test encryption wrapping

git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@15596 ec53bebd-3082-4978-b11e-865c3cabbd6b

lib/krb5/test_crypto_wrapping.c

@@ -0,0 +1,165 @@
+/*
+ * Copyright (c) 2005 Kungliga Tekniska H<>gskolan
+ * (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 KTH 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 KTH AND ITS 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 KTH OR ITS 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 "krb5_locl.h"
+#include <err.h>
+#include <getarg.h>
+
+RCSID("$Id$");
+
+static void
+test_wrapping(krb5_context context,
+	      size_t min_size,
+	      size_t max_size,
+	      size_t step,
+	      krb5_enctype etype)
+{
+    krb5_error_code ret;
+    krb5_keyblock key;
+    krb5_crypto crypto;
+    krb5_data data;
+    char *etype_name;
+    void *buf;
+    size_t size;
+
+    ret = krb5_generate_random_keyblock(context, etype, &key);
+    if (ret)
+	krb5_err(context, 1, ret, "krb5_generate_random_keyblock");
+
+    ret = krb5_enctype_to_string(context, etype, &etype_name);
+    if (ret)
+	krb5_err(context, 1, ret, "krb5_enctype_to_string");
+
+    buf = malloc(max_size);
+    if (buf == NULL)
+	krb5_errx(context, 1, "out of memory");
+    memset(buf, 0, max_size);
+
+    ret = krb5_crypto_init(context, &key, 0, &crypto);
+    if (ret)
+	krb5_err(context, 1, ret, "krb5_crypto_init");
+
+    for (size = min_size; size < max_size; size += step) {
+	size_t wrapped_size;
+
+	ret = krb5_encrypt(context, crypto, 0, buf, size, &data);
+	if (ret)
+	    krb5_err(context, 1, ret, "encrypt size %d using %s",
+		     size, etype_name);
+
+	wrapped_size = krb5_get_wrapped_length(context, crypto, size);
+
+	if (wrapped_size != data.length)
+	    krb5_errx(context, 1, "calculated wrapped length %lu != "
+		      "real wrapped length %lu for data length %lu using "
+		      "enctype %s",
+		      (unsigned long)wrapped_size,
+		      (unsigned long)data.length,
+		      (unsigned long)size,
+		      etype_name);
+	krb5_data_free(&data);
+    }
+
+    free(buf);
+    krb5_crypto_destroy(context, crypto);
+    krb5_free_keyblock_contents(context, &key);
+}
+
+
+
+static int version_flag = 0;
+static int help_flag	= 0;
+
+static struct getargs args[] = {
+    {"version",	0,	arg_flag,	&version_flag,
+     "print version", NULL },
+    {"help",	0,	arg_flag,	&help_flag,
+     NULL, NULL }
+};
+
+static void
+usage (int ret)
+{
+    arg_printusage (args,
+		    sizeof(args)/sizeof(*args),
+		    NULL,
+		    "");
+    exit (ret);
+}
+
+int
+main(int argc, char **argv)
+{
+    krb5_context context;
+    krb5_error_code ret;
+    int i, optidx = 0;
+
+    krb5_enctype enctypes[] = { 
+	ETYPE_DES_CBC_CRC,
+	ETYPE_DES_CBC_MD4,
+	ETYPE_DES_CBC_MD5,
+	ETYPE_DES3_CBC_SHA1,
+	ETYPE_ARCFOUR_HMAC_MD5,
+	ETYPE_ARCFOUR_HMAC_MD5_56,
+	ETYPE_AES128_CTS_HMAC_SHA1_96,
+	ETYPE_AES256_CTS_HMAC_SHA1_96
+    };
+
+    setprogname(argv[0]);
+
+    if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optidx))
+	usage(1);
+    
+    if (help_flag)
+	usage (0);
+
+    if(version_flag){
+	print_version(NULL);
+	exit(0);
+    }
+
+    argc -= optidx;
+    argv += optidx;
+
+
+    ret = krb5_init_context(&context);
+    if (ret)
+	errx (1, "krb5_init_context failed: %d", ret);
+
+    for (i = 0; i < sizeof(enctypes)/sizeof(enctypes[0]); i++) {
+	test_wrapping(context, 0, 1024, 1, enctypes[i]);
+	test_wrapping(context, 1024, 1024 * 100, 1024, enctypes[i]);
+    }
+    krb5_free_context(context);
+
+    return 0;
+}