Privacy Preserving of Data Files & Audio / Video Encryption –Decryption Using AES Algorithm

Recently in many areas like facebook , watsapp and many more social networking site many users upload their personal data, video ,voice recording. This paper proposed and idea of encryption – decryption of any file which user s going to upload on site. The specific site which are providing such kind of functionality needs to adopts this method to secure user data for privacy preserving.So that any hackers or indruder can not directly hike your data. If in exceptional cases someone even hacks the data they will not get the actual file they will only get the encrypted file withoud having a decrypt key for the data. So they never see an original file.This will improve the data security over internet uses. The proposed system wiil used a special Advanced Encryption Standard, also known by its original name Rijndael for secure encryption decryption of audio ,video as well as data files