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2039c421 | 1 | /* |
83cf7abf | 2 | * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved. |
d02b48c6 | 3 | * |
2a7b6f39 | 4 | * Licensed under the Apache License 2.0 (the "License"). You may not use |
2039c421 RS |
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 | |
d02b48c6 RE |
8 | */ |
9 | ||
c5f87134 P |
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 | ||
d02b48c6 | 16 | #include <stdio.h> |
ec577822 | 17 | #include <openssl/crypto.h> |
89abd1b6 MC |
18 | #include <openssl/core_names.h> |
19 | #include <openssl/engine.h> | |
20 | #include <openssl/evp.h> | |
b39fc560 | 21 | #include "internal/cryptlib.h" |
cd420b0b | 22 | #include "internal/refcount.h" |
25f2138b | 23 | #include "crypto/bn.h" |
25f2138b | 24 | #include "crypto/evp.h" |
c3a4fa4c | 25 | #include "crypto/rsa.h" |
706457b7 | 26 | #include "rsa_local.h" |
d02b48c6 | 27 | |
afb638f1 MC |
28 | static RSA *rsa_new_intern(ENGINE *engine, OPENSSL_CTX *libctx); |
29 | ||
30 | #ifndef FIPS_MODE | |
6b691a5c | 31 | RSA *RSA_new(void) |
0f113f3e | 32 | { |
afb638f1 | 33 | return rsa_new_intern(NULL, NULL); |
0f113f3e | 34 | } |
ce8b2574 | 35 | |
29c1f061 | 36 | const RSA_METHOD *RSA_get_method(const RSA *rsa) |
0f113f3e MC |
37 | { |
38 | return rsa->meth; | |
39 | } | |
cb78486d GT |
40 | |
41 | int RSA_set_method(RSA *rsa, const RSA_METHOD *meth) | |
0f113f3e MC |
42 | { |
43 | /* | |
44 | * NB: The caller is specifically setting a method, so it's not up to us | |
45 | * to deal with which ENGINE it comes from. | |
46 | */ | |
47 | const RSA_METHOD *mtmp; | |
48 | mtmp = rsa->meth; | |
49 | if (mtmp->finish) | |
50 | mtmp->finish(rsa); | |
0b13e9f0 | 51 | #ifndef OPENSSL_NO_ENGINE |
7c96dbcd RS |
52 | ENGINE_finish(rsa->engine); |
53 | rsa->engine = NULL; | |
0b13e9f0 | 54 | #endif |
0f113f3e MC |
55 | rsa->meth = meth; |
56 | if (meth->init) | |
57 | meth->init(rsa); | |
58 | return 1; | |
59 | } | |
ce8b2574 | 60 | |
5270e702 | 61 | RSA *RSA_new_method(ENGINE *engine) |
afb638f1 MC |
62 | { |
63 | return rsa_new_intern(engine, NULL); | |
64 | } | |
65 | #endif | |
66 | ||
67 | RSA *rsa_new_with_ctx(OPENSSL_CTX *libctx) | |
68 | { | |
69 | return rsa_new_intern(NULL, libctx); | |
70 | } | |
71 | ||
72 | static RSA *rsa_new_intern(ENGINE *engine, OPENSSL_CTX *libctx) | |
0f113f3e | 73 | { |
11ed851d | 74 | RSA *ret = OPENSSL_zalloc(sizeof(*ret)); |
d02b48c6 | 75 | |
0f113f3e | 76 | if (ret == NULL) { |
afb638f1 | 77 | RSAerr(0, ERR_R_MALLOC_FAILURE); |
0f113f3e MC |
78 | return NULL; |
79 | } | |
d02b48c6 | 80 | |
11ed851d F |
81 | ret->references = 1; |
82 | ret->lock = CRYPTO_THREAD_lock_new(); | |
83 | if (ret->lock == NULL) { | |
afb638f1 | 84 | RSAerr(0, ERR_R_MALLOC_FAILURE); |
11ed851d F |
85 | OPENSSL_free(ret); |
86 | return NULL; | |
87 | } | |
88 | ||
afb638f1 | 89 | ret->libctx = libctx; |
0f113f3e | 90 | ret->meth = RSA_get_default_method(); |
afb638f1 | 91 | #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODE) |
11ed851d | 92 | ret->flags = ret->meth->flags & ~RSA_FLAG_NON_FIPS_ALLOW; |
0f113f3e MC |
93 | if (engine) { |
94 | if (!ENGINE_init(engine)) { | |
afb638f1 | 95 | RSAerr(0, ERR_R_ENGINE_LIB); |
11ed851d | 96 | goto err; |
0f113f3e MC |
97 | } |
98 | ret->engine = engine; | |
90862ab4 | 99 | } else { |
0f113f3e | 100 | ret->engine = ENGINE_get_default_RSA(); |
90862ab4 | 101 | } |
0f113f3e MC |
102 | if (ret->engine) { |
103 | ret->meth = ENGINE_get_RSA(ret->engine); | |
7c96dbcd | 104 | if (ret->meth == NULL) { |
afb638f1 | 105 | RSAerr(0, ERR_R_ENGINE_LIB); |
11ed851d | 106 | goto err; |
0f113f3e MC |
107 | } |
108 | } | |
0b13e9f0 | 109 | #endif |
0c9de428 | 110 | |
0f113f3e | 111 | ret->flags = ret->meth->flags & ~RSA_FLAG_NON_FIPS_ALLOW; |
a3327784 | 112 | #ifndef FIPS_MODE |
0f113f3e | 113 | if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_RSA, ret, &ret->ex_data)) { |
11ed851d | 114 | goto err; |
d188a536 | 115 | } |
a3327784 | 116 | #endif |
d188a536 AG |
117 | |
118 | if ((ret->meth->init != NULL) && !ret->meth->init(ret)) { | |
afb638f1 | 119 | RSAerr(0, ERR_R_INIT_FAIL); |
11ed851d | 120 | goto err; |
0f113f3e | 121 | } |
d188a536 AG |
122 | |
123 | return ret; | |
11ed851d | 124 | |
544648a8 | 125 | err: |
11ed851d F |
126 | RSA_free(ret); |
127 | return NULL; | |
0f113f3e | 128 | } |
d02b48c6 | 129 | |
6b691a5c | 130 | void RSA_free(RSA *r) |
0f113f3e MC |
131 | { |
132 | int i; | |
d02b48c6 | 133 | |
0f113f3e MC |
134 | if (r == NULL) |
135 | return; | |
d02b48c6 | 136 | |
2f545ae4 | 137 | CRYPTO_DOWN_REF(&r->references, &i, r->lock); |
f3f1cf84 | 138 | REF_PRINT_COUNT("RSA", r); |
0f113f3e MC |
139 | if (i > 0) |
140 | return; | |
f3f1cf84 | 141 | REF_ASSERT_ISNT(i < 0); |
d02b48c6 | 142 | |
0c5d725e | 143 | if (r->meth != NULL && r->meth->finish != NULL) |
0f113f3e | 144 | r->meth->finish(r); |
afb638f1 | 145 | #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODE) |
412bafdc | 146 | ENGINE_finish(r->engine); |
0b13e9f0 | 147 | #endif |
d02b48c6 | 148 | |
a3327784 | 149 | #ifndef FIPS_MODE |
0f113f3e | 150 | CRYPTO_free_ex_data(CRYPTO_EX_INDEX_RSA, r, &r->ex_data); |
a3327784 | 151 | #endif |
7abe8305 | 152 | |
d188a536 AG |
153 | CRYPTO_THREAD_lock_free(r->lock); |
154 | ||
c033101d MB |
155 | BN_free(r->n); |
156 | BN_free(r->e); | |
23a1d5e9 RS |
157 | BN_clear_free(r->d); |
158 | BN_clear_free(r->p); | |
159 | BN_clear_free(r->q); | |
160 | BN_clear_free(r->dmp1); | |
161 | BN_clear_free(r->dmq1); | |
162 | BN_clear_free(r->iqmp); | |
afb638f1 MC |
163 | /* TODO(3.0): Support PSS in FIPS_MODE */ |
