CN109543436B - Improved method for android device encryption process user experience - Google Patents

Abstract

The invention belongs to the technical field of information security, and particularly relates to an improvement method for user experience of an android device encryption process. The method mainly solves the problem that the asynchronism of the prior android device in starting the minimum framework service can cause the first-time starting animation to be interrupted only by half. The main technical scheme comprises: s1, when the minimum framework service is started, judging whether the value of Vold.decrypt is equal to trigger _ restart _ min _ frame, if yes, executing S2, otherwise executing S1; s2, loading an encryption prompting animation through a bootanimation thread; s3, when the minimum framework service is started, executing S4 if a CryptKeeper interface appears, otherwise executing S2; s4, exiting the animation; and S5, encrypting the data, restarting the system and ending the encryption.

Description

Improved method for android device encryption process user experience

Technical Field

The invention relates to the technical field of information security, in particular to an Android system encryption method.

Background

With the continuous development of an Android operating system, the application range of the Android system is continuously expanded. Therefore, in order to protect the legitimate rights and interests of developers and users of Android applications, the Android programs need to be protected from security, and programs written in the Java language are easily subjected to reverse cracking. The main problem privacy of the Android system is faced in security. In the manual encryption process of a user, an interface of the current android device is almost blank, the user waits for more than 1 minute on the blank interface, the time is the restart process of the system frame, and if the user does not know that the device is in the restart frame service, the user can think that a machine is dead and forcibly restarts, so that the encryption process fails. The encrypted equipment needs to start a minimum frame service for a user to input a password in the starting or restarting process, the starting process of the minimum frame service can load a starting animation by default, when the password is matched, the whole frame service needs to load the starting animation once in the restarting process, and the same starting animation is loaded twice, so that misleading is caused to the user. Furthermore, the asynchrony in starting the minimal framework service results in the interruption of the first boot animation only half way through, and the user experience is poor.

Disclosure of Invention

The invention aims to solve the problem that the asynchronism of the prior android device in starting the minimum framework service can cause the first-time starting animation to be interrupted only by half.

The technical scheme adopted by the invention is as follows:

an improved method for android device encryption process user experience, comprising the steps of:

step S1, obtaining pre-encryption equipment context information;

step S2, closing main type service;

step S3, unloading the data partition and mounting a tmpfs file system;

step S4, when the minimum framework service is started, judging whether the system attribute Vold.decrypt value is equal to trigger _ restart _ min _ frame, if yes, executing step S5, otherwise executing step S4;

step S5, loading an encryption prompting animation through a bootanimation thread;

step S6, when the minimum frame service is started, if a CryptKeeper interface appears, executing step S7, otherwise, executing step S5;

step S7, the animation exits;

in step S8, data encryption is performed, and when the digest is valid, the system is restarted, and encryption is completed.

In the above technical solution, when the encrypted device is restarted, the attribute value of ro.

In summary, due to the adoption of the technical scheme, the beneficial effects of the invention are as follows:

1. the process interface of the android device system framework restart can provide user prompt animation when the interface is about 1-minute black.

2. Another boot animation is provided during password matching of an encrypted device during boot or reboot.

3. The asynchrony of starting the minimal framework services does not cause the first boot animation to be interrupted in half.

Drawings

Fig. 1 is a flowchart of an improved method for user experience in an android device encryption process of the present invention.

FIG. 2 is a CryptKeeper interface.

FIG. 3 is a user prompt animation or mp4 interface.

Detailed Description

All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

The present invention will be described in detail with reference to fig. 1.

The present invention is intended to solve two problems:

firstly, in the manual encryption process of the current android device, the interface is almost blank and unfriendly! The user needs to wait for more than 1 minute on a very dark interface, which is the process of restarting the system frame, and if the user does not know that the device is in the service of the restart framework, the user can think that the machine is dead and forcibly restarts, which causes the failure of the encryption process.

And secondly, in the starting or restarting process of the encrypted equipment, a minimum framework service is required to be started for a user to input a password, the starting process of the minimum framework service can load the starting animation once by default, and when the password is matched, the starting animation needs to be loaded once in the whole framework service restarting process, so that the same starting animation is loaded twice, and misleading is caused to the user. Furthermore, the asynchrony in starting the minimal framework service results in the interruption of the first boot animation only half way through, and the user experience is poor.

And thirdly, the problem of poor user experience exists in android equipment in the market such as millet, MotoZ, three stars and the like. Improvements in user experience with respect to the encryption process and the mount process are not currently available.

The key points of the solution are as follows:

1. the user prompts animation or mp4 when designing the android device encryption of the image, as follows in FIG. 3:

2. when the minimum framework service is started, the user prompt animation is loaded when the system attribute Vold. decrypt value is equal to trigger _ restart _ min _ frame.

3. When the minimum framework service is started and a CryptKeeper interface appears, the following figure 2 is shown: the user prompts that the animation is played completely;

4. encrypted device restart time ro. crypt. state attribute value is "encrypted", while the vold. crypt attribute value is set to "trigger _ default _ encryption". Decryption determines what animation is played by reading the value of the attribute' vold. When the encrypted disk is mounted successfully, the value of attribute vold.

The scheme works as follows:

1. when a user manually encrypts a device through a setting, security, an interface of the encrypted device, a series of changes of system attribute vold. Trigger _ shutdown _ frame- - -Trigger _ post _ fs _ data

- - -trigger _ restart _ min _ frame. Rc, a change in vold. decryption triggers a corresponding reaction of the system, and when vold. decryption is trigger _ restart _ min _ frame, the system starts a minimum framework service to display the CryptKeeper interface.

2. The system needs to do the following before restarting the minimum framework services:

-retrieving stored context information related to encryption of the device.

Calculating the size of the equipment to be encrypted, taking the encrypted key, and closing the main type service.

And thirdly, unloading the data partition, and mounting tmpfs to create a file system.

Initializing the encryption context information, obtaining a key according to password, salt value and the like, storing two pieces of key information, and restarting the min _ frame.

3. In the above process, the device screen is completely dark and has a long duration. As the amount of user data increases, the time may be longer, and the user experience may be poor. Therefore, in the process of starting the minimum framework service, an encryption prompt animation is loaded through the bootanimation thread until a CryptKeeper interface appears. The user does not feel the abnormality.

The above-mentioned embodiments only express the specific embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for those skilled in the art, without departing from the technical idea of the present application, several changes and modifications can be made, which are all within the protection scope of the present application.

Claims (1)

1. An improved method for android device encryption process user experience, comprising the steps of:

step S1, obtaining pre-encryption equipment context information;

step S2, closing main type service;

step S3, unloading the data partition and mounting a tmpfs file system;

step S4, when the minimum framework service is started, judging whether the system attribute Vold.decrypt value is equal to trigger _ restart _ min _ frame, if yes, executing step S5, otherwise executing step S4;

step S5, loading an encryption prompting animation through a bootanimation thread;

step S6, when the minimum frame service is started, if a CryptKeeper interface appears, executing step S7, otherwise, executing step S5;

step S7, the animation exits;

step S8, performing data encryption, restarting the system when the create is trigger _ restart _ frame, and ending the encryption;

when the encrypted device is restarted, the attribute value of ro.

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