1 /*
2 * Copyright 2001-2020 The OpenSSL Project Authors. All Rights Reserved.
3 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
4 *
5 * Licensed under the OpenSSL license (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 */
bind_helper(ENGINE * e)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
engine_openssl(void)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
engine_load_openssl_int(void)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
bind_fn(ENGINE * e,const char * id)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))
test_rc4_init_key(EVP_CIPHER_CTX * ctx,const unsigned char * key,const unsigned char * iv,int enc)191 static int test_rc4_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
192 const unsigned char *iv, int enc)
193 {
194 # ifdef TEST_ENG_OPENSSL_RC4_P_INIT
195 fprintf(stderr, "(TEST_ENG_OPENSSL_RC4) test_init_key() called\n");
196 # endif
197 memcpy(&test(ctx)->key[0], key, EVP_CIPHER_CTX_key_length(ctx));
198 RC4_set_key(&test(ctx)->ks, EVP_CIPHER_CTX_key_length(ctx),
199 test(ctx)->key);
200 return 1;
201 }
202
test_rc4_cipher(EVP_CIPHER_CTX * ctx,unsigned char * out,const unsigned char * in,size_t inl)203 static int test_rc4_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
204 const unsigned char *in, size_t inl)
205 {
206 # ifdef TEST_ENG_OPENSSL_RC4_P_CIPHER
207 fprintf(stderr, "(TEST_ENG_OPENSSL_RC4) test_cipher() called\n");
208 # endif
209 RC4(&test(ctx)->ks, inl, in, out);
210 return 1;
211 }
212
213 static EVP_CIPHER *r4_cipher = NULL;
test_r4_cipher(void)214 static const EVP_CIPHER *test_r4_cipher(void)
215 {
216 if (r4_cipher == NULL) {
217 EVP_CIPHER *cipher;
218
219 if ((cipher = EVP_CIPHER_meth_new(NID_rc4, 1, TEST_RC4_KEY_SIZE)) == NULL
220 || !EVP_CIPHER_meth_set_iv_length(cipher, 0)
221 || !EVP_CIPHER_meth_set_flags(cipher, EVP_CIPH_VARIABLE_LENGTH)
222 || !EVP_CIPHER_meth_set_init(cipher, test_rc4_init_key)
223 || !EVP_CIPHER_meth_set_do_cipher(cipher, test_rc4_cipher)
224 || !EVP_CIPHER_meth_set_impl_ctx_size(cipher, sizeof(TEST_RC4_KEY))) {
225 EVP_CIPHER_meth_free(cipher);
226 cipher = NULL;
227 }
228 r4_cipher = cipher;
229 }
230 return r4_cipher;
231 }
test_r4_cipher_destroy(void)232 static void test_r4_cipher_destroy(void)
233 {
234 EVP_CIPHER_meth_free(r4_cipher);
235 r4_cipher = NULL;
236 }
237
238 static EVP_CIPHER *r4_40_cipher = NULL;
test_r4_40_cipher(void)239 static const EVP_CIPHER *test_r4_40_cipher(void)
240 {
241 if (r4_40_cipher == NULL) {
242 EVP_CIPHER *cipher;
243
244 if ((cipher = EVP_CIPHER_meth_new(NID_rc4, 1, 5 /* 40 bits */)) == NULL
245 || !EVP_CIPHER_meth_set_iv_length(cipher, 0)
246 || !EVP_CIPHER_meth_set_flags(cipher, EVP_CIPH_VARIABLE_LENGTH)
247 || !EVP_CIPHER_meth_set_init(cipher, test_rc4_init_key)
248 || !EVP_CIPHER_meth_set_do_cipher(cipher, test_rc4_cipher)
249 || !EVP_CIPHER_meth_set_impl_ctx_size(cipher, sizeof(TEST_RC4_KEY))) {
