GNU Privacy Guard

GNU Privacy Guard (GnuPG or GPG) is a free-software replacement for Symantec's PGP cryptographic software suite.

Install

Red Hat / CentOS

$ yum install gnupg

Ubuntu / Debian

$ apt-get install gnupg

macos

$ /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install.sh)"
$ brew install gnupg
#~OR~
$ brew install gnupg2

Usage

• Create your GPG key:

$ gpg --gen-key

• Export your public key:

$ gpg --export --armor youremail@example.com > mypubkey.asc

• Import another person's public key:

$ gpg --import theirpubkey.asc

• List the public keys in your keyring:

$ gpg --list-keys

• List private keys in your keyring:

$ gpg --list-secret-keys

• Trust a public key:

gpg --edit-key bob

trust (invoke trust subcommand on the key)
5 (ultimate trust)
y (if prompted)
quit

External links

• Official website