Security means to secure or to protect the valuable information from the unauthorized person from having access. Cryptography is very important in securing data in terms of integrity and confidentiality. Like desktop computers, mobile devices (e.g., Smartphones, tablets, laptops and notebook computers) are also used to store sensitive information. The data may be text, audio, video, image etc. The android devices can be stolen by the fraud or there is always a possibility of data access without owner's permission. In this case, the protection is required for the data stored in devices.