Import KTH Heimdal, which will be the core of our Kerberos5.vendor/heimdal/0.2m

Userland to follow.

1 files changed, 115 insertions, 0 deletions

diff --git a/crypto/heimdal/lib/gssapi/get_mic.c b/crypto/heimdal/lib/gssapi/get_mic.c
new file mode 100644
index 000000000000..2b779c798e49
--- /dev/null
+++ b/crypto/heimdal/lib/gssapi/get_mic.c
@@ -0,0 +1,115 @@
+/*
+ * Copyright (c) 1997, 1998 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: get_mic.c,v 1.9 1999/12/02 17:05:03 joda Exp $");
+
+OM_uint32 gss_get_mic
+           (OM_uint32 * minor_status,
+            const gss_ctx_id_t context_handle,
+            gss_qop_t qop_req,
+            const gss_buffer_t message_buffer,
+            gss_buffer_t message_token
+           )
+{
+  u_char *p;
+  struct md5 md5;
+  u_char hash[16];
+  des_key_schedule schedule;
+  des_cblock key;
+  des_cblock zero;
+  int32_t seq_number;
+  size_t len, total_len;
+
+  gssapi_krb5_encap_length (22, &len, &total_len);
+
+  message_token->length = total_len;
+  message_token->value  = malloc (total_len);
+  if (message_token->value == NULL)
+    return GSS_S_FAILURE;
+
+  p = gssapi_krb5_make_header(message_token->value,
+			      len,
+			      "\x01\x01");
+
+  memcpy (p, "\x00\x00", 2);
+  p += 2;
+  memcpy (p, "\xff\xff\xff\xff", 4);
+  p += 4;
+
+  /* Fill in later */
+  memset (p, 0, 16);
+  p += 16;
+
+  /* checksum */
+  md5_init (&md5);
+  md5_update (&md5, p - 24, 8);
+  md5_update (&md5, message_buffer->value,
+	      message_buffer->length);
+  md5_finito (&md5, hash);
+
+  memset (&zero, 0, sizeof(zero));
+  gss_krb5_getsomekey(context_handle, &key);
+  des_set_key (&key, schedule);
+  des_cbc_cksum ((des_cblock *)hash,
+		 (des_cblock *)hash, sizeof(hash), schedule, &zero);
+  memcpy (p - 8, hash, 8);
+
+  /* sequence number */
+  krb5_auth_getlocalseqnumber (gssapi_krb5_context,
+			       context_handle->auth_context,
+			       &seq_number);
+
+  p -= 16;
+  p[0] = (seq_number >> 0)  & 0xFF;
+  p[1] = (seq_number >> 8)  & 0xFF;
+  p[2] = (seq_number >> 16) & 0xFF;
+  p[3] = (seq_number >> 24) & 0xFF;
+  memset (p + 4,
+	  (context_handle->more_flags & LOCAL) ? 0 : 0xFF,
+	  4);
+
+  des_set_key (&key, schedule);
+  des_cbc_encrypt ((des_cblock *)p, (des_cblock *)p, 8,
+		   schedule, (des_cblock *)(p + 8), DES_ENCRYPT);
+
+  krb5_auth_setlocalseqnumber (gssapi_krb5_context,
+			       context_handle->auth_context,
+			       ++seq_number);
+  
+  memset (key, 0, sizeof(key));
+  memset (schedule, 0, sizeof(schedule));
+  
+  return GSS_S_COMPLETE;
+}