Image Steganography Using Random Image

Abstract

Now-a-days every person depends on computer and Internet. Security is one of the major problem in public communication systems, the information may be accessed by third parties during the transmission of data through a network. Network security is not sufficient, and cybercrime is also increasing. It is possible to provide more security to data with the combination of cryptography and steganography. Cryptography is basically secret writing and steganography is the method hiding data in an object. Cryptography and steganography both methods can be used for preventing, and protecting data from different types of attacks. In the existing system data bits are encrypted and then embedded into cover image using, it results degradation of cover image. The degradation and security of hidden data are the drawbacks. To overcome these drawbacks, a new technique is proposed using random image. Initially text is converted to an image, and it is embedded into a random cover image. The proposed method may provide more security with the help of random image. It is not easy to perform the steg analysis on random image. Performance measures such as MSE, PSNR are showing good results when compared with the existing method.