1 | /* |
2 | * Copyright 2001-2018 The OpenSSL Project Authors. All Rights Reserved. |
3 | * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved |
4 | * |
5 | * Licensed under the Apache License 2.0 (the "License"). You may not use |
6 | * this file except in compliance with the License. You can obtain a copy |
7 | * in the file LICENSE in the source distribution or at |
8 | * https://www.openssl.org/source/license.html |
9 | */ |
10 | |
11 | #include <stdio.h> |
12 | #include <openssl/crypto.h> |
13 | #include "internal/cryptlib.h" |
14 | #include "crypto/engine.h" |
15 | #include <openssl/pem.h> |
16 | #include <openssl/evp.h> |
17 | #include <openssl/rand.h> |
18 | #include <openssl/rsa.h> |
19 | #include <openssl/dsa.h> |
20 | #include <openssl/dh.h> |
21 | |
22 | #include <openssl/hmac.h> |
23 | #include <openssl/x509v3.h> |
24 | |
25 | /* |
26 | * This testing gunk is implemented (and explained) lower down. It also |
27 | * assumes the application explicitly calls "ENGINE_load_openssl()" because |
28 | * this is no longer automatic in ENGINE_load_builtin_engines(). |
29 | */ |
30 | #define TEST_ENG_OPENSSL_RC4 |
31 | #ifndef OPENSSL_NO_STDIO |
32 | # define TEST_ENG_OPENSSL_PKEY |
33 | #endif |
34 | /* #define TEST_ENG_OPENSSL_HMAC */ |
35 | /* #define TEST_ENG_OPENSSL_HMAC_INIT */ |
36 | /* #define TEST_ENG_OPENSSL_RC4_OTHERS */ |
37 | #ifndef OPENSSL_NO_STDIO |
38 | # define TEST_ENG_OPENSSL_RC4_P_INIT |
39 | #endif |
40 | /* #define TEST_ENG_OPENSSL_RC4_P_CIPHER */ |
41 | #define TEST_ENG_OPENSSL_SHA |
42 | /* #define TEST_ENG_OPENSSL_SHA_OTHERS */ |
43 | /* #define TEST_ENG_OPENSSL_SHA_P_INIT */ |
44 | /* #define TEST_ENG_OPENSSL_SHA_P_UPDATE */ |
45 | /* #define TEST_ENG_OPENSSL_SHA_P_FINAL */ |
46 | |
47 | /* Now check what of those algorithms are actually enabled */ |
48 | #ifdef OPENSSL_NO_RC4 |
49 | # undef TEST_ENG_OPENSSL_RC4 |
50 | # undef TEST_ENG_OPENSSL_RC4_OTHERS |
51 | # undef TEST_ENG_OPENSSL_RC4_P_INIT |
52 | # undef TEST_ENG_OPENSSL_RC4_P_CIPHER |
53 | #endif |
54 | |
55 | static int openssl_destroy(ENGINE *e); |
56 | |
57 | #ifdef TEST_ENG_OPENSSL_RC4 |
58 | static int openssl_ciphers(ENGINE *e, const EVP_CIPHER **cipher, |
59 | const int **nids, int nid); |
60 | #endif |
61 | #ifdef TEST_ENG_OPENSSL_SHA |
62 | static int openssl_digests(ENGINE *e, const EVP_MD **digest, |
63 | const int **nids, int nid); |
64 | #endif |
65 | |
66 | #ifdef TEST_ENG_OPENSSL_PKEY |
67 | static EVP_PKEY *openssl_load_privkey(ENGINE *eng, const char *key_id, |
68 | UI_METHOD *ui_method, |
69 | void *callback_data); |
70 | #endif |
71 | |
72 | #ifdef TEST_ENG_OPENSSL_HMAC |
73 | static int ossl_register_hmac_meth(void); |
74 | static int ossl_pkey_meths(ENGINE *e, EVP_PKEY_METHOD **pmeth, |
75 | const int **nids, int nid); |
76 | #endif |
77 | |
78 | /* The constants used when creating the ENGINE */ |
79 | static const char *engine_openssl_id = "openssl" ; |
80 | static const char *engine_openssl_name = "Software engine support" ; |
