Ciphertext tracking method based on three-dimensional stream fingerprint
A three-dimensional, fingerprint technology, applied in digital transmission systems, electrical components, transmission systems, etc., can solve the problem of data traceability and other problems, and achieve the effect of good tracking effect, wide scene, and good robustness.
Pending Publication Date: 2022-01-21
佳缘科技股份有限公司
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Problems solved by technology
(3) The tracking technology based on the IP header is mainly to increase the routing field in the IP data packet header, and detect and continue writing at each forwarding routing node, so as to realize the tracking and tracing of the ciphertext transmission path; the above three existing There are flaws in the technology, and it is impossible to achieve safe and stable data traceability
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[0066] The tracking technology based on flow fingerprint is to embed a meaningful data flow identity information into the data message through precoding and decoding, so as to realize the precise tracking of the ciphertext. Such as figure 1 and figure 2 As shown, the specific implementation method is:
[0067] S01: The server monitors the flow of the data flow and intercepts the flow data message, based on the five-tuple information of the flow data (source IP address, source port, destination IP address, destination port, and transport layer protocol. collection) to generate flow fingerprints.
[0068] S02: Extract the ICC and IPD feature information of the carrier, and perform orthogonal processing on the two-dimensional carrier. Since the technical solution described in the present invention uses multiple carriers to jointly carry flow fingerprints, it is first necessary to ensure that the carriers are orthogonal to each other. The so-called mutually orthogonal carrier...
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The invention discloses a ciphertext tracking method based on a three-dimensional stream fingerprint, and the method specifically comprises the steps: obtaining an exchanged data stream, and obtaining a stream fingerprint according to the quintuple information of the data stream; extracting ICC and IPD characteristic information of a carrier, and preprocessing the carrier to obtain an ICC-based carrier and an IPD-based carrier; embedding the stream fingerprint into the ICC-based carrier; embedding the stream fingerprint into the IPD-based carrier; and detecting the stream fingerprints embedded in the ICC-based carrier and the IPD-based carrier, and performing access control decision based on a preset security policy. The stream fingerprint information is embedded, so that accurate tracking of the ciphertext can be realized; by changing the characteristics of the data stream and on the basis of not carrying out processing such as repackaging on the IP data message, the tracking of the ciphertext data is realized, the complexity of data packet processing is effectively reduced, and a good tracking effect on the ciphertext data stream with large traffic and low latency is achieved.
Description
technical field [0001] The invention relates to the field of ciphertext tracking, in particular to a ciphertext tracking method based on three-dimensional flow fingerprints. Background technique [0002] With the advent of the big data era, stream exchange is gradually becoming a new trend in the development of data exchange. It has the characteristics of huge data volume, unpredictable content and low latency. At the same time, with the widespread use of encryption technology in the Internet, encryption such as IPSEC and SSL has become a basic necessity to ensure communication security, whether it is a party and government enterprise or a military unit. However, this also brings greater convenience to attackers. With the increasing number of stream switching applications, the unknowable and untrustworthy stream identities in stream switching can easily lead to problems such as uncontrollable range of stream switching and untraceable switching paths; As a result, commonly ...
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Login to View More IPC IPC(8): H04L9/40
CPCH04L63/126H04L63/10H04L63/1408H04L63/1441
Inventor 朱伟华
Owner 佳缘科技股份有限公司