Specifies the key size for the AES algorithm encryption of the password-protected archive. The option is used together with the –password option. For example:
The randomly generated encryption key is then encrypted with AES-256 using a SHA-256 hash of the password as a key. The password itself is not stored anywhere on the disk or in the backup file; the password hash is used for verification purposes. With this two-level security, the backup data is protected from any unauthorized access, but recovering a lost password is not possible.
If the /crypt option is not specified, the password-protected archive will be not encrypted.