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盲签名使得签名的接收者在不向签名者透露任何消息内容的情况下,获得签名者对消息的签名.由于盲签名具有盲性和不可链接性,能有效地保护用户的隐私,盲签名被广泛应用于匿名电子支付、匿名电子投票等系统.为适应不同的需求,国内外学者提出各种不同的盲签名方案.最近,文献[7-9]通过对文献[10-14]提出的盲签名方案的安全性进行分析,指出这些方案不能抵抗链接攻击.本文分析表明,文献[7-9]提出的链接攻击是无效的,且文献[10-14]的盲签名方案仍满足不可链接性.
The blind signature enables the recipient of the signature to obtain the signature of the message from the signer without revealing the content of the message to the signer.Because the blind signature is blind and non-linkable, the privacy of the user can be effectively protected. The blind signature is Widely used in anonymous electronic payment, anonymous electronic voting system.In order to meet different needs, scholars at home and abroad have proposed various blind signature schemes.Recently, the literature [7-9] The security of signature scheme is analyzed and it is pointed out that these schemes can not resist the link attack.The analysis in this paper shows that the link attack proposed by [7-9] is ineffective and the blind signature scheme in [10-14] still satisfies the non-linkability .