encrypt and decrypt files
This code comes with absolutely no guarantees! If you use it you do so at your own risk. I take no responsibility for data loss, convictions, death, or anything else.
When considering using a certain cryptography package you have to assume an adversary with certain capabilities. The tools you need to use defending agains an adversary with virtually unlimited resources (think hostile government) are certainly different from the ones you might use defending against the prying eyes of your siblings. While I do not guarantee anything I would certainly not recommend this package in the first case but personally find it sufficient in the latter case.
This code is released under the ISC license, an permissive free software license similar to the BSD and MIT License but shorter. See the file LICENSE for the full text.