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2039c421 | 1 | /* |
33388b44 | 2 | * Copyright 1995-2020 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" |
110bff61 | 23 | #include "openssl/param_build.h" |
25f2138b | 24 | #include "crypto/bn.h" |
25f2138b | 25 | #include "crypto/evp.h" |
c3a4fa4c | 26 | #include "crypto/rsa.h" |
55f02cb6 | 27 | #include "crypto/security_bits.h" |
706457b7 | 28 | #include "rsa_local.h" |
d02b48c6 | 29 | |
afb638f1 MC |
30 | static RSA *rsa_new_intern(ENGINE *engine, OPENSSL_CTX *libctx); |
31 | ||
f844f9eb | 32 | #ifndef FIPS_MODULE |
6b691a5c | 33 | RSA *RSA_new(void) |
0f113f3e | 34 | { |
afb638f1 | 35 | return rsa_new_intern(NULL, NULL); |
0f113f3e | 36 | } |
ce8b2574 | 37 | |
29c1f061 | 38 | const RSA_METHOD *RSA_get_method(const RSA *rsa) |
0f113f3e MC |
39 | { |
40 | return rsa->meth; | |
41 | } | |
cb78486d GT |
42 | |
43 | int RSA_set_method(RSA *rsa, const RSA_METHOD *meth) | |
0f113f3e MC |
44 | { |
45 | /* | |
46 | * NB: The caller is specifically setting a method, so it's not up to us | |
47 | * to deal with which ENGINE it comes from. | |
48 | */ | |
49 | const RSA_METHOD *mtmp; | |
50 | mtmp = rsa->meth; | |
51 | if (mtmp->finish) | |
52 | mtmp->finish(rsa); | |
0b13e9f0 | 53 | #ifndef OPENSSL_NO_ENGINE |
7c96dbcd RS |
54 | ENGINE_finish(rsa->engine); |
55 | rsa->engine = NULL; | |
0b13e9f0 | 56 | #endif |
0f113f3e MC |
57 | rsa->meth = meth; |
58 | if (meth->init) | |
59 | meth->init(rsa); | |
60 | return 1; | |
61 | } | |
ce8b2574 | 62 | |
5270e702 | 63 | RSA *RSA_new_method(ENGINE *engine) |
afb638f1 MC |
64 | { |
65 | return rsa_new_intern(engine, NULL); | |
66 | } | |
67 | #endif | |
68 | ||
69 | RSA *rsa_new_with_ctx(OPENSSL_CTX *libctx) | |
70 | { | |
71 | return rsa_new_intern(NULL, libctx); | |
72 | } | |
73 | ||
74 | static RSA *rsa_new_intern(ENGINE *engine, OPENSSL_CTX *libctx) | |
0f113f3e | 75 | { |
11ed851d | 76 | RSA *ret = OPENSSL_zalloc(sizeof(*ret)); |
d02b48c6 | 77 | |
0f113f3e | 78 | if (ret == NULL) { |
afb638f1 | 79 | RSAerr(0, ERR_R_MALLOC_FAILURE); |
0f113f3e MC |
80 | return NULL; |
81 | } | |
d02b48c6 | 82 | |
11ed851d F |
83 | ret->references = 1; |
84 | ret->lock = CRYPTO_THREAD_lock_new(); | |
85 | if (ret->lock == NULL) { | |
afb638f1 | 86 | RSAerr(0, ERR_R_MALLOC_FAILURE); |
11ed851d F |
87 | OPENSSL_free(ret); |
88 | return NULL; | |
89 | } | |
90 | ||
afb638f1 | 91 | ret->libctx = libctx; |
0f113f3e | 92 | ret->meth = RSA_get_default_method(); |
f844f9eb | 93 | #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE) |
11ed851d | 94 | ret->flags = ret->meth->flags & ~RSA_FLAG_NON_FIPS_ALLOW; |
0f113f3e MC |
95 | if (engine) { |
96 | if (!ENGINE_init(engine)) { | |
afb638f1 | 97 | RSAerr(0, ERR_R_ENGINE_LIB); |
11ed851d | 98 | goto err; |
0f113f3e MC |
99 | } |
100 | ret->engine = engine; | |
90862ab4 | 101 | } else { |
0f113f3e | 102 | ret->engine = ENGINE_get_default_RSA(); |
90862ab4 | 103 | } |
0f113f3e MC |
104 | if (ret->engine) { |
105 | ret->meth = ENGINE_get_RSA(ret->engine); | |
7c96dbcd | 106 | if (ret->meth == NULL) { |
afb638f1 | 107 | RSAerr(0, ERR_R_ENGINE_LIB); |
11ed851d | 108 | goto err; |
0f113f3e MC |
109 | } |
110 | } | |
0b13e9f0 | 111 | #endif |
0c9de428 | 112 | |
0f113f3e | 113 | ret->flags = ret->meth->flags & ~RSA_FLAG_NON_FIPS_ALLOW; |
f844f9eb | 114 | #ifndef FIPS_MODULE |
0f113f3e | 115 | if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_RSA, ret, &ret->ex_data)) { |
11ed851d | 116 | goto err; |
d188a536 | 117 | } |
a3327784 | 118 | #endif |
d188a536 AG |
119 | |
120 | if ((ret->meth->init != NULL) && !ret->meth->init(ret)) { | |
afb638f1 | 121 | RSAerr(0, ERR_R_INIT_FAIL); |
11ed851d | 122 | goto err; |
0f113f3e | 123 | } |
d188a536 AG |
124 | |
125 | return ret; | |
11ed851d | 126 | |
544648a8 | 127 | err: |
11ed851d F |
128 | RSA_free(ret); |
129 | return NULL; | |
0f113f3e | 130 | } |
d02b48c6 | 131 | |
6b691a5c | 132 | void RSA_free(RSA *r) |
0f113f3e MC |
133 | { |
134 | int i; | |
d02b48c6 | 135 | |
0f113f3e MC |
136 | if (r == NULL) |
137 | return; | |
d02b48c6 | 138 | |
2f545ae4 | 139 | CRYPTO_DOWN_REF(&r->references, &i, r->lock); |
f3f1cf84 | 140 | REF_PRINT_COUNT("RSA", r); |
0f113f3e MC |
141 | if (i > 0) |
142 | return; | |
f3f1cf84 | 143 | REF_ASSERT_ISNT(i < 0); |
d02b48c6 | 144 | |
0c5d725e | 145 | if (r->meth != NULL && r->meth->finish != NULL) |
0f113f3e | 146 | r->meth->finish(r); |
f844f9eb | 147 | #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE) |
412bafdc | 148 | ENGINE_finish(r->engine); |
0b13e9f0 | 149 | #endif |
d02b48c6 | 150 | |
f844f9eb | 151 | #ifndef FIPS_MODULE |
0f113f3e | 152 | CRYPTO_free_ex_data(CRYPTO_EX_INDEX_RSA, r, &r->ex_data); |
a3327784 | 153 | #endif |
7abe8305 | 154 | |
d188a536 AG |
155 | CRYPTO_THREAD_lock_free(r->lock); |
156 | ||
c033101d MB |
157 | BN_free(r->n); |
158 | BN_free(r->e); | |
23a1d5e9 RS |
159 | BN_clear_free(r->d); |
160 | BN_clear_free(r->p); | |
161 | BN_clear_free(r->q); | |
162 | BN_clear_free(r->dmp1); | |
163 | BN_clear_free(r->dmq1); | |
164 | BN_clear_free(r->iqmp); | |
4f2271d5 SL |
165 | |
166 | #if defined(FIPS_MODULE) && !defined(OPENSSL_NO_ACVP_TESTS) | |
