Fast encryption method and device for Android user partition and terminal equipment

Abstract

The embodiment of the invention provides a fast encryption method and device for an Android user partition and terminal equipment. The method comprises the steps that an encryption layer of the user partition of the Android terminal equipment is set up; a data distribution bitmap with a Block as a unit is set up for the user partition according to a file system in an inner core of the Android terminal equipment, wherein the data distribution bitmap is used for showing the use state of the Blocks in the user partition; the original data of the used Blocks in the user partition are read according to the data distribution bitmap; the original data of the Blocks are encrypted; the encrypted data of the Blocks are written back to the user partition, and cover the original data of the Blocks. According to the fast encryption method and device for the Android user partition and the terminal equipment, the user partition of the Android terminal equipment is encrypted through information, recorded by the file system of the Android terminal equipment, of the used data blocks, invalid data are prevented from being encrypted when the user data are encrypted, and therefore the effect of shortening the time spent in encrypting the partition is achieved.

Description

technical field [0001] The embodiments of the present invention relate to the communication field, and more specifically, relate to a fast encryption method, device and terminal equipment for an Android user partition. Background technique [0002] As smart phones have more and more functions, users store more and more content on their phones, including personal information such as various photos and chat records. Once the mobile phone is accidentally lost, the private information will directly fall into the hands of others, which is very unsafe. Therefore, it is particularly important to provide a security solution for protecting personal data on the mobile phone. [0003] Existing Android (Android) terminal devices, data storage partitions are mostly based on the Linux ext4 file system, which is a log file system developed for block devices, and does not provide an encryption function itself. However, the Linux kernel itself also provides an encryption layer function (dm-...

AI Technical Summary

Problems solved by technology

[0004] However, because the encryption scheme uses the encryption layer built on the block device layer to complete the encryption, it is impossible to identify whether the data stored on the device is valid during encryption, and the entire partition must be encrypted, resulting in a long encryption process (about 1 hour). )

Images