hmactest.c revision 1.2 1 /*
2 * Copyright 1995-2025 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10 /*
11 * HMAC low level APIs are deprecated for public use, but still ok for internal
12 * use.
13 */
14 #include "internal/deprecated.h"
15
16 #include <stdio.h>
17 #include <string.h>
18 #include <stdlib.h>
19
20 #include "internal/nelem.h"
21
22 # include <openssl/hmac.h>
23 # include <openssl/sha.h>
24 # ifndef OPENSSL_NO_MD5
25 # include <openssl/md5.h>
26 # endif
27
28 # ifdef CHARSET_EBCDIC
29 # include <openssl/ebcdic.h>
30 # endif
31
32 #include "testutil.h"
33
34 # ifndef OPENSSL_NO_MD5
35 static struct test_st {
36 const char key[16];
37 int key_len;
38 const unsigned char data[64];
39 int data_len;
40 const char *digest;
41 } test[8] = {
42 {
43 "", 0, "More text test vectors to stuff up EBCDIC machines :-)", 54,
44 "e9139d1e6ee064ef8cf514fc7dc83e86",
45 },
46 {
47 "\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b",
48 16, "Hi There", 8,
49 "9294727a3638bb1c13f48ef8158bfc9d",
50 },
51 {
52 "Jefe", 4, "what do ya want for nothing?", 28,
53 "750c783e6ab0b503eaa86e310a5db738",
54 },
55 {
56 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa",
57 16, {
58 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd,
59 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd,
60 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd,
61 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd,
62 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd
63 }, 50, "56be34521d144c88dbb8c733f0e8b3f6",
64 },
65 {
66 "", 0, "My test data", 12,
67 "61afdecb95429ef494d61fdee15990cabf0826fc"
68 },
69 {
70 "", 0, "My test data", 12,
71 "2274b195d90ce8e03406f4b526a47e0787a88a65479938f1a5baa3ce0f079776"
72 },
73 {
74 "123456", 6, "My test data", 12,
75 "bab53058ae861a7f191abe2d0145cbb123776a6369ee3f9d79ce455667e411dd"
76 },
77 {
78 "12345", 5, "My test data again", 18,
79 "a12396ceddd2a85f4c656bc1e0aa50c78cffde3e"
80 }
81 };
82 # endif
83
84 static char *pt(unsigned char *md, unsigned int len);
85
86 #define UC(a) ((const unsigned char *)(a))
87
88
89 # ifndef OPENSSL_NO_MD5
90 static int test_hmac_md5(int idx)
91 {
92 char *p;
93 # ifdef CHARSET_EBCDIC
94 ebcdic2ascii(test[0].data, test[0].data, test[0].data_len);
95 ebcdic2ascii(test[1].data, test[1].data, test[1].data_len);
96 ebcdic2ascii(test[2].key, test[2].key, test[2].key_len);
97 ebcdic2ascii(test[2].data, test[2].data, test[2].data_len);
98 # endif
99
100 p = pt(HMAC(EVP_md5(),
101 test[idx].key, test[idx].key_len,
102 UC(test[idx].data), test[idx].data_len, NULL, NULL),
103 MD5_DIGEST_LENGTH);
104
105 return TEST_ptr(p) && TEST_str_eq(p, test[idx].digest);
106 }
107 # endif
108
109 static int test_hmac_bad(void)
110 {
111 HMAC_CTX *ctx = NULL;
112 int ret = 0;
113
114 ctx = HMAC_CTX_new();
115 if (!TEST_ptr(ctx)
116 || !TEST_ptr_null(HMAC_CTX_get_md(ctx))
117 || !TEST_false(HMAC_Init_ex(ctx, NULL, 0, NULL, NULL))
118 || !TEST_false(HMAC_Update(ctx, UC(test[4].data), test[4].data_len))
119 || !TEST_false(HMAC_Init_ex(ctx, NULL, 0, EVP_sha1(), NULL))
120 || !TEST_false(HMAC_Update(ctx, UC(test[4].data), test[4].data_len)))
121 goto err;
122
123 ret = 1;
124 err:
125 HMAC_CTX_free(ctx);
126 return ret;
127 }
128
129 static int test_hmac_run(void)
130 {
131 char *p;
132 HMAC_CTX *ctx = NULL;
133 unsigned char buf[EVP_MAX_MD_SIZE];
134 unsigned int len;
135 int ret = 0;
136
