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6f4b7663 | 1 | /* |
a28d06f3 | 2 | * Copyright 2019-2021 The OpenSSL Project Authors. All Rights Reserved. |
6f4b7663 RL |
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 | * RSA low level APIs are deprecated for public use, but still ok for | |
12 | * internal use. | |
13 | */ | |
14 | #include "internal/deprecated.h" | |
15 | ||
bbde8566 | 16 | #include "e_os.h" /* strcasecmp */ |
6f4b7663 RL |
17 | #include <string.h> |
18 | #include <openssl/crypto.h> | |
23c48d94 | 19 | #include <openssl/core_dispatch.h> |
6f4b7663 RL |
20 | #include <openssl/core_names.h> |
21 | #include <openssl/err.h> | |
22 | #include <openssl/rsa.h> | |
23 | #include <openssl/params.h> | |
24 | #include <openssl/evp.h> | |
2741128e | 25 | #include <openssl/proverr.h> |
6f4b7663 RL |
26 | #include "internal/cryptlib.h" |
27 | #include "internal/nelem.h" | |
28 | #include "internal/sizes.h" | |
29 | #include "crypto/rsa.h" | |
f590a5ea | 30 | #include "prov/providercommon.h" |
6f4b7663 RL |
31 | #include "prov/implementations.h" |
32 | #include "prov/provider_ctx.h" | |
6f5837dc | 33 | #include "prov/der_rsa.h" |
7a810fac | 34 | #include "prov/securitycheck.h" |
3f699197 SL |
35 | |
36 | #define RSA_DEFAULT_DIGEST_NAME OSSL_DIGEST_NAME_SHA1 | |
6f4b7663 | 37 | |
363b1e5d DMSP |
38 | static OSSL_FUNC_signature_newctx_fn rsa_newctx; |
39 | static OSSL_FUNC_signature_sign_init_fn rsa_sign_init; | |
40 | static OSSL_FUNC_signature_verify_init_fn rsa_verify_init; | |
41 | static OSSL_FUNC_signature_verify_recover_init_fn rsa_verify_recover_init; | |
42 | static OSSL_FUNC_signature_sign_fn rsa_sign; | |
43 | static OSSL_FUNC_signature_verify_fn rsa_verify; | |
44 | static OSSL_FUNC_signature_verify_recover_fn rsa_verify_recover; | |
45 | static OSSL_FUNC_signature_digest_sign_init_fn rsa_digest_sign_init; | |
46 | static OSSL_FUNC_signature_digest_sign_update_fn rsa_digest_signverify_update; | |
47 | static OSSL_FUNC_signature_digest_sign_final_fn rsa_digest_sign_final; | |
48 | static OSSL_FUNC_signature_digest_verify_init_fn rsa_digest_verify_init; | |
49 | static OSSL_FUNC_signature_digest_verify_update_fn rsa_digest_signverify_update; | |
50 | static OSSL_FUNC_signature_digest_verify_final_fn rsa_digest_verify_final; | |
51 | static OSSL_FUNC_signature_freectx_fn rsa_freectx; | |
52 | static OSSL_FUNC_signature_dupctx_fn rsa_dupctx; | |
53 | static OSSL_FUNC_signature_get_ctx_params_fn rsa_get_ctx_params; | |
54 | static OSSL_FUNC_signature_gettable_ctx_params_fn rsa_gettable_ctx_params; | |
55 | static OSSL_FUNC_signature_set_ctx_params_fn rsa_set_ctx_params; | |
56 | static OSSL_FUNC_signature_settable_ctx_params_fn rsa_settable_ctx_params; | |
57 | static OSSL_FUNC_signature_get_ctx_md_params_fn rsa_get_ctx_md_params; | |
58 | static OSSL_FUNC_signature_gettable_ctx_md_params_fn rsa_gettable_ctx_md_params; | |
59 | static OSSL_FUNC_signature_set_ctx_md_params_fn rsa_set_ctx_md_params; | |
60 | static OSSL_FUNC_signature_settable_ctx_md_params_fn rsa_settable_ctx_md_params; | |
6f4b7663 RL |
61 | |
62 | static OSSL_ITEM padding_item[] = { | |
b8086652 | 63 | { RSA_PKCS1_PADDING, OSSL_PKEY_RSA_PAD_MODE_PKCSV15 }, |
b8086652 SL |
64 | { RSA_NO_PADDING, OSSL_PKEY_RSA_PAD_MODE_NONE }, |
65 | { RSA_X931_PADDING, OSSL_PKEY_RSA_PAD_MODE_X931 }, | |
66 | { RSA_PKCS1_PSS_PADDING, OSSL_PKEY_RSA_PAD_MODE_PSS }, | |
6f4b7663 RL |
67 | { 0, NULL } |
68 | }; | |
69 | ||
70 | /* | |
71 | * What's passed as an actual key is defined by the KEYMGMT interface. | |
72 | * We happen to know that our KEYMGMT simply passes RSA structures, so | |
73 | * we use that here too. | |
74 | */ | |
75 | ||
76 | typedef struct { | |
b4250010 | 77 | OSSL_LIB_CTX *libctx; |
2c6094ba | 78 | char *propq; |
6f4b7663 | 79 | RSA *rsa; |
0ec36bf1 | 80 | int operation; |
6f4b7663 RL |
81 | |
82 | /* | |
83 | * Flag to determine if the hash function can be changed (1) or not (0) | |
84 | * Because it's dangerous to change during a DigestSign or DigestVerify | |
85 | * operation, this flag is cleared by their Init function, and set again | |
86 | * by their Final function. | |
87 | */ | |
88 | unsigned int flag_allow_md : 1; | |
bbde8566 | 89 | unsigned int mgf1_md_set : 1; |
6f4b7663 RL |
90 | |
91 | /* main digest */ | |
92 | EVP_MD *md; | |
93 | EVP_MD_CTX *mdctx; | |
94 | int mdnid; | |
95 | char mdname[OSSL_MAX_NAME_SIZE]; /* Purely informational */ | |
96 | ||
97 | /* RSA padding mode */ | |
98 | int pad_mode; | |
99 | /* message digest for MGF1 */ | |
100 | EVP_MD *mgf1_md; | |
bbde8566 | 101 | int mgf1_mdnid; |
6f4b7663 RL |
102 | char mgf1_mdname[OSSL_MAX_NAME_SIZE]; /* Purely informational */ |
103 | /* PSS salt length */ | |
104 | int saltlen; | |
105 | /* Minimum salt length or -1 if no PSS parameter restriction */ | |
106 | int min_saltlen; | |
107 | ||
108 | /* Temp buffer */ | |
109 | unsigned char *tbuf; | |
110 | ||
111 | } PROV_RSA_CTX; | |
112 | ||
bbde8566 TM |
113 | /* True if PSS parameters are restricted */ |
114 | #define rsa_pss_restricted(prsactx) (prsactx->min_saltlen != -1) | |
115 | ||
6f4b7663 RL |
116 | static size_t rsa_get_md_size(const PROV_RSA_CTX *prsactx) |
117 | { | |
118 | if (prsactx->md != NULL) | |
119 | return EVP_MD_size(prsactx->md); | |
120 | return 0; | |
121 | } | |
122 | ||
bbde8566 TM |
123 | static int rsa_check_padding(const PROV_RSA_CTX *prsactx, |
124 | const char *mdname, const char *mgf1_mdname, | |
125 | int mdnid) | |
6f4b7663 | 126 | { |
bbde8566 TM |
127 | switch(prsactx->pad_mode) { |
128 | case RSA_NO_PADDING: | |
129 | ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_PADDING_MODE); | |
6f4b7663 | 130 | return 0; |
bbde8566 TM |
131 | case RSA_X931_PADDING: |
132 | if (RSA_X931_hash_id(mdnid) == -1) { | |
133 | ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_X931_DIGEST); | |
134 | return 0; | |
135 | } | |
136 | break; | |
137 | case RSA_PKCS1_PSS_PADDING: | |
138 | if (rsa_pss_restricted(prsactx)) | |
139 | if ((mdname != NULL && !EVP_MD_is_a(prsactx->md, mdname)) | |
140 | || (mgf1_mdname != NULL | |
141 | && !EVP_MD_is_a(prsactx->mgf1_md, mgf1_mdname))) { | |
142 | ERR_raise(ERR_LIB_PROV, PROV_R_DIGEST_NOT_ALLOWED); | |
143 | return 0; | |
144 | } | |
145 | break; | |
146 | default: | |
147 | break; | |
6f4b7663 RL |
148 | } |
149 | ||
150 | return 1; | |
151 | } | |
152 | ||
bbde8566 | 153 | static int rsa_check_parameters(PROV_RSA_CTX *prsactx, int min_saltlen) |
2d553660 RL |
154 | { |
155 | if (prsactx->pad_mode == RSA_PKCS1_PSS_PADDING) { | |
156 | int max_saltlen; | |
157 | ||
158 | /* See if minimum salt length exceeds maximum possible */ | |
6ce6ad39 | 159 | max_saltlen = RSA_size(prsactx->rsa) - EVP_MD_size(prsactx->md); |
2d553660 RL |
160 | if ((RSA_bits(prsactx->rsa) & 0x7) == 1) |
161 | max_saltlen--; | |
