An Identity-based Ring Signature Scheme from Lattices
Identity-based ring signature is the combination of the identity-based cryptography and ring signature.It can be used in many practical applications.Most of the existing identity-based ring signatures are based the bilinear pairing assumption.How ever,bilinear pairing problem is no longer hard in the quantum era.To construct an identity-based ring signature securing in the quantum era,in this paper,we presented an identity-based ring signature scheme based on lattices.The scheme is secure in the standard model.The security of scheme is based on the standard small integer solution(SIS) assumption.Compared with other identity-based ring signature schemes from lattices in the standard model,our scheme enjoys higher efficiency.