As submitted by Openvision Technologies:

To: tytso@MIT.EDU
Subject: gssapi
Date: Fri, 17 Dec 1993 17:55:06 -0500
From: Marc Horowitz <marc@security.ov.com>

This is named in my RCS tree as MIT931217.  The copyright notice
included is (hopefully) final.  Good luck!

		Marc

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@3205 dc483132-0cff-0310-8789-dd5450dbe970

1 files changed, 56 insertions, 0 deletions

diff --git a/src/lib/gssapi/krb5/util_seed.c b/src/lib/gssapi/krb5/util_seed.c
new file mode 100644
index 000000000..9eb57c1cc
--- /dev/null
+++ b/src/lib/gssapi/krb5/util_seed.c
@@ -0,0 +1,56 @@
+/*
+ * Copyright 1993 by OpenVision Technologies, Inc.
+ * 
+ * Permission to use, copy, modify, distribute, and sell this software
+ * and its documentation for any purpose is hereby granted without fee,
+ * provided that the above copyright notice appears in all copies and
+ * that both that copyright notice and this permission notice appear in
+ * supporting documentation, and that the name of OpenVision not be used
+ * in advertising or publicity pertaining to distribution of the software
+ * without specific, written prior permission. OpenVision makes no
+ * representations about the suitability of this software for any
+ * purpose.  It is provided "as is" without express or implied warranty.
+ * 
+ * OPENVISION DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL OPENVISION BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
+ * USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+ * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "gssapiP_krb5.h"
+#include <memory.h>
+
+/*
+ * $Id$
+ */
+
+static unsigned char zeros[16] = {0,0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0};
+
+krb5_error_code
+kg_make_seed(krb5_keyblock *key, unsigned char *seed)
+{
+   krb5_error_code code;
+   krb5_gss_enc_desc ed;
+   int i;
+
+   if (code = krb5_copy_keyblock(key, &ed.key))
+      return(code);
+
+   /* reverse the key bytes, as per spec */
+
+   for (i=0; i<ed.key->length; i++)
+      ed.key->contents[i] = key->contents[key->length - 1 - i];
+
+   krb5_use_cstype(&ed.eblock, ETYPE_RAW_DES_CBC);
+   ed.processed = 0;
+
+   code = kg_encrypt(&ed, NULL, zeros, seed, 16);
+
+   krb5_finish_key(&ed.eblock);
+   krb5_free_keyblock(ed.key);
+
+   return(code);
+}