81 | |
82 | /* |
83 | * This internal function is used by ENGINE_openssl() and possibly by the |
84 | * "dynamic" ENGINE support too |
85 | */ |
86 | static int bind_helper(ENGINE *e) |
87 | { |
88 | if (!ENGINE_set_id(e, engine_openssl_id) |
89 | || !ENGINE_set_name(e, engine_openssl_name) |
90 | || !ENGINE_set_destroy_function(e, openssl_destroy) |
91 | #ifndef TEST_ENG_OPENSSL_NO_ALGORITHMS |
92 | # ifndef OPENSSL_NO_RSA |
93 | || !ENGINE_set_RSA(e, RSA_get_default_method()) |
94 | # endif |
95 | # ifndef OPENSSL_NO_DSA |
96 | || !ENGINE_set_DSA(e, DSA_get_default_method()) |
97 | # endif |
98 | # ifndef OPENSSL_NO_EC |
99 | || !ENGINE_set_EC(e, EC_KEY_OpenSSL()) |
100 | # endif |
101 | # ifndef OPENSSL_NO_DH |
102 | || !ENGINE_set_DH(e, DH_get_default_method()) |
103 | # endif |
104 | || !ENGINE_set_RAND(e, RAND_OpenSSL()) |
105 | # ifdef TEST_ENG_OPENSSL_RC4 |
106 | || !ENGINE_set_ciphers(e, openssl_ciphers) |
107 | # endif |
108 | # ifdef TEST_ENG_OPENSSL_SHA |
109 | || !ENGINE_set_digests(e, openssl_digests) |
110 | # endif |
111 | #endif |
112 | #ifdef TEST_ENG_OPENSSL_PKEY |
113 | || !ENGINE_set_load_privkey_function(e, openssl_load_privkey) |
114 | #endif |
115 | #ifdef TEST_ENG_OPENSSL_HMAC |
116 | || !ossl_register_hmac_meth() |
117 | || !ENGINE_set_pkey_meths(e, ossl_pkey_meths) |
118 | #endif |
119 | ) |
120 | return 0; |
121 | /* |
122 | * If we add errors to this ENGINE, ensure the error handling is setup |
123 | * here |
124 | */ |
125 | /* openssl_load_error_strings(); */ |
126 | return 1; |
127 | } |
128 | |
129 | static ENGINE *engine_openssl(void) |
130 | { |
131 | ENGINE *ret = ENGINE_new(); |
132 | if (ret == NULL) |
133 | return NULL; |
134 | if (!bind_helper(ret)) { |
135 | ENGINE_free(ret); |
136 | return NULL; |
137 | } |
138 | return ret; |
139 | } |
140 | |
141 | void engine_load_openssl_int(void) |
142 | { |
143 | ENGINE *toadd = engine_openssl(); |
144 | if (!toadd) |
145 | return; |
146 | ENGINE_add(toadd); |
147 | /* |
148 | * If the "add" worked, it gets a structural reference. So either way, we |
149 | * release our just-created reference. |
150 | */ |
151 | ENGINE_free(toadd); |
152 | ERR_clear_error(); |
153 | } |
154 | |
155 | /* |
156 | * This stuff is needed if this ENGINE is being compiled into a |
157 | * self-contained shared-library. |
158 | */ |
159 | #ifdef ENGINE_DYNAMIC_SUPPORT |
160 | static int bind_fn(ENGINE *e, const char *id) |
161 | { |
162 | if (id && (strcmp(id, engine_openssl_id) != 0)) |
163 | return 0; |
164 | if (!bind_helper(e)) |
165 | return 0; |
166 | return 1; |
167 | } |
168 | |
169 | IMPLEMENT_DYNAMIC_CHECK_FN() |
170 | IMPLEMENT_DYNAMIC_BIND_FN(bind_fn) |
171 | #endif /* ENGINE_DYNAMIC_SUPPORT */ |
172 | #ifdef TEST_ENG_OPENSSL_RC4 |
173 | /*- |
174 | * This section of code compiles an "alternative implementation" of two modes of |
175 | * RC4 into this ENGINE. The result is that EVP_CIPHER operation for "rc4" |
176 | * should under normal circumstances go via this support rather than the default |
