Author here. I based on a lib that used the word "encrypt" at C++ level mistakenly, but I should have fixed it. I do know the meanings but I needed to implement it fast to use on a personal project.
I'd appreciate if you opened an issue instead of commenting like that, but I did the fix anwyay: https://git.io/vznTU
Thanks! You can use the new API in v0.5.0 if you want.