1 /*
2 * Copyright 2020-2022 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 * ECDSA low level APIs are deprecated for public use, but still ok for
12 * internal use - SM2 implemetation uses ECDSA_size() function.
13 */
14 #include "internal/deprecated.h"
15
16 #include <string.h> /* memcpy */
17 #include <openssl/crypto.h>
18 #include <openssl/core_dispatch.h>
19 #include <openssl/core_names.h>
20 #include <openssl/dsa.h>
21 #include <openssl/params.h>
22 #include <openssl/evp.h>
23 #include <openssl/err.h>
24 #include <openssl/proverr.h>
25 #include "internal/nelem.h"
26 #include "internal/sizes.h"
27 #include "internal/cryptlib.h"
28 #include "internal/sm3.h"
29 #include "prov/implementations.h"
30 #include "prov/providercommon.h"
31 #include "prov/provider_ctx.h"
32 #include "crypto/ec.h"
33 #include "crypto/sm2.h"
34 #include "prov/der_sm2.h"
35
36 static OSSL_FUNC_signature_newctx_fn sm2sig_newctx;
37 static OSSL_FUNC_signature_sign_init_fn sm2sig_signature_init;
38 static OSSL_FUNC_signature_verify_init_fn sm2sig_signature_init;
39 static OSSL_FUNC_signature_sign_fn sm2sig_sign;
40 static OSSL_FUNC_signature_verify_fn sm2sig_verify;
41 static OSSL_FUNC_signature_digest_sign_init_fn sm2sig_digest_signverify_init;
42 static OSSL_FUNC_signature_digest_sign_update_fn sm2sig_digest_signverify_update;
43 static OSSL_FUNC_signature_digest_sign_final_fn sm2sig_digest_sign_final;
44 static OSSL_FUNC_signature_digest_verify_init_fn sm2sig_digest_signverify_init;
45 static OSSL_FUNC_signature_digest_verify_update_fn sm2sig_digest_signverify_update;
46 static OSSL_FUNC_signature_digest_verify_final_fn sm2sig_digest_verify_final;
47 static OSSL_FUNC_signature_freectx_fn sm2sig_freectx;
48 static OSSL_FUNC_signature_dupctx_fn sm2sig_dupctx;
49 static OSSL_FUNC_signature_get_ctx_params_fn sm2sig_get_ctx_params;
50 static OSSL_FUNC_signature_gettable_ctx_params_fn sm2sig_gettable_ctx_params;
51 static OSSL_FUNC_signature_set_ctx_params_fn sm2sig_set_ctx_params;
52 static OSSL_FUNC_signature_settable_ctx_params_fn sm2sig_settable_ctx_params;
53 static OSSL_FUNC_signature_get_ctx_md_params_fn sm2sig_get_ctx_md_params;
54 static OSSL_FUNC_signature_gettable_ctx_md_params_fn sm2sig_gettable_ctx_md_params;
55 static OSSL_FUNC_signature_set_ctx_md_params_fn sm2sig_set_ctx_md_params;
56 static OSSL_FUNC_signature_settable_ctx_md_params_fn sm2sig_settable_ctx_md_params;
57
58 /*
59 * What's passed as an actual key is defined by the KEYMGMT interface.
60 * We happen to know that our KEYMGMT simply passes EC structures, so
61 * we use that here too.
62 */
63 typedef struct {
64 OSSL_LIB_CTX *libctx;
65 char *propq;
66 EC_KEY *ec;
67
68 /*
69 * Flag to termine if the 'z' digest needs to be computed and fed to the
70 * hash function.
71 * This flag should be set on initialization and the compuation should
72 * be performed only once, on first update.