167 | rsa_acvp_test_free(r->acvp_test); | |
168 | #endif | |
169 | ||
f844f9eb | 170 | #ifndef FIPS_MODULE |
d771441d | 171 | RSA_PSS_PARAMS_free(r->pss); |
665d899f | 172 | sk_RSA_PRIME_INFO_pop_free(r->prime_infos, rsa_multip_info_free); |
afb638f1 | 173 | #endif |
23a1d5e9 RS |
174 | BN_BLINDING_free(r->blinding); |
175 | BN_BLINDING_free(r->mt_blinding); | |
4c42ebd2 | 176 | OPENSSL_free(r->bignum_data); |
0f113f3e MC |
177 | OPENSSL_free(r); |
178 | } | |
d02b48c6 | 179 | |
6ac4e8bd | 180 | int RSA_up_ref(RSA *r) |
0f113f3e | 181 | { |
d188a536 AG |
182 | int i; |
183 | ||
2f545ae4 | 184 | if (CRYPTO_UP_REF(&r->references, &i, r->lock) <= 0) |
d188a536 | 185 | return 0; |
f3f1cf84 RS |
186 | |
187 | REF_PRINT_COUNT("RSA", r); | |
188 | REF_ASSERT_ISNT(i < 2); | |
8686c474 | 189 | return i > 1 ? 1 : 0; |
0f113f3e | 190 | } |
5cbc2e8b | 191 | |
8a758e96 RL |
192 | OPENSSL_CTX *rsa_get0_libctx(RSA *r) |
193 | { | |
194 | return r->libctx; | |
195 | } | |
196 | ||
f844f9eb | 197 | #ifndef FIPS_MODULE |
dd9d233e | 198 | int RSA_set_ex_data(RSA *r, int idx, void *arg) |
0f113f3e | 199 | { |
8686c474 | 200 | return CRYPTO_set_ex_data(&r->ex_data, idx, arg); |
0f113f3e | 201 | } |
58964a49 | 202 | |
29c1f061 | 203 | void *RSA_get_ex_data(const RSA *r, int idx) |
0f113f3e | 204 | { |
8686c474 | 205 | return CRYPTO_get_ex_data(&r->ex_data, idx); |
0f113f3e | 206 | } |
a3327784 | 207 | #endif |
58964a49 | 208 | |
97b0b713 P |
209 | /* |
210 | * Define a scaling constant for our fixed point arithmetic. | |
211 | * This value must be a power of two because the base two logarithm code | |
212 | * makes this assumption. The exponent must also be a multiple of three so | |
213 | * that the scale factor has an exact cube root. Finally, the scale factor | |
214 | * should not be so large that a multiplication of two scaled numbers | |
215 | * overflows a 64 bit unsigned integer. | |
216 | */ | |
217 | static const unsigned int scale = 1 << 18; | |
218 | static const unsigned int cbrt_scale = 1 << (2 * 18 / 3); | |
219 | ||
220 | /* Define some constants, none exceed 32 bits */ | |
221 | static const unsigned int log_2 = 0x02c5c8; /* scale * log(2) */ | |
222 | static const unsigned int log_e = 0x05c551; /* scale * log2(M_E) */ | |
223 | static const unsigned int c1_923 = 0x07b126; /* scale * 1.923 */ | |
224 | static const unsigned int c4_690 = 0x12c28f; /* scale * 4.690 */ | |
225 | ||
226 | /* | |
2beb004b | 227 | * Multiply two scaled integers together and rescale the result. |
97b0b713 P |
228 | */ |
229 | static ossl_inline uint64_t mul2(uint64_t a, uint64_t b) | |
230 | { | |
231 | return a * b / scale; | |
232 | } | |
233 | ||
234 | /* | |
235 | * Calculate the cube root of a 64 bit scaled integer. | |
236 | * Although the cube root of a 64 bit number does fit into a 32 bit unsigned | |
237 | * integer, this is not guaranteed after scaling, so this function has a | |
238 | * 64 bit return. This uses the shifting nth root algorithm with some | |
239 | * algebraic simplifications. | |
240 | */ | |
241 | static uint64_t icbrt64(uint64_t x) | |
242 | { | |
243 | uint64_t r = 0; | |
244 | uint64_t b; | |
245 | int s; | |
246 | ||
247 | for (s = 63; s >= 0; s -= 3) { | |
248 | r <<= 1; | |
249 | b = 3 * r * (r + 1) + 1; | |
250 | if ((x >> s) >= b) { | |
251 | x -= b << s; | |
252 | r++; | |
253 | } | |
254 | } | |
255 | return r * cbrt_scale; | |
256 | } | |
257 | ||
258 | /* | |
259 | * Calculate the natural logarithm of a 64 bit scaled integer. | |
260 | * This is done by calculating a base two logarithm and scaling. | |
261 | * The maximum logarithm (base 2) is 64 and this reduces base e, so | |
262 | * a 32 bit result should not overflow. The argument passed must be | |
263 | * greater than unity so we don't need to handle negative results. | |
264 | */ | |
265 | static uint32_t ilog_e(uint64_t v) | |
266 | { | |
267 | uint32_t i, r = 0; | |
268 | ||
269 | /* | |
270 | * Scale down the value into the range 1 .. 2. | |
271 | * | |
272 | * If fractional numbers need to be processed, another loop needs | |
273 | * to go here that checks v < scale and if so multiplies it by 2 and | |
274 | * reduces r by scale. This also means making r signed. | |
275 | */ | |
276 | while (v >= 2 * scale) { | |
277 | v >>= 1; | |
278 | r += scale; | |
279 | } | |
280 | for (i = scale / 2; i != 0; i /= 2) { | |
281 | v = mul2(v, v); | |
282 | if (v >= 2 * scale) { | |
283 | v >>= 1; | |
284 | r += i; | |
285 | } | |
286 | } | |
287 | r = (r * (uint64_t)scale) / log_e; | |
288 | return r; | |
289 | } | |
290 | ||
291 | /* | |
292 | * NIST SP 800-56B rev 2 Appendix D: Maximum Security Strength Estimates for IFC | |
293 | * Modulus Lengths. | |
294 | * | |
55f02cb6 SL |
295 | * Note that this formula is also referred to in SP800-56A rev3 Appendix D: |
296 | * for FFC safe prime groups for modp and ffdhe. | |
297 | * After Table 25 and Table 26 it refers to | |
298 | * "The maximum security strength estimates were calculated using the formula in | |
299 | * Section 7.5 of the FIPS 140 IG and rounded to the nearest multiple of eight | |
300 | * bits". | |