250 EVP_CIPHER_meth_free(cipher);
251 cipher = NULL;
252 }
253 r4_40_cipher = cipher;
254 }
255 return r4_40_cipher;
256 }
test_r4_40_cipher_destroy(void)257 static void test_r4_40_cipher_destroy(void)
258 {
259 EVP_CIPHER_meth_free(r4_40_cipher);
260 r4_40_cipher = NULL;
261 }
test_cipher_nids(const int ** nids)262 static int test_cipher_nids(const int **nids)
263 {
264 static int cipher_nids[4] = { 0, 0, 0, 0 };
265 static int pos = 0;
266 static int init = 0;
267
268 if (!init) {
269 const EVP_CIPHER *cipher;
270 if ((cipher = test_r4_cipher()) != NULL)
271 cipher_nids[pos++] = EVP_CIPHER_nid(cipher);
272 if ((cipher = test_r4_40_cipher()) != NULL)
273 cipher_nids[pos++] = EVP_CIPHER_nid(cipher);
274 cipher_nids[pos] = 0;
275 init = 1;
276 }
277 *nids = cipher_nids;
278 return pos;
279 }
280
openssl_ciphers(ENGINE * e,const EVP_CIPHER ** cipher,const int ** nids,int nid)281 static int openssl_ciphers(ENGINE *e, const EVP_CIPHER **cipher,
282 const int **nids, int nid)
283 {
284 if (!cipher) {
285 /* We are returning a list of supported nids */
286 return test_cipher_nids(nids);
287 }
288 /* We are being asked for a specific cipher */
289 if (nid == NID_rc4)
290 *cipher = test_r4_cipher();
291 else if (nid == NID_rc4_40)
292 *cipher = test_r4_40_cipher();
293 else {
294 # ifdef TEST_ENG_OPENSSL_RC4_OTHERS
295 fprintf(stderr, "(TEST_ENG_OPENSSL_RC4) returning NULL for "
296 "nid %d\n", nid);
297 # endif
298 *cipher = NULL;
299 return 0;
300 }
301 return 1;
302 }
303 #endif
304
305 #ifdef TEST_ENG_OPENSSL_SHA
306 /* Much the same sort of comment as for TEST_ENG_OPENSSL_RC4 */
307 # include <openssl/sha.h>
308
test_sha1_init(EVP_MD_CTX * ctx)309 static int test_sha1_init(EVP_MD_CTX *ctx)
310 {
311 # ifdef TEST_ENG_OPENSSL_SHA_P_INIT
312 fprintf(stderr, "(TEST_ENG_OPENSSL_SHA) test_sha1_init() called\n");
313 # endif
314 return SHA1_Init(EVP_MD_CTX_md_data(ctx));
315 }
316
test_sha1_update(EVP_MD_CTX * ctx,const void * data,size_t count)317 static int test_sha1_update(EVP_MD_CTX *ctx, const void *data, size_t count)
318 {
319 # ifdef TEST_ENG_OPENSSL_SHA_P_UPDATE
320 fprintf(stderr, "(TEST_ENG_OPENSSL_SHA) test_sha1_update() called\n");
321 # endif
322 return SHA1_Update(EVP_MD_CTX_md_data(ctx), data, count);
323 }
324
test_sha1_final(EVP_MD_CTX * ctx,unsigned char * md)325 static int test_sha1_final(EVP_MD_CTX *ctx, unsigned char *md)
326 {
327 # ifdef TEST_ENG_OPENSSL_SHA_P_FINAL
328 fprintf(stderr, "(TEST_ENG_OPENSSL_SHA) test_sha1_final() called\n");
329 # endif
330 return SHA1_Final(md, EVP_MD_CTX_md_data(ctx));
331 }
332
333 static EVP_MD *sha1_md = NULL;
test_sha_md(void)334 static const EVP_MD *test_sha_md(void)
335 {
336 if (sha1_md == NULL) {
337 EVP_MD *md;
338
339 if ((md = EVP_MD_meth_new(NID_sha1, NID_sha1WithRSAEncryption)) == NULL
340 || !EVP_MD_meth_set_result_size(md, SHA_DIGEST_LENGTH)