73 */
74 unsigned int flag_compute_z_digest : 1;
75
76 char mdname[OSSL_MAX_NAME_SIZE];
77
78 /* The Algorithm Identifier of the combined signature algorithm */
79 unsigned char aid_buf[OSSL_MAX_ALGORITHM_ID_SIZE];
80 unsigned char *aid;
81 size_t aid_len;
82
83 /* main digest */
84 EVP_MD *md;
85 EVP_MD_CTX *mdctx;
86 size_t mdsize;
87
88 /* SM2 ID used for calculating the Z value */
89 unsigned char *id;
90 size_t id_len;
91 } PROV_SM2_CTX;
92
sm2sig_set_mdname(PROV_SM2_CTX * psm2ctx,const char * mdname)93 static int sm2sig_set_mdname(PROV_SM2_CTX *psm2ctx, const char *mdname)
94 {
95 if (psm2ctx->md == NULL) /* We need an SM3 md to compare with */
96 psm2ctx->md = EVP_MD_fetch(psm2ctx->libctx, psm2ctx->mdname,
97 psm2ctx->propq);
98 if (psm2ctx->md == NULL)
99 return 0;
100
101 if (mdname == NULL)
102 return 1;
103
104 if (strlen(mdname) >= sizeof(psm2ctx->mdname)
105 || !EVP_MD_is_a(psm2ctx->md, mdname)) {
106 ERR_raise_data(ERR_LIB_PROV, PROV_R_INVALID_DIGEST, "digest=%s",
107 mdname);
108 return 0;
109 }
110
111 OPENSSL_strlcpy(psm2ctx->mdname, mdname, sizeof(psm2ctx->mdname));
112 return 1;
113 }
114
sm2sig_newctx(void * provctx,const char * propq)115 static void *sm2sig_newctx(void *provctx, const char *propq)
116 {
117 PROV_SM2_CTX *ctx = OPENSSL_zalloc(sizeof(PROV_SM2_CTX));
118
119 if (ctx == NULL)
120 return NULL;
121
122 ctx->libctx = PROV_LIBCTX_OF(provctx);
123 if (propq != NULL && (ctx->propq = OPENSSL_strdup(propq)) == NULL) {
124 OPENSSL_free(ctx);
125 ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE);
126 return NULL;
127 }
128 ctx->mdsize = SM3_DIGEST_LENGTH;
129 strcpy(ctx->mdname, OSSL_DIGEST_NAME_SM3);
130 return ctx;
131 }
132
sm2sig_signature_init(void * vpsm2ctx,void * ec,const OSSL_PARAM params[])133 static int sm2sig_signature_init(void *vpsm2ctx, void *ec,
134 const OSSL_PARAM params[])
135 {
136 PROV_SM2_CTX *psm2ctx = (PROV_SM2_CTX *)vpsm2ctx;
137
138 if (!ossl_prov_is_running()
139 || psm2ctx == NULL)
140 return 0;
141
142 if (ec == NULL && psm2ctx->ec == NULL) {
143 ERR_raise(ERR_LIB_PROV, PROV_R_NO_KEY_SET);
144 return 0;
145 }
146
147 if (ec != NULL) {
148 if (!EC_KEY_up_ref(ec))
149 return 0;
150 EC_KEY_free(psm2ctx->ec);
151 psm2ctx->ec = ec;
152 }
153
154 return sm2sig_set_ctx_params(psm2ctx, params);
155 }
156
sm2sig_sign(void * vpsm2ctx,unsigned char * sig,size_t * siglen,size_t sigsize,const unsigned char * tbs,size_t tbslen)157 static int sm2sig_sign(void *vpsm2ctx, unsigned char *sig, size_t *siglen,
158 size_t sigsize, const unsigned char *tbs, size_t tbslen)
159 {
160 PROV_SM2_CTX *ctx = (PROV_SM2_CTX *)vpsm2ctx;
161 int ret;
162 unsigned int sltmp;
163 /* SM2 uses ECDSA_size as well */
164 size_t ecsize = ECDSA_size(ctx->ec);
165
166 if (sig == NULL) {
167 *siglen = ecsize;
168 return 1;
169 }
170
171 if (sigsize < (size_t)ecsize)
172 return 0;
