Encryption for Cloud storage.

Off Site backup asymetric 

only a passphrase to unlock on second key


secret_file.txt

gpg -c --no-symkey-cache --cipher-algo AES256 <file to encrypt>

enter passphrase
confirm passphrase 

file.ext.gpg is encrypted file.

gpg file.ext.gpg 
enter passphrase

file.ext

archives

tar -cf filename.tar.gz folder 

gpg -c --no-symkey-cache --cipher-algo AES256 filename.tar.gz

enter passphrase
confirm passphrase 

creates filename.tar.gz.gpg