基于区块链的匿名密码货币支付协议

Blockchain-based anonymous cryptocurrency payment system

借助Mixcoin模型和代理重签名算法的签名所有权的转化思想,提出了一种基于区块链的匿名密码货币支付系统模型。在支付阶段,通过利用代理重签名技术把交易用户的签名转换为权威机构的签名,然后通过权威机构的信任背书提高交易的确认速度,从而缩短交易确认时间和阻止了用户的双重花费,提高了交易效率;基于Diffie-Hellman密钥协商思想,利用用户和商家能够产生相同的一次公钥地址作为收款地址,更好地实现了资金流向的匿名性,即实现了交易的隐私保护。最后通过与其它两种方案进行性能比较,所建议的方案综合性能具有较大优势。

To achieve the users’ privacy protection and prevent double-spending as well as quick transaction confirmation,a blockchainbased anonymous cryptocurrency payment system is proposed by utilizing blockchain technique,Mixcoin model and proxy preresignature.In the payment phase,the transaction user’s signature is transformed into the signature of the authorized organization by using the proxy pre-signature,which reduces transaction confirmation time and improves transaction efficiency.Based on DiffieHellman key agreement,the common public key which is produced between the user and the merchant is act as the payee’s account,which realizes the anonymity of payee’s account well,and implements the transaction privacy protection.Compared with the other two schemes,the proposed scheme has the advantages over the others in terms of general preformation.