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Data encrypting method and device and data decrypting method and device

A data encryption and data decryption technology, applied in encryption devices with shift registers/memory, digital data protection, secure communication devices, etc., can solve problems such as poor security and single security means

Active Publication Date: 2016-07-13
BEIJING SEEYON INTERNET SOFTWARE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To sum up, the existing encryption technology has a relatively simple means of keeping secrets, is easy to crack, and has poor security.

Method used

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  • Data encrypting method and device and data decrypting method and device
  • Data encrypting method and device and data decrypting method and device
  • Data encrypting method and device and data decrypting method and device

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Embodiment Construction

[0103] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. For the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making crea...

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Abstract

The invention relates to the field of data encrypting and decrypting, in particular to a data encrypting method and device and a data decrypting method and device.The data encrypting method comprises the steps that at first, an encryption key and original data are obtained; then, an encryption rule is selected from a preset encryption rule base; the encryption key is adopted for encrypting the original data according to the encryption rule to obtain intermediate data; then, identification information corresponding to the encryption rule is obtained; finally, the intermediate data and the identification information are packaged to generate encrypted data.Compared with the prior art, encryption information does not only depend on the carrier key, the encryption rule is selectively used, and the encryption rule is encrypted; meanwhile, in the file transmitting process, only the identification information of the encryption rule exists in the transmission information, and the specific content of the encryption rule does not exist, so that multi-dimensional encryption is achieved, the encryption means is more complex, the key can not be decrypted easily, and encryption safety is higher.

Description

technical field [0001] The invention relates to the field of data encryption and decryption, in particular to a data encryption method, a data encryption device, a data decryption method and a data decryption device. Background technique [0002] The basic process of data encryption is to process the original plaintext file or data according to a certain algorithm to make it an unreadable piece of code, usually called "ciphertext", so that it can only be read after entering the corresponding key. The original content is displayed, and the purpose of protecting data from being stolen and read by illegal persons is achieved through this method. The inverse of this process is decryption, the process of converting the encoded information into its original data. [0003] A computer file is a unit defined for the purpose of realizing a certain function or part of a certain software function, such as text documents, pictures, programs, etc., and its essence is a collection of data...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F21/60H04L9/06
CPCG06F21/602H04L9/0643
Inventor 姚亚平刘古泉王东旭
Owner BEIJING SEEYON INTERNET SOFTWARE CORP
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