301 | * | |
302 | * The formula is: | |
303 | * | |
97b0b713 P |
304 | * E = \frac{1.923 \sqrt[3]{nBits \cdot log_e(2)} |
305 | * \cdot(log_e(nBits \cdot log_e(2))^{2/3} - 4.69}{log_e(2)} | |
306 | * The two cube roots are merged together here. | |
307 | */ | |
55f02cb6 | 308 | uint16_t ifc_ffc_compute_security_bits(int n) |
97b0b713 P |
309 | { |
310 | uint64_t x; | |
311 | uint32_t lx; | |
312 | uint16_t y; | |
313 | ||
314 | /* Look for common values as listed in SP 800-56B rev 2 Appendix D */ | |
315 | switch (n) { | |
316 | case 2048: | |
317 | return 112; | |
318 | case 3072: | |
319 | return 128; | |
320 | case 4096: | |
321 | return 152; | |
322 | case 6144: | |
323 | return 176; | |
324 | case 8192: | |
325 | return 200; | |
326 | } | |
327 | /* | |
328 | * The first incorrect result (i.e. not accurate or off by one low) occurs | |
329 | * for n = 699668. The true value here is 1200. Instead of using this n | |
330 | * as the check threshold, the smallest n such that the correct result is | |
331 | * 1200 is used instead. | |
332 | */ | |
333 | if (n >= 687737) | |
334 | return 1200; | |
335 | if (n < 8) | |
336 | return 0; | |
337 | ||
338 | x = n * (uint64_t)log_2; | |
339 | lx = ilog_e(x); | |
340 | y = (uint16_t)((mul2(c1_923, icbrt64(mul2(mul2(x, lx), lx))) - c4_690) | |
341 | / log_2); | |
342 | return (y + 4) & ~7; | |
343 | } | |
344 | ||
55f02cb6 SL |
345 | |
346 | ||
2514fa79 | 347 | int RSA_security_bits(const RSA *rsa) |
0f113f3e | 348 | { |
0122add6 AP |
349 | int bits = BN_num_bits(rsa->n); |
350 | ||
f844f9eb | 351 | #ifndef FIPS_MODULE |
0122add6 AP |
352 | if (rsa->version == RSA_ASN1_VERSION_MULTI) { |
353 | /* This ought to mean that we have private key at hand. */ | |
354 | int ex_primes = sk_RSA_PRIME_INFO_num(rsa->prime_infos); | |
355 | ||
356 | if (ex_primes <= 0 || (ex_primes + 2) > rsa_multip_cap(bits)) | |
357 | return 0; | |
358 | } | |
afb638f1 | 359 | #endif |
55f02cb6 | 360 | return ifc_ffc_compute_security_bits(bits); |
0f113f3e | 361 | } |
9862e9aa RL |
362 | |
363 | int RSA_set0_key(RSA *r, BIGNUM *n, BIGNUM *e, BIGNUM *d) | |
364 | { | |
fd809cfd | 365 | /* If the fields n and e in r are NULL, the corresponding input |
1da12e34 RL |
366 | * parameters MUST be non-NULL for n and e. d may be |
367 | * left NULL (in case only the public key is used). | |
1da12e34 | 368 | */ |
b84e1226 MC |
369 | if ((r->n == NULL && n == NULL) |
370 | || (r->e == NULL && e == NULL)) | |
9862e9aa RL |
371 | return 0; |
372 | ||
1da12e34 RL |
373 | if (n != NULL) { |
374 | BN_free(r->n); | |
375 | r->n = n; | |
376 | } | |
377 | if (e != NULL) { | |
378 | BN_free(r->e); | |
379 | r->e = e; | |
380 | } | |
381 | if (d != NULL) { | |
c033101d | 382 | BN_clear_free(r->d); |
1da12e34 | 383 | r->d = d; |
311e903d | 384 | BN_set_flags(r->d, BN_FLG_CONSTTIME); |
1da12e34 | 385 | } |
29be6023 | 386 | r->dirty_cnt++; |
9862e9aa RL |
387 | |
388 | return 1; | |
389 | } | |
390 | ||
391 | int RSA_set0_factors(RSA *r, BIGNUM *p, BIGNUM *q) | |
392 | { | |
fd809cfd | 393 | /* If the fields p and q in r are NULL, the corresponding input |
1da12e34 | 394 | * parameters MUST be non-NULL. |
1da12e34 | 395 | */ |
b84e1226 MC |
396 | if ((r->p == NULL && p == NULL) |
397 | || (r->q == NULL && q == NULL)) | |
9862e9aa RL |
398 | return 0; |
399 | ||
1da12e34 | 400 | if (p != NULL) { |
c033101d | 401 | BN_clear_free(r->p); |
1da12e34 | 402 | r->p = p; |
311e903d | 403 | BN_set_flags(r->p, BN_FLG_CONSTTIME); |
1da12e34 RL |
404 | } |
405 | if (q != NULL) { | |
c033101d | 406 | BN_clear_free(r->q); |
1da12e34 | 407 | r->q = q; |
311e903d | 408 | BN_set_flags(r->q, BN_FLG_CONSTTIME); |
1da12e34 | 409 | } |
29be6023 | 410 | r->dirty_cnt++; |
9862e9aa RL |
411 | |
412 | return 1; | |
413 | } | |
414 | ||
415 | int RSA_set0_crt_params(RSA *r, BIGNUM *dmp1, BIGNUM *dmq1, BIGNUM *iqmp) | |
416 | { | |
fd809cfd | 417 | /* If the fields dmp1, dmq1 and iqmp in r are NULL, the corresponding input |
1da12e34 | 418 | * parameters MUST be non-NULL. |
1da12e34 | 419 | */ |
b84e1226 MC |
420 | if ((r->dmp1 == NULL && dmp1 == NULL) |
421 | || (r->dmq1 == NULL && dmq1 == NULL) | |
422 | || (r->iqmp == NULL && iqmp == NULL)) | |
9862e9aa RL |
423 | return 0; |
424 | ||
1da12e34 | 425 | if (dmp1 != NULL) { |
c033101d | 426 | BN_clear_free(r->dmp1); |
1da12e34 | 427 | r->dmp1 = dmp1; |
311e903d | 428 | BN_set_flags(r->dmp1, BN_FLG_CONSTTIME); |
1da12e34 RL |
429 | } |
430 | if (dmq1 != NULL) { | |
c033101d | 431 | BN_clear_free(r->dmq1); |
1da12e34 | 432 | r->dmq1 = dmq1; |
311e903d | 433 | BN_set_flags(r->dmq1, BN_FLG_CONSTTIME); |
1da12e34 RL |
434 | } |
435 | if (iqmp != NULL) { | |
c033101d | 436 | BN_clear_free(r->iqmp); |
1da12e34 | 437 | r->iqmp = iqmp; |
311e903d | 438 | BN_set_flags(r->iqmp, BN_FLG_CONSTTIME); |
1da12e34 | 439 | } |
29be6023 | 440 | r->dirty_cnt++; |
9862e9aa RL |
441 | |
442 | return 1; | |
443 | } | |
444 | ||
f844f9eb | 445 | #ifndef FIPS_MODULE |
665d899f PY |
446 | /* |
447 | * Is it better to export RSA_PRIME_INFO structure | |
448 | * and related functions to let user pass a triplet? | |
449 | */ | |
