基于安全多方的区块链可审计签名方案

针对可信问题，提出了一种基于安全多方的区块链可审计签名方案。该方案引入了带有时间戳的信任向量，并构建由多维向量组构成的信任矩阵用以定期记录参与者的可信行为，从而为参与者建立一种可信的评估机制，最后将评估结果存储到区块链中作为查证的依据。在确保参与者可信的前提下，通过秘密共享技术构建了安全可信的签名方案。安全分析表明，该方案可以有效减少恶意参与者带来的破坏，可检测参与者的可信度，并可以抵抗移动攻击。性能分析表明，该方案具有较低的计算复杂度和较高的执行效率。

Auditable signature scheme for blockchain based on secure multi-party

Aiming at the credibility problem, a secure multi-party blockchain auditable signature scheme was proposed. In the proposed scheme, the trust vector with timestamp was introduced, and a trust matrix composed of multi-dimensional vector groups was constructed for regularly recording the trustworthy behavior of participants, so that a credible evaluation mechanism for the participants was established. Finally, the evaluation results were stored in the blockchain as a basis for verification. On the premise of ensuring that the participants are trusted, a secure and trusted signature scheme was constructed through secret sharing technology. Security analysis shows that the proposed scheme can effectively reduce the damages brought by the malicious participants, detect the credibility of participants, and resist mobile attacks. Performance analysis shows that the proposed scheme has lower computational complexity and higher execution efficiency.