GPG commands.txt

GPG commands

This is a summary of GPG commands that I've found useful.
Listing keys

# List public keys:
gpg --list-keys

# List private keys:
gpg --list-secret-keys

Exporting keys

USERNAME="User name"
PUBKEY=public.key
PRIKEY=private.key

# Export public keys:
gpg --export -a $USERNAME > $PUBKEY

# Export private key:
gpg --export-secret-key -a $USERNAME > $PRIKEY

Importing keys

USERNAME="User name"
PUBKEY=public.key
PRIKEY=private.key
FINGERPRINT=fingerprint.txt

# Importing public key:
gpg --import $PUBKEY

# Importing private key:
gpg --allow-secret-key-import --import $PRIKEY

# Generate the fingerprint:
gpg --fingerprint > $FINGERPRINT

Encrypting and decrypting

FILEIN=file.txt
FILEOUT=$FILEIN.gpg

# Encrypt a file (symmetric cipher using a passphrase):
gpg -c $FILEIN

# Decrypt a file:
gpg $FILEOUT

Encrypting and decrypting (using openssl)

DIRECTORYIN=directory
FILEIN=file.txt
FILEOUT=directory.tar.gz.aes
FILEIN=directory.tar.gz.aes

# Encrypt a zipped directory using ssl
tar -zcf - $DIRECTORYIN | openssl aes-256-cbc -salt -out $FILEOUT

# Decrypt a zipped directory using ssl
openssl aes-256-cbc -d -salt -in $FILEIN | tar -xz -f -

# Generate password
gpg --gen-random 2 16 | base64

Links

    http://irtfweb.ifa.hawaii.edu/~lockhart/gpg/