173
174 if (ctx->mdsize != 0 && tbslen != ctx->mdsize)
175 return 0;
176
177 ret = ossl_sm2_internal_sign(tbs, tbslen, sig, &sltmp, ctx->ec);
178 if (ret <= 0)
179 return 0;
180
181 *siglen = sltmp;
182 return 1;
183 }
184
sm2sig_verify(void * vpsm2ctx,const unsigned char * sig,size_t siglen,const unsigned char * tbs,size_t tbslen)185 static int sm2sig_verify(void *vpsm2ctx, const unsigned char *sig, size_t siglen,
186 const unsigned char *tbs, size_t tbslen)
187 {
188 PROV_SM2_CTX *ctx = (PROV_SM2_CTX *)vpsm2ctx;
189
190 if (ctx->mdsize != 0 && tbslen != ctx->mdsize)
191 return 0;
192
193 return ossl_sm2_internal_verify(tbs, tbslen, sig, siglen, ctx->ec);
194 }
195
free_md(PROV_SM2_CTX * ctx)196 static void free_md(PROV_SM2_CTX *ctx)
197 {
198 EVP_MD_CTX_free(ctx->mdctx);
199 EVP_MD_free(ctx->md);
200 ctx->mdctx = NULL;
201 ctx->md = NULL;
202 }
203
sm2sig_digest_signverify_init(void * vpsm2ctx,const char * mdname,void * ec,const OSSL_PARAM params[])204 static int sm2sig_digest_signverify_init(void *vpsm2ctx, const char *mdname,
205 void *ec, const OSSL_PARAM params[])
206 {
207 PROV_SM2_CTX *ctx = (PROV_SM2_CTX *)vpsm2ctx;
208 int md_nid;
209 WPACKET pkt;
210 int ret = 0;
211
212 if (!sm2sig_signature_init(vpsm2ctx, ec, params)
213 || !sm2sig_set_mdname(ctx, mdname))
214 return ret;
215
216 if (ctx->mdctx == NULL) {
217 ctx->mdctx = EVP_MD_CTX_new();
218 if (ctx->mdctx == NULL)
219 goto error;
220 }
221
222 md_nid = EVP_MD_get_type(ctx->md);
223
224 /*
225 * We do not care about DER writing errors.
226 * All it really means is that for some reason, there's no
227 * AlgorithmIdentifier to be had, but the operation itself is
228 * still valid, just as long as it's not used to construct
229 * anything that needs an AlgorithmIdentifier.
230 */
231 ctx->aid_len = 0;
232 if (WPACKET_init_der(&pkt, ctx->aid_buf, sizeof(ctx->aid_buf))
233 && ossl_DER_w_algorithmIdentifier_SM2_with_MD(&pkt, -1, ctx->ec, md_nid)
234 && WPACKET_finish(&pkt)) {
235 WPACKET_get_total_written(&pkt, &ctx->aid_len);
236 ctx->aid = WPACKET_get_curr(&pkt);
237 }
238 WPACKET_cleanup(&pkt);
239
240 if (!EVP_DigestInit_ex2(ctx->mdctx, ctx->md, params))
241 goto error;
242
243 ctx->flag_compute_z_digest = 1;
244
245 ret = 1;
246
247 error:
248 return ret;
249 }
250
sm2sig_compute_z_digest(PROV_SM2_CTX * ctx)251 static int sm2sig_compute_z_digest(PROV_SM2_CTX *ctx)
252 {
253 uint8_t *z = NULL;
254 int ret = 1;
255
256 if (ctx->flag_compute_z_digest) {
257 /* Only do this once */
258 ctx->flag_compute_z_digest = 0;
259
260 if ((z = OPENSSL_zalloc(ctx->mdsize)) == NULL
261 /* get hashed prefix 'z' of tbs message */
262 || !ossl_sm2_compute_z_digest(z, ctx->md, ctx->id, ctx->id_len,
263 ctx->ec)
264 || !EVP_DigestUpdate(ctx->mdctx, z, ctx->mdsize))
265 ret = 0;
266 OPENSSL_free(z);
267 }
268
269 return ret;
270 }
271