177 | * EVP support. There are other symbols to tweak the testing; |
178 | * TEST_ENC_OPENSSL_RC4_OTHERS - print a one line message to stderr each time |
179 | * we're asked for a cipher we don't support (should not happen). |
180 | * TEST_ENG_OPENSSL_RC4_P_INIT - print a one line message to stderr each time |
181 | * the "init_key" handler is called. |
182 | * TEST_ENG_OPENSSL_RC4_P_CIPHER - ditto for the "cipher" handler. |
183 | */ |
184 | # include <openssl/rc4.h> |
185 | # define TEST_RC4_KEY_SIZE 16 |
186 | typedef struct { |
187 | unsigned char key[TEST_RC4_KEY_SIZE]; |
188 | RC4_KEY ks; |
189 | } TEST_RC4_KEY; |
190 | # define test(ctx) ((TEST_RC4_KEY *)EVP_CIPHER_CTX_get_cipher_data(ctx)) |
191 | static int test_rc4_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, |
192 | const unsigned char *iv, int enc) |
193 | { |
194 | const int n = EVP_CIPHER_CTX_key_length(ctx); |
195 | |
196 | # ifdef TEST_ENG_OPENSSL_RC4_P_INIT |
197 | fprintf(stderr, "(TEST_ENG_OPENSSL_RC4) test_init_key() called\n" ); |
198 | # endif |
199 | if (n <= 0) |
200 | return n; |
201 | memcpy(&test(ctx)->key[0], key, n); |
202 | RC4_set_key(&test(ctx)->ks, n, test(ctx)->key); |
203 | return 1; |
204 | } |
205 | |
206 | static int test_rc4_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
207 | const unsigned char *in, size_t inl) |
208 | { |
209 | # ifdef TEST_ENG_OPENSSL_RC4_P_CIPHER |
210 | fprintf(stderr, "(TEST_ENG_OPENSSL_RC4) test_cipher() called\n" ); |
211 | # endif |
212 | RC4(&test(ctx)->ks, inl, in, out); |
213 | return 1; |
214 | } |
215 | |
216 | static EVP_CIPHER *r4_cipher = NULL; |
217 | static const EVP_CIPHER *test_r4_cipher(void) |
218 | { |
219 | if (r4_cipher == NULL) { |
220 | EVP_CIPHER *cipher; |
221 | |
222 | if ((cipher = EVP_CIPHER_meth_new(NID_rc4, 1, TEST_RC4_KEY_SIZE)) == NULL |
223 | || !EVP_CIPHER_meth_set_iv_length(cipher, 0) |
224 | || !EVP_CIPHER_meth_set_flags(cipher, EVP_CIPH_VARIABLE_LENGTH) |
225 | || !EVP_CIPHER_meth_set_init(cipher, test_rc4_init_key) |
226 | || !EVP_CIPHER_meth_set_do_cipher(cipher, test_rc4_cipher) |
227 | || !EVP_CIPHER_meth_set_impl_ctx_size(cipher, sizeof(TEST_RC4_KEY))) { |
228 | EVP_CIPHER_meth_free(cipher); |
229 | cipher = NULL; |
230 | } |
231 | r4_cipher = cipher; |
232 | } |
233 | return r4_cipher; |
234 | } |
235 | static void test_r4_cipher_destroy(void) |
236 | { |
237 | EVP_CIPHER_meth_free(r4_cipher); |
238 | r4_cipher = NULL; |
239 | } |
240 | |
241 | static EVP_CIPHER *r4_40_cipher = NULL; |
242 | static const EVP_CIPHER *test_r4_40_cipher(void) |
243 | { |
244 | if (r4_40_cipher == NULL) { |
245 | EVP_CIPHER *cipher; |
246 | |
247 | if ((cipher = EVP_CIPHER_meth_new(NID_rc4, 1, 5 /* 40 bits */)) == NULL |
248 | || !EVP_CIPHER_meth_set_iv_length(cipher, 0) |
249 | || !EVP_CIPHER_meth_set_flags(cipher, EVP_CIPH_VARIABLE_LENGTH) |
250 | || !EVP_CIPHER_meth_set_init(cipher, test_rc4_init_key) |
251 | || !EVP_CIPHER_meth_set_do_cipher(cipher, test_rc4_cipher) |