137 if (!TEST_ptr(ctx = HMAC_CTX_new()))
138 return 0;
139 HMAC_CTX_reset(ctx);
140
141 if (!TEST_ptr(ctx)
142 || !TEST_ptr_null(HMAC_CTX_get_md(ctx))
143 || !TEST_false(HMAC_Init_ex(ctx, NULL, 0, NULL, NULL))
144 || !TEST_false(HMAC_Update(ctx, UC(test[4].data), test[4].data_len))
145 || !TEST_false(HMAC_Init_ex(ctx, test[4].key, -1, EVP_sha1(), NULL)))
146 goto err;
147
148 if (!TEST_true(HMAC_Init_ex(ctx, test[4].key, test[4].key_len, EVP_sha1(), NULL))
149 || !TEST_true(HMAC_Update(ctx, UC(test[4].data), test[4].data_len))
150 || !TEST_true(HMAC_Final(ctx, buf, &len)))
151 goto err;
152
153 p = pt(buf, len);
154 if (!TEST_ptr(p) || !TEST_str_eq(p, test[4].digest))
155 goto err;
156
157 if (!TEST_false(HMAC_Init_ex(ctx, NULL, 0, EVP_sha256(), NULL)))
158 goto err;
159
160 if (!TEST_true(HMAC_Init_ex(ctx, test[5].key, test[5].key_len, EVP_sha256(), NULL))
161 || !TEST_ptr_eq(HMAC_CTX_get_md(ctx), EVP_sha256())
162 || !TEST_true(HMAC_Update(ctx, UC(test[5].data), test[5].data_len))
163 || !TEST_true(HMAC_Final(ctx, buf, &len)))
164 goto err;
165
166 p = pt(buf, len);
167 if (!TEST_ptr(p) || !TEST_str_eq(p, test[5].digest))
168 goto err;
169
170 if (!TEST_true(HMAC_Init_ex(ctx, test[6].key, test[6].key_len, NULL, NULL))
171 || !TEST_true(HMAC_Update(ctx, UC(test[6].data), test[6].data_len))
172 || !TEST_true(HMAC_Final(ctx, buf, &len)))
173 goto err;
174 p = pt(buf, len);
175 if (!TEST_ptr(p) || !TEST_str_eq(p, test[6].digest))
176 goto err;
177
178 /* Test reusing a key */
179 if (!TEST_true(HMAC_Init_ex(ctx, NULL, 0, NULL, NULL))
180 || !TEST_true(HMAC_Update(ctx, UC(test[6].data), test[6].data_len))
181 || !TEST_true(HMAC_Final(ctx, buf, &len)))
182 goto err;
183 p = pt(buf, len);
184 if (!TEST_ptr(p) || !TEST_str_eq(p, test[6].digest))
185 goto err;
186
187 /*
188 * Test reusing a key where the digest is provided again but is the same as
189 * last time
190 */
191 if (!TEST_true(HMAC_Init_ex(ctx, NULL, 0, EVP_sha256(), NULL))
192 || !TEST_true(HMAC_Update(ctx, UC(test[6].data), test[6].data_len))
193 || !TEST_true(HMAC_Final(ctx, buf, &len)))
194 goto err;
195 p = pt(buf, len);
196 if (!TEST_ptr(p) || !TEST_str_eq(p, test[6].digest))
197 goto err;
198
199 ret = 1;
200 err:
201 HMAC_CTX_free(ctx);
202 return ret;
203 }
204
205
206 static int test_hmac_single_shot(void)
207 {
208 char *p;
209
210 /* Test single-shot with NULL key. */
211 p = pt(HMAC(EVP_sha1(), NULL, 0, test[4].data, test[4].data_len,
212 NULL, NULL), SHA_DIGEST_LENGTH);
213 if (!TEST_ptr(p) || !TEST_str_eq(p, test[4].digest))
214 return 0;
215
216 return 1;
217 }
218
219 /* https://github.com/openssl/openssl/issues/13210 */
220 static int test_hmac_final_update_fail(void)
221 {
222 HMAC_CTX *ctx = NULL;
223 unsigned char buf[EVP_MAX_MD_SIZE];
224 unsigned int len;
225 int ret = 0;
226
227 /* HMAC_Update() after HMAC_Final() must return an error. */
228 if (!TEST_ptr(ctx = HMAC_CTX_new()))
229 goto err;
230 if (!TEST_true(HMAC_Init_ex(ctx, test[5].key, test[5].key_len, EVP_sha256(), NULL))
231 || !TEST_true(HMAC_Update(ctx, test[5].data, test[5].data_len))
232 || !TEST_true(HMAC_Final(ctx, buf, &len))
233 || !TEST_false(HMAC_Update(ctx, test[5].data, test[5].data_len))
234 || !TEST_false(HMAC_Final(ctx, buf, &len)))
235 goto err;
236
237 ret = 1;
238 err:
239 HMAC_CTX_free(ctx);
240 return ret;
241 }
242
243 static int test_hmac_copy(void)
244 {
245 char *p;
246 HMAC_CTX *ctx = NULL, *ctx2 = NULL;