bbde8566 | 162 | if (min_saltlen < 0 || min_saltlen > max_saltlen) { |
2d553660 RL |
163 | ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_SALT_LENGTH); |
164 | return 0; | |
165 | } | |
bbde8566 | 166 | prsactx->min_saltlen = min_saltlen; |
2d553660 RL |
167 | } |
168 | return 1; | |
169 | } | |
170 | ||
2c6094ba | 171 | static void *rsa_newctx(void *provctx, const char *propq) |
6f4b7663 | 172 | { |
2d553660 RL |
173 | PROV_RSA_CTX *prsactx = NULL; |
174 | char *propq_copy = NULL; | |
6f4b7663 | 175 | |
f590a5ea P |
176 | if (!ossl_prov_is_running()) |
177 | return NULL; | |
178 | ||
2d553660 RL |
179 | if ((prsactx = OPENSSL_zalloc(sizeof(PROV_RSA_CTX))) == NULL |
180 | || (propq != NULL | |
181 | && (propq_copy = OPENSSL_strdup(propq)) == NULL)) { | |
182 | OPENSSL_free(prsactx); | |
183 | ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE); | |
6f4b7663 | 184 | return NULL; |
2d553660 | 185 | } |
6f4b7663 | 186 | |
a829b735 | 187 | prsactx->libctx = PROV_LIBCTX_OF(provctx); |
6f4b7663 | 188 | prsactx->flag_allow_md = 1; |
2d553660 | 189 | prsactx->propq = propq_copy; |
6f4b7663 RL |
190 | return prsactx; |
191 | } | |
192 | ||
bbde8566 TM |
193 | static int rsa_pss_compute_saltlen(PROV_RSA_CTX *ctx) |
194 | { | |
195 | int saltlen = ctx->saltlen; | |
196 | ||
197 | if (saltlen == RSA_PSS_SALTLEN_DIGEST) { | |
198 | saltlen = EVP_MD_size(ctx->md); | |
199 | } else if (saltlen == RSA_PSS_SALTLEN_AUTO || saltlen == RSA_PSS_SALTLEN_MAX) { | |
200 | saltlen = RSA_size(ctx->rsa) - EVP_MD_size(ctx->md) - 2; | |
201 | if ((RSA_bits(ctx->rsa) & 0x7) == 1) | |
202 | saltlen--; | |
203 | } | |
204 | if (saltlen < 0) { | |
205 | ERR_raise(ERR_LIB_PROV, ERR_R_INTERNAL_ERROR); | |
206 | return -1; | |
207 | } else if (saltlen < ctx->min_saltlen) { | |
208 | ERR_raise_data(ERR_LIB_PROV, PROV_R_PSS_SALTLEN_TOO_SMALL, | |
209 | "minimum salt length: %d, actual salt length: %d", | |
210 | ctx->min_saltlen, saltlen); | |
211 | return -1; | |
212 | } | |
213 | return saltlen; | |
214 | } | |
215 | ||
216 | static unsigned char *rsa_generate_signature_aid(PROV_RSA_CTX *ctx, | |
217 | unsigned char *aid_buf, | |
218 | size_t buf_len, | |
219 | size_t *aid_len) | |
220 | { | |
221 | WPACKET pkt; | |
222 | unsigned char *aid = NULL; | |
223 | int saltlen; | |
224 | RSA_PSS_PARAMS_30 pss_params; | |
a56fcf20 | 225 | int ret; |
bbde8566 TM |
226 | |
227 | if (!WPACKET_init_der(&pkt, aid_buf, buf_len)) { | |
228 | ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE); | |
229 | return NULL; | |
230 | } | |
231 | ||
232 | switch(ctx->pad_mode) { | |
a56fcf20 TM |
233 | case RSA_PKCS1_PADDING: |
234 | ret = ossl_DER_w_algorithmIdentifier_MDWithRSAEncryption(&pkt, -1, | |
235 | ctx->mdnid); | |
236 | ||
237 | if (ret > 0) { | |
bbde8566 | 238 | break; |
a56fcf20 TM |
239 | } else if (ret == 0) { |
240 | ERR_raise(ERR_LIB_PROV, ERR_R_INTERNAL_ERROR); | |
241 | goto cleanup; | |
242 | } | |
243 | ERR_raise_data(ERR_LIB_PROV, ERR_R_UNSUPPORTED, | |
244 | "Algorithm ID generation - md NID: %d", | |
245 | ctx->mdnid); | |
246 | goto cleanup; | |
247 | case RSA_PKCS1_PSS_PADDING: | |
248 | saltlen = rsa_pss_compute_saltlen(ctx); | |
249 | if (saltlen < 0) | |
bbde8566 | 250 | goto cleanup; |
a56fcf20 TM |
251 | if (!ossl_rsa_pss_params_30_set_defaults(&pss_params) |
252 | || !ossl_rsa_pss_params_30_set_hashalg(&pss_params, ctx->mdnid) | |
253 | || !ossl_rsa_pss_params_30_set_maskgenhashalg(&pss_params, | |
254 | ctx->mgf1_mdnid) | |
255 | || !ossl_rsa_pss_params_30_set_saltlen(&pss_params, saltlen) | |
256 | || !ossl_DER_w_algorithmIdentifier_RSA_PSS(&pkt, -1, | |
257 | RSA_FLAG_TYPE_RSASSAPSS, | |
258 | &pss_params)) { | |
259 | ERR_raise(ERR_LIB_PROV, ERR_R_INTERNAL_ERROR); | |
260 | goto cleanup; | |
261 | } | |
262 | break; | |
263 | default: | |
264 | ERR_raise_data(ERR_LIB_PROV, ERR_R_UNSUPPORTED, | |
265 | "Algorithm ID generation - pad mode: %d", | |
266 | ctx->pad_mode); | |
267 | goto cleanup; | |
bbde8566 TM |
268 | } |
269 | if (WPACKET_finish(&pkt)) { | |
270 | WPACKET_get_total_written(&pkt, aid_len); | |
271 | aid = WPACKET_get_curr(&pkt); | |
272 | } | |
273 | cleanup: | |
274 | WPACKET_cleanup(&pkt); | |
275 | return aid; | |
276 | } | |
6f4b7663 | 277 | |
6f4b7663 RL |
278 | static int rsa_setup_md(PROV_RSA_CTX *ctx, const char *mdname, |
279 | const char *mdprops) | |
280 | { | |
2c6094ba RL |
281 | if (mdprops == NULL) |
282 | mdprops = ctx->propq; | |
283 | ||
6f4b7663 | 284 | if (mdname != NULL) { |
3f699197 | 285 | EVP_MD *md = EVP_MD_fetch(ctx->libctx, mdname, mdprops); |
49ed5ba8 | 286 | int sha1_allowed = (ctx->operation != EVP_PKEY_OP_SIGN); |
6ce58488 MC |
287 | int md_nid = ossl_digest_rsa_sign_get_md_nid(ctx->libctx, md, |
288 | sha1_allowed); | |
2de64666 | 289 | size_t mdname_len = strlen(mdname); |
6f4b7663 | 290 | |
6f5837dc | 291 | if (md == NULL |
6a2ab4a9 | 292 | || md_nid <= 0 |
bbde8566 | 293 | || !rsa_check_padding(ctx, mdname, NULL, md_nid) |
2de64666 | 294 | || mdname_len >= sizeof(ctx->mdname)) { |
2d553660 RL |
295 | if (md == NULL) |
296 | ERR_raise_data(ERR_LIB_PROV, PROV_R_INVALID_DIGEST, | |
297 | "%s could not be fetched", mdname); | |
6a2ab4a9 | 298 | if (md_nid <= 0) |
2d553660 RL |
299 | ERR_raise_data(ERR_LIB_PROV, PROV_R_DIGEST_NOT_ALLOWED, |
300 | "digest=%s", mdname); | |
2de64666 NT |
301 | if (mdname_len >= sizeof(ctx->mdname)) |
302 | ERR_raise_data(ERR_LIB_PROV, PROV_R_INVALID_DIGEST, | |
303 | "%s exceeds name buffer length", mdname); | |
6f4b7663 RL |
304 | EVP_MD_free(md); |
305 | return 0; | |
306 | } | |
307 | ||
bbde8566 TM |
308 | if (!ctx->mgf1_md_set) { |
309 | if (!EVP_MD_up_ref(md)) { | |
310 | EVP_MD_free(md); | |
311 | return 0; | |
312 | } | |
313 | EVP_MD_free(ctx->mgf1_md); | |
314 | ctx->mgf1_md = md; | |
315 | ctx->mgf1_mdnid = md_nid; | |
316 | OPENSSL_strlcpy(ctx->mgf1_mdname, mdname, sizeof(ctx->mgf1_mdname)); | |
317 | } | |
318 | ||
6f4b7663 RL |
319 | EVP_MD_CTX_free(ctx->mdctx); |
320 | EVP_MD_free(ctx->md); | |
6f4b7663 | 321 | |
6f5837dc | 322 | ctx->mdctx = NULL; |
6f4b7663 RL |
323 | ctx->md = md; |
324 | ctx->mdnid = md_nid; | |
325 | OPENSSL_strlcpy(ctx->mdname, mdname, sizeof(ctx->mdname)); | |
6f4b7663 RL |
326 | } |
327 | ||
328 | return 1; | |
329 | } | |
330 | ||
331 | static int rsa_setup_mgf1_md(PROV_RSA_CTX *ctx, const char *mdname, | |
2c6094ba | 332 | const char *mdprops) |
6f4b7663 | 333 | { |
2de64666 | 334 | size_t len; |
3f699197 | 335 | EVP_MD *md = NULL; |
bbde8566 | 336 | int mdnid; |
2de64666 | 337 | |
2c6094ba RL |
338 | if (mdprops == NULL) |
339 | mdprops = ctx->propq; | |
340 | ||
3f699197 | 341 | if ((md = EVP_MD_fetch(ctx->libctx, mdname, mdprops)) == NULL) { |
2d553660 RL |
342 | ERR_raise_data(ERR_LIB_PROV, PROV_R_INVALID_DIGEST, |
343 | "%s could not be fetched", mdname); | |
6f4b7663 | 344 | return 0; |
2d553660 | 345 | } |
