diff options
Diffstat (limited to 'crypto/heimdal/lib/gssapi/verify_mic.c')
| -rw-r--r-- | crypto/heimdal/lib/gssapi/verify_mic.c | 124 |
1 files changed, 0 insertions, 124 deletions
diff --git a/crypto/heimdal/lib/gssapi/verify_mic.c b/crypto/heimdal/lib/gssapi/verify_mic.c deleted file mode 100644 index 1cc4c520cb13c..0000000000000 --- a/crypto/heimdal/lib/gssapi/verify_mic.c +++ /dev/null @@ -1,124 +0,0 @@ -/* - * Copyright (c) 1997 - 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 "gssapi_locl.h" - -RCSID("$Id: verify_mic.c,v 1.9 2000/01/25 23:14:47 assar Exp $"); - -OM_uint32 gss_verify_mic - (OM_uint32 * minor_status, - const gss_ctx_id_t context_handle, - const gss_buffer_t message_buffer, - const gss_buffer_t token_buffer, - gss_qop_t * qop_state - ) -{ - u_char *p; - MD5_CTX md5; - u_char hash[16], seq_data[8]; - des_key_schedule schedule; - des_cblock key; - des_cblock zero; - int32_t seq_number; - OM_uint32 ret; - - p = token_buffer->value; - ret = gssapi_krb5_verify_header (&p, - token_buffer->length, - "\x01\x01"); - if (ret) - return ret; - - if (memcmp(p, "\x00\x00", 2) != 0) - return GSS_S_BAD_SIG; - p += 2; - if (memcmp (p, "\xff\xff\xff\xff", 4) != 0) - return GSS_S_BAD_MIC; - p += 4; - p += 16; - - /* verify checksum */ - MD5Init (&md5); - MD5Update (&md5, p - 24, 8); - MD5Update (&md5, message_buffer->value, - message_buffer->length); - MD5Final (hash, &md5); - - memset (&zero, 0, sizeof(zero)); -#if 0 - memcpy (&key, context_handle->auth_context->key.keyvalue.data, - sizeof(key)); -#endif - memcpy (&key, context_handle->auth_context->remote_subkey->keyvalue.data, - sizeof(key)); - - des_set_key (&key, schedule); - des_cbc_cksum ((const void *)hash, (void *)hash, sizeof(hash), - schedule, &zero); - if (memcmp (p - 8, hash, 8) != 0) { - memset (key, 0, sizeof(key)); - memset (schedule, 0, sizeof(schedule)); - return GSS_S_BAD_MIC; - } - - /* verify sequence number */ - - krb5_auth_getremoteseqnumber (gssapi_krb5_context, - context_handle->auth_context, - &seq_number); - seq_data[0] = (seq_number >> 0) & 0xFF; - seq_data[1] = (seq_number >> 8) & 0xFF; - seq_data[2] = (seq_number >> 16) & 0xFF; - seq_data[3] = (seq_number >> 24) & 0xFF; - memset (seq_data + 4, - (context_handle->more_flags & LOCAL) ? 0xFF : 0, - 4); - - p -= 16; - des_set_key (&key, schedule); - des_cbc_encrypt ((const void *)p, (void *)p, 8, - schedule, (des_cblock *)hash, DES_DECRYPT); - - memset (key, 0, sizeof(key)); - memset (schedule, 0, sizeof(schedule)); - - if (memcmp (p, seq_data, 8) != 0) { - return GSS_S_BAD_MIC; - } - - krb5_auth_setremoteseqnumber (gssapi_krb5_context, - context_handle->auth_context, - ++seq_number); - - return GSS_S_COMPLETE; -} |