k5seal.c revision 159d09a20817016f09b3ea28d1bdada4a336bb91
/*
* Copyright 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
* 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.
*/
/*
* Copyright (C) 1998 by the FundsXpress, INC.
*
* All rights reserved.
*
* Export of this software from the United States of America may require
* a specific license from the United States Government. It is the
* responsibility of any person or organization contemplating export to
* obtain such a license before exporting.
*
* WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
* distribute this software and its documentation for any purpose and
* without fee is hereby granted, provided that the above copyright
* notice appear in all copies and that both that copyright notice and
* this permission notice appear in supporting documentation, and that
* the name of FundsXpress. not be used in advertising or publicity pertaining
* to distribution of the software without specific, written prior
* permission. FundsXpress makes no representations about the suitability of
* this software for any purpose. It is provided "as is" without express
* or implied warranty.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
#include "gssapiP_krb5.h"
#include <k5-int.h>
static krb5_error_code
int direction,
int signalg,
int sealalg,
int encrypt,
int toktype,
int bigend,
{
char *data_ptr;
/* msglen contains the message length
* we are signing/encrypting. tmsglen
* contains the length of the message
* we plan to write out to the token.
* tlen is the length of the token
* including header. */
unsigned char *t, *ptr;
unsigned char *plain;
unsigned char pad;
/* Solaris Kerberos: check for recognized signalg and sealalg */
#ifdef _KERNEL
/*
* Because the ARCFOUR code bypasses the standard
* crypto interfaces, we must make sure the kernel
* crypto framework mechanism types are properly
* initialized here.
*/
return (code);
}
return (code);
}
#endif /* _KERNEL */
/* create the token buffer */
/* Do we need confounder? */
else conflen = 0;
if (toktype == KG_TOK_SEAL_MSG) {
switch (sealalg) {
case SEAL_ALG_MICROSOFT_RC4:
pad = 1;
break;
default:
/* XXX knows that des block size is 8 */
}
} else {
tmsglen = 0;
pad = 0;
}
return(ENOMEM);
/*** fill in the token */
ptr = t;
/* 0..1 SIGN_ALG */
/* 2..3 SEAL_ALG or Filler */
} else {
/* No seal */
}
/* 4..5 Filler */
/* pad the plaintext, encrypt if needed, and stick it in the token */
/* initialize the the cksum */
switch (signalg) {
case SGN_ALG_DES_MAC_MD5:
case SGN_ALG_MD2_5:
break;
break;
case SGN_ALG_HMAC_MD5:
if (toktype != KG_TOK_SEAL_MSG)
sign_usage = 15;
break;
default:
signalg);
#ifndef _KERNEL
abort ();
#else
return (GSS_S_DEFECTIVE_TOKEN);
#endif /* _KERNEL */
}
if (code) {
"error code=%d\n", code);
return(code);
}
xfree_wrap(t, tlen);
return(ENOMEM);
}
if (conflen) {
xfree_wrap(t, tlen);
"kg_make_confounder() error code=%d\n", code);
return(code);
}
}
/* compute the checksum */
/* 8 = head of token body as specified by mech spec */
xfree_wrap(t, tlen);
return(ENOMEM);
}
if (bigend)
else
if (code) {
"krb5_c_make_checksum() error code=%d\n", code);
xfree_wrap(t, tlen);
return(code);
}
switch(signalg) {
case SGN_ALG_DES_MAC_MD5:
case 3:
xfree_wrap(t, tlen);
"error code=%d\n", code);
return code;
}
break;
/*
* Using key derivation, the call to krb5_c_make_checksum
* already dealt with encrypting.
*/
{
"md5cksum.length %u != "
"cksum_size %u\n",
(unsigned int) cksum_size);
#ifndef _KERNEL
abort ();
#else
return (GSS_S_DEFECTIVE_TOKEN);
#endif
}
break;
case SGN_ALG_HMAC_MD5:
(unsigned int)cksum_size);
break;
}
/* create the seq_num */
xfree_wrap(t, tlen);
"error code=%d\n", code);
return(code);
}
if (encrypt) {
switch(sealalg) {
case SEAL_ALG_MICROSOFT_RC4:
{
unsigned char bigend_seqnum[4];
int i;
if (code)
{
xfree_wrap(t, tlen);
return(code);
}
for (i = 0; i <= 15; i++)
bigend_seqnum, 4,
if (code)
{
xfree_wrap(t, tlen);
return(code);
}
}
break;
default:
tmsglen))) {
xfree_wrap(t, tlen);
return(code);
}
}
}else {
if (tmsglen)
}
/* that's it. return the token */
(*seqnum)++;
return(0);
}
/* if signonly is true, ignore conf_req, conf_state,
and do not encode the ENC_TYPE, MSG_LENGTH, or MSG_TEXT fields */
int conf_req_flag;
int qop_req;
int *conf_state;
int toktype;
{
output_message_buffer->length = 0;
/* Only default qop or matching established cryptosystem is allowed.
There are NO EXTENSIONS to this set for AES and friends! The
new spec says "just use 0". The old spec plus extensions would
actually allow for certain non-zero values. Fix this to handle
them later. */
if (qop_req != 0) {
return (GSS_S_BAD_QOP);
}
/* validate the context handle */
if (! kg_validate_ctx_id(context_handle)) {
"error GSS_S_NO_CONTEXT\n");
return (GSS_S_NO_CONTEXT);
}
return(GSS_S_NO_CONTEXT);
}
*minor_status = code;
return (GSS_S_FAILURE);
}
{
case 0:
break;
case 1:
break;
default:
break;
}
if (code) {
*minor_status = code;
"error code=%d\n", code);
return (GSS_S_FAILURE);
}
if (conf_state)
*minor_status = 0;
return (GSS_S_CONTEXT_EXPIRED);
}
return (GSS_S_COMPLETE);
}