Method and device for generating key and corresponding decryption

Abstract

The purpose of this application is to provide a method and device for generating a key and corresponding decryption, by iteratively generating an encryption password based on the unique identifier of the user equipment; obtaining the key information of the current application, and using the encryption password to The above key information is encrypted. The key can only be accessed by a specific application, and cannot be accessed by other applications or terminals, meeting the requirements of application binding and device binding. When the user equipment starts the current application, based on the unique identifier of the user equipment, an iterative operation is performed to obtain the encrypted password; then, the encrypted key information of the current application is obtained, and the encrypted key information is encrypted by using the encrypted password Decryption; finally, use the decrypted key information to decrypt the relevant data stored in the current application, so that the key can only be used when the user uses the application, meeting the key security requirements agreed by the user.

Description

technical field [0001] The present application relates to the field of computers, and in particular to a technology for generating keys and corresponding decryption. Background technique [0002] The attack model of the mobile terminal key is divided into three types: malware, which applies for all available system permissions, such as sending text messages, making calls, reading contacts, obtaining geographical location and other private information; jailbreak attack, obtaining the highest authority of the device, scanning File system, to obtain system sensitive data; monitor root attacks, monitor user keyboard input, and obtain input content. [0003] At present, there are mainly the following methods for key protection of mobile terminals: First, ARM TrustZone technology divides embedded devices into two independent operating environments from the design of system bus, processor, etc., and Normal Word is responsible for the operation of Android OS. , Secure word is respo...

AI Technical Summary

Problems solved by technology

[0006] The purpose of this application is to provide a method and device for generating a key and corresponding decryption, so as to solve the key security problem at the user equipment end

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