49ed5ba8 | 346 | /* The default for mgf1 is SHA1 - so allow SHA1 */ |
6a2ab4a9 | 347 | if ((mdnid = ossl_digest_rsa_sign_get_md_nid(ctx->libctx, md, 1)) <= 0 |
bbde8566 | 348 | || !rsa_check_padding(ctx, NULL, mdname, mdnid)) { |
6a2ab4a9 | 349 | if (mdnid <= 0) |
bbde8566 TM |
350 | ERR_raise_data(ERR_LIB_PROV, PROV_R_DIGEST_NOT_ALLOWED, |
351 | "digest=%s", mdname); | |
3f699197 SL |
352 | EVP_MD_free(md); |
353 | return 0; | |
354 | } | |
2de64666 NT |
355 | len = OPENSSL_strlcpy(ctx->mgf1_mdname, mdname, sizeof(ctx->mgf1_mdname)); |
356 | if (len >= sizeof(ctx->mgf1_mdname)) { | |
357 | ERR_raise_data(ERR_LIB_PROV, PROV_R_INVALID_DIGEST, | |
358 | "%s exceeds name buffer length", mdname); | |
bbde8566 | 359 | EVP_MD_free(md); |
2de64666 NT |
360 | return 0; |
361 | } | |
6f4b7663 | 362 | |
bbde8566 TM |
363 | EVP_MD_free(ctx->mgf1_md); |
364 | ctx->mgf1_md = md; | |
365 | ctx->mgf1_mdnid = mdnid; | |
366 | ctx->mgf1_md_set = 1; | |
6f4b7663 RL |
367 | return 1; |
368 | } | |
369 | ||
556b8937 P |
370 | static int rsa_signverify_init(void *vprsactx, void *vrsa, |
371 | const OSSL_PARAM params[], int operation) | |
2d553660 RL |
372 | { |
373 | PROV_RSA_CTX *prsactx = (PROV_RSA_CTX *)vprsactx; | |
374 | ||
f590a5ea P |
375 | if (!ossl_prov_is_running()) |
376 | return 0; | |
377 | ||
0cfbc828 | 378 | if (prsactx == NULL || vrsa == NULL) |
2d553660 RL |
379 | return 0; |
380 | ||
6ce58488 | 381 | if (!ossl_rsa_check_key(prsactx->libctx, vrsa, operation)) |
0cfbc828 TM |
382 | return 0; |
383 | ||
384 | if (!RSA_up_ref(vrsa)) | |
385 | return 0; | |
2d553660 RL |
386 | RSA_free(prsactx->rsa); |
387 | prsactx->rsa = vrsa; | |
388 | prsactx->operation = operation; | |
389 | ||
556b8937 P |
390 | if (!rsa_set_ctx_params(prsactx, params)) |
391 | return 0; | |
392 | ||
2d553660 RL |
393 | /* Maximum for sign, auto for verify */ |
394 | prsactx->saltlen = RSA_PSS_SALTLEN_AUTO; | |
395 | prsactx->min_saltlen = -1; | |
396 | ||
397 | switch (RSA_test_flags(prsactx->rsa, RSA_FLAG_TYPE_MASK)) { | |
398 | case RSA_FLAG_TYPE_RSA: | |
399 | prsactx->pad_mode = RSA_PKCS1_PADDING; | |
400 | break; | |
401 | case RSA_FLAG_TYPE_RSASSAPSS: | |
402 | prsactx->pad_mode = RSA_PKCS1_PSS_PADDING; | |
403 | ||
404 | { | |
405 | const RSA_PSS_PARAMS_30 *pss = | |
23b2fc0b | 406 | ossl_rsa_get0_pss_params_30(prsactx->rsa); |
2d553660 | 407 | |
23b2fc0b P |
408 | if (!ossl_rsa_pss_params_30_is_unrestricted(pss)) { |
409 | int md_nid = ossl_rsa_pss_params_30_hashalg(pss); | |
410 | int mgf1md_nid = ossl_rsa_pss_params_30_maskgenhashalg(pss); | |
411 | int min_saltlen = ossl_rsa_pss_params_30_saltlen(pss); | |
2d553660 | 412 | const char *mdname, *mgf1mdname; |
2de64666 | 413 | size_t len; |
2d553660 | 414 | |
23b2fc0b P |
415 | mdname = ossl_rsa_oaeppss_nid2name(md_nid); |
416 | mgf1mdname = ossl_rsa_oaeppss_nid2name(mgf1md_nid); | |
2d553660 RL |
417 | |
418 | if (mdname == NULL) { | |
419 | ERR_raise_data(ERR_LIB_PROV, PROV_R_INVALID_DIGEST, | |
420 | "PSS restrictions lack hash algorithm"); | |
421 | return 0; | |
422 | } | |
423 | if (mgf1mdname == NULL) { | |
424 | ERR_raise_data(ERR_LIB_PROV, PROV_R_INVALID_DIGEST, | |
425 | "PSS restrictions lack MGF1 hash algorithm"); | |
426 | return 0; | |
427 | } | |
428 | ||
2de64666 NT |
429 | len = OPENSSL_strlcpy(prsactx->mdname, mdname, |
430 | sizeof(prsactx->mdname)); | |
431 | if (len >= sizeof(prsactx->mdname)) { | |
432 | ERR_raise_data(ERR_LIB_PROV, PROV_R_INVALID_DIGEST, | |
433 | "hash algorithm name too long"); | |
434 | return 0; | |
435 | } | |
436 | len = OPENSSL_strlcpy(prsactx->mgf1_mdname, mgf1mdname, | |
437 | sizeof(prsactx->mgf1_mdname)); | |
438 | if (len >= sizeof(prsactx->mgf1_mdname)) { | |
439 | ERR_raise_data(ERR_LIB_PROV, PROV_R_INVALID_DIGEST, | |
440 | "MGF1 hash algorithm name too long"); | |
441 | return 0; | |
442 | } | |
2d553660 RL |
443 | prsactx->saltlen = min_saltlen; |
444 | ||
bbde8566 TM |
445 | /* call rsa_setup_mgf1_md before rsa_setup_md to avoid duplication */ |
446 | return rsa_setup_mgf1_md(prsactx, mgf1mdname, prsactx->propq) | |
447 | && rsa_setup_md(prsactx, mdname, prsactx->propq) | |
448 | && rsa_check_parameters(prsactx, min_saltlen); | |
2d553660 RL |
449 | } |
450 | } | |
451 | ||
452 | break; | |
453 | default: | |
454 | ERR_raise(ERR_LIB_RSA, PROV_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); | |
455 | return 0; | |
456 | } | |
457 | ||
458 | return 1; | |
459 | } | |
460 | ||
6f4b7663 RL |
461 | static int setup_tbuf(PROV_RSA_CTX *ctx) |
462 | { | |
463 | if (ctx->tbuf != NULL) | |
464 | return 1; | |
465 | if ((ctx->tbuf = OPENSSL_malloc(RSA_size(ctx->rsa))) == NULL) { | |
466 | ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE); | |
467 | return 0; | |
468 | } | |
469 | return 1; | |
470 | } | |
471 | ||
472 | static void clean_tbuf(PROV_RSA_CTX *ctx) | |
473 | { | |
474 | if (ctx->tbuf != NULL) | |
475 | OPENSSL_cleanse(ctx->tbuf, RSA_size(ctx->rsa)); | |
476 | } | |
477 | ||
478 | static void free_tbuf(PROV_RSA_CTX *ctx) | |
479 | { | |
2d553660 RL |
480 | clean_tbuf(ctx); |
481 | OPENSSL_free(ctx->tbuf); | |
6f4b7663 RL |
482 | ctx->tbuf = NULL; |
483 | } | |
484 | ||
556b8937 | 485 | static int rsa_sign_init(void *vprsactx, void *vrsa, const OSSL_PARAM params[]) |
0ec36bf1 | 486 | { |
f590a5ea P |
487 | if (!ossl_prov_is_running()) |
488 | return 0; | |
556b8937 | 489 | return rsa_signverify_init(vprsactx, vrsa, params, EVP_PKEY_OP_SIGN); |
0ec36bf1 RL |
490 | } |
491 | ||
6f4b7663 RL |
492 | static int rsa_sign(void *vprsactx, unsigned char *sig, size_t *siglen, |
493 | size_t sigsize, const unsigned char *tbs, size_t tbslen) | |
494 | { | |
495 | PROV_RSA_CTX *prsactx = (PROV_RSA_CTX *)vprsactx; | |
496 | int ret; | |
497 | size_t rsasize = RSA_size(prsactx->rsa); | |
498 | size_t mdsize = rsa_get_md_size(prsactx); | |
499 | ||
f590a5ea P |
500 | if (!ossl_prov_is_running()) |
501 | return 0; | |
502 | ||
6f4b7663 RL |
503 | if (sig == NULL) { |
504 | *siglen = rsasize; | |
505 | return 1; | |
506 | } | |
507 | ||
2d553660 RL |
508 | if (sigsize < rsasize) { |
509 | ERR_raise_data(ERR_LIB_PROV, PROV_R_INVALID_SIGNATURE_SIZE, | |
510 | "is %zu, should be at least %zu", sigsize, rsasize); | |
6f4b7663 | 511 | return 0; |
2d553660 | 512 | } |
6f4b7663 RL |
513 | |
514 | if (mdsize != 0) { | |
515 | if (tbslen != mdsize) { | |
516 | ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_DIGEST_LENGTH); | |
517 | return 0; | |
518 | } | |
519 | ||
f844f9eb | 520 | #ifndef FIPS_MODULE |
6f4b7663 RL |
521 | if (EVP_MD_is_a(prsactx->md, OSSL_DIGEST_NAME_MDC2)) { |
522 | unsigned int sltmp; | |
523 | ||
524 | if (prsactx->pad_mode != RSA_PKCS1_PADDING) { | |
525 | ERR_raise_data(ERR_LIB_PROV, PROV_R_INVALID_PADDING_MODE, | |
526 | "only PKCS#1 padding supported with MDC2"); | |
527 | return 0; | |
528 | } | |