sm2sig_digest_signverify_update(void * vpsm2ctx,const unsigned char * data,size_t datalen)272 int sm2sig_digest_signverify_update(void *vpsm2ctx, const unsigned char *data,
273 size_t datalen)
274 {
275 PROV_SM2_CTX *psm2ctx = (PROV_SM2_CTX *)vpsm2ctx;
276
277 if (psm2ctx == NULL || psm2ctx->mdctx == NULL)
278 return 0;
279
280 return sm2sig_compute_z_digest(psm2ctx)
281 && EVP_DigestUpdate(psm2ctx->mdctx, data, datalen);
282 }
283
sm2sig_digest_sign_final(void * vpsm2ctx,unsigned char * sig,size_t * siglen,size_t sigsize)284 int sm2sig_digest_sign_final(void *vpsm2ctx, unsigned char *sig, size_t *siglen,
285 size_t sigsize)
286 {
287 PROV_SM2_CTX *psm2ctx = (PROV_SM2_CTX *)vpsm2ctx;
288 unsigned char digest[EVP_MAX_MD_SIZE];
289 unsigned int dlen = 0;
290
291 if (psm2ctx == NULL || psm2ctx->mdctx == NULL)
292 return 0;
293
294 /*
295 * If sig is NULL then we're just finding out the sig size. Other fields
296 * are ignored. Defer to sm2sig_sign.
297 */
298 if (sig != NULL) {
299 if (!(sm2sig_compute_z_digest(psm2ctx)
300 && EVP_DigestFinal_ex(psm2ctx->mdctx, digest, &dlen)))
301 return 0;
302 }
303
304 return sm2sig_sign(vpsm2ctx, sig, siglen, sigsize, digest, (size_t)dlen);
305 }
306
307
sm2sig_digest_verify_final(void * vpsm2ctx,const unsigned char * sig,size_t siglen)308 int sm2sig_digest_verify_final(void *vpsm2ctx, const unsigned char *sig,
309 size_t siglen)
310 {
311 PROV_SM2_CTX *psm2ctx = (PROV_SM2_CTX *)vpsm2ctx;
312 unsigned char digest[EVP_MAX_MD_SIZE];
313 unsigned int dlen = 0;
314
315 if (psm2ctx == NULL
316 || psm2ctx->mdctx == NULL
317 || EVP_MD_get_size(psm2ctx->md) > (int)sizeof(digest))
318 return 0;
319
320 if (!(sm2sig_compute_z_digest(psm2ctx)
321 && EVP_DigestFinal_ex(psm2ctx->mdctx, digest, &dlen)))
322 return 0;
323
324 return sm2sig_verify(vpsm2ctx, sig, siglen, digest, (size_t)dlen);
325 }
326
sm2sig_freectx(void * vpsm2ctx)327 static void sm2sig_freectx(void *vpsm2ctx)
328 {
329 PROV_SM2_CTX *ctx = (PROV_SM2_CTX *)vpsm2ctx;
330
331 free_md(ctx);
332 EC_KEY_free(ctx->ec);
333 OPENSSL_free(ctx->propq);
334 OPENSSL_free(ctx->id);
335 OPENSSL_free(ctx);
336 }
337
sm2sig_dupctx(void * vpsm2ctx)338 static void *sm2sig_dupctx(void *vpsm2ctx)
339 {
340 PROV_SM2_CTX *srcctx = (PROV_SM2_CTX *)vpsm2ctx;
341 PROV_SM2_CTX *dstctx;
342
343 dstctx = OPENSSL_zalloc(sizeof(*srcctx));
344 if (dstctx == NULL)
345 return NULL;
346
347 *dstctx = *srcctx;
348 dstctx->ec = NULL;
349 dstctx->propq = NULL;
350 dstctx->md = NULL;
351 dstctx->mdctx = NULL;
352 dstctx->id = NULL;
353
354 if (srcctx->ec != NULL && !EC_KEY_up_ref(srcctx->ec))
355 goto err;
356 dstctx->ec = srcctx->ec;
357
358 if (srcctx->propq != NULL) {
359 dstctx->propq = OPENSSL_strdup(srcctx->propq);
360 if (dstctx->propq == NULL)
361 goto err;
362 }
363
364 if (srcctx->md != NULL && !EVP_MD_up_ref(srcctx->md))
365 goto err;