164 | #ifndef FIPS_MODE | |
d771441d | 165 | RSA_PSS_PARAMS_free(r->pss); |
665d899f | 166 | sk_RSA_PRIME_INFO_pop_free(r->prime_infos, rsa_multip_info_free); |
afb638f1 | 167 | #endif |
23a1d5e9 RS |
168 | BN_BLINDING_free(r->blinding); |
169 | BN_BLINDING_free(r->mt_blinding); | |
4c42ebd2 | 170 | OPENSSL_free(r->bignum_data); |
0f113f3e MC |
171 | OPENSSL_free(r); |
172 | } | |
d02b48c6 | 173 | |
6ac4e8bd | 174 | int RSA_up_ref(RSA *r) |
0f113f3e | 175 | { |
d188a536 AG |
176 | int i; |
177 | ||
2f545ae4 | 178 | if (CRYPTO_UP_REF(&r->references, &i, r->lock) <= 0) |
d188a536 | 179 | return 0; |
f3f1cf84 RS |
180 | |
181 | REF_PRINT_COUNT("RSA", r); | |
182 | REF_ASSERT_ISNT(i < 2); | |
8686c474 | 183 | return i > 1 ? 1 : 0; |
0f113f3e | 184 | } |
5cbc2e8b | 185 | |
a3327784 | 186 | #ifndef FIPS_MODE |
dd9d233e | 187 | int RSA_set_ex_data(RSA *r, int idx, void *arg) |
0f113f3e | 188 | { |
8686c474 | 189 | return CRYPTO_set_ex_data(&r->ex_data, idx, arg); |
0f113f3e | 190 | } |
58964a49 | 191 | |
29c1f061 | 192 | void *RSA_get_ex_data(const RSA *r, int idx) |
0f113f3e | 193 | { |
8686c474 | 194 | return CRYPTO_get_ex_data(&r->ex_data, idx); |
0f113f3e | 195 | } |
a3327784 | 196 | #endif |
58964a49 | 197 | |
97b0b713 P |
198 | /* |
199 | * Define a scaling constant for our fixed point arithmetic. | |
200 | * This value must be a power of two because the base two logarithm code | |
201 | * makes this assumption. The exponent must also be a multiple of three so | |
202 | * that the scale factor has an exact cube root. Finally, the scale factor | |
203 | * should not be so large that a multiplication of two scaled numbers | |
204 | * overflows a 64 bit unsigned integer. | |
205 | */ | |
206 | static const unsigned int scale = 1 << 18; | |
207 | static const unsigned int cbrt_scale = 1 << (2 * 18 / 3); | |
208 | ||
209 | /* Define some constants, none exceed 32 bits */ | |
210 | static const unsigned int log_2 = 0x02c5c8; /* scale * log(2) */ | |
211 | static const unsigned int log_e = 0x05c551; /* scale * log2(M_E) */ | |
212 | static const unsigned int c1_923 = 0x07b126; /* scale * 1.923 */ | |
213 | static const unsigned int c4_690 = 0x12c28f; /* scale * 4.690 */ | |
214 | ||
215 | /* | |
2beb004b | 216 | * Multiply two scaled integers together and rescale the result. |
97b0b713 P |
217 | */ |
218 | static ossl_inline uint64_t mul2(uint64_t a, uint64_t b) | |
219 | { | |
220 | return a * b / scale; | |
221 | } | |
222 | ||
223 | /* | |
224 | * Calculate the cube root of a 64 bit scaled integer. | |
225 | * Although the cube root of a 64 bit number does fit into a 32 bit unsigned | |
226 | * integer, this is not guaranteed after scaling, so this function has a | |
227 | * 64 bit return. This uses the shifting nth root algorithm with some | |
228 | * algebraic simplifications. | |
229 | */ | |
230 | static uint64_t icbrt64(uint64_t x) | |
231 | { | |
232 | uint64_t r = 0; | |
233 | uint64_t b; | |
234 | int s; | |
235 | ||
236 | for (s = 63; s >= 0; s -= 3) { | |
237 | r <<= 1; | |
238 | b = 3 * r * (r + 1) + 1; | |
239 | if ((x >> s) >= b) { | |
240 | x -= b << s; | |
241 | r++; | |
242 | } | |
243 | } | |
244 | return r * cbrt_scale; | |
245 | } | |
246 | ||
247 | /* | |
248 | * Calculate the natural logarithm of a 64 bit scaled integer. | |
249 | * This is done by calculating a base two logarithm and scaling. | |
250 | * The maximum logarithm (base 2) is 64 and this reduces base e, so | |
251 | * a 32 bit result should not overflow. The argument passed must be | |
252 | * greater than unity so we don't need to handle negative results. | |
253 | */ | |
254 | static uint32_t ilog_e(uint64_t v) | |
255 | { | |
256 | uint32_t i, r = 0; | |
257 | ||
258 | /* | |
259 | * Scale down the value into the range 1 .. 2. | |
260 | * | |
261 | * If fractional numbers need to be processed, another loop needs | |
262 | * to go here that checks v < scale and if so multiplies it by 2 and | |
263 | * reduces r by scale. This also means making r signed. | |
264 | */ | |
265 | while (v >= 2 * scale) { | |
266 | v >>= 1; | |
267 | r += scale; | |
268 | } | |
269 | for (i = scale / 2; i != 0; i /= 2) { | |
270 | v = mul2(v, v); | |
271 | if (v >= 2 * scale) { | |
272 | v >>= 1; | |
273 | r += i; | |
274 | } | |
275 | } | |
276 | r = (r * (uint64_t)scale) / log_e; | |
277 | return r; | |
278 | } | |
279 | ||
280 | /* | |
281 | * NIST SP 800-56B rev 2 Appendix D: Maximum Security Strength Estimates for IFC | |
282 | * Modulus Lengths. | |
283 | * | |
284 | * E = \frac{1.923 \sqrt[3]{nBits \cdot log_e(2)} | |
285 | * \cdot(log_e(nBits \cdot log_e(2))^{2/3} - 4.69}{log_e(2)} | |
286 | * The two cube roots are merged together here. | |
287 | */ | |
8240d5fa | 288 | uint16_t rsa_compute_security_bits(int n) |
97b0b713 P |
289 | { |
290 | uint64_t x; | |
291 | uint32_t lx; | |
292 | uint16_t y; | |
293 | ||
294 | /* Look for common values as listed in SP 800-56B rev 2 Appendix D */ | |
295 | switch (n) { | |
296 | case 2048: | |
297 | return 112; | |
298 | case 3072: | |
299 | return 128; | |
300 | case 4096: | |
301 | return 152; | |
302 | case 6144: | |
303 | return 176; | |
304 | case 8192: | |
305 | return 200; | |
306 | } | |
307 | /* | |
308 | * The first incorrect result (i.e. not accurate or off by one low) occurs | |
309 | * for n = 699668. The true value here is 1200. Instead of using this n | |
310 | * as the check threshold, the smallest n such that the correct result is | |
311 | * 1200 is used instead. | |
312 | */ | |
313 | if (n >= 687737) | |
314 | return 1200; | |