529 | ret = RSA_sign_ASN1_OCTET_STRING(0, tbs, tbslen, sig, &sltmp, | |
530 | prsactx->rsa); | |
531 | ||
532 | if (ret <= 0) { | |
c5689319 | 533 | ERR_raise(ERR_LIB_PROV, ERR_R_RSA_LIB); |
6f4b7663 RL |
534 | return 0; |
535 | } | |
536 | ret = sltmp; | |
537 | goto end; | |
538 | } | |
1b6ea308 | 539 | #endif |
6f4b7663 RL |
540 | switch (prsactx->pad_mode) { |
541 | case RSA_X931_PADDING: | |
542 | if ((size_t)RSA_size(prsactx->rsa) < tbslen + 1) { | |
2d553660 RL |
543 | ERR_raise_data(ERR_LIB_PROV, PROV_R_KEY_SIZE_TOO_SMALL, |
544 | "RSA key size = %d, expected minimum = %d", | |
545 | RSA_size(prsactx->rsa), tbslen + 1); | |
6f4b7663 RL |
546 | return 0; |
547 | } | |
548 | if (!setup_tbuf(prsactx)) { | |
549 | ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE); | |
550 | return 0; | |
551 | } | |
552 | memcpy(prsactx->tbuf, tbs, tbslen); | |
553 | prsactx->tbuf[tbslen] = RSA_X931_hash_id(prsactx->mdnid); | |
554 | ret = RSA_private_encrypt(tbslen + 1, prsactx->tbuf, | |
555 | sig, prsactx->rsa, RSA_X931_PADDING); | |
556 | clean_tbuf(prsactx); | |
557 | break; | |
558 | ||
559 | case RSA_PKCS1_PADDING: | |
560 | { | |
561 | unsigned int sltmp; | |
562 | ||
563 | ret = RSA_sign(prsactx->mdnid, tbs, tbslen, sig, &sltmp, | |
564 | prsactx->rsa); | |
565 | if (ret <= 0) { | |
c5689319 | 566 | ERR_raise(ERR_LIB_PROV, ERR_R_RSA_LIB); |
6f4b7663 RL |
567 | return 0; |
568 | } | |
569 | ret = sltmp; | |
570 | } | |
571 | break; | |
572 | ||
573 | case RSA_PKCS1_PSS_PADDING: | |
574 | /* Check PSS restrictions */ | |
575 | if (rsa_pss_restricted(prsactx)) { | |
576 | switch (prsactx->saltlen) { | |
577 | case RSA_PSS_SALTLEN_DIGEST: | |
578 | if (prsactx->min_saltlen > EVP_MD_size(prsactx->md)) { | |
2d553660 RL |
579 | ERR_raise_data(ERR_LIB_PROV, |
580 | PROV_R_PSS_SALTLEN_TOO_SMALL, | |
581 | "minimum salt length set to %d, " | |
582 | "but the digest only gives %d", | |
583 | prsactx->min_saltlen, | |
584 | EVP_MD_size(prsactx->md)); | |
6f4b7663 RL |
585 | return 0; |
586 | } | |
587 | /* FALLTHRU */ | |
588 | default: | |
589 | if (prsactx->saltlen >= 0 | |
590 | && prsactx->saltlen < prsactx->min_saltlen) { | |
2d553660 RL |
591 | ERR_raise_data(ERR_LIB_PROV, |
592 | PROV_R_PSS_SALTLEN_TOO_SMALL, | |
593 | "minimum salt length set to %d, but the" | |
594 | "actual salt length is only set to %d", | |
595 | prsactx->min_saltlen, | |
596 | prsactx->saltlen); | |
6f4b7663 RL |
597 | return 0; |
598 | } | |
599 | break; | |
600 | } | |
601 | } | |
602 | if (!setup_tbuf(prsactx)) | |
603 | return 0; | |
604 | if (!RSA_padding_add_PKCS1_PSS_mgf1(prsactx->rsa, | |
605 | prsactx->tbuf, tbs, | |
606 | prsactx->md, prsactx->mgf1_md, | |
607 | prsactx->saltlen)) { | |
c5689319 | 608 | ERR_raise(ERR_LIB_PROV, ERR_R_RSA_LIB); |
6f4b7663 RL |
609 | return 0; |
610 | } | |
611 | ret = RSA_private_encrypt(RSA_size(prsactx->rsa), prsactx->tbuf, | |
612 | sig, prsactx->rsa, RSA_NO_PADDING); | |
613 | clean_tbuf(prsactx); | |
614 | break; | |
615 | ||
616 | default: | |
617 | ERR_raise_data(ERR_LIB_PROV, PROV_R_INVALID_PADDING_MODE, | |
618 | "Only X.931, PKCS#1 v1.5 or PSS padding allowed"); | |
619 | return 0; | |
620 | } | |
621 | } else { | |
622 | ret = RSA_private_encrypt(tbslen, tbs, sig, prsactx->rsa, | |
623 | prsactx->pad_mode); | |
624 | } | |
625 | ||
f844f9eb | 626 | #ifndef FIPS_MODULE |
6f4b7663 RL |
627 | end: |
628 | #endif | |
629 | if (ret <= 0) { | |
c5689319 | 630 | ERR_raise(ERR_LIB_PROV, ERR_R_RSA_LIB); |
6f4b7663 RL |
631 | return 0; |
632 | } | |
633 | ||
634 | *siglen = ret; | |
635 | return 1; | |
636 | } | |
637 | ||
556b8937 P |
638 | static int rsa_verify_recover_init(void *vprsactx, void *vrsa, |
639 | const OSSL_PARAM params[]) | |
0ec36bf1 | 640 | { |
f590a5ea P |
641 | if (!ossl_prov_is_running()) |
642 | return 0; | |
556b8937 P |
643 | return rsa_signverify_init(vprsactx, vrsa, params, |
644 | EVP_PKEY_OP_VERIFYRECOVER); | |
0ec36bf1 RL |
645 | } |
646 | ||
6f4b7663 RL |
647 | static int rsa_verify_recover(void *vprsactx, |
648 | unsigned char *rout, | |
649 | size_t *routlen, | |
650 | size_t routsize, | |
651 | const unsigned char *sig, | |
652 | size_t siglen) | |
653 | { | |
654 | PROV_RSA_CTX *prsactx = (PROV_RSA_CTX *)vprsactx; | |
655 | int ret; | |
656 | ||
f590a5ea P |
657 | if (!ossl_prov_is_running()) |
658 | return 0; | |
659 | ||
6f4b7663 RL |
660 | if (rout == NULL) { |
661 | *routlen = RSA_size(prsactx->rsa); | |
662 | return 1; | |
663 | } | |
664 | ||
665 | if (prsactx->md != NULL) { | |
666 | switch (prsactx->pad_mode) { | |
667 | case RSA_X931_PADDING: | |
668 | if (!setup_tbuf(prsactx)) | |
669 | return 0; | |
670 | ret = RSA_public_decrypt(siglen, sig, prsactx->tbuf, prsactx->rsa, | |
671 | RSA_X931_PADDING); | |
672 | if (ret < 1) { | |
c5689319 | 673 | ERR_raise(ERR_LIB_PROV, ERR_R_RSA_LIB); |
6f4b7663 RL |
674 | return 0; |
675 | } | |
676 | ret--; | |
677 | if (prsactx->tbuf[ret] != RSA_X931_hash_id(prsactx->mdnid)) { | |
678 | ERR_raise(ERR_LIB_PROV, PROV_R_ALGORITHM_MISMATCH); | |
679 | return 0; | |
680 | } | |
681 | if (ret != EVP_MD_size(prsactx->md)) { | |
682 | ERR_raise_data(ERR_LIB_PROV, PROV_R_INVALID_DIGEST_LENGTH, | |
683 | "Should be %d, but got %d", | |
684 | EVP_MD_size(prsactx->md), ret); | |
685 | return 0; | |
686 | } | |
687 | ||
688 | *routlen = ret; | |
4f2271d5 SL |
689 | if (rout != prsactx->tbuf) { |
690 | if (routsize < (size_t)ret) { | |
691 | ERR_raise_data(ERR_LIB_PROV, PROV_R_OUTPUT_BUFFER_TOO_SMALL, | |
692 | "buffer size is %d, should be %d", | |
693 | routsize, ret); | |
694 | return 0; | |
695 | } | |
696 | memcpy(rout, prsactx->tbuf, ret); | |
6f4b7663 | 697 | } |
6f4b7663 RL |
698 | break; |
699 | ||
700 | case RSA_PKCS1_PADDING: | |
701 | { | |
702 | size_t sltmp; | |
703 | ||
4158b0dc SL |
704 | ret = ossl_rsa_verify(prsactx->mdnid, NULL, 0, rout, &sltmp, |
705 | sig, siglen, prsactx->rsa); | |
6f4b7663 | 706 | if (ret <= 0) { |
c5689319 | 707 | ERR_raise(ERR_LIB_PROV, ERR_R_RSA_LIB); |
6f4b7663 RL |
708 | return 0; |
709 | } | |
710 | ret = sltmp; | |
711 | } | |
712 | break; | |
713 | ||
714 | default: | |
715 | ERR_raise_data(ERR_LIB_PROV, PROV_R_INVALID_PADDING_MODE, | |
716 | "Only X.931 or PKCS#1 v1.5 padding allowed"); | |
717 | return 0; | |
718 | } | |
719 | } else { | |
720 | ret = RSA_public_decrypt(siglen, sig, rout, prsactx->rsa, | |
721 | prsactx->pad_mode); | |
722 | if (ret < 0) { | |
c5689319 | 723 | ERR_raise(ERR_LIB_PROV, ERR_R_RSA_LIB); |
6f4b7663 RL |
724 | return 0; |
725 | } | |
726 | } | |
727 | *routlen = ret; | |
728 | return 1; | |
729 | } | |
730 | ||
556b8937 P |
731 | static int rsa_verify_init(void *vprsactx, void *vrsa, |
732 | const OSSL_PARAM params[]) | |
0ec36bf1 | 733 | { |
f590a5ea P |
734 | if (!ossl_prov_is_running()) |
735 | return 0; | |
556b8937 | 736 | return rsa_signverify_init(vprsactx, vrsa, params, EVP_PKEY_OP_VERIFY); |
