wu-ftps potential to support encryption

I am running wu-ftpd 2.6.1 and the source has no tlutil.c, also we have
installed no encryption related patches.  So I am assuming this version
does not support encryption.

However, I see some things in the source which look to my untrained eye
very much like they may have something to do with some sort of encryption.

There are some structure members with names such as fg_encrypt, fd_encrypt
etc (possibly indirectly connected with password names), and there are
sections of code which may be compiled if we define things like HPUX,
SecureWare, NetBSD etc, all of which look suspiciously like something to do
with encryption/security.

I have a disclosure responsibility and I'm just trying to be as sure as is
reasonable that encryption is not potentially supported.

Does any one know what this source code might be about, to put my mind at
rest.

Many thanks,

Andrew H.