Digital steganography and digital extraction methods with compressed audio as masking carrier

Abstract

The invention discloses digital steganography and digital extraction methods with compressed audio as a masking carrier. In a digital steganography method, the window shape of audio particle data is selected to be used as a steganography object and is switched to realize hiding of bits of secret information, and the code stream length of the compressed audio containing the secret information and the code stream length of the compressed audio containing no secret information are constant, thus the problems of code bit rate increment, document length variation and the like of the whole compressed audio due to steganography operation are avoided, and the safety of the secret information is effectively ensured; and in a digital extraction method, the window shape of the audio particle data corresponding to frame information obtained through decoding is determined, then the bits of the secret information are directly obtained according to the window shape, and because the window shape can be obtained through extraction from the frame information when the frame information of the audio particle data is decoded, the audio particle data does not require to be decoded, thus the real-time property of a secret information extraction process is effectively improved.

Description

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AI Technical Summary

Benefits of technology

This patented technology describes an improved way for securely transmitting hidden messages over communication networks while maintaining their privacy during encryption processing. It achieves these benefits by selecting specific shapes or positions within the message windows based on certain criteria like frequency content, time duration, etc., instead of just adding plaintext characters throughout them. Additionally, it uses compressive audio signals to hide important parts inside the encrypted signal itself, making its analysis easier than traditional methods. Overall, this new approach provides better protection against attacks and allows for more efficient transmission and reduction of computationally expensive processes compared to existing techniques.

Problems solved by technology

This technical problem addressed in this patents relates to improving digital encryption algorithms while maintaining their privacy capabilities during transmission across different media types like broadcast TVs and internet connections.

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