GPG

GNU Privacy Guard (GnuPG or GPG),replacement of PGP(Pretty Good Privacy) a free-software tool used to bring out encryption, it features a versatile key management system.

Installation

$ sudo apt install gnupg

Usage

To create Public and Private Keys

$ gpg --gen-key

List Keys

$ gpg --fingerprint ibaydan

Register To Key server

$ gpg --keyserver gpg.mit.edu --send-keys 003D114F

Export Public Key in ASCII formats

$ gpg --armor --output pubkey.txt --export 'ibaydan'

Encrypt A file

$ gpg --encrypt --recipient 'ibayadan' --output ServerPass.txt.enc ServerPass.txt

Decrypt A file

$ gpg --output foo.txt --decrypt ServerPass.txt.enc

List Installed Keys

$ gpg --list-keys

Delete Key

$ gpg --delete-key ibayadan

Delete Key with Secret Keys

$ gpg --delete-secret-keys 'ibaydan@poftut.com'

References

For more information about the tool,

$ man gpg