Abstrato

HIGHLY SECURED AND RANDOMIZED IMAGE STEGANOGRAPHIC ALGORITHM

Dr. R.Sridevi

In today’s internet scenario, secured data transfer is very difficult if not impossible due to the technology and computing power availability to the attackers. Hence more robust methods are required to provide a secured data transfer. Though steganographic algorithms are existing, no algorithm is fool proof for long time, as hackers gain more knowledge over time [1]. In this proposed work, a new technique to improve the security of steganographic algorithm by using the high level of randomization is proposed and implemented. It has the high embedding capacity and more robustness in the stego key. In proposed algorithm, message to be transmitted is encrypted. The encrypted message is embedded on image in randomized pixels. The randomness of the position of pixels on which the encrypted message to be embedded will be decided by the stego key. The stego key itself is encrypted and transmitted to other party in a secured form. Hence it is more robust and secured algorithm. The algorithms used for steganography process is Pixel Value Differencing with Modulus (PVDM) [6] and Least Significant Bit(LSB) algorithms[5] with randomization.