366 dstctx->md = srcctx->md;
367
368 if (srcctx->mdctx != NULL) {
369 dstctx->mdctx = EVP_MD_CTX_new();
370 if (dstctx->mdctx == NULL
371 || !EVP_MD_CTX_copy_ex(dstctx->mdctx, srcctx->mdctx))
372 goto err;
373 }
374
375 if (srcctx->id != NULL) {
376 dstctx->id = OPENSSL_malloc(srcctx->id_len);
377 if (dstctx->id == NULL)
378 goto err;
379 dstctx->id_len = srcctx->id_len;
380 memcpy(dstctx->id, srcctx->id, srcctx->id_len);
381 }
382
383 return dstctx;
384 err:
385 sm2sig_freectx(dstctx);
386 return NULL;
387 }
388
sm2sig_get_ctx_params(void * vpsm2ctx,OSSL_PARAM * params)389 static int sm2sig_get_ctx_params(void *vpsm2ctx, OSSL_PARAM *params)
390 {
391 PROV_SM2_CTX *psm2ctx = (PROV_SM2_CTX *)vpsm2ctx;
392 OSSL_PARAM *p;
393
394 if (psm2ctx == NULL)
395 return 0;
396
397 p = OSSL_PARAM_locate(params, OSSL_SIGNATURE_PARAM_ALGORITHM_ID);
398 if (p != NULL
399 && !OSSL_PARAM_set_octet_string(p, psm2ctx->aid, psm2ctx->aid_len))
400 return 0;
401
402 p = OSSL_PARAM_locate(params, OSSL_SIGNATURE_PARAM_DIGEST_SIZE);
403 if (p != NULL && !OSSL_PARAM_set_size_t(p, psm2ctx->mdsize))
404 return 0;
405
406 p = OSSL_PARAM_locate(params, OSSL_SIGNATURE_PARAM_DIGEST);
407 if (p != NULL && !OSSL_PARAM_set_utf8_string(p, psm2ctx->md == NULL
408 ? psm2ctx->mdname
409 : EVP_MD_get0_name(psm2ctx->md)))
410 return 0;
411
412 return 1;
413 }
414
415 static const OSSL_PARAM known_gettable_ctx_params[] = {
416 OSSL_PARAM_octet_string(OSSL_SIGNATURE_PARAM_ALGORITHM_ID, NULL, 0),
417 OSSL_PARAM_size_t(OSSL_SIGNATURE_PARAM_DIGEST_SIZE, NULL),
418 OSSL_PARAM_utf8_string(OSSL_SIGNATURE_PARAM_DIGEST, NULL, 0),
419 OSSL_PARAM_END
420 };
421
sm2sig_gettable_ctx_params(ossl_unused void * vpsm2ctx,ossl_unused void * provctx)422 static const OSSL_PARAM *sm2sig_gettable_ctx_params(ossl_unused void *vpsm2ctx,
423 ossl_unused void *provctx)
424 {
425 return known_gettable_ctx_params;
426 }
427
sm2sig_set_ctx_params(void * vpsm2ctx,const OSSL_PARAM params[])428 static int sm2sig_set_ctx_params(void *vpsm2ctx, const OSSL_PARAM params[])
429 {
430 PROV_SM2_CTX *psm2ctx = (PROV_SM2_CTX *)vpsm2ctx;
431 const OSSL_PARAM *p;
432 size_t mdsize;
433
434 if (psm2ctx == NULL)
435 return 0;
436 if (params == NULL)
437 return 1;
438
439 p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_DIST_ID);
440 if (p != NULL) {
441 void *tmp_id = NULL;
442 size_t tmp_idlen = 0;
443
444 /*
445 * If the 'z' digest has already been computed, the ID is set too late
446 */
447 if (!psm2ctx->flag_compute_z_digest)
448 return 0;
449
450 if (p->data_size != 0
451 && !OSSL_PARAM_get_octet_string(p, &tmp_id, 0, &tmp_idlen))
452 return 0;
453 OPENSSL_free(psm2ctx->id);
454 psm2ctx->id = tmp_id;
455 psm2ctx->id_len = tmp_idlen;
456 }
457
458 /*
459 * The following code checks that the size is the same as the SM3 digest
460 * size returning an error otherwise.
