Abstract
Coal mine law enforcement record terminal is mostly used in Android operating system. Aiming at the data security problem of Android system, this paper designs a data encryption storage module based on Threadx real-time operating system with i.MX RT1021 processor as the core. This paper introduces the hardware and software design of the encryption storage module in detail. Using DSA data encryption algorithm, combined with the characteristic information, through the actual test, this storage module realizes the reliable encryption storage of audio, video and text data of the law enforcement record terminal, which can effectively prevent the electronic evidence from being tampered with.
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