0ec36bf1 RL |
737 | } |
738 | ||
6f4b7663 RL |
739 | static int rsa_verify(void *vprsactx, const unsigned char *sig, size_t siglen, |
740 | const unsigned char *tbs, size_t tbslen) | |
741 | { | |
742 | PROV_RSA_CTX *prsactx = (PROV_RSA_CTX *)vprsactx; | |
743 | size_t rslen; | |
744 | ||
f590a5ea P |
745 | if (!ossl_prov_is_running()) |
746 | return 0; | |
6f4b7663 RL |
747 | if (prsactx->md != NULL) { |
748 | switch (prsactx->pad_mode) { | |
749 | case RSA_PKCS1_PADDING: | |
750 | if (!RSA_verify(prsactx->mdnid, tbs, tbslen, sig, siglen, | |
751 | prsactx->rsa)) { | |
c5689319 | 752 | ERR_raise(ERR_LIB_PROV, ERR_R_RSA_LIB); |
6f4b7663 RL |
753 | return 0; |
754 | } | |
755 | return 1; | |
756 | case RSA_X931_PADDING: | |
4f2271d5 SL |
757 | if (!setup_tbuf(prsactx)) |
758 | return 0; | |
759 | if (rsa_verify_recover(prsactx, prsactx->tbuf, &rslen, 0, | |
760 | sig, siglen) <= 0) | |
6f4b7663 RL |
761 | return 0; |
762 | break; | |
763 | case RSA_PKCS1_PSS_PADDING: | |
764 | { | |
765 | int ret; | |
766 | size_t mdsize; | |
767 | ||
6f4b7663 RL |
768 | /* |
769 | * We need to check this for the RSA_verify_PKCS1_PSS_mgf1() | |
770 | * call | |
771 | */ | |
772 | mdsize = rsa_get_md_size(prsactx); | |
773 | if (tbslen != mdsize) { | |
774 | ERR_raise_data(ERR_LIB_PROV, PROV_R_INVALID_DIGEST_LENGTH, | |
775 | "Should be %d, but got %d", | |
776 | mdsize, tbslen); | |
777 | return 0; | |
778 | } | |
779 | ||
780 | if (!setup_tbuf(prsactx)) | |
781 | return 0; | |
782 | ret = RSA_public_decrypt(siglen, sig, prsactx->tbuf, | |
783 | prsactx->rsa, RSA_NO_PADDING); | |
784 | if (ret <= 0) { | |
c5689319 | 785 | ERR_raise(ERR_LIB_PROV, ERR_R_RSA_LIB); |
6f4b7663 RL |
786 | return 0; |
787 | } | |
788 | ret = RSA_verify_PKCS1_PSS_mgf1(prsactx->rsa, tbs, | |
789 | prsactx->md, prsactx->mgf1_md, | |
790 | prsactx->tbuf, | |
791 | prsactx->saltlen); | |
792 | if (ret <= 0) { | |
c5689319 | 793 | ERR_raise(ERR_LIB_PROV, ERR_R_RSA_LIB); |
6f4b7663 RL |
794 | return 0; |
795 | } | |
796 | return 1; | |
797 | } | |
798 | default: | |
799 | ERR_raise_data(ERR_LIB_PROV, PROV_R_INVALID_PADDING_MODE, | |
800 | "Only X.931, PKCS#1 v1.5 or PSS padding allowed"); | |
801 | return 0; | |
802 | } | |
803 | } else { | |
804 | if (!setup_tbuf(prsactx)) | |
805 | return 0; | |
806 | rslen = RSA_public_decrypt(siglen, sig, prsactx->tbuf, prsactx->rsa, | |
807 | prsactx->pad_mode); | |
808 | if (rslen == 0) { | |
c5689319 | 809 | ERR_raise(ERR_LIB_PROV, ERR_R_RSA_LIB); |
6f4b7663 RL |
810 | return 0; |
811 | } | |
812 | } | |
813 | ||
814 | if ((rslen != tbslen) || memcmp(tbs, prsactx->tbuf, rslen)) | |
815 | return 0; | |
816 | ||
817 | return 1; | |
818 | } | |
819 | ||
820 | static int rsa_digest_signverify_init(void *vprsactx, const char *mdname, | |
556b8937 P |
821 | void *vrsa, const OSSL_PARAM params[], |
822 | int operation) | |
6f4b7663 RL |
823 | { |
824 | PROV_RSA_CTX *prsactx = (PROV_RSA_CTX *)vprsactx; | |
825 | ||
f590a5ea P |
826 | if (!ossl_prov_is_running()) |
827 | return 0; | |
828 | ||
db1319b7 SL |
829 | if (prsactx != NULL) |
830 | prsactx->flag_allow_md = 0; | |
556b8937 | 831 | if (!rsa_signverify_init(vprsactx, vrsa, params, operation)) |
bbde8566 TM |
832 | return 0; |
833 | if (mdname != NULL | |
834 | /* was rsa_setup_md already called in rsa_signverify_init()? */ | |
835 | && (mdname[0] == '\0' || strcasecmp(prsactx->mdname, mdname) != 0) | |
836 | && !rsa_setup_md(prsactx, mdname, prsactx->propq)) | |
6f4b7663 RL |
837 | return 0; |
838 | ||
839 | prsactx->mdctx = EVP_MD_CTX_new(); | |
2d553660 RL |
840 | if (prsactx->mdctx == NULL) { |
841 | ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE); | |
6f4b7663 | 842 | goto error; |
2d553660 | 843 | } |
6f4b7663 | 844 | |
556b8937 | 845 | if (!EVP_DigestInit_ex2(prsactx->mdctx, prsactx->md, params)) |
6f4b7663 RL |
846 | goto error; |
847 | ||
848 | return 1; | |
849 | ||
850 | error: | |
851 | EVP_MD_CTX_free(prsactx->mdctx); | |
852 | EVP_MD_free(prsactx->md); | |
853 | prsactx->mdctx = NULL; | |
854 | prsactx->md = NULL; | |
855 | return 0; | |
856 | } | |
857 | ||
0ec36bf1 RL |
858 | static int rsa_digest_signverify_update(void *vprsactx, |
859 | const unsigned char *data, | |
860 | size_t datalen) | |
6f4b7663 RL |
861 | { |
862 | PROV_RSA_CTX *prsactx = (PROV_RSA_CTX *)vprsactx; | |
863 | ||
864 | if (prsactx == NULL || prsactx->mdctx == NULL) | |
865 | return 0; | |
866 | ||
867 | return EVP_DigestUpdate(prsactx->mdctx, data, datalen); | |
868 | } | |
869 | ||
0ec36bf1 | 870 | static int rsa_digest_sign_init(void *vprsactx, const char *mdname, |
556b8937 | 871 | void *vrsa, const OSSL_PARAM params[]) |
0ec36bf1 | 872 | { |
f590a5ea P |
873 | if (!ossl_prov_is_running()) |
874 | return 0; | |
2d553660 | 875 | return rsa_digest_signverify_init(vprsactx, mdname, vrsa, |
556b8937 | 876 | params, EVP_PKEY_OP_SIGN); |
0ec36bf1 RL |
877 | } |
878 | ||
879 | static int rsa_digest_sign_final(void *vprsactx, unsigned char *sig, | |
880 | size_t *siglen, size_t sigsize) | |
6f4b7663 RL |
881 | { |
882 | PROV_RSA_CTX *prsactx = (PROV_RSA_CTX *)vprsactx; | |
883 | unsigned char digest[EVP_MAX_MD_SIZE]; | |
884 | unsigned int dlen = 0; | |
885 | ||
f590a5ea | 886 | if (!ossl_prov_is_running() || prsactx == NULL) |
51bba73e | 887 | return 0; |
6f4b7663 | 888 | prsactx->flag_allow_md = 1; |
51bba73e | 889 | if (prsactx->mdctx == NULL) |
6f4b7663 | 890 | return 0; |
6f4b7663 RL |
891 | /* |
892 | * If sig is NULL then we're just finding out the sig size. Other fields | |
893 | * are ignored. Defer to rsa_sign. | |
894 | */ | |
895 | if (sig != NULL) { | |
896 | /* | |
3f699197 SL |
897 | * The digests used here are all known (see rsa_get_md_nid()), so they |
898 | * should not exceed the internal buffer size of EVP_MAX_MD_SIZE. | |
6f4b7663 RL |
899 | */ |
900 | if (!EVP_DigestFinal_ex(prsactx->mdctx, digest, &dlen)) | |
901 | return 0; | |
902 | } | |
903 | ||
904 | return rsa_sign(vprsactx, sig, siglen, sigsize, digest, (size_t)dlen); | |
905 | } | |
906 | ||
0ec36bf1 | 907 | static int rsa_digest_verify_init(void *vprsactx, const char *mdname, |
556b8937 | 908 | void *vrsa, const OSSL_PARAM params[]) |
0ec36bf1 | 909 | { |
f590a5ea P |
910 | if (!ossl_prov_is_running()) |
911 | return 0; | |
2d553660 | 912 | return rsa_digest_signverify_init(vprsactx, mdname, vrsa, |
556b8937 | 913 | params, EVP_PKEY_OP_VERIFY); |
0ec36bf1 | 914 | } |
6f4b7663 RL |
915 | |
916 | int rsa_digest_verify_final(void *vprsactx, const unsigned char *sig, | |
917 | size_t siglen) | |
918 | { | |
919 | PROV_RSA_CTX *prsactx = (PROV_RSA_CTX *)vprsactx; | |
920 | unsigned char digest[EVP_MAX_MD_SIZE]; | |
921 | unsigned int dlen = 0; | |
922 | ||
f590a5ea P |
923 | if (!ossl_prov_is_running()) |
924 | return 0; | |
925 | ||
db1319b7 SL |
926 | if (prsactx == NULL) |
