An Efficient Verifiably Encrypted Signature Scheme without Random Oracles.
Yang Ming, Yumin Wang · 2009
In this paper, we propose an efficient verifiably encrypted signature scheme based on bilinear pairings. The proposed scheme is proven secure without random oracles. Our scheme has a tight security reduction to a strong but reasonable computational assumption. To the best of our knowledge, it is the third one of this kind in the literature to achieve this security level.