An efficient and secure technique for image steganography using a hash function

Abstract

Steganography is a technique in which a person hides information in digital media. The message sent by this technique is so secret that other people cannot even imagine the information’s existence. This article entails developing a mechanism for communicating one-on-one with individuals by concealing information from the rest of the group. Based on their availability, digital images are the most suited components for use as transmitters when compared to other objects available on the internet. The proposed technique encrypts a message within an image. There are several steganographic techniques for hiding hidden information in photographs, some of which are more difficult than others, and each has its strengths and weaknesses. The encryption mechanism employed may have different requirements depending on the application. For example, certain applications may require complete invisibility of the key information, while others may require the concealment of a larger secret message. In this research, we proposed a technique that converts plain text to ciphertext and encodes it in a picture using up to the four least significant bit (LSB) based on a hash function. The LSBs of the image pixel values are used to substitute pieces of text. Human eyes cannot predict the variation between the initial Image and the resulting image since only the LSBs are modified. The proposed technique is compared with state-of-the-art techniques. The results reveal that the proposed technique outperforms the existing techniques concerning security and efficiency with adequate MSE and PSNR.

Flexible Multi-Layered Security System: Secure 6G Mobile Network Considerations

“…Steganography hides secret data in a public file to prevent visual detection.Steganography is technique of encrypting messages into other media assets [55].Steganography can be divided into two types: spatial-domain and frequency-domain. The spatial domain-based data hiding techniques embed the secret data by modifying the pixel values directly using the techniques least significant bit (LSB) and most significant bit (MSB).The frequency domain-based data hiding techniques first transforms the original image intofrequency coefficients, and then the secret data is embedded into the transformed frequencycoefficients.Transformations that arecommonly used include discrete cosine transform (DCT), discrete wavelet transform(DWT) and singular value decomposition (SVD) [56][57].This paper will use LSB and SVD as data hiding techniques in the proposed vision of securing 6G.…”

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Hiding algorithm based fused images and Caesar cipher with intelligent security enhancement

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