341 || !EVP_MD_meth_set_input_blocksize(md, SHA_CBLOCK)
342 || !EVP_MD_meth_set_app_datasize(md,
343 sizeof(EVP_MD *) + sizeof(SHA_CTX))
344 || !EVP_MD_meth_set_flags(md, 0)
345 || !EVP_MD_meth_set_init(md, test_sha1_init)
346 || !EVP_MD_meth_set_update(md, test_sha1_update)
347 || !EVP_MD_meth_set_final(md, test_sha1_final)) {
348 EVP_MD_meth_free(md);
349 md = NULL;
350 }
351 sha1_md = md;
352 }
353 return sha1_md;
354 }
test_sha_md_destroy(void)355 static void test_sha_md_destroy(void)
356 {
357 EVP_MD_meth_free(sha1_md);
358 sha1_md = NULL;
359 }
test_digest_nids(const int ** nids)360 static int test_digest_nids(const int **nids)
361 {
362 static int digest_nids[2] = { 0, 0 };
363 static int pos = 0;
364 static int init = 0;
365
366 if (!init) {
367 const EVP_MD *md;
368 if ((md = test_sha_md()) != NULL)
369 digest_nids[pos++] = EVP_MD_type(md);
370 digest_nids[pos] = 0;
371 init = 1;
372 }
373 *nids = digest_nids;
374 return pos;
375 }
376
openssl_digests(ENGINE * e,const EVP_MD ** digest,const int ** nids,int nid)377 static int openssl_digests(ENGINE *e, const EVP_MD **digest,
378 const int **nids, int nid)
379 {
380 if (!digest) {
381 /* We are returning a list of supported nids */
382 return test_digest_nids(nids);
383 }
384 /* We are being asked for a specific digest */
385 if (nid == NID_sha1)
386 *digest = test_sha_md();
387 else {
388 # ifdef TEST_ENG_OPENSSL_SHA_OTHERS
389 fprintf(stderr, "(TEST_ENG_OPENSSL_SHA) returning NULL for "
390 "nid %d\n", nid);
391 # endif
392 *digest = NULL;
393 return 0;
394 }
395 return 1;
396 }
397 #endif
398
399 #ifdef TEST_ENG_OPENSSL_PKEY
openssl_load_privkey(ENGINE * eng,const char * key_id,UI_METHOD * ui_method,void * callback_data)400 static EVP_PKEY *openssl_load_privkey(ENGINE *eng, const char *key_id,
401 UI_METHOD *ui_method,
402 void *callback_data)
403 {
404 BIO *in;
405 EVP_PKEY *key;
406 fprintf(stderr, "(TEST_ENG_OPENSSL_PKEY)Loading Private key %s\n",
407 key_id);
408 in = BIO_new_file(key_id, "r");
409 if (!in)
410 return NULL;
411 key = PEM_read_bio_PrivateKey(in, NULL, 0, NULL);
412 BIO_free(in);
413 return key;
414 }
415 #endif
416
417 #ifdef TEST_ENG_OPENSSL_HMAC
418
419 /*
420 * Experimental HMAC redirection implementation: mainly copied from
421 * hm_pmeth.c
422 */
423
424 /* HMAC pkey context structure */
425
426 typedef struct {
427 const EVP_MD *md; /* MD for HMAC use */
428 ASN1_OCTET_STRING ktmp; /* Temp storage for key */
429 HMAC_CTX *ctx;
430 } OSSL_HMAC_PKEY_CTX;
431
ossl_hmac_init(EVP_PKEY_CTX * ctx)432 static int ossl_hmac_init(EVP_PKEY_CTX *ctx)
433 {
434 OSSL_HMAC_PKEY_CTX *hctx;
435
436 if ((hctx = OPENSSL_zalloc(sizeof(*hctx))) == NULL) {
437 ENGINEerr(ENGINE_F_OSSL_HMAC_INIT, ERR_R_MALLOC_FAILURE);
438 return 0;
439 }
440 hctx->ktmp.type = V_ASN1_OCTET_STRING;
441 hctx->ctx = HMAC_CTX_new();
442 if (hctx->ctx == NULL) {
443 OPENSSL_free(hctx);
