UICC device with secure storage function and instruction response method thereof

Abstract

The invention provides a UICC device with a secure storage function and an instruction response method thereof.The UICC device with the secure storage function comprises a memory, a storage access interface, a secure circuit and a memory is used for storing data, and the memory is used for expanding a storage space to a storage space of a preset size through 3D Flash technology and saving an access interface and used for receiving an instruction of the memory accessed by an application processor. The secure circuit is used for carrying out secure certification on the instruction that the application processor accesses the memory, wherein the secure circuit is an SE chip; and the storage access interface is also used for responding to a first memory access instruction after the instructionthat the application processor accesses the memory passes the secure certification. According to the UICC device with the secure storage function provided by the invention, the security of data in thememory is ensured when the requirement of an intelligent terminal for the storage space is met. Therefore, the intelligent terminal can realize upgrading of the memory space and security by using theUICC device.

Description

technical field [0001] The present application relates to the field of microelectronics, in particular to a UICC device with a safe storage function and an instruction response method thereof. Background technique [0002] With the development of business scenarios of the Internet of Things and 5G, applications in mobile phones and smart terminals of the Internet of Things (for convenience of description, mobile phones and smart terminals of the Internet of Things are collectively referred to as smart terminals hereinafter) are continuously enriched. Therefore, the amount of information that needs to be stored in smart terminals has increased dramatically. [0003] Moreover, the demand for data security of smart terminals is getting higher and higher, and the current advanced security technology requires hardware support. Even on the basis of increasing storage, information leakage incidents of smart terminals continue to occur, especially the security requirements for the ...

AI Technical Summary

Problems solved by technology

Even on the basis of increasing storage, information leakage incidents of smart terminals continue to occur, especially the security requirements for the protection of sensitive information such as personal property and privacy continue to increase, and the current encryption methods of smart terminals are software encryption, even TEE The security platform also needs to be embedded with SE chips, but smart terminals with SE chips are not popular at present, and the protection of local sensitive information of smart terminals needs to be further strengthened

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