Abstract
Aiming at the efficiency and security weaknesses that exist in the identity-based ring signature schemes,using the method of bilinear pairing,this paper propose a new construction of identity-based ring signature scheme.This scheme is existentially unforgeable against adaptive chosen message attacks in the standard model,and can achieve unconditional anonymity.The new scheme,with constant size signatures,only needs three pairing operations.Compared with other existing schemes,this construction can provide better efficiency in terms of the communication cost and computation cost as well as the security guarantee,thus it can more satisfy the application requirements.
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