When I do a fresh install I am given an option to check the option to encrypt my home directory. What is home directory encryption? And how much my performance degrades if I do so? How to do it on a running pc but not through the option given at the installation.
An encrypted home directory is just like an encrypted hard drive. It simply adds a level of encryption to that in order to protect the files in that directory. There is a very negligible performance degradation that is probably so low that you wouldnt even know unless you measured it with a non encrypted directory