A simple, modern and secure file encryption tool. See also:
age-keygen
for generating key pairs. More information: https://github.com/FiloSottile/age.
age --passphrase --output path/to/encrypted_file path/to/unencrypted_file
--recipient
flag to specify multiple public keys):age --recipient public_key --output path/to/encrypted_file path/to/unencrypted_file
age --recipients-file path/to/recipients_file --output path/to/encrypted_file path/to/unencrypted_file
age --decrypt --output path/to/decrypted_file path/to/encrypted_file
age --decrypt --identity path/to/private_key_file --output path/to/decrypted_file path/to/encrypted_file