o;<samp>passphrase=<var>string</var></samp>&rsquo;</dt>
<dd><p>HaiCrypt Encryption/Decryption Passphrase string, length
from 10 to 79 characters. The passphrase is the shared
secret between the sender and the receiver. It is used
to generate the Key Encrypting Key using PBKDF2
(Password-Based Key Derivation Function). It is used
only if &lsquo;<samp>pbkeylen</samp>&rsquo; is non-zero. It is used on
the receiver only if the received data is encrypted.
The configured passphrase cannot be recovered (write-only