252 | || !EVP_CIPHER_meth_set_impl_ctx_size(cipher, sizeof(TEST_RC4_KEY))) { |
253 | EVP_CIPHER_meth_free(cipher); |
254 | cipher = NULL; |
255 | } |
256 | r4_40_cipher = cipher; |
257 | } |
258 | return r4_40_cipher; |
259 | } |
260 | static void test_r4_40_cipher_destroy(void) |
261 | { |
262 | EVP_CIPHER_meth_free(r4_40_cipher); |
263 | r4_40_cipher = NULL; |
264 | } |
265 | static int test_cipher_nids(const int **nids) |
266 | { |
267 | static int cipher_nids[4] = { 0, 0, 0, 0 }; |
268 | static int pos = 0; |
269 | static int init = 0; |
270 | |
271 | if (!init) { |
272 | const EVP_CIPHER *cipher; |
273 | if ((cipher = test_r4_cipher()) != NULL) |
274 | cipher_nids[pos++] = EVP_CIPHER_nid(cipher); |
275 | if ((cipher = test_r4_40_cipher()) != NULL) |
276 | cipher_nids[pos++] = EVP_CIPHER_nid(cipher); |
277 | cipher_nids[pos] = 0; |
278 | init = 1; |
279 | } |
280 | *nids = cipher_nids; |
281 | return pos; |
282 | } |
283 | |
284 | static int openssl_ciphers(ENGINE *e, const EVP_CIPHER **cipher, |
285 | const int **nids, int nid) |
286 | { |
287 | if (!cipher) { |
288 | /* We are returning a list of supported nids */ |
289 | return test_cipher_nids(nids); |
290 | } |
291 | /* We are being asked for a specific cipher */ |
292 | if (nid == NID_rc4) |
293 | *cipher = test_r4_cipher(); |
294 | else if (nid == NID_rc4_40) |
295 | *cipher = test_r4_40_cipher(); |
296 | else { |
297 | # ifdef TEST_ENG_OPENSSL_RC4_OTHERS |
298 | fprintf(stderr, "(TEST_ENG_OPENSSL_RC4) returning NULL for " |
299 | "nid %d\n" , nid); |
300 | # endif |
301 | *cipher = NULL; |
302 | return 0; |
303 | } |
304 | return 1; |
305 | } |
306 | #endif |
307 | |
308 | #ifdef TEST_ENG_OPENSSL_SHA |
309 | /* Much the same sort of comment as for TEST_ENG_OPENSSL_RC4 */ |
310 | # include <openssl/sha.h> |
311 | |
312 | static int test_sha1_init(EVP_MD_CTX *ctx) |
313 | { |
314 | # ifdef TEST_ENG_OPENSSL_SHA_P_INIT |
315 | fprintf(stderr, "(TEST_ENG_OPENSSL_SHA) test_sha1_init() called\n" ); |
316 | # endif |
317 | return SHA1_Init(EVP_MD_CTX_md_data(ctx)); |
318 | } |
319 | |
320 | static int test_sha1_update(EVP_MD_CTX *ctx, const void *data, size_t count) |
321 | { |
322 | # ifdef TEST_ENG_OPENSSL_SHA_P_UPDATE |
323 | fprintf(stderr, "(TEST_ENG_OPENSSL_SHA) test_sha1_update() called\n" ); |
324 | # endif |
325 | return SHA1_Update(EVP_MD_CTX_md_data(ctx), data, count); |
326 | } |
327 | |
328 | static int test_sha1_final(EVP_MD_CTX *ctx, unsigned char *md) |
329 | { |
330 | # ifdef TEST_ENG_OPENSSL_SHA_P_FINAL |
331 | fprintf(stderr, "(TEST_ENG_OPENSSL_SHA) test_sha1_final() called\n" ); |
332 | # endif |
333 | return SHA1_Final(md, EVP_MD_CTX_md_data(ctx)); |
334 | } |
335 | |
336 | static EVP_MD *sha1_md = NULL; |
337 | static const EVP_MD *test_sha_md(void) |
338 | { |
339 | if (sha1_md == NULL) { |
340 | EVP_MD *md; |
341 | |
342 | if ((md = EVP_MD_meth_new(NID_sha1, NID_sha1WithRSAEncryption)) == NULL |
343 | || !EVP_MD_meth_set_result_size(md, SHA_DIGEST_LENGTH) |
