Implementation of reversible Data Hiding in Encrypted Image using A-S Algorithm

Data encryption is the best way to provide secure communication. The paper presents a novel approach to data hiding using a symmetric stream cipher known as A-S Algorithm. Here the user can have two keys: Encryption Key and Data Hiding Key. Using the A-S Algorithm the image encryption is performed. After encryption the additional data will be hided in the encrypted image with the use of data hiding key. For extraction of the hidden data first apply decryption algorithm with the use of the key and then extract the additional data. The computational complexity of the proposed method is lesser than that of the existing methods and the performance is much higher. The novel approach only requires very feeble amount of time for the conversion. The algorithm can be applied to any kind of data such as images, videos, audios, etc. Here the main concentration is given to Data Hiding in Encrypted Images.