How to produce admin password in encryption format in API Request form

In the example of API Help document I see the admin password was in encryption format,
I wonder how to produce this encryption format,
could someone share a thought?

API Help - docs.sophos.com/.../API Help Doc.zip

Example:
<Request APIVersion=1500.2>
    <Login>
        <Username>admin</Username>
        <Password passwordform="encrypt">8b1e6eb1b182b1806390ffefc99753fc</Password>
    </Login>
</Request>

Regards,
Andy