344 | || !EVP_MD_meth_set_input_blocksize(md, SHA_CBLOCK) |
345 | || !EVP_MD_meth_set_app_datasize(md, |
346 | sizeof(EVP_MD *) + sizeof(SHA_CTX)) |
347 | || !EVP_MD_meth_set_flags(md, 0) |
348 | || !EVP_MD_meth_set_init(md, test_sha1_init) |
349 | || !EVP_MD_meth_set_update(md, test_sha1_update) |
350 | || !EVP_MD_meth_set_final(md, test_sha1_final)) { |
351 | EVP_MD_meth_free(md); |
352 | md = NULL; |
353 | } |
354 | sha1_md = md; |
355 | } |
356 | return sha1_md; |
357 | } |
358 | static void test_sha_md_destroy(void) |
359 | { |
360 | EVP_MD_meth_free(sha1_md); |
361 | sha1_md = NULL; |
362 | } |
363 | static int test_digest_nids(const int **nids) |
364 | { |
365 | static int digest_nids[2] = { 0, 0 }; |
366 | static int pos = 0; |
367 | static int init = 0; |
368 | |
369 | if (!init) { |
370 | const EVP_MD *md; |
371 | if ((md = test_sha_md()) != NULL) |
372 | digest_nids[pos++] = EVP_MD_type(md); |
373 | digest_nids[pos] = 0; |
374 | init = 1; |
375 | } |
376 | *nids = digest_nids; |
377 | return pos; |
378 | } |
379 | |
380 | static int openssl_digests(ENGINE *e, const EVP_MD **digest, |
381 | const int **nids, int nid) |
382 | { |
383 | if (!digest) { |
384 | /* We are returning a list of supported nids */ |
385 | return test_digest_nids(nids); |
386 | } |
387 | /* We are being asked for a specific digest */ |
388 | if (nid == NID_sha1) |
389 | *digest = test_sha_md(); |
390 | else { |
391 | # ifdef TEST_ENG_OPENSSL_SHA_OTHERS |
392 | fprintf(stderr, "(TEST_ENG_OPENSSL_SHA) returning NULL for " |
393 | "nid %d\n" , nid); |
394 | # endif |
395 | *digest = NULL; |
396 | return 0; |
397 | } |
398 | return 1; |
399 | } |
400 | #endif |
401 | |
402 | #ifdef TEST_ENG_OPENSSL_PKEY |
403 | static EVP_PKEY *openssl_load_privkey(ENGINE *eng, const char *key_id, |
404 | UI_METHOD *ui_method, |
405 | void *callback_data) |
406 | { |
407 | BIO *in; |
408 | EVP_PKEY *key; |
409 | fprintf(stderr, "(TEST_ENG_OPENSSL_PKEY)Loading Private key %s\n" , |
410 | key_id); |
411 | in = BIO_new_file(key_id, "r" ); |
412 | if (!in) |
413 | return NULL; |
414 | key = PEM_read_bio_PrivateKey(in, NULL, 0, NULL); |
415 | BIO_free(in); |
416 | return key; |
417 | } |
418 | #endif |
419 | |
420 | #ifdef TEST_ENG_OPENSSL_HMAC |
421 | |
422 | /* |
423 | * Experimental HMAC redirection implementation: mainly copied from |
424 | * hm_pmeth.c |
425 | */ |
426 | |
427 | /* HMAC pkey context structure */ |
428 | |
429 | typedef struct { |
430 | const EVP_MD *md; /* MD for HMAC use */ |
431 | ASN1_OCTET_STRING ktmp; /* Temp storage for key */ |
432 | HMAC_CTX *ctx; |
433 | } OSSL_HMAC_PKEY_CTX; |
434 | |
435 | static int ossl_hmac_init(EVP_PKEY_CTX *ctx) |
436 | { |
437 | OSSL_HMAC_PKEY_CTX *hctx; |
438 | |
439 | if ((hctx = OPENSSL_zalloc(sizeof(*hctx))) == NULL) { |
440 | ENGINEerr(ENGINE_F_OSSL_HMAC_INIT, ERR_R_MALLOC_FAILURE); |
441 | return 0; |
442 | } |
443 | hctx->ktmp.type = V_ASN1_OCTET_STRING; |
444 | hctx->ctx = HMAC_CTX_new(); |
445 | if (hctx->ctx == NULL) { |