927 | return 0; | |
6f4b7663 | 928 | prsactx->flag_allow_md = 1; |
db1319b7 | 929 | if (prsactx->mdctx == NULL) |
6f4b7663 RL |
930 | return 0; |
931 | ||
932 | /* | |
3f699197 SL |
933 | * The digests used here are all known (see rsa_get_md_nid()), so they |
934 | * should not exceed the internal buffer size of EVP_MAX_MD_SIZE. | |
6f4b7663 RL |
935 | */ |
936 | if (!EVP_DigestFinal_ex(prsactx->mdctx, digest, &dlen)) | |
937 | return 0; | |
938 | ||
939 | return rsa_verify(vprsactx, sig, siglen, digest, (size_t)dlen); | |
940 | } | |
941 | ||
942 | static void rsa_freectx(void *vprsactx) | |
943 | { | |
944 | PROV_RSA_CTX *prsactx = (PROV_RSA_CTX *)vprsactx; | |
945 | ||
946 | if (prsactx == NULL) | |
947 | return; | |
948 | ||
6f4b7663 RL |
949 | EVP_MD_CTX_free(prsactx->mdctx); |
950 | EVP_MD_free(prsactx->md); | |
951 | EVP_MD_free(prsactx->mgf1_md); | |
2c6094ba | 952 | OPENSSL_free(prsactx->propq); |
6f4b7663 | 953 | free_tbuf(prsactx); |
fdf6118b | 954 | RSA_free(prsactx->rsa); |
6f4b7663 | 955 | |
26c5ea8f | 956 | OPENSSL_clear_free(prsactx, sizeof(*prsactx)); |
6f4b7663 RL |
957 | } |
958 | ||
959 | static void *rsa_dupctx(void *vprsactx) | |
960 | { | |
961 | PROV_RSA_CTX *srcctx = (PROV_RSA_CTX *)vprsactx; | |
962 | PROV_RSA_CTX *dstctx; | |
963 | ||
f590a5ea P |
964 | if (!ossl_prov_is_running()) |
965 | return NULL; | |
966 | ||
6f4b7663 | 967 | dstctx = OPENSSL_zalloc(sizeof(*srcctx)); |
2d553660 RL |
968 | if (dstctx == NULL) { |
969 | ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE); | |
6f4b7663 | 970 | return NULL; |
2d553660 | 971 | } |
6f4b7663 RL |
972 | |
973 | *dstctx = *srcctx; | |
974 | dstctx->rsa = NULL; | |
975 | dstctx->md = NULL; | |
976 | dstctx->mdctx = NULL; | |
977 | dstctx->tbuf = NULL; | |
c2386b81 | 978 | dstctx->propq = NULL; |
6f4b7663 RL |
979 | |
980 | if (srcctx->rsa != NULL && !RSA_up_ref(srcctx->rsa)) | |
981 | goto err; | |
982 | dstctx->rsa = srcctx->rsa; | |
983 | ||
984 | if (srcctx->md != NULL && !EVP_MD_up_ref(srcctx->md)) | |
985 | goto err; | |
986 | dstctx->md = srcctx->md; | |
987 | ||
988 | if (srcctx->mgf1_md != NULL && !EVP_MD_up_ref(srcctx->mgf1_md)) | |
989 | goto err; | |
990 | dstctx->mgf1_md = srcctx->mgf1_md; | |
991 | ||
992 | if (srcctx->mdctx != NULL) { | |
993 | dstctx->mdctx = EVP_MD_CTX_new(); | |
994 | if (dstctx->mdctx == NULL | |
995 | || !EVP_MD_CTX_copy_ex(dstctx->mdctx, srcctx->mdctx)) | |
996 | goto err; | |
997 | } | |
998 | ||
c2386b81 SL |
999 | if (srcctx->propq != NULL) { |
1000 | dstctx->propq = OPENSSL_strdup(srcctx->propq); | |
1001 | if (dstctx->propq == NULL) | |
1002 | goto err; | |
1003 | } | |
1004 | ||
6f4b7663 RL |
1005 | return dstctx; |
1006 | err: | |
1007 | rsa_freectx(dstctx); | |
1008 | return NULL; | |
1009 | } | |
1010 | ||
1011 | static int rsa_get_ctx_params(void *vprsactx, OSSL_PARAM *params) | |
1012 | { | |
1013 | PROV_RSA_CTX *prsactx = (PROV_RSA_CTX *)vprsactx; | |
1014 | OSSL_PARAM *p; | |
1015 | ||
556b8937 | 1016 | if (prsactx == NULL) |
6f4b7663 RL |
1017 | return 0; |
1018 | ||
1019 | p = OSSL_PARAM_locate(params, OSSL_SIGNATURE_PARAM_ALGORITHM_ID); | |
bbde8566 TM |
1020 | if (p != NULL) { |
1021 | /* The Algorithm Identifier of the combined signature algorithm */ | |
1022 | unsigned char aid_buf[128]; | |
1023 | unsigned char *aid; | |
1024 | size_t aid_len; | |
1025 | ||
1026 | aid = rsa_generate_signature_aid(prsactx, aid_buf, | |
1027 | sizeof(aid_buf), &aid_len); | |
1028 | if (aid == NULL || !OSSL_PARAM_set_octet_string(p, aid, aid_len)) | |
1029 | return 0; | |
1030 | } | |
6f4b7663 RL |
1031 | |
1032 | p = OSSL_PARAM_locate(params, OSSL_SIGNATURE_PARAM_PAD_MODE); | |
1033 | if (p != NULL) | |
1034 | switch (p->data_type) { | |
1035 | case OSSL_PARAM_INTEGER: | |
1036 | if (!OSSL_PARAM_set_int(p, prsactx->pad_mode)) | |
1037 | return 0; | |
1038 | break; | |
1039 | case OSSL_PARAM_UTF8_STRING: | |
1040 | { | |
1041 | int i; | |
1042 | const char *word = NULL; | |
1043 | ||
1044 | for (i = 0; padding_item[i].id != 0; i++) { | |
1045 | if (prsactx->pad_mode == (int)padding_item[i].id) { | |
1046 | word = padding_item[i].ptr; | |
1047 | break; | |
1048 | } | |
1049 | } | |
1050 | ||
1051 | if (word != NULL) { | |
1052 | if (!OSSL_PARAM_set_utf8_string(p, word)) | |
1053 | return 0; | |
1054 | } else { | |
1055 | ERR_raise(ERR_LIB_PROV, ERR_R_INTERNAL_ERROR); | |
1056 | } | |
1057 | } | |
1058 | break; | |
1059 | default: | |
1060 | return 0; | |
1061 | } | |
1062 | ||
1063 | p = OSSL_PARAM_locate(params, OSSL_SIGNATURE_PARAM_DIGEST); | |
1064 | if (p != NULL && !OSSL_PARAM_set_utf8_string(p, prsactx->mdname)) | |
1065 | return 0; | |
1066 | ||
1067 | p = OSSL_PARAM_locate(params, OSSL_SIGNATURE_PARAM_MGF1_DIGEST); | |
1068 | if (p != NULL && !OSSL_PARAM_set_utf8_string(p, prsactx->mgf1_mdname)) | |
1069 | return 0; | |
1070 | ||
1071 | p = OSSL_PARAM_locate(params, OSSL_SIGNATURE_PARAM_PSS_SALTLEN); | |
1072 | if (p != NULL) { | |
1073 | if (p->data_type == OSSL_PARAM_INTEGER) { | |
1074 | if (!OSSL_PARAM_set_int(p, prsactx->saltlen)) | |
1075 | return 0; | |
1076 | } else if (p->data_type == OSSL_PARAM_UTF8_STRING) { | |
b8086652 SL |
1077 | const char *value = NULL; |
1078 | ||
6f4b7663 RL |
1079 | switch (prsactx->saltlen) { |
1080 | case RSA_PSS_SALTLEN_DIGEST: | |
b8086652 | 1081 | value = OSSL_PKEY_RSA_PSS_SALT_LEN_DIGEST; |
6f4b7663 RL |
1082 | break; |
1083 | case RSA_PSS_SALTLEN_MAX: | |
b8086652 | 1084 | value = OSSL_PKEY_RSA_PSS_SALT_LEN_MAX; |
6f4b7663 RL |
1085 | break; |
1086 | case RSA_PSS_SALTLEN_AUTO: | |
b8086652 | 1087 | value = OSSL_PKEY_RSA_PSS_SALT_LEN_AUTO; |
6f4b7663 RL |
1088 | break; |
1089 | default: | |
b8086652 SL |
1090 | { |
1091 | int len = BIO_snprintf(p->data, p->data_size, "%d", | |
1092 | prsactx->saltlen); | |
1093 | ||
1094 | if (len <= 0) | |
1095 | return 0; | |
1096 | p->return_size = len; | |
1097 | break; | |
1098 | } | |
6f4b7663 | 1099 | } |
b8086652 SL |
1100 | if (value != NULL |
1101 | && !OSSL_PARAM_set_utf8_string(p, value)) | |
1102 | return 0; | |
6f4b7663 RL |
1103 | } |
1104 | } | |
1105 | ||
1106 | return 1; | |
1107 | } | |
1108 | ||
1109 | static const OSSL_PARAM known_gettable_ctx_params[] = { | |
1110 | OSSL_PARAM_octet_string(OSSL_SIGNATURE_PARAM_ALGORITHM_ID, NULL, 0), | |
1111 | OSSL_PARAM_utf8_string(OSSL_SIGNATURE_PARAM_PAD_MODE, NULL, 0), | |
1112 | OSSL_PARAM_utf8_string(OSSL_SIGNATURE_PARAM_DIGEST, NULL, 0), | |
1113 | OSSL_PARAM_utf8_string(OSSL_SIGNATURE_PARAM_MGF1_DIGEST, NULL, 0), | |
1114 | OSSL_PARAM_utf8_string(OSSL_SIGNATURE_PARAM_PSS_SALTLEN, NULL, 0), | |
1115 | OSSL_PARAM_END | |
1116 | }; | |
1117 | ||
fb67126e TM |
1118 | static const OSSL_PARAM *rsa_gettable_ctx_params(ossl_unused void *vprsactx, |
1119 | ossl_unused void *provctx) | |
6f4b7663 RL |
1120 | { |
1121 | return known_gettable_ctx_params; | |
1122 | } | |
