Digital signature method, system and terminal based on mobile phone card

Abstract

The invention discloses a digital signature method, system and terminal based on a mobile phone card, and relates to the technical field of communication. The method of the present invention includes: the terminal receives the information to be signed sent by the application platform; the terminal forwards the information to be signed to the mobile phone card through the BIP channel; the terminal receives the digitally signed information sent by the mobile phone card through the BIP channel; The signed information is returned to the application platform for signature verification. The present invention establishes a BIP channel between the terminal and the mobile phone card, and based on the BIP channel, the mobile phone card and the application platform establish an interactive channel through the terminal, which can realize the digital signature based on the mobile phone card and provide security for the transmission of information. At the same time, the present invention The solution is applicable to a variety of terminals. It is simple and convenient, and there will be no problems of missed sending and long delay in the SMS mode, and the user experience will be improved.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a digital signature method, system and terminal based on a mobile phone card. Background technique [0002] Mobile phone cards, such as SIM (Subscriber Identification Module, customer identification module) cards or UIM (User Identify Module, user identification module) cards have secure data storage capabilities. Based on this feature, mobile phone cards are currently widely used in the field of security authentication, such as , authenticate the identity of the user when transferring money through mobile banking, use the mobile phone card to perform digital signatures, etc. [0003] At present, the interaction between the mobile phone card and the application server usually uses the following methods: OMA (Open Mobile API, mobile open interface) and OTA (Over the Air, over-the-air technology) short message method. However, the terminal support of the OMA channel is not e...

AI Technical Summary

Problems solved by technology

However, the terminal support of the OMA channel is not enough. Only the Android NFC (Near Field Communication, near field communication) terminal can support the OMA channel, and other terminals do not support the OMA channel; It can only transmit more than 100 bytes. If it takes about 20 text messages to transmit a digital certificate, it is difficult to implement, and the stability is not high, the delay is long, and the user experience is poor.

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