Secure data transmission for smart phones using steganography

Abstract

Android is Linux based operating system and designed primarily for smart phones. The need for increased security of smart phones data transmission is growing day by day. The need of data security has recently become a thriving and fast moving discipline. Exchange of information between smart phones users is subject to security threats. So there must be an application who overcomes the security threats. This project is about design and implementation of secure smart phones data transmission application using steganography. This application is simple in use and has user-friendly interface. It is implemented in android software development kit. This application implements double security mechanism on data. Data is first encrypted and then it is hidden into image. Image is send to receiver. On the receiving side, application first extract encrypted data from image and then apply decryption technique on encrypted data to extract original data. A change in image before and after hiding data is minor that human eye cannot detect any change. Image does not attract any suspicious attention. This application is achieved its objective of secure data transmission between smart phone users.