to prove the fairness.