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...

AI Technical Summary

Problems solved by technology

[0008] 1. In the existing multimedia-based carrierless concealment schemes, the problem of carrier modification in channel transmission cannot be well solved. If the channel attributes of the carrier are modified, it is likely that the secret message cannot be recovered

[0009] 2. In the existing multimedia-based carrierless concealment scheme, multiple carriers are required for continuous information transmission. This feature is too obvious, and it is not easy to control the semantic features of the picture. These greatly increase the risk of steganographic behavior being detected. ;

[0010] 3. In the existing blockchain-based carrierless concealment scheme BLOCCE scheme, the channel capacity is too low, and each single output transaction can only embed 1 bit of secret information, and the information transmission efficiency is poor;

[0011] 4. Regardless of the carrierless solution, a carrier database needs to be maintained, the retrieval process is cumbersome, and resource search costs are high

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