444 return 0;
445 }
446 EVP_PKEY_CTX_set_data(ctx, hctx);
447 EVP_PKEY_CTX_set0_keygen_info(ctx, NULL, 0);
448 # ifdef TEST_ENG_OPENSSL_HMAC_INIT
449 fprintf(stderr, "(TEST_ENG_OPENSSL_HMAC) ossl_hmac_init() called\n");
450 # endif
451 return 1;
452 }
453
454 static void ossl_hmac_cleanup(EVP_PKEY_CTX *ctx);
455
ossl_hmac_copy(EVP_PKEY_CTX * dst,EVP_PKEY_CTX * src)456 static int ossl_hmac_copy(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src)
457 {
458 OSSL_HMAC_PKEY_CTX *sctx, *dctx;
459
460 /* allocate memory for dst->data and a new HMAC_CTX in dst->data->ctx */
461 if (!ossl_hmac_init(dst))
462 return 0;
463 sctx = EVP_PKEY_CTX_get_data(src);
464 dctx = EVP_PKEY_CTX_get_data(dst);
465 dctx->md = sctx->md;
466 if (!HMAC_CTX_copy(dctx->ctx, sctx->ctx))
467 goto err;
468 if (sctx->ktmp.data) {
469 if (!ASN1_OCTET_STRING_set(&dctx->ktmp,
470 sctx->ktmp.data, sctx->ktmp.length))
471 goto err;
472 }
473 return 1;
474 err:
475 /* release HMAC_CTX in dst->data->ctx and memory allocated for dst->data */
476 ossl_hmac_cleanup(dst);
477 return 0;
478 }
479
ossl_hmac_cleanup(EVP_PKEY_CTX * ctx)480 static void ossl_hmac_cleanup(EVP_PKEY_CTX *ctx)
481 {
482 OSSL_HMAC_PKEY_CTX *hctx = EVP_PKEY_CTX_get_data(ctx);
483
484 if (hctx) {
485 HMAC_CTX_free(hctx->ctx);
486 OPENSSL_clear_free(hctx->ktmp.data, hctx->ktmp.length);
487 OPENSSL_free(hctx);
488 EVP_PKEY_CTX_set_data(ctx, NULL);
489 }
490 }
491
ossl_hmac_keygen(EVP_PKEY_CTX * ctx,EVP_PKEY * pkey)492 static int ossl_hmac_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
493 {
494 ASN1_OCTET_STRING *hkey = NULL;
495 OSSL_HMAC_PKEY_CTX *hctx = EVP_PKEY_CTX_get_data(ctx);
496 if (!hctx->ktmp.data)
497 return 0;
498 hkey = ASN1_OCTET_STRING_dup(&hctx->ktmp);
499 if (!hkey)
500 return 0;
501 EVP_PKEY_assign(pkey, EVP_PKEY_HMAC, hkey);
502
503 return 1;
504 }
505
ossl_int_update(EVP_MD_CTX * ctx,const void * data,size_t count)506 static int ossl_int_update(EVP_MD_CTX *ctx, const void *data, size_t count)
507 {
508 OSSL_HMAC_PKEY_CTX *hctx = EVP_PKEY_CTX_get_data(EVP_MD_CTX_pkey_ctx(ctx));
509 if (!HMAC_Update(hctx->ctx, data, count))
510 return 0;
511 return 1;
512 }
513
ossl_hmac_signctx_init(EVP_PKEY_CTX * ctx,EVP_MD_CTX * mctx)514 static int ossl_hmac_signctx_init(EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx)
515 {
516 EVP_MD_CTX_set_flags(mctx, EVP_MD_CTX_FLAG_NO_INIT);
517 EVP_MD_CTX_set_update_fn(mctx, ossl_int_update);
518 return 1;
519 }
520
ossl_hmac_signctx(EVP_PKEY_CTX * ctx,unsigned char * sig,size_t * siglen,EVP_MD_CTX * mctx)521 static int ossl_hmac_signctx(EVP_PKEY_CTX *ctx, unsigned char *sig,
522 size_t *siglen, EVP_MD_CTX *mctx)
523 {
524 unsigned int hlen;
525 OSSL_HMAC_PKEY_CTX *hctx = EVP_PKEY_CTX_get_data(ctx);
526 int l = EVP_MD_CTX_size(mctx);
527
528 if (l < 0)
529 return 0;
530 *siglen = l;
531 if (!sig)
532 return 1;
533