1123 | ||
1124 | static int rsa_set_ctx_params(void *vprsactx, const OSSL_PARAM params[]) | |
1125 | { | |
1126 | PROV_RSA_CTX *prsactx = (PROV_RSA_CTX *)vprsactx; | |
1127 | const OSSL_PARAM *p; | |
93e43f4c BK |
1128 | int pad_mode; |
1129 | int saltlen; | |
bbde8566 TM |
1130 | char mdname[OSSL_MAX_NAME_SIZE] = "", *pmdname = NULL; |
1131 | char mdprops[OSSL_MAX_PROPQUERY_SIZE] = "", *pmdprops = NULL; | |
1132 | char mgf1mdname[OSSL_MAX_NAME_SIZE] = "", *pmgf1mdname = NULL; | |
1133 | char mgf1mdprops[OSSL_MAX_PROPQUERY_SIZE] = "", *pmgf1mdprops = NULL; | |
6f4b7663 | 1134 | |
556b8937 | 1135 | if (prsactx == NULL) |
6f4b7663 | 1136 | return 0; |
556b8937 P |
1137 | if (params == NULL) |
1138 | return 1; | |
1139 | ||
93e43f4c BK |
1140 | pad_mode = prsactx->pad_mode; |
1141 | saltlen = prsactx->saltlen; | |
6f4b7663 RL |
1142 | |
1143 | p = OSSL_PARAM_locate_const(params, OSSL_SIGNATURE_PARAM_DIGEST); | |
1144 | /* Not allowed during certain operations */ | |
1145 | if (p != NULL && !prsactx->flag_allow_md) | |
1146 | return 0; | |
1147 | if (p != NULL) { | |
6f4b7663 RL |
1148 | const OSSL_PARAM *propsp = |
1149 | OSSL_PARAM_locate_const(params, | |
1150 | OSSL_SIGNATURE_PARAM_PROPERTIES); | |
1151 | ||
bbde8566 | 1152 | pmdname = mdname; |
6f4b7663 RL |
1153 | if (!OSSL_PARAM_get_utf8_string(p, &pmdname, sizeof(mdname))) |
1154 | return 0; | |
2c6094ba | 1155 | |
bbde8566 TM |
1156 | if (propsp != NULL) { |
1157 | pmdprops = mdprops; | |
1158 | if (!OSSL_PARAM_get_utf8_string(propsp, | |
1159 | &pmdprops, sizeof(mdprops))) | |
1160 | return 0; | |
6f4b7663 | 1161 | } |
6f4b7663 RL |
1162 | } |
1163 | ||
1164 | p = OSSL_PARAM_locate_const(params, OSSL_SIGNATURE_PARAM_PAD_MODE); | |
1165 | if (p != NULL) { | |
0ec36bf1 | 1166 | const char *err_extra_text = NULL; |
6f4b7663 RL |
1167 | |
1168 | switch (p->data_type) { | |
1169 | case OSSL_PARAM_INTEGER: /* Support for legacy pad mode number */ | |
1170 | if (!OSSL_PARAM_get_int(p, &pad_mode)) | |
1171 | return 0; | |
1172 | break; | |
1173 | case OSSL_PARAM_UTF8_STRING: | |
1174 | { | |
1175 | int i; | |
1176 | ||
1177 | if (p->data == NULL) | |
1178 | return 0; | |
1179 | ||
1180 | for (i = 0; padding_item[i].id != 0; i++) { | |
1181 | if (strcmp(p->data, padding_item[i].ptr) == 0) { | |
1182 | pad_mode = padding_item[i].id; | |
1183 | break; | |
1184 | } | |
1185 | } | |
1186 | } | |
1187 | break; | |
1188 | default: | |
1189 | return 0; | |
1190 | } | |
1191 | ||
1192 | switch (pad_mode) { | |
1193 | case RSA_PKCS1_OAEP_PADDING: | |
1194 | /* | |
1195 | * OAEP padding is for asymmetric cipher only so is not compatible | |
1196 | * with signature use. | |
1197 | */ | |
0ec36bf1 RL |
1198 | err_extra_text = "OAEP padding not allowed for signing / verifying"; |
1199 | goto bad_pad; | |
6f4b7663 | 1200 | case RSA_PKCS1_PSS_PADDING: |
0ec36bf1 RL |
1201 | if ((prsactx->operation |
1202 | & (EVP_PKEY_OP_SIGN | EVP_PKEY_OP_VERIFY)) == 0) { | |
1203 | err_extra_text = | |
1204 | "PSS padding only allowed for sign and verify operations"; | |
1205 | goto bad_pad; | |
1206 | } | |
0ec36bf1 | 1207 | break; |
6f4b7663 | 1208 | case RSA_PKCS1_PADDING: |
0ec36bf1 RL |
1209 | err_extra_text = "PKCS#1 padding not allowed with RSA-PSS"; |
1210 | goto cont; | |
6f4b7663 | 1211 | case RSA_NO_PADDING: |
0ec36bf1 RL |
1212 | err_extra_text = "No padding not allowed with RSA-PSS"; |
1213 | goto cont; | |
6f4b7663 | 1214 | case RSA_X931_PADDING: |
0ec36bf1 | 1215 | err_extra_text = "X.931 padding not allowed with RSA-PSS"; |
6f4b7663 | 1216 | cont: |
2d553660 RL |
1217 | if (RSA_test_flags(prsactx->rsa, |
1218 | RSA_FLAG_TYPE_MASK) == RSA_FLAG_TYPE_RSA) | |
0ec36bf1 RL |
1219 | break; |
1220 | /* FALLTHRU */ | |
6f4b7663 | 1221 | default: |
0ec36bf1 RL |
1222 | bad_pad: |
1223 | if (err_extra_text == NULL) | |
1224 | ERR_raise(ERR_LIB_PROV, | |
1225 | PROV_R_ILLEGAL_OR_UNSUPPORTED_PADDING_MODE); | |
1226 | else | |
1227 | ERR_raise_data(ERR_LIB_PROV, | |
1228 | PROV_R_ILLEGAL_OR_UNSUPPORTED_PADDING_MODE, | |
1229 | err_extra_text); | |
6f4b7663 RL |
1230 | return 0; |
1231 | } | |
6f4b7663 RL |
1232 | } |
1233 | ||
1234 | p = OSSL_PARAM_locate_const(params, OSSL_SIGNATURE_PARAM_PSS_SALTLEN); | |
1235 | if (p != NULL) { | |
bbde8566 | 1236 | if (pad_mode != RSA_PKCS1_PSS_PADDING) { |
6f4b7663 RL |
1237 | ERR_raise_data(ERR_LIB_PROV, PROV_R_NOT_SUPPORTED, |
1238 | "PSS saltlen can only be specified if " | |
1239 | "PSS padding has been specified first"); | |
1240 | return 0; | |
1241 | } | |
1242 | ||
1243 | switch (p->data_type) { | |
1244 | case OSSL_PARAM_INTEGER: /* Support for legacy pad mode number */ | |
1245 | if (!OSSL_PARAM_get_int(p, &saltlen)) | |
1246 | return 0; | |
1247 | break; | |
1248 | case OSSL_PARAM_UTF8_STRING: | |
b8086652 | 1249 | if (strcmp(p->data, OSSL_PKEY_RSA_PSS_SALT_LEN_DIGEST) == 0) |
6f4b7663 | 1250 | saltlen = RSA_PSS_SALTLEN_DIGEST; |
b8086652 | 1251 | else if (strcmp(p->data, OSSL_PKEY_RSA_PSS_SALT_LEN_MAX) == 0) |
6f4b7663 | 1252 | saltlen = RSA_PSS_SALTLEN_MAX; |
b8086652 | 1253 | else if (strcmp(p->data, OSSL_PKEY_RSA_PSS_SALT_LEN_AUTO) == 0) |
6f4b7663 RL |
1254 | saltlen = RSA_PSS_SALTLEN_AUTO; |
1255 | else | |
1256 | saltlen = atoi(p->data); | |
1257 | break; | |
1258 | default: | |
1259 | return 0; | |
1260 | } | |
1261 | ||
1262 | /* | |
1263 | * RSA_PSS_SALTLEN_MAX seems curiously named in this check. | |
1264 | * Contrary to what it's name suggests, it's the currently | |
1265 | * lowest saltlen number possible. | |
1266 | */ | |
1267 | if (saltlen < RSA_PSS_SALTLEN_MAX) { | |
f5f29796 | 1268 | ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_SALT_LENGTH); |
6f4b7663 RL |
1269 | return 0; |
1270 | } | |
1271 | ||
0ec36bf1 | 1272 | if (rsa_pss_restricted(prsactx)) { |
6ce6ad39 | 1273 | switch (saltlen) { |
0ec36bf1 RL |
1274 | case RSA_PSS_SALTLEN_AUTO: |
1275 | if (prsactx->operation == EVP_PKEY_OP_VERIFY) { | |
f5f29796 TM |
1276 | ERR_raise_data(ERR_LIB_PROV, PROV_R_INVALID_SALT_LENGTH, |
1277 | "Cannot use autodetected salt length"); | |
0ec36bf1 RL |
1278 | return 0; |
1279 | } | |
1280 | break; | |
1281 | case RSA_PSS_SALTLEN_DIGEST: | |
1282 | if (prsactx->min_saltlen > EVP_MD_size(prsactx->md)) { | |
1283 | ERR_raise_data(ERR_LIB_PROV, | |
1284 | PROV_R_PSS_SALTLEN_TOO_SMALL, | |
1285 | "Should be more than %d, but would be " | |
1286 | "set to match digest size (%d)", | |
1287 | prsactx->min_saltlen, | |
1288 | EVP_MD_size(prsactx->md)); | |
1289 | return 0; | |
1290 | } | |
6ce6ad39 | 1291 | break; |
0ec36bf1 RL |
1292 | default: |
1293 | if (saltlen >= 0 && saltlen < prsactx->min_saltlen) { | |
1294 | ERR_raise_data(ERR_LIB_PROV, | |
1295 | PROV_R_PSS_SALTLEN_TOO_SMALL, | |
1296 | "Should be more than %d, " | |
1297 | "but would be set to %d", | |
1298 | prsactx->min_saltlen, saltlen); | |
1299 | return 0; | |
1300 | } | |
