File Encryption-Decryption using Java

Data has been the most valued asset of any industry throughout the course of time. And with the advent of the Internet and virtual platforms, data exchange via text files or media files has been accelerated multiple folds. However, the increase in the amount of data exchange also makes private data more vulnerable to external attacks. Multiple methods have been implemented to ensure safe and reliable pathways of exchanging data like securing the network-line via a VPN or using enhanced communication protocols like FTP(File Transfer Protocol) or SMTP(Secured Mail Transfer Protocol). Even though there have been mulitple methods to secure data transfer ways, the actual data still remains vulnerable and ready to use should these systems get overridden. Instead, a better method might be to actually encrypt the data and ensure that the main data stays independently secure apart from the secure pathways created. To address this specific issue, this paper proposes a system developed purely using java algorithms that can encrypt media files and decrypt them to protect the data they contain. Three different types of algorithms are applied to protect various types of files like mp4, png, jpg, pdf, doc, xml, etc.