461 * If there is ever any different digest algorithm allowed with SM2
462 * this needs to be adjusted accordingly.
463 */
464 p = OSSL_PARAM_locate_const(params, OSSL_SIGNATURE_PARAM_DIGEST_SIZE);
465 if (p != NULL && (!OSSL_PARAM_get_size_t(p, &mdsize)
466 || mdsize != psm2ctx->mdsize))
467 return 0;
468
469 p = OSSL_PARAM_locate_const(params, OSSL_SIGNATURE_PARAM_DIGEST);
470 if (p != NULL) {
471 char *mdname = NULL;
472
473 if (!OSSL_PARAM_get_utf8_string(p, &mdname, 0))
474 return 0;
475 if (!sm2sig_set_mdname(psm2ctx, mdname)) {
476 OPENSSL_free(mdname);
477 return 0;
478 }
479 OPENSSL_free(mdname);
480 }
481
482 return 1;
483 }
484
485 static const OSSL_PARAM known_settable_ctx_params[] = {
486 OSSL_PARAM_size_t(OSSL_SIGNATURE_PARAM_DIGEST_SIZE, NULL),
487 OSSL_PARAM_utf8_string(OSSL_SIGNATURE_PARAM_DIGEST, NULL, 0),
488 OSSL_PARAM_octet_string(OSSL_PKEY_PARAM_DIST_ID, NULL, 0),
489 OSSL_PARAM_END
490 };
491
sm2sig_settable_ctx_params(ossl_unused void * vpsm2ctx,ossl_unused void * provctx)492 static const OSSL_PARAM *sm2sig_settable_ctx_params(ossl_unused void *vpsm2ctx,
493 ossl_unused void *provctx)
494 {
495 return known_settable_ctx_params;
496 }
497
sm2sig_get_ctx_md_params(void * vpsm2ctx,OSSL_PARAM * params)498 static int sm2sig_get_ctx_md_params(void *vpsm2ctx, OSSL_PARAM *params)
499 {
500 PROV_SM2_CTX *psm2ctx = (PROV_SM2_CTX *)vpsm2ctx;
501
502 if (psm2ctx->mdctx == NULL)
503 return 0;
504
505 return EVP_MD_CTX_get_params(psm2ctx->mdctx, params);
506 }
507
sm2sig_gettable_ctx_md_params(void * vpsm2ctx)508 static const OSSL_PARAM *sm2sig_gettable_ctx_md_params(void *vpsm2ctx)
509 {
510 PROV_SM2_CTX *psm2ctx = (PROV_SM2_CTX *)vpsm2ctx;
511
512 if (psm2ctx->md == NULL)
513 return 0;
514
515 return EVP_MD_gettable_ctx_params(psm2ctx->md);
516 }
517
sm2sig_set_ctx_md_params(void * vpsm2ctx,const OSSL_PARAM params[])518 static int sm2sig_set_ctx_md_params(void *vpsm2ctx, const OSSL_PARAM params[])
519 {
520 PROV_SM2_CTX *psm2ctx = (PROV_SM2_CTX *)vpsm2ctx;
521
522 if (psm2ctx->mdctx == NULL)
523 return 0;
524
525 return EVP_MD_CTX_set_params(psm2ctx->mdctx, params);
526 }
527
