A verifiably encrypted signature scheme with many signature extractors
Qingbo Li · Journal of Zhengzhou University of Light Industry · 2008
By using many signature extractors in a short signature scheme,a verifiably encrypted signature scheme was proposed,in which anyone can verify the validity of the encrypted signature by using the public parameters.It is found that the ciphertext of the signature can disclose nothing but the message to be signed.Further more,only when all the signature extractors cooperate can the signature be extracted from its ciphertext efficiently,which can make the fair exchange protocol more secure.It can be used in low-bandwidth communication and low-storage environments.