An amended RSA algorithm for secure communication

One of the foremost challenges faced while communicating in this digitized world is security. The need for legitimate and accredited information exchange is so great that it has become one among the major research areas today. This study presents a three layer security model which expedites a safe and sound information exchange between the end users. The message from the sender is first scrambled using RSA algorithm and the cipher text is cloaked within an image. The correct stego-image is shared with the receiver only if he answers the previously shared (only between sender and receiver; undisclosed to others) question correctly. The receiver first gleans the cipher text from the stego-image and thenceforth proceeds to crack the extracted cipher text to obtain the original message.