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中文摘要：
前向安全性可以有效减少由密钥泄露带来的系统安全隐患,是密码学中研究密钥泄露问题的一个重要分支。基于离散对数和二次剩余计算难题提出一个前向安全盲签名方案。分析表明,在离散对数困难的假设下,方案是自适应选择消息攻击存在不可伪造的;在二次剩余求解困难的假设下,方案具有前向安全性;方案具有盲性,签名者无法追踪消息的拥有者。
英文摘要：
Forward-security can effectively reduce the risks in system security caused by key exposure, and is an important branch of key exposure problem research in cryptography. Based on discrete logarithm and quadratic residue, we propose a new forward-secure blind signature scheme. Analysis shows that under the assumption of discrete logarithm difficulty, the scheme is existentially unforgeable against adaptive chosen message attacks; under the assumption of quadratic residue solution difficulty, the scheme satisfies forward-secure; the scheme also satisfies the blindness, and the signer can not trace the message owner.
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