sm2sig_settable_ctx_md_params(void * vpsm2ctx)528 static const OSSL_PARAM *sm2sig_settable_ctx_md_params(void *vpsm2ctx)
529 {
530 PROV_SM2_CTX *psm2ctx = (PROV_SM2_CTX *)vpsm2ctx;
531
532 if (psm2ctx->md == NULL)
533 return 0;
534
535 return EVP_MD_settable_ctx_params(psm2ctx->md);
536 }
537
538 const OSSL_DISPATCH ossl_sm2_signature_functions[] = {
539 { OSSL_FUNC_SIGNATURE_NEWCTX, (void (*)(void))sm2sig_newctx },
540 { OSSL_FUNC_SIGNATURE_SIGN_INIT, (void (*)(void))sm2sig_signature_init },
541 { OSSL_FUNC_SIGNATURE_SIGN, (void (*)(void))sm2sig_sign },
542 { OSSL_FUNC_SIGNATURE_VERIFY_INIT, (void (*)(void))sm2sig_signature_init },
543 { OSSL_FUNC_SIGNATURE_VERIFY, (void (*)(void))sm2sig_verify },
544 { OSSL_FUNC_SIGNATURE_DIGEST_SIGN_INIT,
545 (void (*)(void))sm2sig_digest_signverify_init },
546 { OSSL_FUNC_SIGNATURE_DIGEST_SIGN_UPDATE,
547 (void (*)(void))sm2sig_digest_signverify_update },
548 { OSSL_FUNC_SIGNATURE_DIGEST_SIGN_FINAL,
549 (void (*)(void))sm2sig_digest_sign_final },
550 { OSSL_FUNC_SIGNATURE_DIGEST_VERIFY_INIT,
551 (void (*)(void))sm2sig_digest_signverify_init },
552 { OSSL_FUNC_SIGNATURE_DIGEST_VERIFY_UPDATE,
553 (void (*)(void))sm2sig_digest_signverify_update },
554 { OSSL_FUNC_SIGNATURE_DIGEST_VERIFY_FINAL,
555 (void (*)(void))sm2sig_digest_verify_final },
556 { OSSL_FUNC_SIGNATURE_FREECTX, (void (*)(void))sm2sig_freectx },
557 { OSSL_FUNC_SIGNATURE_DUPCTX, (void (*)(void))sm2sig_dupctx },
558 { OSSL_FUNC_SIGNATURE_GET_CTX_PARAMS, (void (*)(void))sm2sig_get_ctx_params },
559 { OSSL_FUNC_SIGNATURE_GETTABLE_CTX_PARAMS,
560 (void (*)(void))sm2sig_gettable_ctx_params },
561 { OSSL_FUNC_SIGNATURE_SET_CTX_PARAMS, (void (*)(void))sm2sig_set_ctx_params },
562 { OSSL_FUNC_SIGNATURE_SETTABLE_CTX_PARAMS,
563 (void (*)(void))sm2sig_settable_ctx_params },
564 { OSSL_FUNC_SIGNATURE_GET_CTX_MD_PARAMS,
565 (void (*)(void))sm2sig_get_ctx_md_params },
566 { OSSL_FUNC_SIGNATURE_GETTABLE_CTX_MD_PARAMS,
567 (void (*)(void))sm2sig_gettable_ctx_md_params },
568 { OSSL_FUNC_SIGNATURE_SET_CTX_MD_PARAMS,
569 (void (*)(void))sm2sig_set_ctx_md_params },
570 { OSSL_FUNC_SIGNATURE_SETTABLE_CTX_MD_PARAMS,
571 (void (*)(void))sm2sig_settable_ctx_md_params },
572 { 0, NULL }
573 };
574