CN101901320A - A data leakage prevention method for e-book reader - Google Patents

Abstract

The invention discloses a data leakage prevention method for an e-book reader, which is based on a password setting module, an encryption cancellation module, and a password verification module connected to a sqlite3 database in an Android system. The password setting module includes file encryption and machine encryption; the password cancellation module includes file decryption and machine decryption; the password verification module includes file opening, power-on password verification, and USB password verification. After a series of data leakage prevention processes, the e-book reader realizes the function that others cannot view the user's private files through any means such as a computer or directly using the e-book reader. The user selects file encryption or machine encryption or file and machine encryption at the same time according to the needs, and determines the encryption level, which can comprehensively, multiplexly and effectively protect the private documents of the user of the e-book reader and prevent data leakage.

Description

A data leakage prevention method for e-book reader

technical field

The invention relates to a data leakage prevention method, in particular to a data leakage prevention method used for an e-book reader and based on an Android system.

Background technique:

With the development of E-Ink screens, e-book readers are loved by the public and more and more are applied to people's lives, and the promising Android operating system is also more and more applied to e-book readers. In today's highly developed science and technology, information security issues are imminent, and people are paying more and more attention to personal information security. The Android operating system in existing e-book readers rarely has data leakage prevention functions, or although it has data leakage prevention functions , but the price is high and cannot be popularized. The data security protection of electronic paper books has become an urgent demand of users.

Invention content:

The purpose of the present invention is to overcome the deficiencies of the prior art and provide a data leakage prevention method for e-book readers. By setting file passwords and e-book reader passwords, e-book reading can be protected in an all-round, multiple and effective manner. Private files of server users, preventing data leakage.

In order to achieve the above object, the technical solution adopted in the present invention is: a data leakage prevention method for an e-book reader, based on a password setting module, an encryption module and a password verification module connected to the sqlite3 database in the Android system. The password setting module includes file encryption and machine encryption. Users can choose file encryption or machine encryption or file and machine encryption at the same time according to their needs; cancel password module includes file decryption and machine decryption; password verification module includes open file, power-on password verification, and USB password verification .

The data required for file encryption, file opening, file decryption, machine encryption, power-on password verification, USB password verification, and machine decryption needs to be stored in the sqlite3 database. The sqlite3 database is a data security storage database provided by the Android system.

File encryption is to save the file password or e-book reader password set by the user to the sqlite3 database, a data security storage mechanism provided by the Android system; to open the file is to open the document on the e-book reader, you need to access the password record in the sqlite3 database To do password verification; file decryption is to directly delete the corresponding record from the sqlite3 database; password verification is to compare the user's current password input with the password record in the sqlite3 database; power-on password verification and USB password verification are for users to use e-books When the reader is turned on or connected to the computer via USB, it is necessary to verify the password by accessing the password record in the sqlite3 database; the machine decrypts to enter the sqlite3 database of the e-book, deletes the machine password, and deletes the power-on password and the USB password at the same time.

Compared with the prior art, the beneficial effect of the present invention is: the e-book reader through machine encryption and file encryption realizes the function that others cannot view the user's private files through a computer or directly using any means such as an e-book reader, comprehensive, Thoroughly prevent the user's data leakage, the user can choose file encryption or machine encryption or file and machine encryption at the same time according to the needs, and decide the level of encryption.

Description of drawings:

Fig. 1 is a system block diagram of the present invention;

Fig. 2 is machine encryption flowchart of the present invention;

Fig. 3 is the flow chart of power-on password verification of the present invention;

Fig. 4 is the flow chart of USB password verification of the present invention;

Fig. 5 is the file encryption flowchart of the present invention;

Fig. 6 is a flow chart of opening a file in the present invention.

Detailed ways:

The central idea of the present invention is to overcome the deficiencies of the prior art, and provide a data leakage prevention method for e-book readers, which can comprehensively, multiplex, and effectively protect the private files of users of e-book readers and prevent data leakage . The following will describe in detail with reference to the accompanying drawings in conjunction with the embodiments, so as to further explain the technical features and advantages of the present invention.

The system principle block diagram of the present invention is shown in Figure 1, a kind of data leakage prevention method for e-book reader, based on setting password module, canceling encryption module, password verification module connected with sqlite3 database in Android system. The password setting module includes file encryption and machine encryption. Users can choose file encryption or machine encryption or file and machine encryption at the same time according to their needs; cancel password module includes file decryption and machine decryption; password verification module includes open file, power-on password verification, and USB password verification .