315 | if (n < 8) | |
316 | return 0; | |
317 | ||
318 | x = n * (uint64_t)log_2; | |
319 | lx = ilog_e(x); | |
320 | y = (uint16_t)((mul2(c1_923, icbrt64(mul2(mul2(x, lx), lx))) - c4_690) | |
321 | / log_2); | |
322 | return (y + 4) & ~7; | |
323 | } | |
324 | ||
2514fa79 | 325 | int RSA_security_bits(const RSA *rsa) |
0f113f3e | 326 | { |
0122add6 AP |
327 | int bits = BN_num_bits(rsa->n); |
328 | ||
afb638f1 | 329 | #ifndef FIPS_MODE |
0122add6 AP |
330 | if (rsa->version == RSA_ASN1_VERSION_MULTI) { |
331 | /* This ought to mean that we have private key at hand. */ | |
332 | int ex_primes = sk_RSA_PRIME_INFO_num(rsa->prime_infos); | |
333 | ||
334 | if (ex_primes <= 0 || (ex_primes + 2) > rsa_multip_cap(bits)) | |
335 | return 0; | |
336 | } | |
afb638f1 | 337 | #endif |
97b0b713 | 338 | return rsa_compute_security_bits(bits); |
0f113f3e | 339 | } |
9862e9aa RL |
340 | |
341 | int RSA_set0_key(RSA *r, BIGNUM *n, BIGNUM *e, BIGNUM *d) | |
342 | { | |
fd809cfd | 343 | /* If the fields n and e in r are NULL, the corresponding input |
1da12e34 RL |
344 | * parameters MUST be non-NULL for n and e. d may be |
345 | * left NULL (in case only the public key is used). | |
1da12e34 | 346 | */ |
b84e1226 MC |
347 | if ((r->n == NULL && n == NULL) |
348 | || (r->e == NULL && e == NULL)) | |
9862e9aa RL |
349 | return 0; |
350 | ||
1da12e34 RL |
351 | if (n != NULL) { |
352 | BN_free(r->n); | |
353 | r->n = n; | |
354 | } | |
355 | if (e != NULL) { | |
356 | BN_free(r->e); | |
357 | r->e = e; | |
358 | } | |
359 | if (d != NULL) { | |
c033101d | 360 | BN_clear_free(r->d); |
1da12e34 | 361 | r->d = d; |
311e903d | 362 | BN_set_flags(r->d, BN_FLG_CONSTTIME); |
1da12e34 | 363 | } |
29be6023 | 364 | r->dirty_cnt++; |
9862e9aa RL |
365 | |
366 | return 1; | |
367 | } | |
368 | ||
369 | int RSA_set0_factors(RSA *r, BIGNUM *p, BIGNUM *q) | |
370 | { | |
fd809cfd | 371 | /* If the fields p and q in r are NULL, the corresponding input |
1da12e34 | 372 | * parameters MUST be non-NULL. |
1da12e34 | 373 | */ |
b84e1226 MC |
374 | if ((r->p == NULL && p == NULL) |
375 | || (r->q == NULL && q == NULL)) | |
9862e9aa RL |
376 | return 0; |
377 | ||
1da12e34 | 378 | if (p != NULL) { |
c033101d | 379 | BN_clear_free(r->p); |
1da12e34 | 380 | r->p = p; |
311e903d | 381 | BN_set_flags(r->p, BN_FLG_CONSTTIME); |
1da12e34 RL |
382 | } |
383 | if (q != NULL) { | |
c033101d | 384 | BN_clear_free(r->q); |
1da12e34 | 385 | r->q = q; |
311e903d | 386 | BN_set_flags(r->q, BN_FLG_CONSTTIME); |
1da12e34 | 387 | } |
29be6023 | 388 | r->dirty_cnt++; |
9862e9aa RL |
389 | |
390 | return 1; | |
391 | } | |
392 | ||
393 | int RSA_set0_crt_params(RSA *r, BIGNUM *dmp1, BIGNUM *dmq1, BIGNUM *iqmp) | |
394 | { | |
fd809cfd | 395 | /* If the fields dmp1, dmq1 and iqmp in r are NULL, the corresponding input |
1da12e34 | 396 | * parameters MUST be non-NULL. |
1da12e34 | 397 | */ |
b84e1226 MC |
398 | if ((r->dmp1 == NULL && dmp1 == NULL) |
399 | || (r->dmq1 == NULL && dmq1 == NULL) | |
400 | || (r->iqmp == NULL && iqmp == NULL)) | |
9862e9aa RL |
401 | return 0; |
402 | ||
1da12e34 | 403 | if (dmp1 != NULL) { |
c033101d | 404 | BN_clear_free(r->dmp1); |
1da12e34 | 405 | r->dmp1 = dmp1; |
311e903d | 406 | BN_set_flags(r->dmp1, BN_FLG_CONSTTIME); |
1da12e34 RL |
407 | } |
408 | if (dmq1 != NULL) { | |
c033101d | 409 | BN_clear_free(r->dmq1); |
1da12e34 | 410 | r->dmq1 = dmq1; |
311e903d | 411 | BN_set_flags(r->dmq1, BN_FLG_CONSTTIME); |
1da12e34 RL |
412 | } |
413 | if (iqmp != NULL) { | |
c033101d | 414 | BN_clear_free(r->iqmp); |
1da12e34 | 415 | r->iqmp = iqmp; |
311e903d | 416 | BN_set_flags(r->iqmp, BN_FLG_CONSTTIME); |
1da12e34 | 417 | } |
29be6023 | 418 | r->dirty_cnt++; |
9862e9aa RL |
419 | |
420 | return 1; | |
421 | } | |
422 | ||
afb638f1 | 423 | #ifndef FIPS_MODE |
665d899f PY |
424 | /* |
425 | * Is it better to export RSA_PRIME_INFO structure | |
426 | * and related functions to let user pass a triplet? | |
427 | */ | |
428 | int RSA_set0_multi_prime_params(RSA *r, BIGNUM *primes[], BIGNUM *exps[], | |
429 | BIGNUM *coeffs[], int pnum) | |
430 | { | |
431 | STACK_OF(RSA_PRIME_INFO) *prime_infos, *old = NULL; | |
432 | RSA_PRIME_INFO *pinfo; | |
433 | int i; | |
434 | ||
435 | if (primes == NULL || exps == NULL || coeffs == NULL || pnum == 0) | |
436 | return 0; | |
437 | ||
438 | prime_infos = sk_RSA_PRIME_INFO_new_reserve(NULL, pnum); | |
439 | if (prime_infos == NULL) | |
440 | return 0; | |
441 | ||
442 | if (r->prime_infos != NULL) | |
443 | old = r->prime_infos; | |
444 | ||
445 | for (i = 0; i < pnum; i++) { | |
446 | pinfo = rsa_multip_info_new(); | |
447 | if (pinfo == NULL) | |
448 | goto err; | |
449 | if (primes[i] != NULL && exps[i] != NULL && coeffs[i] != NULL) { | |
d2baf88c CPG |
450 | BN_clear_free(pinfo->r); |
451 | BN_clear_free(pinfo->d); | |
452 | BN_clear_free(pinfo->t); | |
665d899f PY |
453 | pinfo->r = primes[i]; |
454 | pinfo->d = exps[i]; | |
455 | pinfo->t = coeffs[i]; | |
d2baf88c CPG |
456 | BN_set_flags(pinfo->r, BN_FLG_CONSTTIME); |
457 | BN_set_flags(pinfo->d, BN_FLG_CONSTTIME); | |
458 | BN_set_flags(pinfo->t, BN_FLG_CONSTTIME); | |
665d899f PY |
459 | } else { |
460 | rsa_multip_info_free(pinfo); | |
461 | goto err; | |
462 | } | |
463 | (void)sk_RSA_PRIME_INFO_push(prime_infos, pinfo); | |
464 | } | |
465 | ||
466 | r->prime_infos = prime_infos; | |
467 | ||
468 | if (!rsa_multip_calc_product(r)) { | |
469 | r->prime_infos = old; | |
470 | goto err; | |
471 | } | |
472 | ||
473 | if (old != NULL) { | |
474 | /* | |
475 | * This is hard to deal with, since the old infos could | |
