Distributed Timestamp Mechanism Based on Verifiable Delay Functions

In the data communication system, real-time information interaction of device increases risk privacy sensitive being tampered with. Therefore, maintaining security is one most important issues in network communication. Because timestamp way to authenticate interaction, it very necessary provide service system. However, existing centralized mechanism difficult credible service, and users can conspire with timestamping servers forge timestamps. this paper designs a distributed based on continuous verifiable delay functions. It utilizes multiple independent services model appends once generated. Thus, prove that already exists at certain time ensure accuracy timestamp. Moreover, digital blind signature elliptic curve cryptography utilized solve problem forgery service. Finally, analysis scheme ensures system concurrency rate The experimental results also show greatly improves efficiency signatures.