4 results about "Trusted timestamping" patented technology

The application relates to a code scanning authentication method, a system and related equipment. The method adopts scanning a two-dimensional code displayed by a client to obtain a trusted timestamp and a dynamic address; based on the trusted timestamp, a first signature is generated by using a first signature private key of a mobile terminal, the first signature is sent to a co-signing server to trigger the co-signing server to use a second signature private key stored by the co-signing server to perform secondary signing on the first signature; according to the dynamic address, a final signature, a signature certificate of the mobile terminal and the trusted timestamp are submitted to a corresponding authentication server; after authentication succeeds, in response to a login state query request, the client obtains user identity information and automatically completes login, the problems that in the prior art, mobile terminal key single-point storage risk is high, and after a private key is leaked, the private key is easily abused to cause authentication credentials to be impersonated are solved, the technical effect that authentication credentials impersonation risk caused by single-end private key leakage is avoided, and the security and reliability of code scanning authentication are improved.

The application discloses a kind of based on distributed storage technology's data storage evidence security processing method and system, its method includes: to the original electronic data of being stored evidence carries out hash operation, obtains first level evidence fingerprint;For first level evidence fingerprint issues trusted timestamp, first level evidence fingerprint, the content identifier of original data is combined with trusted timestamp and carries out hash operation as data packet and generates final evidence fingerprint;Final evidence fingerprint is broadcast to block chain network to generate evidence record;According to electronic evidence certificate, final evidence fingerprint is obtained from block chain network, and secondary hash calculation is re-executed to the original electronic data provided by user, and verification fingerprint is obtained, and verification conclusion of data integrity and evidence time credibility is determined according to the consistency of verification fingerprint and final evidence fingerprint.Reduces the cost of evidence, guarantees the high reliability of evidence timestamp, can be independently verified on the public block chain, effectively protects commercial secret and personal privacy.

Embodiments of the present specification provide a data verification method and device, wherein the data verification method comprises: obtaining to-be-verified data, a generation time of the to-be-verified data and a preset data table; performing data matching on the to-be-verified data by using the preset data table, and if the data matching is successful, determining that the existence verification of the to-be-verified data is successful; obtaining a target trusted timestamp from a time ledger, and if it is determined by using the target trusted timestamp that the generation time meets a preset trusted condition, determining that the timeliness of the to-be-verified data is successful. The present scheme can realize more reliable data verification.

This application provides a method and system for generating quantum-resistant timestamps using environmental electromagnetic noise, relating to the field of timestamp generation technology. The method generates a unique environmental fingerprint by collecting signal characteristics of multi-band environmental electromagnetic signals. The hash information of the environmental fingerprint is then bound together with the document hash and the precise UTC generation time using a quantum-resistant signature algorithm to generate a timestamp token. A data storage package is then constructed based on the timestamp token and uploaded to a distributed file storage system. During verification, the environmental fingerprint at the generation time is reconstructed by querying historical public radio data, thereby completing independent verification, improving the security of the timestamp, and effectively solving the problems of timestamp technology relying on centralized institutions and being vulnerable to quantum computing attacks. This achieves a decentralized, highly secure, and low-cost trusted timestamp service.