What is it about?
In a digital environment, secure data transfer is not possible via an unsecured medium due to intruders or hackers who manipulate data in an unauthorized manner. Data can be transmitted safely by using data hiding methods to prevent data leakage. Both data hiding and data encryption are used in this work to give dual safety. A speech signal file (.wav) has been invisible after being encrypted in a video file (.avi) through three stages. The first stage involved scrambling bits using a Brownian motion algorithm, scrambling blocks using a circle map algorithm, and finally shuffling the speech signal as a whole. The second stage involved encrypting the scrambled speech signal file with the ABC optimization algorithm. In the third stage, we used the k-means and least significant bit (LSB) algorithms for hiding. The paper results were very successful in encrypting a speech signal file that was difficult to recognize. That has been made possible by employing a multi-level scrambling approach. The measurements SNR, SNRseg, CC, LLR, PSNR, MSE, SSIM, and PRD are used to evaluate the ability of the encryption and hidden strategies. The steganography result has well relative to the difficulties of hiding the major speech signal file after encrypting and retrieving it without altering its contents.
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Why is it important?
Data security is achieved through two main techniques, encryption objectives: secrecy, integrity, and availability. Recently, video files are the most widespread on the internet, so in our paper, we have hidden the speech files inside video files. The goal of the research is to maintain the quality of the sent videos with the least distortion, even though they contain speech files that are characterized by their large size. Due to the difficulty in dealing with speech signal files, when encrypting a signal, its qualities must be preserved and fully retrieved so that the speech signal content does not lose its meaning. So we tried to increase the work on the scrambling stage and consider it as a basic stage in encryption to ensure the difficulty of retrieving the speech signal file and the difficulty of penetrating it using the key in the encryption stage. As for the hiding stage, the difficulty lay in how to hide the huge number of bits of the large-sized speech signal file in the video file frames while preserving the clarity of the frame, as well as distributing these bits in a way that makes it difficult to retrieve them by any penetration attempt.
Perspectives
We noticed the scarcity of work in the field of hiding speech signal files in video files due to the difficulty of providing sufficient space and safety, although speech signal files are the fastest and easiest way for human interaction in presenting their intellectual content, which we can notice, for example, in the attempts of university professors to hide audio recordings of questions that can be directed during the video presentation, or speech files for a doctor who presents an innovative treatment method which he/she does not wish to circulate except to specific people, and so hides it in the video. It is also useful for an institution to hide the data of its staff or a description of its commercial dealings secretly in the videos of the institution, or a story can be hidden when sending via the internet, in order to preserve property rights, as only individuals who pay publishing fees can hear the audio file.
Dr. amal Hameed Khaleel
University of Basrah
Read the Original
This page is a summary of: Hiding speech in video using swarm optimization and data mining, January 2023, American Institute of Physics,
DOI: 10.1063/5.0121799.
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