diff options
Diffstat (limited to 'crypto/kerberosIV/lib/krb/rd_priv.c')
| -rw-r--r-- | crypto/kerberosIV/lib/krb/rd_priv.c | 125 |
1 files changed, 0 insertions, 125 deletions
diff --git a/crypto/kerberosIV/lib/krb/rd_priv.c b/crypto/kerberosIV/lib/krb/rd_priv.c deleted file mode 100644 index 5ae161a..0000000 --- a/crypto/kerberosIV/lib/krb/rd_priv.c +++ /dev/null @@ -1,125 +0,0 @@ -/* - * Copyright (c) 1995, 1996, 1997 Kungliga Tekniska Högskolan - * (Royal Institute of Technology, Stockholm, Sweden). - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * 3. Neither the name of the Institute nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ -/* $FreeBSD$ */ - -#include "krb_locl.h" - -RCSID("$Id: rd_priv.c,v 1.27 1999/12/02 16:58:43 joda Exp $"); - -/* application include files */ -#include "krb-archaeology.h" - -/* - * krb_rd_priv() decrypts and checks the integrity of an - * AUTH_MSG_PRIVATE message. Given the message received, "in", - * the length of that message, "in_length", the key "schedule" - * and "key", and the network addresses of the - * "sender" and "receiver" of the message, krb_rd_safe() returns - * RD_AP_OK if the message is okay, otherwise some error code. - * - * The message data retrieved from "in" are returned in the structure - * "m_data". The pointer to the application data - * (m_data->app_data) refers back to the appropriate place in "in". - * - * See the file "mk_priv.c" for the format of the AUTH_MSG_PRIVATE - * message. The structure containing the extracted message - * information, MSG_DAT, is defined in "krb.h". - */ - -int32_t -krb_rd_priv(void *in, u_int32_t in_length, - des_key_schedule schedule, des_cblock *key, - struct sockaddr_in *sender, struct sockaddr_in *receiver, - MSG_DAT *m_data) -{ - unsigned char *p = (unsigned char*)in; - int little_endian; - u_int32_t clen; - struct timeval tv; - u_int32_t src_addr; - int delta_t; - - unsigned char pvno, type; - - pvno = *p++; - if(pvno != KRB_PROT_VERSION) - return RD_AP_VERSION; - - type = *p++; - little_endian = type & 1; - type &= ~1; - - p += krb_get_int(p, &clen, 4, little_endian); - - if(clen + 2 > in_length) - return RD_AP_MODIFIED; - - des_pcbc_encrypt((des_cblock*)p, (des_cblock*)p, clen, - schedule, key, DES_DECRYPT); - - p += krb_get_int(p, &m_data->app_length, 4, little_endian); - if(m_data->app_length + 17 > in_length) - return RD_AP_MODIFIED; - - m_data->app_data = p; - p += m_data->app_length; - - m_data->time_5ms = *p++; - - p += krb_get_address(p, &src_addr); - - if (!krb_equiv(src_addr, sender->sin_addr.s_addr)) - return RD_AP_BADD; - - p += krb_get_int(p, (u_int32_t *)&m_data->time_sec, 4, little_endian); - - m_data->time_sec = lsb_time(m_data->time_sec, sender, receiver); - - gettimeofday(&tv, NULL); - - /* check the time integrity of the msg */ - delta_t = abs((int)((long) tv.tv_sec - m_data->time_sec)); - if (delta_t > CLOCK_SKEW) - return RD_AP_TIME; - if (krb_debug) - krb_warning("delta_t = %d\n", (int) delta_t); - - /* - * caller must check timestamps for proper order and - * replays, since server might have multiple clients - * each with its own timestamps and we don't assume - * tightly synchronized clocks. - */ - - return KSUCCESS; -} |