450 | int RSA_set0_multi_prime_params(RSA *r, BIGNUM *primes[], BIGNUM *exps[], | |
451 | BIGNUM *coeffs[], int pnum) | |
452 | { | |
453 | STACK_OF(RSA_PRIME_INFO) *prime_infos, *old = NULL; | |
454 | RSA_PRIME_INFO *pinfo; | |
455 | int i; | |
456 | ||
457 | if (primes == NULL || exps == NULL || coeffs == NULL || pnum == 0) | |
458 | return 0; | |
459 | ||
460 | prime_infos = sk_RSA_PRIME_INFO_new_reserve(NULL, pnum); | |
461 | if (prime_infos == NULL) | |
462 | return 0; | |
463 | ||
464 | if (r->prime_infos != NULL) | |
465 | old = r->prime_infos; | |
466 | ||
467 | for (i = 0; i < pnum; i++) { | |
468 | pinfo = rsa_multip_info_new(); | |
469 | if (pinfo == NULL) | |
470 | goto err; | |
471 | if (primes[i] != NULL && exps[i] != NULL && coeffs[i] != NULL) { | |
d2baf88c CPG |
472 | BN_clear_free(pinfo->r); |
473 | BN_clear_free(pinfo->d); | |
474 | BN_clear_free(pinfo->t); | |
665d899f PY |
475 | pinfo->r = primes[i]; |
476 | pinfo->d = exps[i]; | |
477 | pinfo->t = coeffs[i]; | |
d2baf88c CPG |
478 | BN_set_flags(pinfo->r, BN_FLG_CONSTTIME); |
479 | BN_set_flags(pinfo->d, BN_FLG_CONSTTIME); | |
480 | BN_set_flags(pinfo->t, BN_FLG_CONSTTIME); | |
665d899f PY |
481 | } else { |
482 | rsa_multip_info_free(pinfo); | |
483 | goto err; | |
484 | } | |
485 | (void)sk_RSA_PRIME_INFO_push(prime_infos, pinfo); | |
486 | } | |
487 | ||
488 | r->prime_infos = prime_infos; | |
489 | ||
490 | if (!rsa_multip_calc_product(r)) { | |
491 | r->prime_infos = old; | |
492 | goto err; | |
493 | } | |
494 | ||
495 | if (old != NULL) { | |
496 | /* | |
497 | * This is hard to deal with, since the old infos could | |
498 | * also be set by this function and r, d, t should not | |
499 | * be freed in that case. So currently, stay consistent | |
500 | * with other *set0* functions: just free it... | |
501 | */ | |
502 | sk_RSA_PRIME_INFO_pop_free(old, rsa_multip_info_free); | |
503 | } | |
504 | ||
505 | r->version = RSA_ASN1_VERSION_MULTI; | |
29be6023 | 506 | r->dirty_cnt++; |
665d899f PY |
507 | |
508 | return 1; | |
509 | err: | |
510 | /* r, d, t should not be freed */ | |
511 | sk_RSA_PRIME_INFO_pop_free(prime_infos, rsa_multip_info_free_ex); | |
512 | return 0; | |
513 | } | |
afb638f1 | 514 | #endif |
665d899f | 515 | |
fd809cfd RL |
516 | void RSA_get0_key(const RSA *r, |
517 | const BIGNUM **n, const BIGNUM **e, const BIGNUM **d) | |
9862e9aa RL |
518 | { |
519 | if (n != NULL) | |
520 | *n = r->n; | |
521 | if (e != NULL) | |
522 | *e = r->e; | |
523 | if (d != NULL) | |
524 | *d = r->d; | |
525 | } | |
526 | ||
fd809cfd | 527 | void RSA_get0_factors(const RSA *r, const BIGNUM **p, const BIGNUM **q) |
9862e9aa RL |
528 | { |
529 | if (p != NULL) | |
530 | *p = r->p; | |
531 | if (q != NULL) | |
532 | *q = r->q; | |
533 | } | |
534 | ||
f844f9eb | 535 | #ifndef FIPS_MODULE |
665d899f PY |
536 | int RSA_get_multi_prime_extra_count(const RSA *r) |
537 | { | |
538 | int pnum; | |
539 | ||
540 | pnum = sk_RSA_PRIME_INFO_num(r->prime_infos); | |
541 | if (pnum <= 0) | |
542 | pnum = 0; | |
543 | return pnum; | |
544 | } | |
545 | ||
546 | int RSA_get0_multi_prime_factors(const RSA *r, const BIGNUM *primes[]) | |
547 | { | |
548 | int pnum, i; | |
549 | RSA_PRIME_INFO *pinfo; | |
550 | ||
551 | if ((pnum = RSA_get_multi_prime_extra_count(r)) == 0) | |
552 | return 0; | |
553 | ||
554 | /* | |
555 | * return other primes | |
556 | * it's caller's responsibility to allocate oth_primes[pnum] | |
557 | */ | |
558 | for (i = 0; i < pnum; i++) { | |
559 | pinfo = sk_RSA_PRIME_INFO_value(r->prime_infos, i); | |
560 | primes[i] = pinfo->r; | |
561 | } | |
562 | ||
563 | return 1; | |
564 | } | |
afb638f1 | 565 | #endif |
665d899f | 566 | |
9862e9aa | 567 | void RSA_get0_crt_params(const RSA *r, |
fd809cfd RL |
568 | const BIGNUM **dmp1, const BIGNUM **dmq1, |
569 | const BIGNUM **iqmp) | |
9862e9aa RL |
570 | { |
571 | if (dmp1 != NULL) | |
572 | *dmp1 = r->dmp1; | |
573 | if (dmq1 != NULL) | |
574 | *dmq1 = r->dmq1; | |
575 | if (iqmp != NULL) | |
576 | *iqmp = r->iqmp; | |
577 | } | |
578 | ||
f844f9eb | 579 | #ifndef FIPS_MODULE |
665d899f PY |
580 | int RSA_get0_multi_prime_crt_params(const RSA *r, const BIGNUM *exps[], |
581 | const BIGNUM *coeffs[]) | |
582 | { | |
583 | int pnum; | |
584 | ||
585 | if ((pnum = RSA_get_multi_prime_extra_count(r)) == 0) | |
586 | return 0; | |
587 | ||
588 | /* return other primes */ | |
589 | if (exps != NULL || coeffs != NULL) { | |
590 | RSA_PRIME_INFO *pinfo; | |
591 | int i; | |
592 | ||
593 | /* it's the user's job to guarantee the buffer length */ | |
594 | for (i = 0; i < pnum; i++) { | |
595 | pinfo = sk_RSA_PRIME_INFO_value(r->prime_infos, i); | |
596 | if (exps != NULL) | |
597 | exps[i] = pinfo->d; | |
598 | if (coeffs != NULL) | |
599 | coeffs[i] = pinfo->t; | |
600 | } | |
601 | } | |
602 | ||
603 | return 1; | |
604 | } | |
afb638f1 | 605 | #endif |
665d899f | 606 | |
6692ff77 DMSP |
607 | const BIGNUM *RSA_get0_n(const RSA *r) |
608 | { | |
609 | return r->n; | |
610 | } | |
611 | ||
612 | const BIGNUM *RSA_get0_e(const RSA *r) | |
613 | { | |
614 | return r->e; | |
615 | } | |
616 | ||
617 | const BIGNUM *RSA_get0_d(const RSA *r) | |
