A Timestamp-Based Data Block Correlation Encryption Algorithm
An encryption algorithm and data block technology, applied in the field of data communication, to achieve the effect of fast calculation speed, small insertion delay and simple calculation
Active Publication Date: 2020-06-26
西安前观测控技术有限公司
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[0004] The purpose of the present invention is to provide a time stamp-based data block association encryption algorithm to solve the problems of authenticity and security of video data in the process of real-time video communication in the prior art
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[0069] In the public security video surveillance system, the video acquisition front-end and the control center are transmitted through a public or private network. For the convenience of description, the encryption and decryption device near the video sending end is called an encryption device, and the encryption and decryption device near the video receiving end is called a decryptor. The network port connecting the encryptor to the video source is called port A, the port connecting to the public network is called port B, the port connecting the decryptor to the public network is called port B, and the port connecting to the LAN is called port A.
[0070] The data collected by the front end of the video capture is transmitted to the server through UDP packets, and the format of the UDP packets is shown in Table 1. In this application example, the encryption / decryption device uses the algorithm of the present invention to perform encryption and decryption. In order not to aff...
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The invention belongs to the technical field of data communication, and particularly relates to a data block association encryption algorithm based on timestamps. Hardware encoding and decoding devices are additionally arranged at a transmitting end and a receiving end of data, an address mapping technology is adopted to transform a transmitting data block, data and timestamp characteristics are hidden by adopting a mode of calculating CRC and timestamps, an encryption field is added to the data by adopting a secret key method, and then the data is transmitted. The data stream is decoded at areceiving end, and the safety of data communication is judged by utilizing the continuous characteristics of the timestamps. The method adopts replacement, CRC calculation, secret key calculation andtimestamp calculation adopted, calculation is simple, system resource consumption is low, the calculation method is very suitable for being achieved through a programmable device (FPGA), the calculation speed is high, the insertion delay is small, and the method is suitable for safe data transmission of a large-data-volume continuous real-time communication scene.
Description
technical field [0001] The invention belongs to the technical field of data communication, and in particular relates to a data block association encryption algorithm based on a time stamp. Background technique [0002] At present, during data transmission, the common data authentication method is to process and mark the data by means of data transformation or additional information for part or all of the content of the data block, so that it must be restored by certain rules. The emergence of blockchain technology provides an authentication method based on chronological association between data blocks. [0003] The advantage of the above two data authentication methods is to ensure the authenticity and security of data transmission, but they each have their own limitations. The former only focuses on a certain data block itself, and lacks attention to the relationship between data blocks; the latter is difficult to apply in real-time communication because of the complexity ...
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IPC IPC(8): H04L9/32H04L9/06
CPCH04L9/0618H04L9/3297
Inventor 康前望张渝洲李晓孺刘浩浩康瑞明刘春妮
Owner 西安前观测控技术有限公司