JPEG image robustness steganography method based on serial concatenated code and DCT coefficient relative relationship

Abstract

The invention relates to the technical field of information hiding, and particularly relates to a JPEG image robustness steganography method based on a serial concatenated code and a DCT coefficient relative relationship. The JPEG image robustness steganography method based on the serial concatenated code and the DCT coefficient relative relationship comprises the steps of determining a modification area; designing a corresponding distortion function; encoding a to-be-embedded message by using an error correcting code; embedding the error correcting code through robustness steganography; performing JPEG compression; obtaining an information stream containing errors by using steganographic translated code, and correcting errors by using a translated code of the error correcting code; and obtaining the original embedded message. JPEG compression attacks of different quality factors can be defended in a larger range, the embedded message can be extracted completely at a higher probability, further, for same secret information, the method has higher detection resistance.

Description

technical field [0001] The invention relates to the technical field of information hiding, in particular to a JPEG image robust steganography method based on the relative relationship between serial concatenated codes and DCT coefficients. Background technique [0002] Steganography is a technique of constructing a covert communication channel using public carriers. In recent years, with the development of mobile communication technology, more and more digital carriers are sent and received by smart mobile terminals. However, due to the limitations of bandwidth, tariffs, and traffic, terminals often damage the carriers transmitted on such channels. Compression, so that classical steganography cannot correctly extract embedded messages in such cases. Therefore, it is of great practical value to study steganographic algorithms that can completely extract embedded messages in such channels and have stronger resistance to steganographic detection than robust watermarking algori...

AI Technical Summary

Problems solved by technology

However, when the algorithm is resistant to JPEG compression, when the quality factor of the JPEG compression attack is different from the quality factor of the carrier image, it is difficult to extract the secret message correctly. In this case, there is about 1% error in the extracted message, which leads to Some problems in practical applications, how to reduce the error rate, ensure that the message can be extracted correctly with a high probability, and at the same time improve its security, that is, the resistance to detection, is the current problem that needs to be solved in robust steganography

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