gnupg not found

I am trying to install [rvm](http://rvm.io) . But I don't have gnupg/gpg installed. So I tried to install it using brew: brew install gnupg But after it's installed (verified by brew list), I cannot use gnupg. which gnupg yields: > gnupg not found I have also tried using the direct binary path: /usr/local/Cellar/gnupg/2.2.16_1 --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3 7D2BAF1CF37B13E2069D6956105BD0E739499BDB In which case, I get the following error: > zsh: permission denied: /usr/local/Cellar/gnupg/2.2.16_1