The encryption key is derived from the passphrase by applying a one-way hash function to it. Normally, there is no reason to change this from the recommended default and doing so in the wrong way can reduce the encryption strength.
Tasarut n uwgelhen tettusuddem-d seg tefyirt tuffirt s usnes n tesɣent n udway mm yiwet n tnila. Deg tuget, ulac ɣef wacu ara yettusenfel waya seg wazal aezwer i d-yettuwellhen yerna ma yella tella tuccḍa deg tigin-ines yezmer ad isenqes deg lǧehd n uwgelhen.