Image steganography on color image using SVD and RSA with 2-1-4-LSB technique

Steganography is the method of covering text within some form of cover file. This paper presents a new method for data communication over an unsecure medium. In this apply RSA to keep data secret and increase security level using encryption and decryption method. Encryption is performed with the help of a key which makes it hard to get the secret message even if the existence of the secret message is exposed. The information is embedded using LSB method. Using SVD, we embed two images one is LSB stego image and other one is secret image. This technique is executed in MATLAB14. The main concept of this research is to hide more data and increase security of image and text without distortion. The experimental analysis is performed utilizing Peak Signal Noise Ratio (PSNR), Embedding time and Mean Square Error (MSE). The proposed result is better from previous one in terms of PSNR which is reached up to 73 dB.