Cognitive Spread Spectrum Crypto Data Transformation Using OFDM for Improved SNR

The most common problem occurs when sending the data from one person to another person due to security problem like hacking the data by tracking the password by third party. So everything will be lost by the user. The proposed system consists of public key cryptography technology. In that, we will implement the communication process through RSA algorithm. Here we take two images (Cover image and secret image). Digital media is nothing but an image, audio, video; here the cover image will act as a digital media. Further, the secret image is embedded with the cover image using two dimensional Discrete Wavelet Transform (DWT) in the presence of spread spectrum carrier.