DES enctypes have unkeyed mandatory-to-implement checksums.  Since
FAST requires a keyed checksum, we must pick something else in that
case.


https://github.com/krb5/krb5/commit/da9d96e6f471b38cd31931132629be9a44db056b
Commit By: ghudson
Revision: 23629
Changed Files:
U   trunk/src/lib/krb5/krb/fast.c