Red Hat System Administration III - Unit 4 - Encrypting Files with GnuPG

Overview

• Public-key encryption (aka asymmentric encryption)
• Anything encrypted by public key, can only decrypted by private key
• GNU Privacy Guard:
• GnuPG or GPG is an open-source implementation of OpenPGP

GPG Commands

1. Generate a key pair:

gpg --gen-key

1. List public keys

gpg --list-keys

1. Export a public key

gpg --export --armor -o file.key key-id

1. Import a public key

gpg --import key

1. Encrypt a file

gpg --encrypt --armor -r <key-id> <file>

1. Decrypt a file

gpg --decrpyt <file>

• Can encrypt with public key and send via to person with private key to decrypt
• Can encrypt with private key and send to people with public key to decrypt