Embedding method and extracting method for wav-format audio information

Abstract

The invention discloses an embedding method for wav-format audio information. The embedding method comprises the following steps of: inputting a wav-format audio, a message needing to be embedded in the wav-format audio, of a user, a first algorithm parameter and a second algorithm parameter; carrying out formatting processing on the message needing to be embedded in the wav-format audio so as to generate a protocol paragraph containing a paragraph header identifier, a checksum, the message needing to be embedded in the wav-format audio, and a paragraph tail identifier; encrypting a random offset number, the first algorithm parameter and the second algorithm parameter to be 16-bit, 16-bit and 32-bit binary bit strings, setting the embedded bit number to 0, selecting the first sampling point of the (64+the random offset number) frame of the wav-format audio as a sampling point i0, taking every k continuous sampling points as a group, wherein k is a step length, and calculating the audio energies EA and EB of the group A={i0, i1, i2...ik-1} and the adjacent group B={ik, ik+1, i k+2...i2k-1} respectively by virtue of the following formulas; circulating the grouping calculation operation.

Description

technical field [0001] The invention belongs to the field of computer network communication, and more specifically relates to an embedding method and an extraction method for wav format audio information. Background technique [0002] With the rapid development of the mobile Internet, voice communication based on mobile clients (such as WeChat, mobile QQ, Skype, etc.) is gradually becoming a new means of public communication. As a common carrier of steganography, audio resources in speech communication are being paid more and more attention by researchers. Currently known solutions related to audio and speech technology can be mainly divided into two categories. The first category is steganography and steganalysis algorithms for audio in different formats. This type of scheme mainly uses the combination of traditional steganographic technology and audio compression standards in different formats to achieve information steganography for a specific purpose. The second catego...

AI Technical Summary

Problems solved by technology

[0004] For the above defects or improvement needs of the prior art, the present invention provides an embedding method and an extraction method for wav format audio information, which are easy to implement and can directly form application software installed on the operating system (such as the Android operating system). Furthermore, it can be connected with social software such as WeChat to solve the technical problems of poor implementability and unclear application occasions in existing methods; and the invention algorithm has low complexity and is suitable for mobile applications with weak computing power. It is carried out on the platform, which solves the problem of too high time complexity in the existing methods; the robustness of the algorithm is improved through energy group calculation and structured repeated embedding, and it solves the problem of poor robustness of the existing algorithms under harsh and complex network conditions. Strong technical problem; through the protocol-based embedded extraction scheme, the technical problem that the message cannot be extracted in real time and randomly in the existing method is solved

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