1301 | } | |
1302 | } | |
6f4b7663 RL |
1303 | } |
1304 | ||
1305 | p = OSSL_PARAM_locate_const(params, OSSL_SIGNATURE_PARAM_MGF1_DIGEST); | |
1306 | if (p != NULL) { | |
6f4b7663 RL |
1307 | const OSSL_PARAM *propsp = |
1308 | OSSL_PARAM_locate_const(params, | |
1309 | OSSL_SIGNATURE_PARAM_MGF1_PROPERTIES); | |
1310 | ||
bbde8566 TM |
1311 | pmgf1mdname = mgf1mdname; |
1312 | if (!OSSL_PARAM_get_utf8_string(p, &pmgf1mdname, sizeof(mgf1mdname))) | |
6f4b7663 | 1313 | return 0; |
2c6094ba | 1314 | |
bbde8566 TM |
1315 | if (propsp != NULL) { |
1316 | pmgf1mdprops = mgf1mdprops; | |
1317 | if (!OSSL_PARAM_get_utf8_string(propsp, | |
1318 | &pmgf1mdprops, sizeof(mgf1mdprops))) | |
1319 | return 0; | |
1320 | } | |
6f4b7663 | 1321 | |
bbde8566 | 1322 | if (pad_mode != RSA_PKCS1_PSS_PADDING) { |
6f4b7663 RL |
1323 | ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_MGF1_MD); |
1324 | return 0; | |
1325 | } | |
bbde8566 | 1326 | } |
6f4b7663 | 1327 | |
bbde8566 TM |
1328 | prsactx->saltlen = saltlen; |
1329 | prsactx->pad_mode = pad_mode; | |
1330 | ||
1331 | if (prsactx->md == NULL && pmdname == NULL | |
1332 | && pad_mode == RSA_PKCS1_PSS_PADDING) | |
1333 | pmdname = RSA_DEFAULT_DIGEST_NAME; | |
6f4b7663 | 1334 | |
bbde8566 TM |
1335 | if (pmgf1mdname != NULL |
1336 | && !rsa_setup_mgf1_md(prsactx, pmgf1mdname, pmgf1mdprops)) | |
1337 | return 0; | |
1338 | ||
1339 | if (pmdname != NULL) { | |
1340 | if (!rsa_setup_md(prsactx, pmdname, pmdprops)) | |
1341 | return 0; | |
1342 | } else { | |
1343 | if (!rsa_check_padding(prsactx, NULL, NULL, prsactx->mdnid)) | |
6f4b7663 RL |
1344 | return 0; |
1345 | } | |
6f4b7663 RL |
1346 | return 1; |
1347 | } | |
1348 | ||
fb67126e | 1349 | static const OSSL_PARAM settable_ctx_params[] = { |
6f4b7663 RL |
1350 | OSSL_PARAM_utf8_string(OSSL_SIGNATURE_PARAM_DIGEST, NULL, 0), |
1351 | OSSL_PARAM_utf8_string(OSSL_SIGNATURE_PARAM_PROPERTIES, NULL, 0), | |
fb67126e | 1352 | OSSL_PARAM_utf8_string(OSSL_SIGNATURE_PARAM_PAD_MODE, NULL, 0), |
6f4b7663 RL |
1353 | OSSL_PARAM_utf8_string(OSSL_SIGNATURE_PARAM_MGF1_DIGEST, NULL, 0), |
1354 | OSSL_PARAM_utf8_string(OSSL_SIGNATURE_PARAM_MGF1_PROPERTIES, NULL, 0), | |
1355 | OSSL_PARAM_utf8_string(OSSL_SIGNATURE_PARAM_PSS_SALTLEN, NULL, 0), | |
1356 | OSSL_PARAM_END | |
1357 | }; | |
1358 | ||
fb67126e TM |
1359 | static const OSSL_PARAM settable_ctx_params_no_digest[] = { |
1360 | OSSL_PARAM_utf8_string(OSSL_SIGNATURE_PARAM_PAD_MODE, NULL, 0), | |
1361 | OSSL_PARAM_utf8_string(OSSL_SIGNATURE_PARAM_MGF1_DIGEST, NULL, 0), | |
1362 | OSSL_PARAM_utf8_string(OSSL_SIGNATURE_PARAM_MGF1_PROPERTIES, NULL, 0), | |
1363 | OSSL_PARAM_utf8_string(OSSL_SIGNATURE_PARAM_PSS_SALTLEN, NULL, 0), | |
1364 | OSSL_PARAM_END | |
1365 | }; | |
1366 | ||
1367 | static const OSSL_PARAM *rsa_settable_ctx_params(void *vprsactx, | |
1368 | ossl_unused void *provctx) | |
6f4b7663 | 1369 | { |
fb67126e TM |
1370 | PROV_RSA_CTX *prsactx = (PROV_RSA_CTX *)vprsactx; |
1371 | ||
1372 | if (prsactx != NULL && !prsactx->flag_allow_md) | |
1373 | return settable_ctx_params_no_digest; | |
1374 | return settable_ctx_params; | |
6f4b7663 RL |
1375 | } |
1376 | ||
1377 | static int rsa_get_ctx_md_params(void *vprsactx, OSSL_PARAM *params) | |
1378 | { | |
1379 | PROV_RSA_CTX *prsactx = (PROV_RSA_CTX *)vprsactx; | |
1380 | ||
1381 | if (prsactx->mdctx == NULL) | |
1382 | return 0; | |
1383 | ||
1384 | return EVP_MD_CTX_get_params(prsactx->mdctx, params); | |
1385 | } | |
1386 | ||
1387 | static const OSSL_PARAM *rsa_gettable_ctx_md_params(void *vprsactx) | |
1388 | { | |
1389 | PROV_RSA_CTX *prsactx = (PROV_RSA_CTX *)vprsactx; | |
1390 | ||
1391 | if (prsactx->md == NULL) | |
1392 | return 0; | |
1393 | ||
1394 | return EVP_MD_gettable_ctx_params(prsactx->md); | |
1395 | } | |
1396 | ||
1397 | static int rsa_set_ctx_md_params(void *vprsactx, const OSSL_PARAM params[]) | |
1398 | { | |
1399 | PROV_RSA_CTX *prsactx = (PROV_RSA_CTX *)vprsactx; | |
1400 | ||
1401 | if (prsactx->mdctx == NULL) | |
1402 | return 0; | |
1403 | ||
1404 | return EVP_MD_CTX_set_params(prsactx->mdctx, params); | |
1405 | } | |
1406 | ||
1407 | static const OSSL_PARAM *rsa_settable_ctx_md_params(void *vprsactx) | |
1408 | { | |
1409 | PROV_RSA_CTX *prsactx = (PROV_RSA_CTX *)vprsactx; | |
1410 | ||
1411 | if (prsactx->md == NULL) | |
1412 | return 0; | |
1413 | ||
1414 | return EVP_MD_settable_ctx_params(prsactx->md); | |
1415 | } | |
1416 | ||
1be63951 | 1417 | const OSSL_DISPATCH ossl_rsa_signature_functions[] = { |
6f4b7663 | 1418 | { OSSL_FUNC_SIGNATURE_NEWCTX, (void (*)(void))rsa_newctx }, |
0ec36bf1 | 1419 | { OSSL_FUNC_SIGNATURE_SIGN_INIT, (void (*)(void))rsa_sign_init }, |
6f4b7663 | 1420 | { OSSL_FUNC_SIGNATURE_SIGN, (void (*)(void))rsa_sign }, |
0ec36bf1 | 1421 | { OSSL_FUNC_SIGNATURE_VERIFY_INIT, (void (*)(void))rsa_verify_init }, |
6f4b7663 | 1422 | { OSSL_FUNC_SIGNATURE_VERIFY, (void (*)(void))rsa_verify }, |
0ec36bf1 RL |
1423 | { OSSL_FUNC_SIGNATURE_VERIFY_RECOVER_INIT, |
1424 | (void (*)(void))rsa_verify_recover_init }, | |
1425 | { OSSL_FUNC_SIGNATURE_VERIFY_RECOVER, | |
1426 | (void (*)(void))rsa_verify_recover }, | |
6f4b7663 | 1427 | { OSSL_FUNC_SIGNATURE_DIGEST_SIGN_INIT, |
0ec36bf1 | 1428 | (void (*)(void))rsa_digest_sign_init }, |
6f4b7663 RL |
1429 | { OSSL_FUNC_SIGNATURE_DIGEST_SIGN_UPDATE, |
1430 | (void (*)(void))rsa_digest_signverify_update }, | |
1431 | { OSSL_FUNC_SIGNATURE_DIGEST_SIGN_FINAL, | |
1432 | (void (*)(void))rsa_digest_sign_final }, | |
1433 | { OSSL_FUNC_SIGNATURE_DIGEST_VERIFY_INIT, | |
0ec36bf1 | 1434 | (void (*)(void))rsa_digest_verify_init }, |
6f4b7663 RL |
1435 | { OSSL_FUNC_SIGNATURE_DIGEST_VERIFY_UPDATE, |
1436 | (void (*)(void))rsa_digest_signverify_update }, | |
1437 | { OSSL_FUNC_SIGNATURE_DIGEST_VERIFY_FINAL, | |
1438 | (void (*)(void))rsa_digest_verify_final }, | |
1439 | { OSSL_FUNC_SIGNATURE_FREECTX, (void (*)(void))rsa_freectx }, | |
1440 | { OSSL_FUNC_SIGNATURE_DUPCTX, (void (*)(void))rsa_dupctx }, | |
1441 | { OSSL_FUNC_SIGNATURE_GET_CTX_PARAMS, (void (*)(void))rsa_get_ctx_params }, | |
1442 | { OSSL_FUNC_SIGNATURE_GETTABLE_CTX_PARAMS, | |
1443 | (void (*)(void))rsa_gettable_ctx_params }, | |
1444 | { OSSL_FUNC_SIGNATURE_SET_CTX_PARAMS, (void (*)(void))rsa_set_ctx_params }, | |
1445 | { OSSL_FUNC_SIGNATURE_SETTABLE_CTX_PARAMS, | |
1446 | (void (*)(void))rsa_settable_ctx_params }, | |
1447 | { OSSL_FUNC_SIGNATURE_GET_CTX_MD_PARAMS, | |
1448 | (void (*)(void))rsa_get_ctx_md_params }, | |
1449 | { OSSL_FUNC_SIGNATURE_GETTABLE_CTX_MD_PARAMS, | |
1450 | (void (*)(void))rsa_gettable_ctx_md_params }, | |
1451 | { OSSL_FUNC_SIGNATURE_SET_CTX_MD_PARAMS, | |
1452 | (void (*)(void))rsa_set_ctx_md_params }, | |
1453 | { OSSL_FUNC_SIGNATURE_SETTABLE_CTX_MD_PARAMS, | |
1454 | (void (*)(void))rsa_settable_ctx_md_params }, | |
1455 | { 0, NULL } | |
1456 | }; |