247 unsigned char buf[EVP_MAX_MD_SIZE];
248 unsigned int len;
249 int ret = 0;
250
251 ctx = HMAC_CTX_new();
252 ctx2 = HMAC_CTX_new();
253 if (!TEST_ptr(ctx) || !TEST_ptr(ctx2))
254 goto err;
255
256 if (!TEST_true(HMAC_Init_ex(ctx, test[7].key, test[7].key_len, EVP_sha1(), NULL))
257 || !TEST_true(HMAC_Update(ctx, UC(test[7].data), test[7].data_len))
258 || !TEST_true(HMAC_CTX_copy(ctx2, ctx))
259 || !TEST_true(HMAC_Final(ctx2, buf, &len)))
260 goto err;
261
262 p = pt(buf, len);
263 if (!TEST_ptr(p) || !TEST_str_eq(p, test[7].digest))
264 goto err;
265
266 ret = 1;
267 err:
268 HMAC_CTX_free(ctx2);
269 HMAC_CTX_free(ctx);
270 return ret;
271 }
272
273 static int test_hmac_copy_uninited(void)
274 {
275 const unsigned char key[24] = {0};
276 const unsigned char ct[166] = {0};
277 EVP_PKEY *pkey = NULL;
278 EVP_MD_CTX *ctx = NULL;
279 EVP_MD_CTX *ctx_tmp = NULL;
280 int res = 0;
281
282 if (!TEST_ptr(ctx = EVP_MD_CTX_new())
283 || !TEST_ptr(pkey = EVP_PKEY_new_mac_key(EVP_PKEY_HMAC, NULL,
284 key, sizeof(key)))
285 || !TEST_true(EVP_DigestSignInit(ctx, NULL, EVP_sha1(), NULL, pkey))
286 || !TEST_ptr(ctx_tmp = EVP_MD_CTX_new())
287 || !TEST_true(EVP_MD_CTX_copy(ctx_tmp, ctx)))
288 goto err;
289 EVP_MD_CTX_free(ctx);
290 ctx = ctx_tmp;
291 ctx_tmp = NULL;
292
293 if (!TEST_true(EVP_DigestSignUpdate(ctx, ct, sizeof(ct))))
294 goto err;
295 res = 1;
296 err:
297 EVP_MD_CTX_free(ctx);
298 EVP_MD_CTX_free(ctx_tmp);
299 EVP_PKEY_free(pkey);
300 return res;
301 }
302
303 #ifndef OPENSSL_NO_MD5
304 # define OSSL_HEX_CHARS_PER_BYTE 2
305 static char *pt(unsigned char *md, unsigned int len)
306 {
307 unsigned int i;
308 static char buf[201];
309
310 if (md == NULL)
311 return NULL;
312 for (i = 0; i < len && (i + 1) * OSSL_HEX_CHARS_PER_BYTE < sizeof(buf); i++)
313 BIO_snprintf(buf + i * OSSL_HEX_CHARS_PER_BYTE,
314 OSSL_HEX_CHARS_PER_BYTE + 1, "%02x", md[i]);
315 return buf;
316 }
317 #endif
318
319 static struct test_chunks_st {
320 const char *md_name;
321 char key[256];
322 int key_len;
323 int chunks;
324 int chunk_size[10];
325 const char *digest;
326 } test_chunks[12] = {
327 {
328 "SHA224",
329 "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef", 64,
330 4, { 1, 50, 200, 4000 },
331 "40821a39dd54f01443b3f96b9370a15023fbdd819a074ffc4b703c77"
332 },
333 {
334 "SHA224",
335 "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef"
336 "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef"
337 "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef", 192,
338 10, { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 },
339 "55ffa85e53e9a68f41c8d653c60b4ada9566d22aed3811834882661c"
340 },
341 {
342 "SHA224", "0123456789abcdef0123456789abcdef", 32,
343 4, { 100, 4096, 100, 3896 },
344 "0fd18e7d8e974f401b29bf0502a71f6a9b77804e9191380ce9f48377"
345 },
346 {
347 "SHA256",
348 "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef", 64,
349 4, { 1, 50, 200, 4000 },
350 "f67a46fa77c66d3ea5b3ffb9a10afb3e501eaadd16b15978fdee9f014a782140"
351 },
352 {
353 "SHA256",
354 "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef"
355 "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef"
356 "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef", 192,
357 10, { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 },
358 "21a6f61ed6dbec30b58557a80988ff610d69b50b2e96d75863ab50f99da58c9d"
359 },
360 {
361 "SHA256", "0123456789abcdef0123456789abcdef", 32,
