Method for switching master mode and slave mode of encryption card and encryption card

Abstract

The invention provides a method for switching a master mode and a slave mode of an encryption card and the encryption card. The encryption card comprises a power module, a detection module and a mode switching module, wherein the power module detects the power supply situation of a peripheral component interconnect (PCI) or a PCI express (PCIE) interface, and automatically supplies power to the encryption card if the PCI or the PCIE interface cannot be supplied with power; the detection module detects whether a host fails or not, and if the host fails, transmits a mode switching request to the mode switching module; after receiving the mode switching request from the detection module, the mode switching module switches the operating mode of the encryption card from the slave mode to the master mode; and the encryption card independently works in the master mode and continues providing a service for application. Under the condition of normal working of the host, the encryption card exchanges data with the external application through the host, and the host and the encryption card perform own functions, namely, the host functions in the reception and transmission of the data and the like and the encryption card only functions in encryption so as to ensure relatively higher working efficiency; and when the host fails, the encryption card can dynamically switch own operating mode from the slave mode to the master mode and work independently to continue providing the service for the application and ensure the quality of service when the host fails.

Description

technical field [0001] The invention relates to the field of encryption cards, in particular to a master-slave mode switching method of the encryption card and the encryption card. Background technique [0002] At present, encryption cards are widely used in the field of information security to authenticate user identities and ensure user data security. Ordinary encryption cards need to be directly inserted into the PCI (Peripheral Component Interconnect) or PCIF (PCI-Express) slot of the computer when in use. The host receives data packets through the network and sends them to the encryption card. The encryption card performs corresponding encryption, decryption or signature operations and returns the resulting data packets to the host, and the host transmits the data packets to the application through the network. Its structure is as follows: figure 1 shown. However, once the host fails to process network data packets, it will stop the service to the application, which m...

AI Technical Summary

Problems solved by technology

However, once the host fails to process network packets, it will stop the service to the application, which may cause significant losses and risks to the application.

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