Jim Wise <jwise@draga.com> wrote:

> >Add __md5crypt(), for internal use by libcrypt. This behaves for the most
> >part like crypt() but uses a proprietry encryption scheme that utilises MD5.
>                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> >From FreeBSD via OpenBSD.
> 
> Where is there more information/documentation about the scheme which
> this uses?

UTSL, I guess. Aside from that, I will be updating the manpage
for crypt() shortly (to describe the new `modular encryption 
format', i.e. _PASSWORD_NONDES), although that won't directly 
address how the MD5 stuff works.