Using GNU Privacy Guard (GPG)

GPG exist in both Windows and Linux system. It is a tool to perform public key encryption for files or messages. GPG may download from http://www.gnupg.org/

Some useful commands

1. Creating keys: gpg --gen-key
2. Exporting public keys: gpg --export -a [UID]
3. Exporting private keys: gpg --export-secret-key -a [UID]
4. Importing keys: gpg --import [FileName]
5. List keys: gpg --list-keys
6. Delete public keys: gpg --delete-keys UID
7. Delete private keys: gpg --delete-secret-keys UID
8. Encrypt a file: gpg -e -r [UID] <filename>
9. Decrypt a file: gpg -d -o <output-file> <myfile.gpg>