618 | { | |
619 | return r->d; | |
620 | } | |
621 | ||
622 | const BIGNUM *RSA_get0_p(const RSA *r) | |
623 | { | |
624 | return r->p; | |
625 | } | |
626 | ||
627 | const BIGNUM *RSA_get0_q(const RSA *r) | |
628 | { | |
629 | return r->q; | |
630 | } | |
631 | ||
632 | const BIGNUM *RSA_get0_dmp1(const RSA *r) | |
633 | { | |
634 | return r->dmp1; | |
635 | } | |
636 | ||
637 | const BIGNUM *RSA_get0_dmq1(const RSA *r) | |
638 | { | |
639 | return r->dmq1; | |
640 | } | |
641 | ||
642 | const BIGNUM *RSA_get0_iqmp(const RSA *r) | |
643 | { | |
644 | return r->iqmp; | |
645 | } | |
646 | ||
677add38 RL |
647 | const RSA_PSS_PARAMS *RSA_get0_pss_params(const RSA *r) |
648 | { | |
15671090 RL |
649 | #ifdef FIPS_MODULE |
650 | return NULL; | |
651 | #else | |
677add38 | 652 | return r->pss; |
15671090 RL |
653 | #endif |
654 | } | |
655 | ||
656 | /* Internal */ | |
657 | RSA_PSS_PARAMS_30 *rsa_get0_pss_params_30(RSA *r) | |
658 | { | |
659 | return &r->pss_params; | |
677add38 RL |
660 | } |
661 | ||
9862e9aa RL |
662 | void RSA_clear_flags(RSA *r, int flags) |
663 | { | |
664 | r->flags &= ~flags; | |
665 | } | |
666 | ||
667 | int RSA_test_flags(const RSA *r, int flags) | |
668 | { | |
669 | return r->flags & flags; | |
670 | } | |
671 | ||
672 | void RSA_set_flags(RSA *r, int flags) | |
673 | { | |
674 | r->flags |= flags; | |
675 | } | |
676 | ||
665d899f PY |
677 | int RSA_get_version(RSA *r) |
678 | { | |
679 | /* { two-prime(0), multi(1) } */ | |
680 | return r->version; | |
681 | } | |
682 | ||
f844f9eb | 683 | #ifndef FIPS_MODULE |
e0685d24 | 684 | ENGINE *RSA_get0_engine(const RSA *r) |
9862e9aa RL |
685 | { |
686 | return r->engine; | |
687 | } | |
e5e04ee3 DSH |
688 | |
689 | int RSA_pkey_ctx_ctrl(EVP_PKEY_CTX *ctx, int optype, int cmd, int p1, void *p2) | |
690 | { | |
691 | /* If key type not RSA or RSA-PSS return error */ | |
692 | if (ctx != NULL && ctx->pmeth != NULL | |
693 | && ctx->pmeth->pkey_id != EVP_PKEY_RSA | |
694 | && ctx->pmeth->pkey_id != EVP_PKEY_RSA_PSS) | |
695 | return -1; | |
696 | return EVP_PKEY_CTX_ctrl(ctx, -1, optype, cmd, p1, p2); | |
697 | } | |
afb638f1 | 698 | #endif |
c3a4fa4c RL |
699 | |
700 | DEFINE_STACK_OF(BIGNUM) | |
701 | ||
702 | int rsa_set0_all_params(RSA *r, const STACK_OF(BIGNUM) *primes, | |
703 | const STACK_OF(BIGNUM) *exps, | |
704 | const STACK_OF(BIGNUM) *coeffs) | |
705 | { | |
f844f9eb | 706 | #ifndef FIPS_MODULE |
c3a4fa4c | 707 | STACK_OF(RSA_PRIME_INFO) *prime_infos, *old_infos = NULL; |
afb638f1 | 708 | #endif |
c3a4fa4c RL |
709 | int pnum; |
710 | ||
711 | if (primes == NULL || exps == NULL || coeffs == NULL) | |
712 | return 0; | |
713 | ||
714 | pnum = sk_BIGNUM_num(primes); | |
715 | if (pnum < 2 | |
716 | || pnum != sk_BIGNUM_num(exps) | |
717 | || pnum != sk_BIGNUM_num(coeffs) + 1) | |
718 | return 0; | |
719 | ||
720 | if (!RSA_set0_factors(r, sk_BIGNUM_value(primes, 0), | |
721 | sk_BIGNUM_value(primes, 1)) | |
722 | || !RSA_set0_crt_params(r, sk_BIGNUM_value(exps, 0), | |
723 | sk_BIGNUM_value(exps, 1), | |
724 | sk_BIGNUM_value(coeffs, 0))) | |
725 | return 0; | |
726 | ||
f844f9eb | 727 | #ifndef FIPS_MODULE |
c3a4fa4c | 728 | old_infos = r->prime_infos; |
afb638f1 | 729 | #endif |
c3a4fa4c RL |
730 | |
731 | if (pnum > 2) { | |
f844f9eb | 732 | #ifndef FIPS_MODULE |
c3a4fa4c RL |
733 | int i; |
734 | ||
735 | prime_infos = sk_RSA_PRIME_INFO_new_reserve(NULL, pnum); | |
736 | if (prime_infos == NULL) | |
737 | return 0; | |
738 | ||
739 | for (i = 2; i < pnum; i++) { | |
740 | BIGNUM *prime = sk_BIGNUM_value(primes, i); | |
741 | BIGNUM *exp = sk_BIGNUM_value(exps, i); | |
742 | BIGNUM *coeff = sk_BIGNUM_value(coeffs, i - 1); | |
743 | RSA_PRIME_INFO *pinfo = NULL; | |
744 | ||
745 | if (!ossl_assert(prime != NULL && exp != NULL && coeff != NULL)) | |
746 | goto err; | |
747 | ||
748 | /* Using rsa_multip_info_new() is wasteful, so allocate directly */ | |
749 | if ((pinfo = OPENSSL_zalloc(sizeof(*pinfo))) == NULL) { | |
750 | ERR_raise(ERR_LIB_RSA, ERR_R_MALLOC_FAILURE); | |
751 | goto err; | |
752 | } | |
753 | ||
754 | pinfo->r = prime; | |
755 | pinfo->d = exp; | |
756 | pinfo->t = coeff; | |
757 | BN_set_flags(pinfo->r, BN_FLG_CONSTTIME); | |
758 | BN_set_flags(pinfo->d, BN_FLG_CONSTTIME); | |
759 | BN_set_flags(pinfo->t, BN_FLG_CONSTTIME); | |
760 | (void)sk_RSA_PRIME_INFO_push(prime_infos, pinfo); | |
761 | } | |
762 | ||
763 | r->prime_infos = prime_infos; | |
764 | ||
765 | if (!rsa_multip_calc_product(r)) { | |
766 | r->prime_infos = old_infos; | |
767 | goto err; | |
768 | } | |
afb638f1 MC |
769 | #else |
770 | return 0; | |
771 | #endif | |
c3a4fa4c RL |
772 | } |
773 | ||
f844f9eb | 774 | #ifndef FIPS_MODULE |
c3a4fa4c RL |
775 | if (old_infos != NULL) { |
776 | /* | |
777 | * This is hard to deal with, since the old infos could | |
778 | * also be set by this function and r, d, t should not | |
779 | * be freed in that case. So currently, stay consistent | |
780 | * with other *set0* functions: just free it... | |
781 | */ | |
782 | sk_RSA_PRIME_INFO_pop_free(old_infos, rsa_multip_info_free); | |
783 | } | |
afb638f1 | 784 | #endif |
c3a4fa4c RL |
785 | |
