ANDROID BASED APPLICATION FOR FILE ENCRYPTION/DECRYPTION

Computer Engineering

Encryption is the process of encoding a message or information in such a way that only authorized parties can access it and those who are not authorized cannot view the contents. Encryption does not itself prevent interference, but denies the intelligible content to a would-be interceptor. In an encryption scheme, the intended information or message, referred to as plaintext, is encrypted using an encryption algorithm – a cipher – generating cipher text that can be read only if decrypted. Our Proposed System is an android based application that enhances the encryption technique to the next level by encrypting / decrypting the given data using the mobile phone itself. The encryption technique will compress the given text into an image or a file which cannot be viewed by an unauthorized user easily because the encrypting algorithm is different every time. The pixels of the selected image is broken down into tiny bits and the given code is combined with these bits which together will form the encrypted image. Here the data stored is hidden inside the image, while seeing from outside it is viewed as a simple image but only upon applying the encryption key the data and the image will be decrypted and thus it is very secure. There are many software’s which can encrypt or decrypt a file but it will take more process time and memory to complete but using the application the encryption can be done easily and the data can be shared easily.

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