Method for enhancing stability of intelligent cipher key equipment and intelligent cipher key equipment

Abstract

The present invention pertaining to the field of information security, discloses a method for improving stability of an intelligent key device and an intelligent key device. The method comprises the steps of the intelligent key device establishing a connection with a host computer, opening a first interruption, reporting to the host computer that the intelligent key device is a composite device which at least comprises two virtual units, receiving and analyzing message commands sent by the host computer, closing the first interruption, judging that whether the time needed for processing the message commands exceeds a predetermined time, if true, processing the message commands, opening a second interruption, keeping processing when receiving subsequent message commands or informing the host computer to perform a delay process, closing the second interruption and opening the first interruption; if not, processing the message commands, storing the processing result and opening the first interruption. The intelligent key device comprises a USB interface module, a first interruption module, an intelligent key module and a second interruption module. According to the present invention, stability of communication between the intelligent key device and the computer is improved.

Description

technical field [0001] The invention relates to the field of information security, in particular to a method for improving the stability of an intelligent key device and the intelligent key device. Background technique [0002] With the development of information security technology, the application of smart key devices is becoming more and more extensive. The smart key device is a small hardware device with a USB (Universal Serial Bus, Universal Serial Bus) interface. COS), which can store the user's key and digital authentication certificate, use the built-in cryptographic algorithm to realize the authentication of the user's identity, with email encryption, digital signature, security certificate, secure network login and access SSL (Security Socket Layer, Secure socket layer protocol layer) security network and other functions, and has the characteristics of ensuring that the user's private key never leaves the hardware, and also has the characteristics of physical atta...

AI Technical Summary

Problems solved by technology

The command received / sent by multiple virtual devices to the host is executed by the same processor inside the composite device, which will lead to the unavoidable problem of instruction crossing when the computer and the composite device perform data exchange or data calculation, that is, When the computer processes the instructions sent by multiple virtual devices in the composite device, or when the composite device processes multiple cross-commands received from the computer, instability occurs. The command processing process of the virtual device is likely to delay the processing of commands of other virtual devices, or there may be mishandling, which reduces the stability of the smart key device when interacting with the computer

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