446 | OPENSSL_free(hctx); |
447 | return 0; |
448 | } |
449 | EVP_PKEY_CTX_set_data(ctx, hctx); |
450 | EVP_PKEY_CTX_set0_keygen_info(ctx, NULL, 0); |
451 | # ifdef TEST_ENG_OPENSSL_HMAC_INIT |
452 | fprintf(stderr, "(TEST_ENG_OPENSSL_HMAC) ossl_hmac_init() called\n" ); |
453 | # endif |
454 | return 1; |
455 | } |
456 | |
457 | static void ossl_hmac_cleanup(EVP_PKEY_CTX *ctx); |
458 | |
459 | static int ossl_hmac_copy(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src) |
460 | { |
461 | OSSL_HMAC_PKEY_CTX *sctx, *dctx; |
462 | |
463 | /* allocate memory for dst->data and a new HMAC_CTX in dst->data->ctx */ |
464 | if (!ossl_hmac_init(dst)) |
465 | return 0; |
466 | sctx = EVP_PKEY_CTX_get_data(src); |
467 | dctx = EVP_PKEY_CTX_get_data(dst); |
468 | dctx->md = sctx->md; |
469 | if (!HMAC_CTX_copy(dctx->ctx, sctx->ctx)) |
470 | goto err; |
471 | if (sctx->ktmp.data) { |
472 | if (!ASN1_OCTET_STRING_set(&dctx->ktmp, |
473 | sctx->ktmp.data, sctx->ktmp.length)) |
474 | goto err; |
475 | } |
476 | return 1; |
477 | err: |
478 | /* release HMAC_CTX in dst->data->ctx and memory allocated for dst->data */ |
479 | ossl_hmac_cleanup(dst); |
480 | return 0; |
481 | } |
482 | |
483 | static void ossl_hmac_cleanup(EVP_PKEY_CTX *ctx) |
484 | { |
485 | OSSL_HMAC_PKEY_CTX *hctx = EVP_PKEY_CTX_get_data(ctx); |
486 | |
487 | if (hctx) { |
488 | HMAC_CTX_free(hctx->ctx); |
489 | OPENSSL_clear_free(hctx->ktmp.data, hctx->ktmp.length); |
490 | OPENSSL_free(hctx); |
491 | EVP_PKEY_CTX_set_data(ctx, NULL); |
492 | } |
493 | } |
494 | |
495 | static int ossl_hmac_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey) |
496 | { |
497 | ASN1_OCTET_STRING *hkey = NULL; |
498 | OSSL_HMAC_PKEY_CTX *hctx = EVP_PKEY_CTX_get_data(ctx); |
499 | if (!hctx->ktmp.data) |
500 | return 0; |
501 | hkey = ASN1_OCTET_STRING_dup(&hctx->ktmp); |
502 | if (!hkey) |
503 | return 0; |
504 | EVP_PKEY_assign(pkey, EVP_PKEY_HMAC, hkey); |
505 | |
506 | return 1; |
507 | } |
508 | |
509 | static int ossl_int_update(EVP_MD_CTX *ctx, const void *data, size_t count) |
510 | { |
511 | OSSL_HMAC_PKEY_CTX *hctx = EVP_PKEY_CTX_get_data(EVP_MD_CTX_pkey_ctx(ctx)); |
512 | if (!HMAC_Update(hctx->ctx, data, count)) |
513 | return 0; |
514 | return 1; |
515 | } |
516 | |
517 | static int ossl_hmac_signctx_init(EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx) |
518 | { |
519 | EVP_MD_CTX_set_flags(mctx, EVP_MD_CTX_FLAG_NO_INIT); |
520 | EVP_MD_CTX_set_update_fn(mctx, ossl_int_update); |
521 | return 1; |
522 | } |
523 | |
524 | static int ossl_hmac_signctx(EVP_PKEY_CTX *ctx, unsigned char *sig, |
525 | size_t *siglen, EVP_MD_CTX *mctx) |
526 | { |
527 | unsigned int hlen; |
528 | OSSL_HMAC_PKEY_CTX *hctx = EVP_PKEY_CTX_get_data(ctx); |
529 | int l = EVP_MD_CTX_size(mctx); |
530 | |
531 | if (l < 0) |
532 | return 0; |
533 | *siglen = l; |
534 | if (!sig) |
535 | return 1; |
536 | |
537 | if (!HMAC_Final(hctx->ctx, sig, &hlen)) |
538 | return 0; |
539 | *siglen = (size_t)hlen; |
540 | return 1; |
