1 /* $OpenBSD: igetest.c,v 1.4 2018/07/17 17:06:49 tb Exp $ */
2 /* ====================================================================
3 * Copyright (c) 2006 The OpenSSL Project. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in
14 * the documentation and/or other materials provided with the
15 * distribution.
16 *
17 * 3. All advertising materials mentioning features or use of this
18 * software must display the following acknowledgment:
19 * "This product includes software developed by the OpenSSL Project
20 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
21 *
22 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
23 * endorse or promote products derived from this software without
24 * prior written permission. For written permission, please contact
25 * openssl-core@openssl.org.
26 *
27 * 5. Products derived from this software may not be called "OpenSSL"
28 * nor may "OpenSSL" appear in their names without prior written
29 * permission of the OpenSSL Project.
30 *
31 * 6. Redistributions of any form whatsoever must retain the following
32 * acknowledgment:
33 * "This product includes software developed by the OpenSSL Project
34 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
35 *
36 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
37 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
38 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
39 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
40 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
41 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
42 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
43 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
44 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
45 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
46 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
47 * OF THE POSSIBILITY OF SUCH DAMAGE.
48 * ====================================================================
49 *
50 */
51
52 #include <assert.h>
53 #include <stdio.h>
54 #include <stdlib.h>
55 #include <string.h>
56
57 #include <openssl/aes.h>
58
59 #define TEST_SIZE 128
60 #define BIG_TEST_SIZE 10240
61
hexdump(FILE * f,const char * title,const unsigned char * s,int l)62 static void hexdump(FILE *f,const char *title,const unsigned char *s,int l)
63 {
64 int n=0;
65
66 fprintf(f,"%s",title);
67 for( ; n < l ; ++n)
68 {
69 if((n%16) == 0)
70 fprintf(f,"\n%04x",n);
71 fprintf(f," %02x",s[n]);
72 }
73 fprintf(f,"\n");
74 }
75
76 #define MAX_VECTOR_SIZE 64
77
78 struct ige_test
79 {
80 const unsigned char key[16];
81 const unsigned char iv[32];
82 const unsigned char in[MAX_VECTOR_SIZE];
83 const unsigned char out[MAX_VECTOR_SIZE];
84 const size_t length;
85 const int encrypt;
86 };
87
88 static struct ige_test const ige_test_vectors[] = {
89 { { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
90 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f }, /* key */
91 { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
92 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