786 | r->version = pnum > 2 ? RSA_ASN1_VERSION_MULTI : RSA_ASN1_VERSION_DEFAULT; | |
787 | r->dirty_cnt++; | |
788 | ||
789 | return 1; | |
f844f9eb | 790 | #ifndef FIPS_MODULE |
c3a4fa4c RL |
791 | err: |
792 | /* r, d, t should not be freed */ | |
793 | sk_RSA_PRIME_INFO_pop_free(prime_infos, rsa_multip_info_free_ex); | |
794 | return 0; | |
afb638f1 | 795 | #endif |
c3a4fa4c RL |
796 | } |
797 | ||
798 | DEFINE_SPECIAL_STACK_OF_CONST(BIGNUM_const, BIGNUM) | |
799 | ||
800 | int rsa_get0_all_params(RSA *r, STACK_OF(BIGNUM_const) *primes, | |
801 | STACK_OF(BIGNUM_const) *exps, | |
802 | STACK_OF(BIGNUM_const) *coeffs) | |
803 | { | |
f844f9eb | 804 | #ifndef FIPS_MODULE |
c3a4fa4c RL |
805 | RSA_PRIME_INFO *pinfo; |
806 | int i, pnum; | |
afb638f1 | 807 | #endif |
c3a4fa4c RL |
808 | |
809 | if (r == NULL) | |
810 | return 0; | |
811 | ||
a9127c1d RL |
812 | /* If |p| is NULL, there are no CRT parameters */ |
813 | if (RSA_get0_p(r) == NULL) | |
814 | return 1; | |
815 | ||
c3a4fa4c RL |
816 | sk_BIGNUM_const_push(primes, RSA_get0_p(r)); |
817 | sk_BIGNUM_const_push(primes, RSA_get0_q(r)); | |
818 | sk_BIGNUM_const_push(exps, RSA_get0_dmp1(r)); | |
819 | sk_BIGNUM_const_push(exps, RSA_get0_dmq1(r)); | |
820 | sk_BIGNUM_const_push(coeffs, RSA_get0_iqmp(r)); | |
afb638f1 | 821 | |
f844f9eb | 822 | #ifndef FIPS_MODULE |
afb638f1 | 823 | pnum = RSA_get_multi_prime_extra_count(r); |
c3a4fa4c RL |
824 | for (i = 0; i < pnum; i++) { |
825 | pinfo = sk_RSA_PRIME_INFO_value(r->prime_infos, i); | |
826 | sk_BIGNUM_const_push(primes, pinfo->r); | |
827 | sk_BIGNUM_const_push(exps, pinfo->d); | |
828 | sk_BIGNUM_const_push(coeffs, pinfo->t); | |
829 | } | |
afb638f1 | 830 | #endif |
c3a4fa4c RL |
831 | |
832 | return 1; | |
833 | } | |
89abd1b6 | 834 | |
f844f9eb | 835 | #ifndef FIPS_MODULE |
89abd1b6 MC |
836 | int EVP_PKEY_CTX_set_rsa_padding(EVP_PKEY_CTX *ctx, int pad_mode) |
837 | { | |
838 | OSSL_PARAM pad_params[2], *p = pad_params; | |
839 | ||
840 | if (ctx == NULL) { | |
841 | ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED); | |
842 | /* Uses the same return values as EVP_PKEY_CTX_ctrl */ | |
843 | return -2; | |
844 | } | |
845 | ||
846 | /* If key type not RSA or RSA-PSS return error */ | |
847 | if (ctx->pmeth != NULL | |
848 | && ctx->pmeth->pkey_id != EVP_PKEY_RSA | |
849 | && ctx->pmeth->pkey_id != EVP_PKEY_RSA_PSS) | |
850 | return -1; | |
851 | ||
852 | /* TODO(3.0): Remove this eventually when no more legacy */ | |
6f4b7663 RL |
853 | if ((!EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx) |
854 | || ctx->op.ciph.ciphprovctx == NULL) | |
855 | && (!EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx) | |
856 | || ctx->op.sig.sigprovctx == NULL)) | |
89abd1b6 MC |
857 | return EVP_PKEY_CTX_ctrl(ctx, -1, -1, EVP_PKEY_CTRL_RSA_PADDING, |
858 | pad_mode, NULL); | |
859 | ||
6f4b7663 | 860 | *p++ = OSSL_PARAM_construct_int(OSSL_PKEY_PARAM_PAD_MODE, &pad_mode); |
89abd1b6 MC |
861 | *p++ = OSSL_PARAM_construct_end(); |
862 | ||
863 | return EVP_PKEY_CTX_set_params(ctx, pad_params); | |
864 | } | |
865 | ||
866 | int EVP_PKEY_CTX_get_rsa_padding(EVP_PKEY_CTX *ctx, int *pad_mode) | |
867 | { | |
868 | OSSL_PARAM pad_params[2], *p = pad_params; | |
869 | ||
870 | if (ctx == NULL || pad_mode == NULL) { | |
871 | ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED); | |
872 | /* Uses the same return values as EVP_PKEY_CTX_ctrl */ | |
873 | return -2; | |
874 | } | |
875 | ||
876 | /* If key type not RSA or RSA-PSS return error */ | |
877 | if (ctx->pmeth != NULL | |
878 | && ctx->pmeth->pkey_id != EVP_PKEY_RSA | |
879 | && ctx->pmeth->pkey_id != EVP_PKEY_RSA_PSS) | |
880 | return -1; | |
881 | ||
882 | /* TODO(3.0): Remove this eventually when no more legacy */ | |
6f4b7663 RL |
883 | if ((!EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx) |
884 | || ctx->op.ciph.ciphprovctx == NULL) | |
885 | && (!EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx) | |
886 | || ctx->op.sig.sigprovctx == NULL)) | |
89abd1b6 MC |
887 | return EVP_PKEY_CTX_ctrl(ctx, -1, -1, EVP_PKEY_CTRL_GET_RSA_PADDING, 0, |
888 | pad_mode); | |
889 | ||
6f4b7663 | 890 | *p++ = OSSL_PARAM_construct_int(OSSL_PKEY_PARAM_PAD_MODE, pad_mode); |
89abd1b6 MC |
891 | *p++ = OSSL_PARAM_construct_end(); |
892 | ||
893 | if (!EVP_PKEY_CTX_get_params(ctx, pad_params)) | |
894 | return 0; | |
895 | ||
896 | return 1; | |
897 | ||
898 | } | |
899 | ||
900 | int EVP_PKEY_CTX_set_rsa_oaep_md(EVP_PKEY_CTX *ctx, const EVP_MD *md) | |
901 | { | |
902 | const char *name; | |
903 | ||
904 | if (ctx == NULL || !EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)) { | |
905 | ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED); | |
906 | /* Uses the same return values as EVP_PKEY_CTX_ctrl */ | |
907 | return -2; | |
908 | } | |
909 | ||
910 | /* If key type not RSA return error */ | |
911 | if (ctx->pmeth != NULL && ctx->pmeth->pkey_id != EVP_PKEY_RSA) | |
912 | return -1; | |
913 | ||
914 | /* TODO(3.0): Remove this eventually when no more legacy */ | |
915 | if (ctx->op.ciph.ciphprovctx == NULL) | |
916 | return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_TYPE_CRYPT, | |
