SIM chip security and credibility authentication system and authentication method thereof

Abstract

The invention provides an SIM chip security and credibility authentication system and an authentication method thereof. The system comprises a microprocessor, a digital certificate circuit, an algorithm circuit, a security authentication circuit, a security chip and an SIM chip. The microprocessor provides authorization management for the safety chip and the safety certification circuit, the safety chip is added to serve as an independent chip before communication connection is established between the SIM chip and the terminal equipment, and the SIM chip enhances the safety self-checking function of the SIM chip by executing a safety self-checking module in the safety chip. The microprocessor is used for carrying out security and credibility authentication management on the security authentication circuit, so that credibility authentication of the SIM chip on the terminal equipment is realized, and the terminal equipment which does not pass the authentication is refused to be connectedwith the SIM chip. According to the invention, the authorization management and the security and credibility authentication of the SIM chip are realized by adopting an asymmetric cryptography technology, the self-security of the SIM chip is realized from a chip layer by adding the security self-check of the security chip, and a reliable security guarantee is provided for the security communication of the terminal equipment.

Description

technical field [0001] The invention relates to the field of security design of integrated circuits, in particular to a security and credible authentication system and authentication method applicable to a SIM chip. Background technique [0002] SIM card (Subscriber Identification Module), known as subscriber identification card, or SIM smart card, is currently a card that must be equipped or configured in GSM digital mobile phones worldwide. One of the most widely used electronic devices. In the market, there is also a new type of SIM card with embedded technology, that is, eSIM card. The concept of eSIM card is to embed the traditional SIM card directly into the device chip instead of adding it to the device as an independent removable component. Users do not need to insert a physical SIM card, just like the PHS in the early years. This approach will allow users to choose operator packages more flexibly, or change operators at any time without unlocking the device or pur...

AI Technical Summary

Problems solved by technology

[0004] However, in the prior art, the SIM chip only supports one-way authentication and does not support two-way authentication.

Even if users can independently access the mobile network through legal authentication, and mobile operators pay more attention to their own information and privacy data protection work, due to the lack of user authentication of mobile terminal equipment and networks, this gives rise to problems such as "pseudo base stations". As a result, criminals will use other people's mobile device numbers or arbitrary numbers to forcibly send spam messages such as fraudulent sales and marketing to users' mobile terminal devices.

Due to the defects of the current SIM card or eSIM protocol, it is currently impossible to effectively prevent the leakage of SIM chip data and effectively defend against network attacks against SIM chips, which seriously threatens the security of devices and networks in the Internet of Things era.

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