Design and Implementation of Steganography Along with Secured Message Services in Mobile Phones

Design and Implementation of Steganography along with secured message services in Mobile Phones is used to provide security to the data that flows across the mobiles. Two people may communicate securely by encrypting the message sent between them. Now a day, several methods are used for communicating secret messages for defense purpose or in order to ensure the privacy of communication between two parties. So we go for hiding information in ways that prevent its detection. Internet and Mobile is widely used for communication. Multimedia Messaging (MMS) and Short Messaging Service (SMS) are the popular services provided by the telecommunication companies. In MMS we can easily send picture with text message. In SMS we can send text only. Mostly used techniques for secure communication are Cryptography and Steganography. Steganography is the most reliable technique for hidden communication. Hiding information, especially in images has been an alternative solution for secret communication. There are so many techniques for steganography and cryptography. Mostly used techniques are image steganography and there are so many algorithms for this. In this paper we are presenting a technique using cryptography and steganography for securing information over mobile in MMS. Here we are using Discrete Cosine transform (DCT) for image steganography and tiny encryption algorithm for cryptography. Tiny encryption algorithm is block cipher algorithm. It is simple and fast but best for mobile application. Keywords—Cryptography, Discrete cosine transform, F5 Algorithm, Messaging, Steganography.