1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
89 lines
2.6 KiB
C
89 lines
2.6 KiB
C
/*
|
|
* linux/net/sunrpc/gss_krb5_seqnum.c
|
|
*
|
|
* Adapted from MIT Kerberos 5-1.2.1 lib/gssapi/krb5/util_seqnum.c
|
|
*
|
|
* Copyright (c) 2000 The Regents of the University of Michigan.
|
|
* All rights reserved.
|
|
*
|
|
* Andy Adamson <andros@umich.edu>
|
|
*/
|
|
|
|
/*
|
|
* 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 <linux/types.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/sunrpc/gss_krb5.h>
|
|
#include <linux/crypto.h>
|
|
|
|
#ifdef RPC_DEBUG
|
|
# define RPCDBG_FACILITY RPCDBG_AUTH
|
|
#endif
|
|
|
|
s32
|
|
krb5_make_seq_num(struct crypto_tfm *key,
|
|
int direction,
|
|
s32 seqnum,
|
|
unsigned char *cksum, unsigned char *buf)
|
|
{
|
|
unsigned char plain[8];
|
|
|
|
plain[0] = (unsigned char) (seqnum & 0xff);
|
|
plain[1] = (unsigned char) ((seqnum >> 8) & 0xff);
|
|
plain[2] = (unsigned char) ((seqnum >> 16) & 0xff);
|
|
plain[3] = (unsigned char) ((seqnum >> 24) & 0xff);
|
|
|
|
plain[4] = direction;
|
|
plain[5] = direction;
|
|
plain[6] = direction;
|
|
plain[7] = direction;
|
|
|
|
return krb5_encrypt(key, cksum, plain, buf, 8);
|
|
}
|
|
|
|
s32
|
|
krb5_get_seq_num(struct crypto_tfm *key,
|
|
unsigned char *cksum,
|
|
unsigned char *buf,
|
|
int *direction, s32 * seqnum)
|
|
{
|
|
s32 code;
|
|
unsigned char plain[8];
|
|
|
|
dprintk("RPC: krb5_get_seq_num:\n");
|
|
|
|
if ((code = krb5_decrypt(key, cksum, buf, plain, 8)))
|
|
return code;
|
|
|
|
if ((plain[4] != plain[5]) || (plain[4] != plain[6])
|
|
|| (plain[4] != plain[7]))
|
|
return (s32)KG_BAD_SEQ;
|
|
|
|
*direction = plain[4];
|
|
|
|
*seqnum = ((plain[0]) |
|
|
(plain[1] << 8) | (plain[2] << 16) | (plain[3] << 24));
|
|
|
|
return (0);
|
|
}
|