支持时间约束的债券发行联盟链申购数据披露方法
Time-constraint bond issuance consortium blockchain purchase data disclosure method
孙爽 1唐华云 2丁旋 3王延昭 2李荣2
作者信息
- 1. 中央国债登记结算有限责任公司博士后工作站,北京 100033;中债金科信息技术有限公司区块链实验室,北京 100044;清华大学博士后流动站,北京 100084
- 2. 中债金科信息技术有限公司区块链实验室,北京 100044
- 3. 清华大学 软件学院,北京 100084
- 折叠
摘要
联盟链债券发行系统能够提高发行过程的可信性和公平性,但数据在联盟链网络内广播违反了发行期间申购数据不可以公开的业务规则.针对这一问题,借助前/后向衍生函数和代理重加密机制,提出一种支持时间约束的债券发行联盟链申购数据披露方法,在保证申购数据隐私的前提下,支持簿记管理人/发行人在发行期间解密申购密文从而完成配售计算,同时支持投资人和中央证券存管处在发行结束后解密申购密文追溯发行全流程;对所提方法进行形式化安全证明,分析方法的计算复杂度和通信复杂度.进行实验验证,通过实际应用场景验证所提方法的可行性和效率.
Abstract
Bond issuance via consortium blockchain can improve the credibility and fairness of the issuance,but the broadcast of the purchase data in the blockchain network violates the issuance business rules.To solve this problem,a time constrained purchase data disclosure method was proposed based on forward/backward derivation function and proxy re-encryption mecha-nism,which supported the bookkeeper or issuer to complete the bond allocation during the issuance and the investor to trace the whole issuance process after the issuance on the premise of ensuring the privacy of the purchase data.The formal security proof and computational as well as the communication complexity of the method were given.Experimental verification was carried out to verify the feasibility and efficiency of the proposed method through practical application scenarios.
关键词
联盟链/债券发行/申购数据披露/配售计算/前/后向衍生函数/代理重加密/时间约束Key words
consortium blockchain/bond issuance/purchase data disclosure/bond allocation/forward/backward derivation func-tion/proxy re-encryption/time constraints引用本文复制引用
基金项目
绿色发展大数据决策北京市重点实验室基金项目(dm202103)
出版年
2024
NETL
NSTL
万方数据