476 | * also be set by this function and r, d, t should not | |
477 | * be freed in that case. So currently, stay consistent | |
478 | * with other *set0* functions: just free it... | |
479 | */ | |
480 | sk_RSA_PRIME_INFO_pop_free(old, rsa_multip_info_free); | |
481 | } | |
482 | ||
483 | r->version = RSA_ASN1_VERSION_MULTI; | |
29be6023 | 484 | r->dirty_cnt++; |
665d899f PY |
485 | |
486 | return 1; | |
487 | err: | |
488 | /* r, d, t should not be freed */ | |
489 | sk_RSA_PRIME_INFO_pop_free(prime_infos, rsa_multip_info_free_ex); | |
490 | return 0; | |
491 | } | |
afb638f1 | 492 | #endif |
665d899f | 493 | |
fd809cfd RL |
494 | void RSA_get0_key(const RSA *r, |
495 | const BIGNUM **n, const BIGNUM **e, const BIGNUM **d) | |
9862e9aa RL |
496 | { |
497 | if (n != NULL) | |
498 | *n = r->n; | |
499 | if (e != NULL) | |
500 | *e = r->e; | |
501 | if (d != NULL) | |
502 | *d = r->d; | |
503 | } | |
504 | ||
fd809cfd | 505 | void RSA_get0_factors(const RSA *r, const BIGNUM **p, const BIGNUM **q) |
9862e9aa RL |
506 | { |
507 | if (p != NULL) | |
508 | *p = r->p; | |
509 | if (q != NULL) | |
510 | *q = r->q; | |
511 | } | |
512 | ||
afb638f1 | 513 | #ifndef FIPS_MODE |
665d899f PY |
514 | int RSA_get_multi_prime_extra_count(const RSA *r) |
515 | { | |
516 | int pnum; | |
517 | ||
518 | pnum = sk_RSA_PRIME_INFO_num(r->prime_infos); | |
519 | if (pnum <= 0) | |
520 | pnum = 0; | |
521 | return pnum; | |
522 | } | |
523 | ||
524 | int RSA_get0_multi_prime_factors(const RSA *r, const BIGNUM *primes[]) | |
525 | { | |
526 | int pnum, i; | |
527 | RSA_PRIME_INFO *pinfo; | |
528 | ||
529 | if ((pnum = RSA_get_multi_prime_extra_count(r)) == 0) | |
530 | return 0; | |
531 | ||
532 | /* | |
533 | * return other primes | |
534 | * it's caller's responsibility to allocate oth_primes[pnum] | |
535 | */ | |
536 | for (i = 0; i < pnum; i++) { | |
537 | pinfo = sk_RSA_PRIME_INFO_value(r->prime_infos, i); | |
538 | primes[i] = pinfo->r; | |
539 | } | |
540 | ||
541 | return 1; | |
542 | } | |
afb638f1 | 543 | #endif |
665d899f | 544 | |
9862e9aa | 545 | void RSA_get0_crt_params(const RSA *r, |
fd809cfd RL |
546 | const BIGNUM **dmp1, const BIGNUM **dmq1, |
547 | const BIGNUM **iqmp) | |
9862e9aa RL |
548 | { |
549 | if (dmp1 != NULL) | |
550 | *dmp1 = r->dmp1; | |
551 | if (dmq1 != NULL) | |
552 | *dmq1 = r->dmq1; | |
553 | if (iqmp != NULL) | |
554 | *iqmp = r->iqmp; | |
555 | } | |
556 | ||
afb638f1 | 557 | #ifndef FIPS_MODE |
665d899f PY |
558 | int RSA_get0_multi_prime_crt_params(const RSA *r, const BIGNUM *exps[], |
559 | const BIGNUM *coeffs[]) | |
560 | { | |
561 | int pnum; | |
562 | ||
563 | if ((pnum = RSA_get_multi_prime_extra_count(r)) == 0) | |
564 | return 0; | |
565 | ||
566 | /* return other primes */ | |
567 | if (exps != NULL || coeffs != NULL) { | |
568 | RSA_PRIME_INFO *pinfo; | |
569 | int i; | |
570 | ||
571 | /* it's the user's job to guarantee the buffer length */ | |
572 | for (i = 0; i < pnum; i++) { | |
573 | pinfo = sk_RSA_PRIME_INFO_value(r->prime_infos, i); | |
574 | if (exps != NULL) | |
575 | exps[i] = pinfo->d; | |
576 | if (coeffs != NULL) | |
577 | coeffs[i] = pinfo->t; | |
578 | } | |
579 | } | |
580 | ||
581 | return 1; | |
582 | } | |
afb638f1 | 583 | #endif |
665d899f | 584 | |
6692ff77 DMSP |
585 | const BIGNUM *RSA_get0_n(const RSA *r) |
586 | { | |
587 | return r->n; | |
588 | } | |
589 | ||
590 | const BIGNUM *RSA_get0_e(const RSA *r) | |
591 | { | |
592 | return r->e; | |
593 | } | |
594 | ||
595 | const BIGNUM *RSA_get0_d(const RSA *r) | |
596 | { | |
597 | return r->d; | |
598 | } | |
599 | ||
600 | const BIGNUM *RSA_get0_p(const RSA *r) | |
601 | { | |
602 | return r->p; | |
603 | } | |
604 | ||
605 | const BIGNUM *RSA_get0_q(const RSA *r) | |
606 | { | |
607 | return r->q; | |
608 | } | |
609 | ||
610 | const BIGNUM *RSA_get0_dmp1(const RSA *r) | |
611 | { | |
612 | return r->dmp1; | |
613 | } | |
614 | ||
615 | const BIGNUM *RSA_get0_dmq1(const RSA *r) | |
616 | { | |
617 | return r->dmq1; | |
618 | } | |
619 | ||
620 | const BIGNUM *RSA_get0_iqmp(const RSA *r) | |
621 | { | |
622 | return r->iqmp; | |
623 | } | |
624 | ||
afb638f1 MC |
625 | /* TODO(3.0): Temporary until we move PSS support into the FIPS module */ |
626 | #ifndef FIPS_MODE | |
677add38 RL |
627 | const RSA_PSS_PARAMS *RSA_get0_pss_params(const RSA *r) |
628 | { | |
629 | return r->pss; | |
630 | } | |
afb638f1 | 631 | #endif |
677add38 | 632 | |
9862e9aa RL |
633 | void RSA_clear_flags(RSA *r, int flags) |
634 | { | |
635 | r->flags &= ~flags; | |
636 | } | |
637 | ||
638 | int RSA_test_flags(const RSA *r, int flags) | |
639 | { | |
640 | return r->flags & flags; | |
641 | } | |
642 | ||
643 | void RSA_set_flags(RSA *r, int flags) | |
644 | { | |
645 | r->flags |= flags; | |
646 | } | |
647 | ||
665d899f PY |
648 | int RSA_get_version(RSA *r) |
649 | { | |
650 | /* { two-prime(0), multi(1) } */ | |
651 | return r->version; | |
652 | } | |
653 | ||
afb638f1 | 654 | #ifndef FIPS_MODE |
e0685d24 | 655 | ENGINE *RSA_get0_engine(const RSA *r) |
9862e9aa RL |
656 | { |
657 | return r->engine; | |
658 | } | |
e5e04ee3 DSH |
659 | |
660 | int RSA_pkey_ctx_ctrl(EVP_PKEY_CTX *ctx, int optype, int cmd, int p1, void *p2) | |
661 | { | |
662 | /* If key type not RSA or RSA-PSS return error */ | |
663 | if (ctx != NULL && ctx->pmeth != NULL | |
664 | && ctx->pmeth->pkey_id != EVP_PKEY_RSA | |
665 | && ctx->pmeth->pkey_id != EVP_PKEY_RSA_PSS) | |
666 | return -1; | |
667 | return EVP_PKEY_CTX_ctrl(ctx, -1, optype, cmd, p1, p2); | |
668 | } | |
afb638f1 | 669 | #endif |
c3a4fa4c RL |