93 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
94 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f }, /* iv */
95 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
96 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
97 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
98 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, /* in */
99 { 0x1a, 0x85, 0x19, 0xa6, 0x55, 0x7b, 0xe6, 0x52,
100 0xe9, 0xda, 0x8e, 0x43, 0xda, 0x4e, 0xf4, 0x45,
101 0x3c, 0xf4, 0x56, 0xb4, 0xca, 0x48, 0x8a, 0xa3,
102 0x83, 0xc7, 0x9c, 0x98, 0xb3, 0x47, 0x97, 0xcb }, /* out */
103 32, AES_ENCRYPT }, /* test vector 0 */
104
105 { { 0x54, 0x68, 0x69, 0x73, 0x20, 0x69, 0x73, 0x20,
106 0x61, 0x6e, 0x20, 0x69, 0x6d, 0x70, 0x6c, 0x65 }, /* key */
107 { 0x6d, 0x65, 0x6e, 0x74, 0x61, 0x74, 0x69, 0x6f,
108 0x6e, 0x20, 0x6f, 0x66, 0x20, 0x49, 0x47, 0x45,
109 0x20, 0x6d, 0x6f, 0x64, 0x65, 0x20, 0x66, 0x6f,
110 0x72, 0x20, 0x4f, 0x70, 0x65, 0x6e, 0x53, 0x53 }, /* iv */
111 { 0x4c, 0x2e, 0x20, 0x4c, 0x65, 0x74, 0x27, 0x73,
112 0x20, 0x68, 0x6f, 0x70, 0x65, 0x20, 0x42, 0x65,
113 0x6e, 0x20, 0x67, 0x6f, 0x74, 0x20, 0x69, 0x74,
114 0x20, 0x72, 0x69, 0x67, 0x68, 0x74, 0x21, 0x0a }, /* in */
115 { 0x99, 0x70, 0x64, 0x87, 0xa1, 0xcd, 0xe6, 0x13,
116 0xbc, 0x6d, 0xe0, 0xb6, 0xf2, 0x4b, 0x1c, 0x7a,
117 0xa4, 0x48, 0xc8, 0xb9, 0xc3, 0x40, 0x3e, 0x34,
118 0x67, 0xa8, 0xca, 0xd8, 0x93, 0x40, 0xf5, 0x3b }, /* out */
119 32, AES_DECRYPT }, /* test vector 1 */
120 };
121
run_test_vectors(void)122 static int run_test_vectors(void)
123 {
124 unsigned int n;
125 int errs = 0;
126
127 for(n=0 ; n < sizeof(ige_test_vectors)/sizeof(ige_test_vectors[0]) ; ++n)
128 {
129 const struct ige_test * const v = &ige_test_vectors[n];
130 AES_KEY key;
131 unsigned char buf[MAX_VECTOR_SIZE];
132 unsigned char iv[AES_BLOCK_SIZE*2];
133
134 assert(v->length <= MAX_VECTOR_SIZE);
135
136 if(v->encrypt == AES_ENCRYPT)
137 AES_set_encrypt_key(v->key, 8*sizeof v->key, &key);
138 else
139 AES_set_decrypt_key(v->key, 8*sizeof v->key, &key);
140 memcpy(iv, v->iv, sizeof iv);
141 AES_ige_encrypt(v->in, buf, v->length, &key, iv, v->encrypt);
142
143 if(memcmp(v->out, buf, v->length))
144 {
145 printf("IGE test vector %d failed\n", n);
146 hexdump(stdout, "key", v->key, sizeof v->key);
147 hexdump(stdout, "iv", v->iv, sizeof v->iv);
148 hexdump(stdout, "in", v->in, v->length);
149 hexdump(stdout, "expected", v->out, v->length);
150 hexdump(stdout, "got", buf, v->length);
151
152 ++errs;
153 }
154
155 /* try with in == out */
156 memcpy(iv, v->iv, sizeof iv);
157 memcpy(buf, v->in, v->length);
158 AES_ige_encrypt(buf, buf, v->length, &key, iv, v->encrypt);
159
160 if(memcmp(v->out, buf, v->length))
161 {
162 printf("IGE test vector %d failed (with in == out)\n", n);
163 hexdump(stdout, "key", v->key, sizeof v->key);
164 hexdump(stdout, "iv", v->iv, sizeof v->iv);
165 hexdump(stdout, "in", v->in, v->length);
166 hexdump(stdout, "expected", v->out, v->length);
167 hexdump(stdout, "got", buf, v->length);
168
169 ++errs;
170 }
171 }
172
173 return errs;
