PData Security using RSA Encryption Combined with Image Steganography

The increasing usage and dependency on Internet has made security of data a priority and a reason of concern. Data on cloud contains all kinds of personal and professional information, and cloud communication opens the doors to interceptions wherein secret information can be extracted by undesirable people with an intention of malicious usage to any extent. Hence certain measures can be taken in order to ensure the security of data on cloud, so that communications cannot be intercepted and if they are then it is difficult to crack the code. Steganography and encryption combined enhance cloud security by providing dual layer protection to the data, as steganography aims at hiding the existence of the data itself and encryption prevents the correct interpretation of the data. We have taken into consideration RSA algorithm for encryption and image steganography for data hiding using LSB technique.