The encryption method used for encrypting your files is a customized method of Rijandel encryption. But when encrypting your text-documents inside the app itself, you will find out that this is quite different from what Rijandel used. In here, we used a customized version of Base64/Radix64. This project is built on our new technology called HSkey. HSkey is a combined encryption method by using several hard encryption methods and input them all into one single "unbreakable" algorithm.