1 /*
2 * Copyright (c) 2005 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * 3. Neither the name of KTH nor the names of its contributors may be
18 * used to endorse or promote products derived from this software without
19 * specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY KTH AND ITS CONTRIBUTORS ``AS IS'' AND ANY
22 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL KTH OR ITS CONTRIBUTORS BE
25 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
28 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
29 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
30 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
31 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
32
33 #include "krb5_locl.h"
34 #include <err.h>
35 #include <getarg.h>
36
37 static void
test_wrapping(krb5_context context,size_t min_size,size_t max_size,size_t step,krb5_enctype etype)38 test_wrapping(krb5_context context,
39 size_t min_size,
40 size_t max_size,
41 size_t step,
42 krb5_enctype etype)
43 {
44 krb5_error_code ret;
45 krb5_keyblock key;
46 krb5_crypto crypto;
47 krb5_data data;
48 char *etype_name;
49 void *buf;
50 size_t size;
51
52 ret = krb5_generate_random_keyblock(context, etype, &key);
53 if (ret)
54 krb5_err(context, 1, ret, "krb5_generate_random_keyblock");
55
56 ret = krb5_enctype_to_string(context, etype, &etype_name);
57 if (ret)
58 krb5_err(context, 1, ret, "krb5_enctype_to_string");
59
60 buf = malloc(max_size);
61 if (buf == NULL)
62 krb5_errx(context, 1, "out of memory");
63 memset(buf, 0, max_size);
64
65 ret = krb5_crypto_init(context, &key, 0, &crypto);
66 if (ret)
67 krb5_err(context, 1, ret, "krb5_crypto_init");
68
69 for (size = min_size; size < max_size; size += step) {
70 size_t wrapped_size;
71
72 ret = krb5_encrypt(context, crypto, 0, buf, size, &data);
73 if (ret)
74 krb5_err(context, 1, ret, "encrypt size %lu using %s",
75 (unsigned long)size, etype_name);
76
77 wrapped_size = krb5_get_wrapped_length(context, crypto, size);
78
79 if (wrapped_size != data.length)
80 krb5_errx(context, 1, "calculated wrapped length %lu != "
81 "real wrapped length %lu for data length %lu using "
82 "enctype %s",
83 (unsigned long)wrapped_size,
84 (unsigned long)data.length,
85 (unsigned long)size,
86 etype_name);
87 krb5_data_free(&data);
88 }
89
90 free(etype_name);
91 free(buf);
92 krb5_crypto_destroy(context, crypto);
93 krb5_free_keyblock_contents(context, &key);
94 }
95
96
97
98 static int version_flag = 0;
99 static int help_flag = 0;
100
101 static struct getargs args[] = {
102 {"version", 0, arg_flag, &version_flag,
103 "print version", NULL },
104 {"help", 0, arg_flag, &help_flag,
105 NULL, NULL }
106 };
107
108 static void
usage(int ret)109 usage (int ret)
110 {
111 arg_printusage (args,
112 sizeof(args)/sizeof(*args),
113 NULL,
114 "");
115 exit (ret);
116 }
117
118 int
main(int argc,char ** argv)119 main(int argc, char **argv)
120 {
121 krb5_context context;
122 krb5_error_code ret;
123 int i, optidx = 0;
124
125 krb5_enctype enctypes[] = {
126 #ifdef HEIM_WEAK_CRYPTO
127 ETYPE_DES_CBC_CRC,
128 ETYPE_DES_CBC_MD4,
129 ETYPE_DES_CBC_MD5,
130 #endif
131 ETYPE_DES3_CBC_SHA1,
132 ETYPE_ARCFOUR_HMAC_MD5,
133 ETYPE_AES128_CTS_HMAC_SHA1_96,
134 ETYPE_AES256_CTS_HMAC_SHA1_96
135 };
136
137 setprogname(argv[0]);
138
139 if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optidx))
140 usage(1);
141
142 if (help_flag)
143 usage (0);
144
145 if(version_flag){
146 print_version(NULL);
147 exit(0);
148 }
149
150 argc -= optidx;
151 argv += optidx;
152
153 ret = krb5_init_context(&context);
154 if (ret)
155 errx (1, "krb5_init_context failed: %d", ret);
156
157 for (i = 0; i < sizeof(enctypes)/sizeof(enctypes[0]); i++) {
158 krb5_enctype_enable(context, enctypes[i]);
159
160 test_wrapping(context, 0, 1024, 1, enctypes[i]);
161 test_wrapping(context, 1024, 1024 * 100, 1024, enctypes[i]);
162 }
163 krb5_free_context(context);
164
165 return 0;
166 }
167