917 | EVP_PKEY_CTRL_RSA_OAEP_MD, 0, (void *)md); | |
918 | ||
919 | name = (md == NULL) ? "" : EVP_MD_name(md); | |
920 | ||
921 | return EVP_PKEY_CTX_set_rsa_oaep_md_name(ctx, name, NULL); | |
922 | } | |
923 | ||
924 | int EVP_PKEY_CTX_set_rsa_oaep_md_name(EVP_PKEY_CTX *ctx, const char *mdname, | |
925 | const char *mdprops) | |
926 | { | |
927 | OSSL_PARAM rsa_params[3], *p = rsa_params; | |
928 | ||
929 | if (ctx == NULL || !EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)) { | |
930 | ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED); | |
931 | /* Uses the same return values as EVP_PKEY_CTX_ctrl */ | |
932 | return -2; | |
933 | } | |
934 | ||
935 | /* If key type not RSA return error */ | |
936 | if (ctx->pmeth != NULL && ctx->pmeth->pkey_id != EVP_PKEY_RSA) | |
937 | return -1; | |
938 | ||
939 | ||
940 | *p++ = OSSL_PARAM_construct_utf8_string(OSSL_ASYM_CIPHER_PARAM_OAEP_DIGEST, | |
941 | /* | |
942 | * Cast away the const. This is read | |
943 | * only so should be safe | |
944 | */ | |
8b6ffd40 | 945 | (char *)mdname, 0); |
89abd1b6 MC |
946 | if (mdprops != NULL) { |
947 | *p++ = OSSL_PARAM_construct_utf8_string( | |
948 | OSSL_ASYM_CIPHER_PARAM_OAEP_DIGEST_PROPS, | |
949 | /* | |
950 | * Cast away the const. This is read | |
951 | * only so should be safe | |
952 | */ | |
8b6ffd40 | 953 | (char *)mdprops, 0); |
89abd1b6 MC |
954 | } |
955 | *p++ = OSSL_PARAM_construct_end(); | |
956 | ||
957 | return EVP_PKEY_CTX_set_params(ctx, rsa_params); | |
958 | } | |
959 | ||
960 | int EVP_PKEY_CTX_get_rsa_oaep_md_name(EVP_PKEY_CTX *ctx, char *name, | |
961 | size_t namelen) | |
962 | { | |
963 | OSSL_PARAM rsa_params[2], *p = rsa_params; | |
964 | ||
965 | if (ctx == NULL || !EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)) { | |
966 | ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED); | |
967 | /* Uses the same return values as EVP_PKEY_CTX_ctrl */ | |
968 | return -2; | |
969 | } | |
970 | ||
971 | /* If key type not RSA return error */ | |
972 | if (ctx->pmeth != NULL && ctx->pmeth->pkey_id != EVP_PKEY_RSA) | |
973 | return -1; | |
974 | ||
975 | *p++ = OSSL_PARAM_construct_utf8_string(OSSL_ASYM_CIPHER_PARAM_OAEP_DIGEST, | |
976 | name, namelen); | |
977 | *p++ = OSSL_PARAM_construct_end(); | |
978 | ||
979 | if (!EVP_PKEY_CTX_get_params(ctx, rsa_params)) | |
980 | return -1; | |
981 | ||
982 | return 1; | |
983 | } | |
984 | ||
985 | int EVP_PKEY_CTX_get_rsa_oaep_md(EVP_PKEY_CTX *ctx, const EVP_MD **md) | |
986 | { | |
987 | /* 80 should be big enough */ | |
988 | char name[80] = ""; | |
989 | ||
990 | if (ctx == NULL || md == NULL || !EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)) { | |
991 | ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED); | |
992 | /* Uses the same return values as EVP_PKEY_CTX_ctrl */ | |
993 | return -2; | |
994 | } | |
995 | ||
996 | /* If key type not RSA return error */ | |
997 | if (ctx->pmeth != NULL && ctx->pmeth->pkey_id != EVP_PKEY_RSA) | |
998 | return -1; | |
999 | ||
1000 | /* TODO(3.0): Remove this eventually when no more legacy */ | |
1001 | if (ctx->op.ciph.ciphprovctx == NULL) | |
1002 | return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_TYPE_CRYPT, | |
1003 | EVP_PKEY_CTRL_GET_RSA_OAEP_MD, 0, (void *)md); | |
1004 | ||
1005 | if (EVP_PKEY_CTX_get_rsa_oaep_md_name(ctx, name, sizeof(name)) <= 0) | |
1006 | return -1; | |
1007 | ||
1008 | /* May be NULL meaning "unknown" */ | |
1009 | *md = EVP_get_digestbyname(name); | |
1010 | ||
1011 | return 1; | |
1012 | } | |
1013 | ||
e25761b1 RL |
1014 | static int int_set_rsa_mgf1_md(EVP_PKEY_CTX *ctx, |
1015 | /* For EVP_PKEY_CTX_ctrl() */ | |
1016 | int keytype, int optype, int cmd, | |
1017 | const EVP_MD *md, | |
1018 | /* For EVP_PKEY_CTX_set_params() */ | |
1019 | const char *mdname, const char *mdprops) | |
89abd1b6 | 1020 | { |
e25761b1 | 1021 | OSSL_PARAM rsa_params[3], *p = rsa_params; |
89abd1b6 | 1022 | |
e25761b1 | 1023 | if (ctx == NULL || (ctx->operation & optype) == 0) { |
89abd1b6 MC |
1024 | ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED); |
1025 | /* Uses the same return values as EVP_PKEY_CTX_ctrl */ | |
1026 | return -2; | |
1027 | } | |
1028 | ||
1029 | /* If key type not RSA return error */ | |
1030 | if (ctx->pmeth != NULL | |
e25761b1 RL |
1031 | && (keytype == -1 |
1032 | ? (ctx->pmeth->pkey_id != EVP_PKEY_RSA | |
1033 | && ctx->pmeth->pkey_id != EVP_PKEY_RSA_PSS) | |
1034 | : ctx->pmeth->pkey_id != keytype)) | |
89abd1b6 MC |
1035 | return -1; |
1036 | ||
1037 | /* TODO(3.0): Remove this eventually when no more legacy */ | |
e25761b1 RL |
1038 | if (cmd != -1) { |
1039 | if ((EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx) | |
1040 | && ctx->op.ciph.ciphprovctx == NULL) | |
89abd1b6 | 1041 | || (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx) |
e25761b1 RL |
1042 | && ctx->op.sig.sigprovctx == NULL) |
1043 | || (EVP_PKEY_CTX_IS_GEN_OP(ctx) | |
1044 | && ctx->op.keymgmt.genctx == NULL)) | |
1045 | return EVP_PKEY_CTX_ctrl(ctx, keytype, optype, cmd, 0, (void *)md); | |
89abd1b6 | 1046 | |
e25761b1 | 1047 | mdname = (md == NULL) ? "" : EVP_MD_name(md); |