The data required for file encryption, file opening, file decryption, machine encryption, power-on password verification, USB password verification, and machine decryption needs to be stored in the sqlite3 database. The sqlite3 database is a data security storage database provided by the Android system.

File encryption is to save the file password or e-book reader password set by the user to the sqlite3 database, a data security storage mechanism provided by the Android system; to open the file is to open the document on the e-book reader, you need to access the password record in the sqlite3 database To do password verification; file decryption is to directly delete the corresponding record from the sqlite3 database; password verification is to compare the user's current password input with the password record in the sqlite3 database; power-on password verification and USB password verification are for users to use e-books When the reader is turned on or connected to the computer via USB, it is necessary to verify the password by accessing the password record in the sqlite3 database; the machine decrypts to enter the sqlite3 database of the e-book, deletes the machine password, and deletes the power-on password and the USB password at the same time.

The machine encryption module includes setting a power-on password and a USB password. Once the power-on password and the USB password are set, the two passwords are the same, and are unified as the e-book reader password set by the user. The user group must set the power-on password when setting the password of the e-book reader, but the user can choose whether to set the USB password at the same time according to the needs. When the user sets the power-on password but does not set the USB password, the user needs to pass the power-on password verification to use the e-book reader normally, and directly connects to the computer through the USB, and operates the files on the e-book reader flash through the computer. When the user sets the power-on password and the USB password at the same time, when connecting the USB, it needs to be verified by the USB password before it can be mounted on the computer.

Machine encryption includes power-on password and USB password setting. The flow chart of machine encryption is shown in Figure 2. The steps are as follows:

Step 1. Enter the e-book application settings;

Step 2, carry out machine encryption;

Step 3. The user judges whether to encrypt the USB according to the needs. If the USB is encrypted, there will be a power-on password and a USB password at the same time. If it is not encrypted, only the power-on password will exist;

Step 4. The encryption is successful.

The decryption steps of machine encryption are as follows: first enter the e-book settings, and then delete the e-book reader password, then the power-on password and USB password will be deleted at the same time.

The verification flowchart of the power-on password in machine encryption is shown in Figure 3, and the steps are as follows:

Step 1, the user starts the e-book reader;

Step 2. The Android system will send a boot completion broadcast, and the application layer receives the boot completion broadcast from the Android system, and first accesses the sqlite3 database to check whether a power-on password is set;

Step 3. If the e-book reader does not set a power-on password, it will go to the main interface and start using the e-book reader normally. If the e-book reader sets a power-on password, it will start a new task, Activy, and a password verification screen will pop up, entering the password verification stage. If you pass the password verification, you will go to the main interface and start using the e-book reader normally. If you fail the password verification, you cannot use it.

The flow chart of USB password verification in machine encryption is shown in Figure 4, and the steps are as follows:

Step 1. Connect the e-book reader to the computer via USB;

Step 2. The application layer receives the USB connection broadcast from the android system, and first queries the sqlite3 database to check whether the USB password is set;

Step 3. If no password is set, it will be automatically mounted to the computer, without the need for the user to manually mount it. If the password is set, password verification is required. If the password verification fails, the e-book reader cannot be mounted to the computer, and the user cannot access the e-book reader through the computer. The content of the flash file in the file is operated, and if the password verification passes, it will be mounted normally.

The file encryption flowchart is shown in Figure 5, and the steps are as follows:

Step 101, enter the e-book application settings;

Step 102, setting file password;

Step 103, confirm that the password setting is completed;

Step 104, enter the file list;

Step 105, click on the encryption menu;

Step 106, select the file to be encrypted;

Step 107, confirm the password again, and the encryption is successful.

In step 102, if a password has been set, the original password can be deleted and then reset or modified.

File encryption can also be done in the following way, and the steps are as follows:

Step 201, enter the file list;

Step 202, click on the encryption menu to determine whether the file is encrypted, if the file is not encrypted, then perform step 20③, and if the file is encrypted, then skip to step 203;

Step 20③, automatically enter the file password setting interface, and set the file password;

Step 20④, confirm that the password setting is completed, and automatically jump back to the file list;

Step 203/20⑤, select the file to be encrypted;

Step 204/20⑥, confirm the password again, and the encryption is successful.

All encrypted files have the same password, which avoids the cumbersome process of requiring the user to enter the password every time the file is encrypted.

The flow chart of opening encrypted files is shown in Figure 6, and the steps are as follows:

Step 1. Enter the file list, select a file to open

Step 2. Access the sqlite3 database password record to determine whether the file is encrypted;

Step 3: If the file is not encrypted, the file is opened; if the file is encrypted, the system creates an Activity interface, enters the password verification stage, and if the verification passes, the file is opened.