541 | } |
542 | |
543 | static int ossl_hmac_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2) |
544 | { |
545 | OSSL_HMAC_PKEY_CTX *hctx = EVP_PKEY_CTX_get_data(ctx); |
546 | EVP_PKEY *pk; |
547 | ASN1_OCTET_STRING *key; |
548 | switch (type) { |
549 | |
550 | case EVP_PKEY_CTRL_SET_MAC_KEY: |
551 | if ((!p2 && p1 > 0) || (p1 < -1)) |
552 | return 0; |
553 | if (!ASN1_OCTET_STRING_set(&hctx->ktmp, p2, p1)) |
554 | return 0; |
555 | break; |
556 | |
557 | case EVP_PKEY_CTRL_MD: |
558 | hctx->md = p2; |
559 | break; |
560 | |
561 | case EVP_PKEY_CTRL_DIGESTINIT: |
562 | pk = EVP_PKEY_CTX_get0_pkey(ctx); |
563 | key = EVP_PKEY_get0(pk); |
564 | if (!HMAC_Init_ex(hctx->ctx, key->data, key->length, hctx->md, NULL)) |
565 | return 0; |
566 | break; |
567 | |
568 | default: |
569 | return -2; |
570 | |
571 | } |
572 | return 1; |
573 | } |
574 | |
575 | static int ossl_hmac_ctrl_str(EVP_PKEY_CTX *ctx, |
576 | const char *type, const char *value) |
577 | { |
578 | if (!value) { |
579 | return 0; |
580 | } |
581 | if (strcmp(type, "key" ) == 0) { |
582 | void *p = (void *)value; |
583 | return ossl_hmac_ctrl(ctx, EVP_PKEY_CTRL_SET_MAC_KEY, -1, p); |
584 | } |
585 | if (strcmp(type, "hexkey" ) == 0) { |
586 | unsigned char *key; |
587 | int r; |
588 | long keylen; |
589 | key = OPENSSL_hexstr2buf(value, &keylen); |
590 | if (!key) |
591 | return 0; |
592 | r = ossl_hmac_ctrl(ctx, EVP_PKEY_CTRL_SET_MAC_KEY, keylen, key); |
593 | OPENSSL_free(key); |
594 | return r; |
595 | } |
596 | return -2; |
597 | } |
598 | |
599 | static EVP_PKEY_METHOD *ossl_hmac_meth; |
600 | |
601 | static int ossl_register_hmac_meth(void) |
602 | { |
603 | EVP_PKEY_METHOD *meth; |
604 | meth = EVP_PKEY_meth_new(EVP_PKEY_HMAC, 0); |
605 | if (meth == NULL) |
606 | return 0; |
607 | EVP_PKEY_meth_set_init(meth, ossl_hmac_init); |
608 | EVP_PKEY_meth_set_copy(meth, ossl_hmac_copy); |
609 | EVP_PKEY_meth_set_cleanup(meth, ossl_hmac_cleanup); |
610 | |
611 | EVP_PKEY_meth_set_keygen(meth, 0, ossl_hmac_keygen); |
612 | |
613 | EVP_PKEY_meth_set_signctx(meth, ossl_hmac_signctx_init, |
614 | ossl_hmac_signctx); |
615 | |
616 | EVP_PKEY_meth_set_ctrl(meth, ossl_hmac_ctrl, ossl_hmac_ctrl_str); |
617 | ossl_hmac_meth = meth; |
618 | return 1; |
619 | } |
620 | |
621 | static int ossl_pkey_meths(ENGINE *e, EVP_PKEY_METHOD **pmeth, |
622 | const int **nids, int nid) |
623 | { |
624 | static int ossl_pkey_nids[] = { |
625 | EVP_PKEY_HMAC, |
626 | 0 |
627 | }; |
628 | |
629 | if (pmeth == NULL) { |
630 | *nids = ossl_pkey_nids; |
631 | return 1; |
632 | } |
633 | |
634 | if (nid == EVP_PKEY_HMAC) { |
635 | *pmeth = ossl_hmac_meth; |
636 | return 1; |
637 | } |
638 | |
639 | *pmeth = NULL; |
640 | return 0; |
641 | } |
642 | |
643 | #endif |
644 | |
645 | int openssl_destroy(ENGINE *e) |
646 | { |
647 | test_sha_md_destroy(); |
648 | #ifdef TEST_ENG_OPENSSL_RC4 |
649 | test_r4_cipher_destroy(); |
650 | test_r4_40_cipher_destroy(); |
651 | #endif |
652 | return 1; |
653 | } |
654 | |
655 | |