Dear SCO Customer,

The enclosed Support Level Supplement (SLS) OSS425D contains a version of
ex(C)/vi(C) that will edit encrypted files.  It also contains the domestic
version of the encryption libraries: libcrypt.a and a new crypt(C) command.
Instructions for installation of the crypt(C) utility and libraries are
enclosed.

SLS OSS425D also addresses a problem found with OSS425A where vi did not
recognize crypt-related options such as -x and -C.


Software Notes and Recommendations
----------------------------------

SLS OSS425D should only be installed on:

       SCO OpenServer Enterprise System Release 5.0.5 5.0.6
       SCO OpenServer Host System Release 5.0.5 5.0.6
       SCO OpenServer Desktop System Release 5.0.5 5.0.6

It is not necessary to have the SCO OpenServer Development System currently
installed.  SLS OSS425D installs as an operating system (OS) component.

SLS OSS425D will NOT install on any SCO XENIX Operating System or SCO UNIX
Operating System products previous to the release of SCO OpenServer 5.0.5.

This SLS will NOT install on any release of SCO UnixWare 2.x or UnixWare 7.
To obtain crypt for these products, contact your SCO reseller.

The encryption library in this SLS CANNOT be used to develop DOS/XENIX
binaries under the SCO OpenServer Release 5.0 environment.


Installation Instructions
-------------------------

1. Download the OSS425D media image file (oss425d) by selecting 
   the Crypt Supplement for OpenServer 5 from the list of full products
   available from SCO's Product Download site at:

             http://www.sco.com/download/                  

   Place the file in the /tmp directory, and rename the file by typing the
   command:

             mv /tmp/oss425d /tmp/VOL.000.000

2. Run the Software Manager with the command:

             # scoadmin software

   or double-click on the Software Manager icon in the desktop.

3. Pull down the "Software" menu and select "Install New".

4. When prompted for the host from which to install, choose the local machine
   and then "Continue".

5. In the "Select Media" menu, pull down the "Media Device" menu.  Select
   "Media Images", then choose "Continue".

6. When prompted for the "Image Directory", enter "/tmp" (or the directory
   where you placed the VOL file in step 1) and choose "OK".

7. When prompted to select software to install, make sure that the "OSS425D"
   entry is highlighted, choose "Install".

8. Installation of SLS OSS425D is now complete.  To exit the Software Manager,
   select "Exit" from the "Host" menu.


Removal Instructions
--------------------

Note: Patches must be rolled back in the reverse order in which they were
installed on a per-component basis.  That is, if the "Crypt Supplement"
patch is not the most recent patch applied to the UNIX component of the
product, you will have to roll back all patches applied after the "Crypt
Supplement" patch prior to rollback of the "Crypt Supplement" patch.

To remove SLS OSS425D from take these steps:

1. Log in as root.

2. Execute the command:

      # scoadmin software

   or double-click on the Software Manager icon in the desktop.

3. Highlight "OSS425D: Crypt Supplement".

4. Pull down the "Software" menu and select "Remove Software".

5. Once the removal finishes, quit the Software Manager.  Removal of
   SLS OSS425D is now complete.


USING SLS OSS425D, THE CRYPT SUPPLEMENT
---------------------------------------

The crypt library for C programs will be installed on your system as the file:

   /usr/lib/libcrypt_d.a

Most applications invoke the crypt library by using the "-lcrypt" compiler
directive.  Link the installed product to the library name conventionally used:

   # ln -f /usr/lib/libcrypt_d.a /usr/lib/libcrypt.a

To use crypt in a C program on SCO OpenServer Release 5.0, compile your program
with the "-lcrpyt" library compiler directive:

   # cc -o foo foo.c -lcrypt

To edit an encrypted file, the -x option must be used:

   # vi -x encryptedfile

For more information, see the man page for crypt(C) that was installed during
the operating system installation.

If you have questions regarding this SLS, or the product on which it is
installed, please contact your software supplier.

!!!! IMPORTANT INFORMATION - COMPLIANCE REQUIRED !!!!

Pursuant to the U.S. Export Administration Regulations, the following
countries are subject to U.S. embargo or restrictive trade sanctions: 

Cuba
Iran
Iraq*
North Korea (Democratic Republic of Korea)
Sudan
Syria

*The comprehensive embargo on Iraq has been lifted. However, export licenses
continue to be required for certain products.

SCO prohibits export, reexport or downloading of SCO software and technology
to destinations subject to U.S. embargoes or trade sanctions.