Carrier-free steganography method and system based on blockchain private key mapping

Abstract

The invention discloses a carrier-free steganography method and system based on blockchain private key mapping. The carrier-free steganography method comprises the steps that: a message sender and a message receiver generate the same private key database respectively; the message sender converts the secret message into one or more serial numbers to obtain corresponding private keys, calculates a public key address of each corresponding private key, takes each public key address as a receiving address in a transaction order, and broadcasts the transaction order on the blockchain; and the message receiver generates a plurality of alternative addresses according to the private key database, obtains a corresponding private key in combination with the receiving address, and recovers the secret message. The blockchain information is used as a carrier, so that the message receiving consistency of two communication parties and the robustness to link noise are realized, the risk that carrier statistical information exposes communication facts is eliminated, the information transmission efficiency is improved, and the resource search overhead is greatly reduced.

Description

technical field

[0001] The invention belongs to the field of computer information hiding, and proposes a carrierless steganography method and system based on block chain private key mapping. Background technique

[0002] Covert communication technology is a technology that enables people to communicate safely on unsafe channels. Compared with encrypted communication methods, covert communication can also hide the communication behavior itself, so it has a broader application prospect than encryption.

[0003] The general covert communication scheme is to hide the secret information in the carrier in a way that the third party cannot perceive, and transmit or release the carrier through an open channel. However, this concealment method needs to modify the carrier information, and the traces of modification can be easily detected by special steganographic detection methods, so safe covert communication is facing a huge challenge.

[0004] Therefore, the information hiding sc...

Examples

Embodiment Construction

[0043] Below in conjunction with accompanying drawing, the present invention will be further described through embodiment.

[0044] A carrierless covert communication scheme based on block chain private key mapping of the present invention comprises the following steps:

[0045] Step 1: Seed sharing: Both parties in the communication pre-generate random number seeds and communicate a unified random number generation algorithm;

[0046] Step 2: Create a table of the private key database: the two parties establish a private key database in a certain communication, and obtain the one-to-one mapping between the secret message and the private key through the serial number;

[0047] Step 3: Information embedding: The message sender selects the corresponding private key in the private key database according to the secret message;

[0048] Step 4: Confidential transactions on the chain: The message sender obtains the corresponding public key of the selected private key through the bl...

technical field

[0001] The invention belongs to the field of computer information hiding, and proposes a carrierless steganography method and system based on block chain private key mapping. Background technique

[0002] Covert communication technology is a technology that enables people to communicate safely on unsafe channels. Compared with encrypted communication methods, covert communication can also hide the communication behavior itself, so it has a broader application prospect than encryption.

[0003] The general covert communication scheme is to hide the secret information in the carrier in a way that the third party cannot perceive, and transmit or release the carrier through an open channel. However, this concealment method needs to modify the carrier information, and the traces of modification can be easily detected by special steganographic detection methods, so safe covert communication is facing a huge challenge.

[0004] Therefore, the information hiding sc...

Examples

Embodiment Construction

[0043] Below in conjunction with accompanying drawing, the present invention will be further described through embodiment.

[0044] A carrierless covert communication scheme based on block chain private key mapping of the present invention comprises the following steps:

[0045] Step 1: Seed sharing: Both parties in the communication pre-generate random number seeds and communicate a unified random number generation algorithm;

[0046] Step 2: Create a table of the private key database: the two parties establish a private key database in a certain communication, and obtain the one-to-one mapping between the secret message and the private key through the serial number;

[0047] Step 3: Information embedding: The message sender selects the corresponding private key in the private key database according to the secret message;

[0048] Step 4: Confidential transactions on the chain: The message sender obtains the corresponding public key of the selected private key through the bl...

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