1 #pragma ident "%Z%%M% %I% %E% SMI" 2 /* 3 * Copyright 1993 by OpenVision Technologies, Inc. 4 * 5 * Permission to use, copy, modify, distribute, and sell this software 6 * and its documentation for any purpose is hereby granted without fee, 7 * provided that the above copyright notice appears in all copies and 8 * that both that copyright notice and this permission notice appear in 9 * supporting documentation, and that the name of OpenVision not be used 10 * in advertising or publicity pertaining to distribution of the software 11 * without specific, written prior permission. OpenVision makes no 12 * representations about the suitability of this software for any 13 * purpose. It is provided "as is" without express or implied warranty. 14 * 15 * OPENVISION DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, 16 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO 17 * EVENT SHALL OPENVISION BE LIABLE FOR ANY SPECIAL, INDIRECT OR 18 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF 19 * USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR 20 * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR 21 * PERFORMANCE OF THIS SOFTWARE. 22 */ 23 24 #include <gssapiP_krb5.h> 25 26 /* 27 * $Id: util_seed.c,v 1.13.6.1 2000/05/31 17:17:39 raeburn Exp $ 28 */ 29 30 static unsigned char zeros[16] = {0,0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0}; 31 32 krb5_error_code 33 kg_make_seed(context, key, seed) 34 krb5_context context; 35 krb5_keyblock *key; 36 unsigned char *seed; 37 { 38 krb5_error_code code; 39 krb5_keyblock *tmpkey; 40 int i; 41 42 if (code = krb5_copy_keyblock(context, key, &tmpkey)) 43 return(code); 44 45 /* reverse the key bytes, as per spec */ 46 47 for (i=0; i<tmpkey->length; i++) 48 tmpkey->contents[i] = key->contents[key->length - 1 - i]; 49 50 code = kg_encrypt(context, tmpkey, KG_USAGE_SEAL, NULL, zeros, seed, 16); 51 52 krb5_free_keyblock(context, tmpkey); 53 54 return(code); 55 } 56