GPG public/private keys for file encryption

gpg_key_encrypt_files

# First generate a public/private key pair

gpg --full-generate-key

# Export your public and private keys

gpg --export --armor --output <name>.gpg.pub

gpg --export-secret-keys <your_email> > <name>.gpg.key

# Import a private key on another machine

gpg --import <name>.gpg.key

# Encrypt a file name with you (your email) as recipient

gpg -r <your_email> --encrypt <file_name>.tgz

# Decrypt a file name using the password-protected key (stored in database)

gpg --decrypt <file_name>.tgz.gpg > <file_name>.tgz