534 if (!HMAC_Final(hctx->ctx, sig, &hlen))
535 return 0;
536 *siglen = (size_t)hlen;
537 return 1;
538 }
539
ossl_hmac_ctrl(EVP_PKEY_CTX * ctx,int type,int p1,void * p2)540 static int ossl_hmac_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2)
541 {
542 OSSL_HMAC_PKEY_CTX *hctx = EVP_PKEY_CTX_get_data(ctx);
543 EVP_PKEY *pk;
544 ASN1_OCTET_STRING *key;
545 switch (type) {
546
547 case EVP_PKEY_CTRL_SET_MAC_KEY:
548 if ((!p2 && p1 > 0) || (p1 < -1))
549 return 0;
550 if (!ASN1_OCTET_STRING_set(&hctx->ktmp, p2, p1))
551 return 0;
552 break;
553
554 case EVP_PKEY_CTRL_MD:
555 hctx->md = p2;
556 break;
557
558 case EVP_PKEY_CTRL_DIGESTINIT:
559 pk = EVP_PKEY_CTX_get0_pkey(ctx);
560 key = EVP_PKEY_get0(pk);
561 if (!HMAC_Init_ex(hctx->ctx, key->data, key->length, hctx->md, NULL))
562 return 0;
563 break;
564
565 default:
566 return -2;
567
568 }
569 return 1;
570 }
571
ossl_hmac_ctrl_str(EVP_PKEY_CTX * ctx,const char * type,const char * value)572 static int ossl_hmac_ctrl_str(EVP_PKEY_CTX *ctx,
573 const char *type, const char *value)
574 {
575 if (!value) {
576 return 0;
577 }
578 if (strcmp(type, "key") == 0) {
579 void *p = (void *)value;
580 return ossl_hmac_ctrl(ctx, EVP_PKEY_CTRL_SET_MAC_KEY, -1, p);
581 }
582 if (strcmp(type, "hexkey") == 0) {
583 unsigned char *key;
584 int r;
585 long keylen;
586 key = OPENSSL_hexstr2buf(value, &keylen);
587 if (!key)
588 return 0;
589 r = ossl_hmac_ctrl(ctx, EVP_PKEY_CTRL_SET_MAC_KEY, keylen, key);
590 OPENSSL_free(key);
591 return r;
592 }
593 return -2;
594 }
595
596 static EVP_PKEY_METHOD *ossl_hmac_meth;
597
ossl_register_hmac_meth(void)598 static int ossl_register_hmac_meth(void)
599 {
600 EVP_PKEY_METHOD *meth;
601 meth = EVP_PKEY_meth_new(EVP_PKEY_HMAC, 0);
602 if (meth == NULL)
603 return 0;
604 EVP_PKEY_meth_set_init(meth, ossl_hmac_init);
605 EVP_PKEY_meth_set_copy(meth, ossl_hmac_copy);
606 EVP_PKEY_meth_set_cleanup(meth, ossl_hmac_cleanup);
607
608 EVP_PKEY_meth_set_keygen(meth, 0, ossl_hmac_keygen);
609
610 EVP_PKEY_meth_set_signctx(meth, ossl_hmac_signctx_init,
611 ossl_hmac_signctx);
612
613 EVP_PKEY_meth_set_ctrl(meth, ossl_hmac_ctrl, ossl_hmac_ctrl_str);
614 ossl_hmac_meth = meth;
615 return 1;
616 }
617
ossl_pkey_meths(ENGINE * e,EVP_PKEY_METHOD ** pmeth,const int ** nids,int nid)618 static int ossl_pkey_meths(ENGINE *e, EVP_PKEY_METHOD **pmeth,
619 const int **nids, int nid)
620 {
621 static int ossl_pkey_nids[] = {
622 EVP_PKEY_HMAC,
623 0
624 };
625 if (!pmeth) {
626 *nids = ossl_pkey_nids;
627 return 1;
628 }
629
630 if (nid == EVP_PKEY_HMAC) {
631 *pmeth = ossl_hmac_meth;
632 return 1;
633 }
634
635 *pmeth = NULL;
636 return 0;
637 }
638
639 #endif
640
openssl_destroy(ENGINE * e)641 int openssl_destroy(ENGINE *e)
642 {
643 test_sha_md_destroy();
644 #ifdef TEST_ENG_OPENSSL_RC4
645 test_r4_cipher_destroy();
646 test_r4_40_cipher_destroy();
647 #endif
648 return 1;
649 }
650
651