The steps of decrypting a single encrypted file are as follows: enter the file list, click the decryption menu, select the encrypted file, confirm the file to be decrypted, the system creates an Activity interface, and enters the password verification stage. If the verification passes, the encryption status of the selected file is determined. was lifted.

The steps of the decryption method for all encrypted files are as follows: enter the e-book settings in the e-book reader, delete the file password, then all encrypted files will be decrypted, and the file password of the e-book is not issued yet.

Users can choose machine encryption or file encryption or both machine and file encryption according to their needs, which is convenient and fast, and it is easy to realize the data leakage prevention of e-book readers.

Although the present invention has made a clear and complete description of machine encryption and file encryption through specific embodiments, the present invention is not limited to the embodiments, and for those skilled in the art, all improvements made based on the present invention and options, are possible and are included in the present invention.

Claims (8)

1. A data leakage prevention method for e-book reader, based on the setting password module, canceling encryption module, password verification module connected with sqlite3 database in Android system, it is characterized in that, it is characterized in that, described machine encryption Including power-on password and USB password settings, the steps of machine encryption are as follows: Step 1. Enter the e-book application settings; Step 2, carry out machine encryption; Step 3. The user judges whether to encrypt the USB according to the needs. If the USB is encrypted, there will be a power-on password and a USB password at the same time. If it is not encrypted, only the power-on password will exist; Step 4. The encryption is successful. 2. The data leakage prevention method for e-book readers according to claim 1, wherein the decryption steps of the machine encryption are as follows: first enter the e-book settings, then delete the e-book reader password, then Power-on password and USB password will be deleted at the same time. 3. the data leakage prevention method for e-book reader according to claim 2, is characterized in that, the verification step of the power-on password in described machine encryption is as follows: Step 1, the user starts the e-book reader; Step 2. The Android system will send a boot completion broadcast, and the application layer receives the boot completion broadcast from the Android system, and first accesses the sqlite3 database to check whether a power-on password is set; Step 3. If the e-book reader does not set a power-on password, it will go to the main interface and start using the e-book reader normally. If the e-book reader sets a power-on password, it will start a new task, Activy, and a password verification screen will pop up, entering the password verification stage. If you pass the password verification, you will go to the main interface and start using the e-book reader normally. If you fail the password verification, you cannot use it. 4. the data leakage prevention method for e-book reader according to claim 3, is characterized in that, the step of the USB password verification in described machine encryption is as follows: Step 1. Connect the e-book reader to the computer via USB; Step 2. The application layer receives the USB connection broadcast from the android system, and first queries the sqlite3 database to check whether the USB password is set; Step 3. If no password is set, it will be automatically mounted to the computer, without the need for the user to manually mount it. If the password is set, password verification is required. If the password verification fails, the e-book reader cannot be mounted to the computer, and the user cannot access the e-book reader through the computer. The content of the flash file in the file is operated, and if the password verification passes, it will be mounted normally. 5. a data leakage prevention method for e-book reader, based on setting password module, canceling encryption module, password verification module connected with sqlite3 database in Android system, it is characterized in that, described file encryption step is as follows: Step 101, enter the e-book application settings; Step 102, setting file password; Step 103, confirm that the password setting is completed; Step 104, enter the file list; Step 105, click on the encryption menu; Step 106, select the file to be encrypted; Step 107, confirm the password again, and the encryption is successful. 6. The data leakage prevention method for an e-book reader according to claim 5, wherein the step of opening the encrypted file is as follows: Step 1. Enter the file list, select a file to open Step 2. Access the sqlite3 database password record to determine whether the file is encrypted; Step 3: If the file is not encrypted, the file is opened; if the file is encrypted, the system creates an Activity interface, enters the password verification stage, and if the verification passes, the file is opened. 7. The data leakage prevention method for an e-book reader according to claim 6, wherein the steps of the decryption method of the single encrypted file are as follows: enter the file list, click on the decryption menu, and select the encrypted file. file, confirm the file to be decrypted, the system creates an Activity interface, enters the password verification stage, and the encryption status of the selected file is released if the verification is passed. 8. The data leakage prevention method for an e-book reader according to claim 6, wherein the steps of the decryption method for all encrypted files are as follows: enter the e-book setting in the e-book reader, delete the file password, all encrypted files will be decrypted, and the file password of the e-book is not yet set.

Images