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Secret information transmission method and system based on TCP and UDP

A technology of secret information and transmission method, which is applied in the direction of transmission system, electrical components, etc., can solve the problem of fixed rewriting position, etc., and achieve the effect of improving concealment and robustness, avoiding communication load, and simple and efficient transmission

Active Publication Date: 2020-06-23
江苏新视云科技股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the specificity of the storage covert channel is strong, and the rewriting position is relatively fixed, so the detection method for them is relatively easy

Method used

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  • Secret information transmission method and system based on TCP and UDP
  • Secret information transmission method and system based on TCP and UDP
  • Secret information transmission method and system based on TCP and UDP

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Embodiment Construction

[0020] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.

[0021] figure 1 It is an overall flowchart of the information hiding method of the present invention. The covert channel is constructed with the transport layer protocol TCP and UDP data packets. The sender undergoes two processes of encryption and encoding, and adjusts the sending sequence of TCP and UDP data packets according to the secret information ciphertext S, thereby completing the embedding of the secret information ciphertext S. Secret information is transmitted with TCP and UDP packets. The recipient obtains the plaintext B of the secret information through reverse decoding and decryption, and submits it to the channel monitor for judgment and processing.

[0022] The specific implementation steps are as follows:

[0023] Step 1: Establish a covert channel:

[0024] Due to the wide application of the TCP protocol, many applicati...

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Abstract

The invention discloses a secret information transmission method and system based on TCP and UDP. The method comprises the following steps: (1) establishing a hidden channel; (2) encrypting a secret information plaintext B to be sent to generate a group secret information ciphertext S; (3) embedding the secret information ciphertext S into a TCP and UDP sending window sequence through encoding, sothat the secret information ciphertext S is transmitted along with TCP and UDP data packets; and (4) performing reverse decoding and decryption on the received TCP and UDP message sequences to obtaina secret information plaintext B. According to the invention, an information coding technology is introduced into a transmission sequence of transmission layer protocol TCP and UDP data packets to construct a hidden channel; the transmission of the secret information is simpler, more convenient and more efficient, the additional communication load brought to the existing TCP connection channel isavoided, an information verification mechanism is introduced, and the concealment and robustness of the secret information transmission are further improved.

Description

technical field [0001] The present invention relates to a secret information transmission method and system thereof, in particular to a secret information transmission method and system based on TCP and UDP. Background technique [0002] Covert communication is a technology that hides the information that needs to be transmitted secretly into some carrier information to realize the protection of secret information, and is an important branch of information security. The ease of use and universality of covert channel is the key factor to put covert channel technology into practical application. If a covert channel can easily find the host channel, and there are many optional host channels, it is easy to apply from theory to practice. Due to the extensive application of the TCP protocol, many application layer services are based on the TCP protocol. The TCP protocol is an end-to-end protocol that provides connection-oriented services. During communication, processes such as ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06
CPCH04L63/0428H04L63/065H04L63/166H04L69/16
Inventor 翟江涛崔永富林鹏石怀峰张艳艳付章杰
Owner 江苏新视云科技股份有限公司
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