670 | |
671 | DEFINE_STACK_OF(BIGNUM) | |
672 | ||
673 | int rsa_set0_all_params(RSA *r, const STACK_OF(BIGNUM) *primes, | |
674 | const STACK_OF(BIGNUM) *exps, | |
675 | const STACK_OF(BIGNUM) *coeffs) | |
676 | { | |
afb638f1 | 677 | #ifndef FIPS_MODE |
c3a4fa4c | 678 | STACK_OF(RSA_PRIME_INFO) *prime_infos, *old_infos = NULL; |
afb638f1 | 679 | #endif |
c3a4fa4c RL |
680 | int pnum; |
681 | ||
682 | if (primes == NULL || exps == NULL || coeffs == NULL) | |
683 | return 0; | |
684 | ||
685 | pnum = sk_BIGNUM_num(primes); | |
686 | if (pnum < 2 | |
687 | || pnum != sk_BIGNUM_num(exps) | |
688 | || pnum != sk_BIGNUM_num(coeffs) + 1) | |
689 | return 0; | |
690 | ||
691 | if (!RSA_set0_factors(r, sk_BIGNUM_value(primes, 0), | |
692 | sk_BIGNUM_value(primes, 1)) | |
693 | || !RSA_set0_crt_params(r, sk_BIGNUM_value(exps, 0), | |
694 | sk_BIGNUM_value(exps, 1), | |
695 | sk_BIGNUM_value(coeffs, 0))) | |
696 | return 0; | |
697 | ||
afb638f1 | 698 | #ifndef FIPS_MODE |
c3a4fa4c | 699 | old_infos = r->prime_infos; |
afb638f1 | 700 | #endif |
c3a4fa4c RL |
701 | |
702 | if (pnum > 2) { | |
afb638f1 | 703 | #ifndef FIPS_MODE |
c3a4fa4c RL |
704 | int i; |
705 | ||
706 | prime_infos = sk_RSA_PRIME_INFO_new_reserve(NULL, pnum); | |
707 | if (prime_infos == NULL) | |
708 | return 0; | |
709 | ||
710 | for (i = 2; i < pnum; i++) { | |
711 | BIGNUM *prime = sk_BIGNUM_value(primes, i); | |
712 | BIGNUM *exp = sk_BIGNUM_value(exps, i); | |
713 | BIGNUM *coeff = sk_BIGNUM_value(coeffs, i - 1); | |
714 | RSA_PRIME_INFO *pinfo = NULL; | |
715 | ||
716 | if (!ossl_assert(prime != NULL && exp != NULL && coeff != NULL)) | |
717 | goto err; | |
718 | ||
719 | /* Using rsa_multip_info_new() is wasteful, so allocate directly */ | |
720 | if ((pinfo = OPENSSL_zalloc(sizeof(*pinfo))) == NULL) { | |
721 | ERR_raise(ERR_LIB_RSA, ERR_R_MALLOC_FAILURE); | |
722 | goto err; | |
723 | } | |
724 | ||
725 | pinfo->r = prime; | |
726 | pinfo->d = exp; | |
727 | pinfo->t = coeff; | |
728 | BN_set_flags(pinfo->r, BN_FLG_CONSTTIME); | |
729 | BN_set_flags(pinfo->d, BN_FLG_CONSTTIME); | |
730 | BN_set_flags(pinfo->t, BN_FLG_CONSTTIME); | |
731 | (void)sk_RSA_PRIME_INFO_push(prime_infos, pinfo); | |
732 | } | |
733 | ||
734 | r->prime_infos = prime_infos; | |
735 | ||
736 | if (!rsa_multip_calc_product(r)) { | |
737 | r->prime_infos = old_infos; | |
738 | goto err; | |
739 | } | |
afb638f1 MC |
740 | #else |
741 | return 0; | |
742 | #endif | |
c3a4fa4c RL |
743 | } |
744 | ||
afb638f1 | 745 | #ifndef FIPS_MODE |
c3a4fa4c RL |
746 | if (old_infos != NULL) { |
747 | /* | |
748 | * This is hard to deal with, since the old infos could | |
749 | * also be set by this function and r, d, t should not | |
750 | * be freed in that case. So currently, stay consistent | |
751 | * with other *set0* functions: just free it... | |
752 | */ | |
753 | sk_RSA_PRIME_INFO_pop_free(old_infos, rsa_multip_info_free); | |
754 | } | |
afb638f1 | 755 | #endif |
c3a4fa4c RL |
756 | |
757 | r->version = pnum > 2 ? RSA_ASN1_VERSION_MULTI : RSA_ASN1_VERSION_DEFAULT; | |
758 | r->dirty_cnt++; | |
759 | ||
760 | return 1; | |
afb638f1 | 761 | #ifndef FIPS_MODE |
c3a4fa4c RL |
762 | err: |
763 | /* r, d, t should not be freed */ | |
764 | sk_RSA_PRIME_INFO_pop_free(prime_infos, rsa_multip_info_free_ex); | |
765 | return 0; | |
afb638f1 | 766 | #endif |
c3a4fa4c RL |
767 | } |
768 | ||
769 | DEFINE_SPECIAL_STACK_OF_CONST(BIGNUM_const, BIGNUM) | |
770 | ||
771 | int rsa_get0_all_params(RSA *r, STACK_OF(BIGNUM_const) *primes, | |
772 | STACK_OF(BIGNUM_const) *exps, | |
773 | STACK_OF(BIGNUM_const) *coeffs) | |
774 | { | |
afb638f1 | 775 | #ifndef FIPS_MODE |
c3a4fa4c RL |
776 | RSA_PRIME_INFO *pinfo; |
777 | int i, pnum; | |
afb638f1 | 778 | #endif |
c3a4fa4c RL |
779 | |
780 | if (r == NULL) | |
781 | return 0; | |
782 | ||
a9127c1d RL |
783 | /* If |p| is NULL, there are no CRT parameters */ |
784 | if (RSA_get0_p(r) == NULL) | |
785 | return 1; | |
786 | ||
c3a4fa4c RL |
787 | sk_BIGNUM_const_push(primes, RSA_get0_p(r)); |
788 | sk_BIGNUM_const_push(primes, RSA_get0_q(r)); | |
789 | sk_BIGNUM_const_push(exps, RSA_get0_dmp1(r)); | |
790 | sk_BIGNUM_const_push(exps, RSA_get0_dmq1(r)); | |
791 | sk_BIGNUM_const_push(coeffs, RSA_get0_iqmp(r)); | |
afb638f1 MC |
792 | |
793 | #ifndef FIPS_MODE | |
794 | pnum = RSA_get_multi_prime_extra_count(r); | |
c3a4fa4c RL |
795 | for (i = 0; i < pnum; i++) { |
796 | pinfo = sk_RSA_PRIME_INFO_value(r->prime_infos, i); | |
797 | sk_BIGNUM_const_push(primes, pinfo->r); | |
798 | sk_BIGNUM_const_push(exps, pinfo->d); | |
799 | sk_BIGNUM_const_push(coeffs, pinfo->t); | |
800 | } | |
afb638f1 | 801 | #endif |
c3a4fa4c RL |
802 | |
803 | return 1; | |
804 | } | |
89abd1b6 | 805 | |
afb638f1 | 806 | #ifndef FIPS_MODE |
89abd1b6 MC |
807 | int EVP_PKEY_CTX_set_rsa_padding(EVP_PKEY_CTX *ctx, int pad_mode) |
808 | { | |
809 | OSSL_PARAM pad_params[2], *p = pad_params; | |
810 | ||
811 | if (ctx == NULL) { | |
812 | ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED); | |
813 | /* Uses the same return values as EVP_PKEY_CTX_ctrl */ | |
814 | return -2; | |
815 | } | |
816 | ||
817 | /* If key type not RSA or RSA-PSS return error */ | |
818 | if (ctx->pmeth != NULL | |
819 | && ctx->pmeth->pkey_id != EVP_PKEY_RSA | |
820 | && ctx->pmeth->pkey_id != EVP_PKEY_RSA_PSS) | |
821 | return -1; | |
822 | ||
823 | /* TODO(3.0): Remove this eventually when no more legacy */ | |
6f4b7663 RL |
824 | if ((!EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx) |
825 | || ctx->op.ciph.ciphprovctx == NULL) | |
