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