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Data encryption and decryption method and data encryption and decryption system

A technology of data encryption and encryption algorithm, which is applied in transmission systems, electrical components, etc., can solve the problems of cumbersome interaction process and low efficiency of data encryption transmission, and achieve the effect of improving efficiency

Active Publication Date: 2020-01-17
HANGZHOU HIKVISION DIGITAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Regardless of the data encryption and decryption methods mentioned above, both the sender's device and the receiver's device need to determine the encryption and decryption keys in advance. The interaction process is relatively cumbersome, and the efficiency of data encryption and transmission is low, especially not suitable for scenarios that only require one data encryption and transmission.

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  • Data encryption and decryption method and data encryption and decryption system
  • Data encryption and decryption method and data encryption and decryption system
  • Data encryption and decryption method and data encryption and decryption system

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Embodiment approach

[0107] Since there may be dangers of tampering and forgery during the data transmission process, in order to facilitate the receiving device to verify the authenticity of the target data it receives, as an implementation of the embodiment of the present invention, the above method may also include:

[0108] calculating a hash value corresponding to the execution program; and sending the hash value to the recipient device.

[0109] Since the hash value can be used as a fixed-size unique value representing a large amount of data, small changes in the data can produce unpredictable large changes in the hash value, so the sender device and the receiver device can use the hash value as a measurement target The standard of data authenticity.

[0110] The sender device can calculate the hash value corresponding to the above execution program, and send the calculated hash value to the receiver device, so that after receiving the target data and the hash value, the receiver device can ...

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Abstract

The embodiment of the invention provides a data encryption method, a data decryption method and a data encryption and decryption system, and the data encryption method is applied to sender equipment and comprises the steps: obtaining source data; performing encryption processing on the source data by adopting a preset encryption algorithm to obtain encrypted data; generating a decryption program corresponding to a preset encryption algorithm according to the preset encryption algorithm; generating an execution program including the encrypted data and a decryption program; and performing presetprocessing on the execution program to obtain target data, and sending the target data to the receiver device. Receiver equipment can process target data after receiving the target data to obtain anexecution program, and source data can be obtained by running the execution program. Visibly, the sender equipment and the receiver equipment do not need to determine the encryption and decryption secret keys in advance and can complete data encryption transmission without tedious interaction, so that the data encryption transmission efficiency is greatly improved.

Description

technical field [0001] The invention relates to the technical field of data encryption processing, in particular to a data encryption and decryption method and a data encryption and decryption system. Background technique [0002] During data transmission, due to the high security requirements of some data, encrypted transmission is required during transmission. In order to realize the encrypted transmission of data, the sending device can encrypt the source data according to the agreed encryption method, and send the encrypted data to the receiving device, and then, after receiving the encrypted data, the receiving device can The decryption method corresponding to the encryption method is used to decrypt the encrypted data to obtain the source data. At this point, the entire data encryption transmission process is completed. [0003] There are generally two encryption and decryption methods when encrypting and transmitting source data, which are symmetric encryption and as...

Claims

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Application Information

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IPC IPC(8): H04L29/06
CPCH04L63/0428H04L63/205
Inventor 袁欣驰康卫昌程建
Owner HANGZHOU HIKVISION DIGITAL TECH