826 | && (!EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx) | |
827 | || ctx->op.sig.sigprovctx == NULL)) | |
89abd1b6 MC |
828 | return EVP_PKEY_CTX_ctrl(ctx, -1, -1, EVP_PKEY_CTRL_RSA_PADDING, |
829 | pad_mode, NULL); | |
830 | ||
6f4b7663 | 831 | *p++ = OSSL_PARAM_construct_int(OSSL_PKEY_PARAM_PAD_MODE, &pad_mode); |
89abd1b6 MC |
832 | *p++ = OSSL_PARAM_construct_end(); |
833 | ||
834 | return EVP_PKEY_CTX_set_params(ctx, pad_params); | |
835 | } | |
836 | ||
837 | int EVP_PKEY_CTX_get_rsa_padding(EVP_PKEY_CTX *ctx, int *pad_mode) | |
838 | { | |
839 | OSSL_PARAM pad_params[2], *p = pad_params; | |
840 | ||
841 | if (ctx == NULL || pad_mode == NULL) { | |
842 | ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED); | |
843 | /* Uses the same return values as EVP_PKEY_CTX_ctrl */ | |
844 | return -2; | |
845 | } | |
846 | ||
847 | /* If key type not RSA or RSA-PSS return error */ | |
848 | if (ctx->pmeth != NULL | |
849 | && ctx->pmeth->pkey_id != EVP_PKEY_RSA | |
850 | && ctx->pmeth->pkey_id != EVP_PKEY_RSA_PSS) | |
851 | return -1; | |
852 | ||
853 | /* TODO(3.0): Remove this eventually when no more legacy */ | |
6f4b7663 RL |
854 | if ((!EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx) |
855 | || ctx->op.ciph.ciphprovctx == NULL) | |
856 | && (!EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx) | |
857 | || ctx->op.sig.sigprovctx == NULL)) | |
89abd1b6 MC |
858 | return EVP_PKEY_CTX_ctrl(ctx, -1, -1, EVP_PKEY_CTRL_GET_RSA_PADDING, 0, |
859 | pad_mode); | |
860 | ||
6f4b7663 | 861 | *p++ = OSSL_PARAM_construct_int(OSSL_PKEY_PARAM_PAD_MODE, pad_mode); |
89abd1b6 MC |
862 | *p++ = OSSL_PARAM_construct_end(); |
863 | ||
864 | if (!EVP_PKEY_CTX_get_params(ctx, pad_params)) | |
865 | return 0; | |
866 | ||
867 | return 1; | |
868 | ||
869 | } | |
870 | ||
871 | int EVP_PKEY_CTX_set_rsa_oaep_md(EVP_PKEY_CTX *ctx, const EVP_MD *md) | |
872 | { | |
873 | const char *name; | |
874 | ||
875 | if (ctx == NULL || !EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)) { | |
876 | ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED); | |
877 | /* Uses the same return values as EVP_PKEY_CTX_ctrl */ | |
878 | return -2; | |
879 | } | |
880 | ||
881 | /* If key type not RSA return error */ | |
882 | if (ctx->pmeth != NULL && ctx->pmeth->pkey_id != EVP_PKEY_RSA) | |
883 | return -1; | |
884 | ||
885 | /* TODO(3.0): Remove this eventually when no more legacy */ | |
886 | if (ctx->op.ciph.ciphprovctx == NULL) | |
887 | return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_TYPE_CRYPT, | |
888 | EVP_PKEY_CTRL_RSA_OAEP_MD, 0, (void *)md); | |
889 | ||
890 | name = (md == NULL) ? "" : EVP_MD_name(md); | |
891 | ||
892 | return EVP_PKEY_CTX_set_rsa_oaep_md_name(ctx, name, NULL); | |
893 | } | |
894 | ||
895 | int EVP_PKEY_CTX_set_rsa_oaep_md_name(EVP_PKEY_CTX *ctx, const char *mdname, | |
896 | const char *mdprops) | |
897 | { | |
898 | OSSL_PARAM rsa_params[3], *p = rsa_params; | |
899 | ||
900 | if (ctx == NULL || !EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)) { | |
901 | ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED); | |
902 | /* Uses the same return values as EVP_PKEY_CTX_ctrl */ | |
903 | return -2; | |
904 | } | |
905 | ||
906 | /* If key type not RSA return error */ | |
907 | if (ctx->pmeth != NULL && ctx->pmeth->pkey_id != EVP_PKEY_RSA) | |
908 | return -1; | |
909 | ||
910 | ||
911 | *p++ = OSSL_PARAM_construct_utf8_string(OSSL_ASYM_CIPHER_PARAM_OAEP_DIGEST, | |
912 | /* | |
913 | * Cast away the const. This is read | |
914 | * only so should be safe | |
915 | */ | |
8b6ffd40 | 916 | (char *)mdname, 0); |
89abd1b6 MC |
917 | if (mdprops != NULL) { |
918 | *p++ = OSSL_PARAM_construct_utf8_string( | |
919 | OSSL_ASYM_CIPHER_PARAM_OAEP_DIGEST_PROPS, | |
920 | /* | |
921 | * Cast away the const. This is read | |
922 | * only so should be safe | |
923 | */ | |
8b6ffd40 | 924 | (char *)mdprops, 0); |
89abd1b6 MC |
925 | } |
926 | *p++ = OSSL_PARAM_construct_end(); | |
927 | ||
928 | return EVP_PKEY_CTX_set_params(ctx, rsa_params); | |
929 | } | |
930 | ||
931 | int EVP_PKEY_CTX_get_rsa_oaep_md_name(EVP_PKEY_CTX *ctx, char *name, | |
932 | size_t namelen) | |
933 | { | |
934 | OSSL_PARAM rsa_params[2], *p = rsa_params; | |
935 | ||
936 | if (ctx == NULL || !EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)) { | |
937 | ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED); | |
938 | /* Uses the same return values as EVP_PKEY_CTX_ctrl */ | |
939 | return -2; | |
940 | } | |
941 | ||
942 | /* If key type not RSA return error */ | |
943 | if (ctx->pmeth != NULL && ctx->pmeth->pkey_id != EVP_PKEY_RSA) | |
944 | return -1; | |
945 | ||
946 | *p++ = OSSL_PARAM_construct_utf8_string(OSSL_ASYM_CIPHER_PARAM_OAEP_DIGEST, | |
947 | name, namelen); | |
948 | *p++ = OSSL_PARAM_construct_end(); | |
949 | ||
950 | if (!EVP_PKEY_CTX_get_params(ctx, rsa_params)) | |
951 | return -1; | |
952 | ||
953 | return 1; | |
954 | } | |
955 | ||
956 | int EVP_PKEY_CTX_get_rsa_oaep_md(EVP_PKEY_CTX *ctx, const EVP_MD **md) | |
957 | { | |
958 | /* 80 should be big enough */ | |
959 | char name[80] = ""; | |
960 | ||
961 | if (ctx == NULL || md == NULL || !EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)) { | |
962 | ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED); | |
963 | /* Uses the same return values as EVP_PKEY_CTX_ctrl */ | |
964 | return -2; | |
965 | } | |
966 | ||
967 | /* If key type not RSA return error */ | |
968 | if (ctx->pmeth != NULL && ctx->pmeth->pkey_id != EVP_PKEY_RSA) | |
969 | return -1; | |
970 | ||
