• Sharad S. Hegade
• Dr. S. R. Pande

In digital space, data plays a vital role, so considered an asset. Hence, the sender and recipient must be more cautious during communication. Moreover, data is stolen and altered over the internet during its transmission. During the transmission of data over the internet needs to provide security is essential. Therefore, to provide additional security during data transmission, there are cryptography and steganography methods. In cryptography, the information is scrambled using a secret key, but an intruder can able to identify its existence by seeing it. On the other side, steganography hides the existence of a secret message in the cover work which is not seen by the naked eye easily. This paper introduces a new idea for implementing a blending model of data security using cryptography and steganography. In modified LSB image steganography using a filtering method, the 24-bit color image is used as the cover image. In this image steganography, not all three color channels of each pixel of an image are used for data hiding. That means in the proposed filtering algorithm, a single color channel out of three of every pixel of an image is selected as the candidate color channel for data embedding and also the candidate color channel for each pixel is dependent on the filtering algorithm. For implementing an additional layer of security, before embedding AES encryption is applied to the secret message. The proposed experiment is evaluated by calculating the PSNR, and MSE of the stego image, and using Histogram analysis. The said method produces high PSNR and low MSE.

Data security, Cryptography, Steganography, Filtering method.

"Double Layered Data Security Via AES and Modified LSB Image Steganography Using A Filtering Algorithm", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.10, Issue 11, page no.c137-c145, November-2023, Available :http://www.jetir.org/papers/JETIR2311220.pdf

"Double Layered Data Security Via AES and Modified LSB Image Steganography Using A Filtering Algorithm", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.10, Issue 11, page no. ppc137-c145, November-2023, Available at : http://www.jetir.org/papers/JETIR2311220.pdf