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File encryption method and device

A file encryption and file technology, applied in the field of data security, can solve the problems of file information leakage, file encryption security is not high, and achieve high security effect

Active Publication Date: 2017-05-31
WUHAN DOUYU NETWORK TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the process of realizing the present invention, it is found that the prior art has at least the following problems: since the encryption key is a pre-stored fixed character, it is easy for relevant crackers to invade the mobile terminal to obtain the pre-stored encryption key, and according to the encryption key Decipher the encrypted first data and steal the encrypted file, resulting in the leakage of file information
Therefore, the security of file encryption is not high

Method used

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  • File encryption method and device
  • File encryption method and device

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Embodiment Construction

[0019] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0020] The existing file encryption process mainly encrypts the file through a pre-stored encryption key to obtain encrypted data. Correspondingly, when the file is decrypted, the encrypted data is decrypted by using the pre-stored decryption key. Wherein, the pre-stored encryption key may be generated from preset English characters or numbers, and the encryption key is consistent with the decryption key. Since the encryption key and decryption key are stored locally by the terminal, and the encryption key and decryption key are generated by preset fixed characters, relevant crackers can easily invade the mobile terminal to obtain the pre-stored encryption key. key, and ...

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Abstract

The invention provides a file encryption method and device, and belongs to the technical field of data security. The method comprises the following steps: obtaining a to-be-encrypted first object file and an encryption character string input by a user; analyzing the encryption character string, and generating an encryption key according to an analysis result; and based on the encryption key, adding a file stream corresponding to the first object file to an encryption stream for encryption, and writing the encrypted data in the stored encryption file. According to the file encryption method and device provided by the invention, the to-be-encrypted first object file and the encryption character string input by the user are obtained, the encryption character string is analyzed, the encryption key is generated according to an analysis result, and the file stream corresponding to the first object file is added to the encryption stream for encryption. As the encryption character string is input by the user, the thinking randomness of the user when inputting the encryption character string is very large, and the input character categories are diversified, the correspondingly generated encryption key is hard to break. Therefore, the file encryption security is relatively high.

Description

technical field [0001] The present invention relates to the technical field of data security, and more specifically, to a file encryption method and device. Background technique [0002] With the rapid development of computer network technology and information technology, digital industries such as e-commerce are rapidly rising all over the world. Whether it is a government, an enterprise or an individual, when storing files in storage media, some important files need to be encrypted to prevent information leakage. Therefore, how to encrypt files is a concern of people. The existing file encryption method mainly encrypts the file through a pre-stored encryption key to obtain encrypted data. Correspondingly, the decryption process is mainly to decrypt the encrypted data through the pre-stored decryption key to obtain the decrypted file. Wherein, the encryption key is the same as the decryption key. [0003] In the process of realizing the present invention, it is found th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/08H04L29/06G06F21/60
CPCG06F21/602H04L9/0816H04L9/0861H04L9/0869H04L63/0428
Inventor 丁鹏
Owner WUHAN DOUYU NETWORK TECH CO LTD