174 }
175
main(int argc,char ** argv)176 int main(int argc, char **argv)
177 {
178 unsigned char rkey[16];
179 unsigned char rkey2[16];
180 AES_KEY key;
181 AES_KEY key2;
182 unsigned char plaintext[BIG_TEST_SIZE];
183 unsigned char ciphertext[BIG_TEST_SIZE];
184 unsigned char checktext[BIG_TEST_SIZE];
185 unsigned char iv[AES_BLOCK_SIZE*4];
186 unsigned char saved_iv[AES_BLOCK_SIZE*4];
187 int err = 0;
188 unsigned int n;
189 unsigned matches;
190
191 assert(BIG_TEST_SIZE >= TEST_SIZE);
192
193 arc4random_buf(rkey, sizeof(rkey));
194 arc4random_buf(plaintext, sizeof(plaintext));
195 arc4random_buf(iv, sizeof(iv));
196 memcpy(saved_iv, iv, sizeof(saved_iv));
197
198 /* Forward IGE only... */
199
200 /* Straight encrypt/decrypt */
201 AES_set_encrypt_key(rkey, 8*sizeof rkey, &key);
202 AES_ige_encrypt(plaintext, ciphertext, TEST_SIZE, &key, iv,
203 AES_ENCRYPT);
204
205 AES_set_decrypt_key(rkey, 8*sizeof rkey, &key);
206 memcpy(iv, saved_iv, sizeof iv);
207 AES_ige_encrypt(ciphertext, checktext, TEST_SIZE, &key, iv,
208 AES_DECRYPT);
209
210 if(memcmp(checktext, plaintext, TEST_SIZE))
211 {
212 printf("Encrypt+decrypt doesn't match\n");
213 hexdump(stdout, "Plaintext", plaintext, TEST_SIZE);
214 hexdump(stdout, "Checktext", checktext, TEST_SIZE);
215 ++err;
216 }
217
218 /* Now check encrypt chaining works */
219 AES_set_encrypt_key(rkey, 8*sizeof rkey, &key);
220 memcpy(iv, saved_iv, sizeof iv);
221 AES_ige_encrypt(plaintext, ciphertext, TEST_SIZE/2, &key, iv,
222 AES_ENCRYPT);
223 AES_ige_encrypt(plaintext+TEST_SIZE/2,
224 ciphertext+TEST_SIZE/2, TEST_SIZE/2,
225 &key, iv, AES_ENCRYPT);
226
227 AES_set_decrypt_key(rkey, 8*sizeof rkey, &key);
228 memcpy(iv, saved_iv, sizeof iv);
229 AES_ige_encrypt(ciphertext, checktext, TEST_SIZE, &key, iv,
230 AES_DECRYPT);
231
232 if(memcmp(checktext, plaintext, TEST_SIZE))
233 {
234 printf("Chained encrypt+decrypt doesn't match\n");
235 hexdump(stdout, "Plaintext", plaintext, TEST_SIZE);
236 hexdump(stdout, "Checktext", checktext, TEST_SIZE);
237 ++err;
238 }
239
240 /* And check decrypt chaining */
241 AES_set_encrypt_key(rkey, 8*sizeof rkey, &key);
242 memcpy(iv, saved_iv, sizeof iv);
243 AES_ige_encrypt(plaintext, ciphertext, TEST_SIZE/2, &key, iv,
244 AES_ENCRYPT);
245 AES_ige_encrypt(plaintext+TEST_SIZE/2,
246 ciphertext+TEST_SIZE/2, TEST_SIZE/2,
247 &key, iv, AES_ENCRYPT);
248
249 AES_set_decrypt_key(rkey, 8*sizeof rkey, &key);
250 memcpy(iv, saved_iv, sizeof iv);
251 AES_ige_encrypt(ciphertext, checktext, TEST_SIZE/2, &key, iv,
252 AES_DECRYPT);
253 AES_ige_encrypt(ciphertext+TEST_SIZE/2,
254 checktext+TEST_SIZE/2, TEST_SIZE/2, &key, iv,
255 AES_DECRYPT);
256
257 if(memcmp(checktext, plaintext, TEST_SIZE))
258 {
259 printf("Chained encrypt+chained decrypt doesn't match\n");
260 hexdump(stdout, "Plaintext", plaintext, TEST_SIZE);
261 hexdump(stdout, "Checktext", checktext, TEST_SIZE);
262 ++err;
263 }
264
265 /* make sure garble extends forwards only */
266 AES_set_encrypt_key(rkey, 8*sizeof rkey, &key);
267 memcpy(iv, saved_iv, sizeof iv);
