Still improving the application. I want everything to be the best as possible. I fixed some minor bugs in fronted, mostly with the crypto service. I had some problems with the sharing of files, I realized I was also sharing the DEK of the user, which is really a problem since the receiver could, from that moment, decrypt every sender file.
After fixing it I improved some things in the backend, like the process of uploading and downloading files. Another important thing I fixed is the preview. The problem is that before I was opening the file directly in RAM, which, as I explained in some prev devlog, is a problem, since I have only 2 gb of ram. The important thing is that I was able to fix it, by opening it on disk.