diff options
Diffstat (limited to 'crypto/kerberosIV/lib/krb/mk_safe.c')
| -rw-r--r-- | crypto/kerberosIV/lib/krb/mk_safe.c | 135 |
1 files changed, 0 insertions, 135 deletions
diff --git a/crypto/kerberosIV/lib/krb/mk_safe.c b/crypto/kerberosIV/lib/krb/mk_safe.c deleted file mode 100644 index c0bbc9a..0000000 --- a/crypto/kerberosIV/lib/krb/mk_safe.c +++ /dev/null @@ -1,135 +0,0 @@ -/* - * Copyright (c) 1995 - 2000 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. - */ - -#include "krb_locl.h" - -RCSID("$Id: mk_safe.c,v 1.25.2.1 2000/10/10 13:19:25 assar Exp $"); - -/* application include files */ -#include "krb-archaeology.h" - -#ifndef DES_QUAD_GUESS -/* Temporary fixes for krb_{rd,mk}_safe */ -#define DES_QUAD_GUESS 0 -#define DES_QUAD_NEW 1 -#define DES_QUAD_OLD 2 - -#define DES_QUAD_DEFAULT DES_QUAD_GUESS - -#endif /* DES_QUAD_GUESS */ - -/* from rd_safe.c */ -extern int dqc_type; -void fixup_quad_cksum(void*, size_t, des_cblock*, void*, void*, int); - -/* - * krb_mk_safe() constructs an AUTH_MSG_SAFE message. It takes some - * user data "in" of "length" bytes and creates a packet in "out" - * consisting of the user data, a timestamp, and the sender's network - * address, followed by a checksum computed on the above, using the - * given "key". The length of the resulting packet is returned. - * - * The "out" packet consists of: - * - * Size Variable Field - * ---- -------- ----- - * - * 1 byte KRB_PROT_VERSION protocol version number - * 1 byte AUTH_MSG_SAFE | message type plus local - * HOST_BYTE_ORDER byte order in low bit - * - * ===================== begin checksum ================================ - * - * 4 bytes length length of user data - * length in user data - * 1 byte msg_time_5ms timestamp milliseconds - * 4 bytes sender->sin.addr.s_addr sender's IP address - * - * 4 bytes msg_time_sec or timestamp seconds with - * -msg_time_sec direction in sign bit - * - * ======================= end checksum ================================ - * - * 16 bytes big_cksum quadratic checksum of - * above using "key" - */ - -int32_t -krb_mk_safe(void *in, void *out, u_int32_t length, des_cblock *key, - struct sockaddr_in *sender, struct sockaddr_in *receiver) -{ - unsigned char * p = (unsigned char*)out; - struct timeval tv; - unsigned char *start; - u_int32_t src_addr; - - p += krb_put_int(KRB_PROT_VERSION, p, 1, 1); - p += krb_put_int(AUTH_MSG_SAFE, p, 1, 1); - - start = p; - - p += krb_put_int(length, p, 4, 4); - - memcpy(p, in, length); - p += length; - - krb_kdctimeofday(&tv); - - *p++ = tv.tv_usec/5000; /* 5ms */ - - src_addr = sender->sin_addr.s_addr; - p += krb_put_address(src_addr, p, 4); - - p += krb_put_int(lsb_time(tv.tv_sec, sender, receiver), p, 4, 4); - - { - /* We are faking big endian mode, so we need to fix the - * checksum (that is byte order dependent). We always send a - * checksum of the new type, unless we know that we are - * talking to an old client (this requires a call to - * krb_rd_safe first). - */ - unsigned char new_checksum[16]; - unsigned char old_checksum[16]; - fixup_quad_cksum(start, p - start, key, new_checksum, old_checksum, 0); - - if((dqc_type == DES_QUAD_GUESS && DES_QUAD_DEFAULT == DES_QUAD_OLD) || - dqc_type == DES_QUAD_OLD) - memcpy(p, old_checksum, 16); - else - memcpy(p, new_checksum, 16); - } - p += 16; - - return p - (unsigned char*)out; -} |