268 AES_ige_encrypt(plaintext, ciphertext, sizeof plaintext, &key, iv,
269 AES_ENCRYPT);
270
271 /* corrupt halfway through */
272 ++ciphertext[sizeof ciphertext/2];
273 AES_set_decrypt_key(rkey, 8*sizeof rkey, &key);
274 memcpy(iv, saved_iv, sizeof iv);
275 AES_ige_encrypt(ciphertext, checktext, sizeof checktext, &key, iv,
276 AES_DECRYPT);
277
278 matches=0;
279 for(n=0 ; n < sizeof checktext ; ++n)
280 if(checktext[n] == plaintext[n])
281 ++matches;
282
283 if(matches > sizeof checktext/2+sizeof checktext/100)
284 {
285 printf("More than 51%% matches after garbling\n");
286 ++err;
287 }
288
289 if(matches < sizeof checktext/2)
290 {
291 printf("Garble extends backwards!\n");
292 ++err;
293 }
294
295 /* make sure garble extends both ways */
296 AES_set_encrypt_key(rkey, 8*sizeof rkey, &key);
297 AES_set_encrypt_key(rkey2, 8*sizeof rkey2, &key2);
298 AES_ige_encrypt(plaintext, ciphertext, sizeof plaintext, &key, iv,
299 AES_ENCRYPT);
300
301 /* corrupt halfway through */
302 ++ciphertext[sizeof ciphertext/2];
303 AES_set_decrypt_key(rkey, 8*sizeof rkey, &key);
304 AES_set_decrypt_key(rkey2, 8*sizeof rkey2, &key2);
305 AES_ige_encrypt(ciphertext, checktext, sizeof checktext, &key, iv,
306 AES_DECRYPT);
307
308 matches=0;
309 for(n=0 ; n < sizeof checktext ; ++n)
310 if(checktext[n] == plaintext[n])
311 ++matches;
312
313 if(matches > sizeof checktext/100)
314 {
315 printf("More than 1%% matches after bidirectional garbling\n");
316 ++err;
317 }
318
319 /* make sure garble extends both ways (2) */
320 AES_set_encrypt_key(rkey, 8*sizeof rkey, &key);
321 AES_set_encrypt_key(rkey2, 8*sizeof rkey2, &key2);
322 AES_ige_encrypt(plaintext, ciphertext, sizeof plaintext, &key, iv,
323 AES_ENCRYPT);
324
325 /* corrupt right at the end */
326 ++ciphertext[sizeof ciphertext-1];
327 AES_set_decrypt_key(rkey, 8*sizeof rkey, &key);
328 AES_set_decrypt_key(rkey2, 8*sizeof rkey2, &key2);
329 AES_ige_encrypt(ciphertext, checktext, sizeof checktext, &key, iv,
330 AES_DECRYPT);
331
332 matches=0;
333 for(n=0 ; n < sizeof checktext ; ++n)
334 if(checktext[n] == plaintext[n])
335 ++matches;
336
337 if(matches > sizeof checktext/100)
338 {
339 printf("More than 1%% matches after bidirectional garbling (2)\n");
340 ++err;
341 }
342
343 /* make sure garble extends both ways (3) */
344 AES_set_encrypt_key(rkey, 8*sizeof rkey, &key);
345 AES_set_encrypt_key(rkey2, 8*sizeof rkey2, &key2);
346 AES_ige_encrypt(plaintext, ciphertext, sizeof plaintext, &key, iv,
347 AES_ENCRYPT);
348
349 /* corrupt right at the start */
350 ++ciphertext[0];
351 AES_set_decrypt_key(rkey, 8*sizeof rkey, &key);
352 AES_set_decrypt_key(rkey2, 8*sizeof rkey2, &key2);
353 AES_ige_encrypt(ciphertext, checktext, sizeof checktext, &key, iv,
354 AES_DECRYPT);
355
356 matches=0;
357 for(n=0 ; n < sizeof checktext ; ++n)
358 if(checktext[n] == plaintext[n])
359 ++matches;
360
361 if(matches > sizeof checktext/100)
362 {
363 printf("More than 1%% matches after bidirectional garbling (3)\n");
364 ++err;
365 }
366
367 err += run_test_vectors();
368
369 return err;
370 }
371