362 4, { 100, 4096, 100, 3896 },
363 "7bfd45c1bdde9b79244816b0aea0a67ea954a182e74c60410bfbc1fdc4842660"
364 },
365 {
366 "SHA384",
367 "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef", 64,
368 4, { 1, 50, 200, 4000 },
369 "e270e3c8ca3f2796a0c29cc7569fcec7584b04db26da64326aca0d17bd7731de"
370 "938694b273f3dafe6e2dc123cde26640"
371 },
372 {
373 "SHA384",
374 "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef"
375 "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef"
376 "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef", 192,
377 10, { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 },
378 "7036fd7d251298975acd18938471243e92fffe67be158f16c910c400576592d2"
379 "618c3c077ef25d703312668bd2d813ff"
380 },
381 {
382 "SHA384", "0123456789abcdef0123456789abcdef", 32,
383 4, { 100, 8192, 100, 8092 },
384 "0af8224145bd0812d2e34ba1f980ed4d218461271a54cce75dc43d36eda01e4e"
385 "ff4299c1ebf533a7ae636fa3e6aff903"
386 },
387 {
388 "SHA512",
389 "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef", 64,
390 4, { 1, 50, 200, 4000 },
391 "4016e960e2342553d4b9d34fb57355ab8b7f33af5dc2676fc1189e94b38f2b2c"
392 "a0ec8dc3c8b95fb1109d58480cea1e8f88e02f34ad79b303e4809373c46c1b16"
393 },
394 {
395 "SHA512",
396 "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef"
397 "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef"
398 "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef", 192,
399 10, { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 },
400 "7ceb6a421fc19434bcb7ec9c8a15ea524dbfb896c24f5f517513f06597de99b1"
401 "918eb6b2472e52215ec7d1b5544766f79ff6ac6d1eb456f19a93819fa2d43c29"
402 },
403 {
404 "SHA512", "0123456789abcdef0123456789abcdef", 32,
405 4, { 100, 8192, 100, 8092 },
406 "cebf722ffdff5f0e4cbfbd480cd086101d4627d30d42f1f7cf21c43251018069"
407 "854d8e030b5a54cec1e2245d5b4629ff928806d4eababb427d751ec7c274047f"
408 },
409 };
410
411 static int test_hmac_chunks(int idx)
412 {
413 char *p;
414 HMAC_CTX *ctx = NULL;
415 unsigned char buf[32768];
416 unsigned int len;
417 const EVP_MD *md;
418 int i, ret = 0;
419
420 if (!TEST_ptr(md = EVP_get_digestbyname(test_chunks[idx].md_name)))
421 goto err;
422
423 if (!TEST_ptr(ctx = HMAC_CTX_new()))
424 goto err;
425
426 #ifdef CHARSET_EBCDIC
427 ebcdic2ascii(test_chunks[idx].key, test_chunks[idx].key,
428 test_chunks[idx].key_len);
429 #endif
430
431 if (!TEST_true(HMAC_Init_ex(ctx, test_chunks[idx].key,
432 test_chunks[idx].key_len, md, NULL)))
433 goto err;
434
435 for (i = 0; i < test_chunks[idx].chunks; i++) {
436 if (!TEST_true((test_chunks[idx].chunk_size[i] < (int)sizeof(buf))))
437 goto err;
438 memset(buf, i, test_chunks[idx].chunk_size[i]);
439 if (!TEST_true(HMAC_Update(ctx, buf, test_chunks[idx].chunk_size[i])))
440 goto err;
441 }
442
443 if (!TEST_true(HMAC_Final(ctx, buf, &len)))
444 goto err;
445
446 p = pt(buf, len);
447 if (!TEST_ptr(p) || !TEST_str_eq(p, test_chunks[idx].digest))
448 goto err;
449
450 ret = 1;
451
452 err:
453 HMAC_CTX_free(ctx);
454 return ret;
455 }
456
457 int setup_tests(void)
458 {
459 ADD_ALL_TESTS(test_hmac_md5, 4);
460 ADD_TEST(test_hmac_single_shot);
461 ADD_TEST(test_hmac_bad);
462 ADD_TEST(test_hmac_run);
463 ADD_TEST(test_hmac_final_update_fail);
464 ADD_TEST(test_hmac_copy);
465 ADD_TEST(test_hmac_copy_uninited);
466 ADD_ALL_TESTS(test_hmac_chunks,
467 sizeof(test_chunks) / sizeof(struct test_chunks_st));
468 return 1;
469 }
470
471