Data encryption method and device and data decryption method and device

A technology of data encryption and encryption and decryption algorithms, applied in the field of data decryption methods and devices, and data encryption methods, can solve the problems of low data security and low difficulty in cracking virus databases, and achieve the effect of improving security and increasing difficulty

Active Publication Date: 2017-06-13
TENCENT TECH (SHENZHEN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the problem in the prior art that because the server uses a single encryption algorithm to encrypt the entire virus database, the decryption of the encrypted

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  • Data encryption method and device and data decryption method and device
  • Data encryption method and device and data decryption method and device
  • Data encryption method and device and data decryption method and device

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Example Embodiment

[0043] The exemplary embodiments will be described in detail here, and examples thereof are shown in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present invention. Rather, they are merely examples of devices and methods consistent with some aspects of the present invention as detailed in the appended claims.

[0044] First, introduce several terms involved in this article.

[0045] Anti-virus software (also known as: anti-virus software or anti-virus software): refers to software used to eliminate malicious programs such as viruses and Trojan horses in the terminal. Anti-virus software includes at least an anti-virus engine and virus database.

[0046] Antivirus engine: It is a program th...

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Abstract

The invention discloses a data encryption method and device and a data decryption method and device, belonging to the technical field of computers. The method comprises the following steps: obtaining target data to be encrypted, wherein the target data includes at least two pieces of sub data; obtaining at least two encryption algorithms; and for each piece of sub data in the target data, encrypting the sub data by a target encryption algorithm which is selected from the at least two encryption algorithms to obtain encrypted target data. According to the invention, the problems that the cracking difficulty of the encrypted target data is low for malicious personnel, and the security of the encrypted target data is not high when a server encrypts the target data as a whole by using a single encryption algorithm are solved; and the cracking difficulty of the encrypted target data is increased for the malicious personnel, and the security of the encrypted target data is improved.

Description

technical field [0001] The embodiments of the present invention relate to the field of computers, and in particular, to a data encryption method, a data decryption method, and a device. Background technique [0002] The anti-virus software detects whether the file is a virus through the anti-virus engine to detect whether the characteristic information of the file matches the characteristic information stored in the virus database. When the characteristic information of the file matches the characteristic information in the virus database, it is determined that the file is a virus. Wherein, the antivirus software includes an antivirus engine and a virus database. If the virus database is obtained by a malicious program or a Trojan horse, and the characteristic information, virus name and other data in it are tampered with, it may cause the problem that the antivirus software cannot detect the virus file. Therefore, encrypting the virus database to ensure that the virus data...

Claims

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Application Information

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IPC IPC(8): H04L9/14
CPCH04L9/14
Inventor 崔精兵
Owner TENCENT TECH (SHENZHEN) CO LTD
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