鉴于无证书线性同态签名可解决传统线性同态签名中的秘钥托管和证书管理问题,针对现有无证书线性同态签名方案存在无法抵御量子攻击的问题,基于小整数解问题,设计了格上无证书线性同态签名方案,并证明了该方案在自适应选择消息攻击下满足存在不可伪造性(existential unforgeability under adaptive chosen-message attacks,EUF-CMA).
Certificateless Linearly Homomorphic Signature Scheme from Lattices
Certificateless linearly homomorphic signatures solve the problems of key escrow and certificate management in traditional linearly homomorphic signatures.To solve the problem that existing certificateless linearly homomorphic signatures schemes cannot resist quantum attacks,a certificateless linearly homomorphic signature scheme from lattices is proposed in this paper.Based on the hardness of the small integer solution problem,our scheme satisfies unforgeability under the adaptive chosen-message attacks.
linearly homomorphic signaturecertificatelessnesslatticessmall integer solution problem
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