40results about How to "Guaranteed safe and reliable" patented technology

The invention discloses an intrusion detection method for an SMV (Sampled Measured Value) message of an IEC61850 digital substation. The method mainly consists of the following three steps: rapid filtering and data structuring of the SMV message, multistage correlative detection of a data unit of an SMV frame message, and hazard assessment of the SMV message. Through adoption of the intrusion detection method, the problem that security reinforcement of the SMV message in an IEC61850 standard cannot be generally finished through encryption and digital verification methods of IEC62351 in the prior art is solved.

Disclosed are a blockchain-based copyright event proxy deposit method and system. The equipment of some work service providers who operate work-related businesses can be used as member nodes to form an alliance chain network. Each work service provider broadcasts copyright events based on its own work-related business to the alliance chain network. Each work service provider based on Blockchain for distributed certificate storage. In addition, there is at least one proxy member node in each member node, and for each proxy member node, the proxy member node has the authority to proxy non-member nodes corresponding to the proxy member node to deposit copyright events.

The invention provides a trusted redundant fault-tolerant computer system which aims at satisfying the requirement for high safety and high reliability of systems in safety control fields. The trusted redundant fault-tolerant computer system is capable of blocking the operation of illegal programs of malicious codes, viruses and the like, protecting the system and core applications from being destroyed, protecting important information from being revealed, stolen, tampered and ruined, and shielding faults by means of a failure switching function to enable the system to work normally when faults of the system occur. The trusted redundant fault-tolerant computer system is based on a trusted cryptography module (TCM) safety chip, and a dual-computer redundant hot standby method and a compact peripheral component interconnect (CPCI) bus framework are used. Two trusted computer subsystems are configured in a computer case, each of the trusted computer subsystems is composed of a trusted computer main module (including a TCM and a flash disk), a power source module, a flash disk expansion module and an interface expansion module, and the failure switching between the two subsystems is achieved through a heartbeat server and a failure switching module.

The invention discloses an electronic evidence processing method and system for an electronic signature and two dynamic code service systems. The processing method includes the following steps that a dynamic code service system receives a dynamic code request initiated by a third-party system, the dynamic code service system generates the corresponding dynamic code based on the content of the dynamic code request and sends the dynamic code to the dynamic code reception end account corresponding to the identity information of a user; the third-party system acquires the dynamic code input by the user and returns the dynamic code to the dynamic code service system; the dynamic code service system receives the dynamic code returned by the third-party system, verifies whether the transmitted dynamic code and the received dynamic code is consistent, and sends the verification result to the third-party system; a digital signature module performs digital signature and / or time stamp signature on the content transmitted and received by a transmit-receive module to form an evidence; an evidence storage module stores the evidence; and a certified module completely verifies the evidence in the evidence storage module and gives a corresponding report based on the recorded content of the verified evidence. According to the invention, the problem that the signed document of the electronic signature in the prior art cannot be verified is solved.

The invention discloses an intrusion detection method of an IEC61850 digital substation GOOSE message. The method is mainly composed of three steps: GOOS message fast filtering and data structuring; GOOSE message multilevel association detection, and GOOSE message hazard assessment. The invention provides a realization method of intrusion detection on the IEC61850 digital substation GOOSE message, and aims at solving a problem that the safety reinforcing of the GOOSE message in the IEC61850 standard in the prior art usually cannot be accomplished through the encryption and digital verification method of the IEC62351 in an actual application.