971 | /* TODO(3.0): Remove this eventually when no more legacy */ | |
972 | if (ctx->op.ciph.ciphprovctx == NULL) | |
973 | return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_TYPE_CRYPT, | |
974 | EVP_PKEY_CTRL_GET_RSA_OAEP_MD, 0, (void *)md); | |
975 | ||
976 | if (EVP_PKEY_CTX_get_rsa_oaep_md_name(ctx, name, sizeof(name)) <= 0) | |
977 | return -1; | |
978 | ||
979 | /* May be NULL meaning "unknown" */ | |
980 | *md = EVP_get_digestbyname(name); | |
981 | ||
982 | return 1; | |
983 | } | |
984 | ||
985 | int EVP_PKEY_CTX_set_rsa_mgf1_md(EVP_PKEY_CTX *ctx, const EVP_MD *md) | |
986 | { | |
987 | const char *name; | |
988 | ||
989 | if (ctx == NULL | |
990 | || (!EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx) | |
991 | && !EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx))) { | |
992 | ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED); | |
993 | /* Uses the same return values as EVP_PKEY_CTX_ctrl */ | |
994 | return -2; | |
995 | } | |
996 | ||
997 | /* If key type not RSA return error */ | |
998 | if (ctx->pmeth != NULL | |
999 | && ctx->pmeth->pkey_id != EVP_PKEY_RSA | |
1000 | && ctx->pmeth->pkey_id != EVP_PKEY_RSA_PSS) | |
1001 | return -1; | |
1002 | ||
1003 | /* TODO(3.0): Remove this eventually when no more legacy */ | |
1004 | if ((EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx) | |
1005 | && ctx->op.ciph.ciphprovctx == NULL) | |
1006 | || (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx) | |
1007 | && ctx->op.sig.sigprovctx == NULL)) | |
1008 | return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, | |
1009 | EVP_PKEY_OP_TYPE_SIG | EVP_PKEY_OP_TYPE_CRYPT, | |
1010 | EVP_PKEY_CTRL_RSA_MGF1_MD, 0, (void *)md); | |
1011 | ||
1012 | name = (md == NULL) ? "" : EVP_MD_name(md); | |
1013 | ||
1014 | return EVP_PKEY_CTX_set_rsa_mgf1_md_name(ctx, name, NULL); | |
1015 | } | |
1016 | ||
1017 | int EVP_PKEY_CTX_set_rsa_mgf1_md_name(EVP_PKEY_CTX *ctx, const char *mdname, | |
1018 | const char *mdprops) | |
1019 | { | |
1020 | OSSL_PARAM rsa_params[3], *p = rsa_params; | |
1021 | ||
1022 | if (ctx == NULL | |
1023 | || mdname == NULL | |
1024 | || (!EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx) | |
1025 | && !EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx))) { | |
1026 | ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED); | |
1027 | /* Uses the same return values as EVP_PKEY_CTX_ctrl */ | |
1028 | return -2; | |
1029 | } | |
1030 | ||
1031 | /* If key type not RSA return error */ | |
1032 | if (ctx->pmeth != NULL | |
1033 | && ctx->pmeth->pkey_id != EVP_PKEY_RSA | |
1034 | && ctx->pmeth->pkey_id != EVP_PKEY_RSA_PSS) | |
1035 | return -1; | |
1036 | ||
6f4b7663 | 1037 | *p++ = OSSL_PARAM_construct_utf8_string(OSSL_PKEY_PARAM_MGF1_DIGEST, |
89abd1b6 | 1038 | /* |
6f4b7663 RL |
1039 | * Cast away the const. This is |
1040 | * read only so should be safe | |
89abd1b6 | 1041 | */ |
8b6ffd40 | 1042 | (char *)mdname, 0); |
89abd1b6 | 1043 | if (mdprops != NULL) { |
6f4b7663 RL |
1044 | *p++ = |
1045 | OSSL_PARAM_construct_utf8_string(OSSL_PKEY_PARAM_MGF1_PROPERTIES, | |
1046 | /* | |
1047 | * Cast away the const. This is | |
1048 | * read only so should be safe | |
1049 | */ | |
1050 | (char *)mdprops, 0); | |
89abd1b6 MC |
1051 | } |
1052 | *p++ = OSSL_PARAM_construct_end(); | |
1053 | ||
1054 | return EVP_PKEY_CTX_set_params(ctx, rsa_params); | |
1055 | } | |
1056 | ||
1057 | int EVP_PKEY_CTX_get_rsa_mgf1_md_name(EVP_PKEY_CTX *ctx, char *name, | |
1058 | size_t namelen) | |
1059 | { | |
1060 | OSSL_PARAM rsa_params[2], *p = rsa_params; | |
1061 | ||
1062 | if (ctx == NULL | |
1063 | || (!EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx) | |
1064 | && !EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx))) { | |
1065 | ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED); | |
1066 | /* Uses the same return values as EVP_PKEY_CTX_ctrl */ | |
1067 | return -2; | |
1068 | } | |
1069 | ||
1070 | /* If key type not RSA or RSA-PSS return error */ | |
1071 | if (ctx->pmeth != NULL | |
1072 | && ctx->pmeth->pkey_id != EVP_PKEY_RSA | |
1073 | && ctx->pmeth->pkey_id != EVP_PKEY_RSA_PSS) | |
1074 | return -1; | |
1075 | ||
6f4b7663 | 1076 | *p++ = OSSL_PARAM_construct_utf8_string(OSSL_PKEY_PARAM_MGF1_DIGEST, |
89abd1b6 MC |
1077 | name, namelen); |
1078 | *p++ = OSSL_PARAM_construct_end(); | |
1079 | ||
1080 | if (!EVP_PKEY_CTX_get_params(ctx, rsa_params)) | |
1081 | return -1; | |
1082 | ||
1083 | return 1; | |
1084 | } | |
1085 | ||
1086 | int EVP_PKEY_CTX_get_rsa_mgf1_md(EVP_PKEY_CTX *ctx, const EVP_MD **md) | |
1087 | { | |
1088 | /* 80 should be big enough */ | |
1089 | char name[80] = ""; | |
1090 | ||
1091 | if (ctx == NULL | |
1092 | || (!EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx) | |
1093 | && !EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx))) { | |
1094 | ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED); | |
1095 | /* Uses the same return values as EVP_PKEY_CTX_ctrl */ | |
1096 | return -2; | |
1097 | } | |
1098 | ||
1099 | /* If key type not RSA or RSA-PSS return error */ | |
1100 | if (ctx->pmeth != NULL | |
1101 | && ctx->pmeth->pkey_id != EVP_PKEY_RSA | |
1102 | && ctx->pmeth->pkey_id != EVP_PKEY_RSA_PSS) | |
1103 | return -1; | |
1104 | ||
1105 | /* TODO(3.0): Remove this eventually when no more legacy */ | |
1106 | if ((EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx) | |
1107 | && ctx->op.ciph.ciphprovctx == NULL) | |
1108 | || (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx) | |
1109 | && ctx->op.sig.sigprovctx == NULL)) | |
1110 | return EVP_PKEY_CTX_ctrl(ctx, -1, | |
1111 | EVP_PKEY_OP_TYPE_SIG | EVP_PKEY_OP_TYPE_CRYPT, | |
1112 | EVP_PKEY_CTRL_GET_RSA_MGF1_MD, 0, (void *)md); | |
1113 | ||
1114 | if (EVP_PKEY_CTX_get_rsa_mgf1_md_name(ctx, name, sizeof(name)) <= 0) | |
1115 | return -1; | |
1116 | ||
1117 | /* May be NULL meaning "unknown" */ | |
1118 | *md = EVP_get_digestbyname(name); | |
1119 | ||
1120 | return 1; | |
1121 | } | |
1122 | ||
1123 | int EVP_PKEY_CTX_set0_rsa_oaep_label(EVP_PKEY_CTX *ctx, void *label, int llen) | |
1124 | { | |
1125 | OSSL_PARAM rsa_params[2], *p = rsa_params; | |
1126 | ||
1127 | if (ctx == NULL || !EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)) { | |
1128 | ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED); | |
1129 | /* Uses the same return values as EVP_PKEY_CTX_ctrl */ | |
1130 | return -2; | |
1131 | } | |
1132 | ||
1133 | /* If key type not RSA return error */ | |
1134 | if (ctx->pmeth != NULL && ctx->pmeth->pkey_id != EVP_PKEY_RSA) | |
1135 | return -1; | |
1136 | ||
1137 | /* TODO(3.0): Remove this eventually when no more legacy */ | |
1138 | if (ctx->op.ciph.ciphprovctx == NULL) | |
1139 | return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_TYPE_CRYPT, | |
1140 | EVP_PKEY_CTRL_RSA_OAEP_LABEL, llen, | |
1141 | (void *)label); | |
1142 | ||
1143 | *p++ = OSSL_PARAM_construct_octet_string(OSSL_ASYM_CIPHER_PARAM_OAEP_LABEL, | |
6f4b7663 RL |
1144 | /* |
1145 | * Cast away the const. This is | |
1146 | * read only so should be safe | |
1147 | */ | |
1148 | (void *)label, | |
1149 | (size_t)llen); | |
89abd1b6 MC |
1150 | *p++ = OSSL_PARAM_construct_end(); |
1151 | ||
1152 | if (!EVP_PKEY_CTX_set_params(ctx, rsa_params)) | |
1153 | return 0; | |
1154 | ||
1155 | OPENSSL_free(label); | |
1156 | return 1; | |
1157 | } | |
1158 | ||
1159 | int EVP_PKEY_CTX_get0_rsa_oaep_label(EVP_PKEY_CTX *ctx, unsigned char **label) | |
1160 | { | |
1161 | OSSL_PARAM rsa_params[3], *p = rsa_params; | |
1162 | size_t labellen; | |
1163 | ||
1164 | if (ctx == NULL || !EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)) { | |
1165 | ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED); | |
1166 | /* Uses the same return values as EVP_PKEY_CTX_ctrl */ | |
1167 | return -2; | |
1168 | } | |
1169 | ||
1170 | /* If key type not RSA return error */ | |
1171 | if (ctx->pmeth != NULL && ctx->pmeth->pkey_id != EVP_PKEY_RSA) | |
1172 | return -1; | |
1173 | ||
1174 | /* TODO(3.0): Remove this eventually when no more legacy */ | |
1175 | if (ctx->op.ciph.ciphprovctx == NULL) | |
1176 | return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_TYPE_CRYPT, | |
1177 | EVP_PKEY_CTRL_GET_RSA_OAEP_LABEL, 0, | |
1178 | (void *)label); | |
1179 | ||
1180 | *p++ = OSSL_PARAM_construct_octet_ptr(OSSL_ASYM_CIPHER_PARAM_OAEP_LABEL, | |
1181 | (void **)label, 0); | |
1182 | *p++ = OSSL_PARAM_construct_size_t(OSSL_ASYM_CIPHER_PARAM_OAEP_LABEL_LEN, | |
1183 | &labellen); | |
1184 | *p++ = OSSL_PARAM_construct_end(); | |
1185 | ||
1186 | if (!EVP_PKEY_CTX_get_params(ctx, rsa_params)) | |
1187 | return -1; | |
1188 | ||
1189 | if (labellen > INT_MAX) | |
1190 | return -1; | |
1191 | ||
1192 | return (int)labellen; | |
1193 | } | |
6f4b7663 RL |
1194 | |
1195 | int EVP_PKEY_CTX_set_rsa_pss_saltlen(EVP_PKEY_CTX *ctx, int saltlen) | |
1196 | { | |
1197 | OSSL_PARAM pad_params[2], *p = pad_params; | |
1198 | ||
1199 | if (ctx == NULL) { | |
1200 | ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED); | |
1201 | /* Uses the same return values as EVP_PKEY_CTX_ctrl */ | |
1202 | return -2; | |
1203 | } | |
1204 | ||
1205 | /* If key type not RSA or RSA-PSS return error */ | |
1206 | if (ctx->pmeth != NULL | |
1207 | && ctx->pmeth->pkey_id != EVP_PKEY_RSA | |
1208 | && ctx->pmeth->pkey_id != EVP_PKEY_RSA_PSS) | |
1209 | return -1; | |
1210 | ||
1211 | /* TODO(3.0): Remove this eventually when no more legacy */ | |
1212 | if (!EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx) | |
1213 | || ctx->op.sig.sigprovctx == NULL) | |
1214 | return EVP_PKEY_CTX_ctrl(ctx, -1, -1, EVP_PKEY_CTRL_RSA_PSS_SALTLEN, | |
1215 | saltlen, NULL); | |
1216 | ||
1217 | *p++ = | |
1218 | OSSL_PARAM_construct_int(OSSL_SIGNATURE_PARAM_PSS_SALTLEN, &saltlen); | |
1219 | *p++ = OSSL_PARAM_construct_end(); | |
1220 | ||
1221 | return EVP_PKEY_CTX_set_params(ctx, pad_params); | |
1222 | } | |
1223 | ||
1224 | int EVP_PKEY_CTX_get_rsa_pss_saltlen(EVP_PKEY_CTX *ctx, int *saltlen) | |
1225 | { | |
1226 | OSSL_PARAM pad_params[2], *p = pad_params; | |
1227 | ||
1228 | if (ctx == NULL || saltlen == NULL) { | |
1229 | ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED); | |
1230 | /* Uses the same return values as EVP_PKEY_CTX_ctrl */ | |
1231 | return -2; | |
1232 | } | |
1233 | ||
1234 | /* If key type not RSA or RSA-PSS return error */ | |
1235 | if (ctx->pmeth != NULL | |
1236 | && ctx->pmeth->pkey_id != EVP_PKEY_RSA | |
1237 | && ctx->pmeth->pkey_id != EVP_PKEY_RSA_PSS) | |
1238 | return -1; | |
1239 | ||
1240 | /* TODO(3.0): Remove this eventually when no more legacy */ | |
1241 | if (!EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx) | |
1242 | || ctx->op.sig.sigprovctx == NULL) | |
1243 | return EVP_PKEY_CTX_ctrl(ctx, -1, -1, | |
1244 | EVP_PKEY_CTRL_GET_RSA_PSS_SALTLEN, | |
1245 | 0, saltlen); | |
1246 | ||
1247 | *p++ = | |
1248 | OSSL_PARAM_construct_int(OSSL_SIGNATURE_PARAM_PSS_SALTLEN, saltlen); | |
1249 | *p++ = OSSL_PARAM_construct_end(); | |
1250 | ||
1251 | if (!EVP_PKEY_CTX_get_params(ctx, pad_params)) | |
1252 | return 0; | |
1253 | ||
1254 | return 1; | |
1255 | ||
1256 | } | |
afb638f1 | 1257 | #endif |