89abd1b6 MC |
1048 | } |
1049 | ||
89abd1b6 | 1050 | |
6f4b7663 | 1051 | *p++ = OSSL_PARAM_construct_utf8_string(OSSL_PKEY_PARAM_MGF1_DIGEST, |
89abd1b6 | 1052 | /* |
6f4b7663 RL |
1053 | * Cast away the const. This is |
1054 | * read only so should be safe | |
89abd1b6 | 1055 | */ |
8b6ffd40 | 1056 | (char *)mdname, 0); |
89abd1b6 | 1057 | if (mdprops != NULL) { |
6f4b7663 RL |
1058 | *p++ = |
1059 | OSSL_PARAM_construct_utf8_string(OSSL_PKEY_PARAM_MGF1_PROPERTIES, | |
1060 | /* | |
1061 | * Cast away the const. This is | |
1062 | * read only so should be safe | |
1063 | */ | |
1064 | (char *)mdprops, 0); | |
89abd1b6 MC |
1065 | } |
1066 | *p++ = OSSL_PARAM_construct_end(); | |
1067 | ||
1068 | return EVP_PKEY_CTX_set_params(ctx, rsa_params); | |
1069 | } | |
1070 | ||
e25761b1 RL |
1071 | int EVP_PKEY_CTX_set_rsa_mgf1_md(EVP_PKEY_CTX *ctx, const EVP_MD *md) |
1072 | { | |
1073 | return int_set_rsa_mgf1_md(ctx, -1, | |
1074 | EVP_PKEY_OP_TYPE_CRYPT | EVP_PKEY_OP_TYPE_SIG, | |
1075 | EVP_PKEY_CTRL_RSA_MGF1_MD, md, NULL, NULL); | |
1076 | } | |
1077 | ||
1078 | int EVP_PKEY_CTX_set_rsa_mgf1_md_name(EVP_PKEY_CTX *ctx, const char *mdname, | |
1079 | const char *mdprops) | |
1080 | { | |
1081 | return int_set_rsa_mgf1_md(ctx, -1, | |
1082 | EVP_PKEY_OP_TYPE_CRYPT | EVP_PKEY_OP_TYPE_SIG, | |
1083 | -1, NULL, mdname, mdprops); | |
1084 | } | |
1085 | ||
1086 | int EVP_PKEY_CTX_set_rsa_pss_keygen_mgf1_md(EVP_PKEY_CTX *ctx, const EVP_MD *md) | |
1087 | { | |
1088 | return int_set_rsa_mgf1_md(ctx, EVP_PKEY_RSA_PSS, | |
1089 | EVP_PKEY_OP_KEYGEN, EVP_PKEY_CTRL_RSA_MGF1_MD, | |
1090 | md, NULL, NULL); | |
1091 | } | |
1092 | ||
1093 | int EVP_PKEY_CTX_set_rsa_pss_keygen_mgf1_md_name(EVP_PKEY_CTX *ctx, | |
1094 | const char *mdname) | |
1095 | { | |
1096 | return int_set_rsa_mgf1_md(ctx, EVP_PKEY_RSA_PSS, | |
1097 | EVP_PKEY_OP_TYPE_CRYPT | EVP_PKEY_OP_TYPE_SIG, | |
1098 | -1, NULL, mdname, NULL); | |
1099 | } | |
1100 | ||
89abd1b6 MC |
1101 | int EVP_PKEY_CTX_get_rsa_mgf1_md_name(EVP_PKEY_CTX *ctx, char *name, |
1102 | size_t namelen) | |
1103 | { | |
1104 | OSSL_PARAM rsa_params[2], *p = rsa_params; | |
1105 | ||
1106 | if (ctx == NULL | |
1107 | || (!EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx) | |
1108 | && !EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx))) { | |
1109 | ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED); | |
1110 | /* Uses the same return values as EVP_PKEY_CTX_ctrl */ | |
1111 | return -2; | |
1112 | } | |
1113 | ||
1114 | /* If key type not RSA or RSA-PSS return error */ | |
1115 | if (ctx->pmeth != NULL | |
1116 | && ctx->pmeth->pkey_id != EVP_PKEY_RSA | |
1117 | && ctx->pmeth->pkey_id != EVP_PKEY_RSA_PSS) | |
1118 | return -1; | |
1119 | ||
6f4b7663 | 1120 | *p++ = OSSL_PARAM_construct_utf8_string(OSSL_PKEY_PARAM_MGF1_DIGEST, |
89abd1b6 MC |
1121 | name, namelen); |
1122 | *p++ = OSSL_PARAM_construct_end(); | |
1123 | ||
1124 | if (!EVP_PKEY_CTX_get_params(ctx, rsa_params)) | |
1125 | return -1; | |
1126 | ||
1127 | return 1; | |
1128 | } | |
1129 | ||
1130 | int EVP_PKEY_CTX_get_rsa_mgf1_md(EVP_PKEY_CTX *ctx, const EVP_MD **md) | |
1131 | { | |
1132 | /* 80 should be big enough */ | |
1133 | char name[80] = ""; | |
1134 | ||
1135 | if (ctx == NULL | |
1136 | || (!EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx) | |
1137 | && !EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx))) { | |
1138 | ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED); | |
1139 | /* Uses the same return values as EVP_PKEY_CTX_ctrl */ | |
1140 | return -2; | |
1141 | } | |
1142 | ||
1143 | /* If key type not RSA or RSA-PSS return error */ | |
1144 | if (ctx->pmeth != NULL | |
1145 | && ctx->pmeth->pkey_id != EVP_PKEY_RSA | |
1146 | && ctx->pmeth->pkey_id != EVP_PKEY_RSA_PSS) | |
1147 | return -1; | |
1148 | ||
1149 | /* TODO(3.0): Remove this eventually when no more legacy */ | |
1150 | if ((EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx) | |
1151 | && ctx->op.ciph.ciphprovctx == NULL) | |
1152 | || (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx) | |
1153 | && ctx->op.sig.sigprovctx == NULL)) | |
1154 | return EVP_PKEY_CTX_ctrl(ctx, -1, | |
1155 | EVP_PKEY_OP_TYPE_SIG | EVP_PKEY_OP_TYPE_CRYPT, | |
1156 | EVP_PKEY_CTRL_GET_RSA_MGF1_MD, 0, (void *)md); | |
1157 | ||
1158 | if (EVP_PKEY_CTX_get_rsa_mgf1_md_name(ctx, name, sizeof(name)) <= 0) | |
1159 | return -1; | |
1160 | ||
1161 | /* May be NULL meaning "unknown" */ | |
1162 | *md = EVP_get_digestbyname(name); | |
1163 | ||
1164 | return 1; | |
1165 | } | |
1166 | ||
1167 | int EVP_PKEY_CTX_set0_rsa_oaep_label(EVP_PKEY_CTX *ctx, void *label, int llen) | |
1168 | { | |
1169 | OSSL_PARAM rsa_params[2], *p = rsa_params; | |
1170 | ||
1171 | if (ctx == NULL || !EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)) { | |
1172 | ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED); | |
1173 | /* Uses the same return values as EVP_PKEY_CTX_ctrl */ | |
1174 | return -2; | |
1175 | } | |
1176 | ||
1177 | /* If key type not RSA return error */ | |
1178 | if (ctx->pmeth != NULL && ctx->pmeth->pkey_id != EVP_PKEY_RSA) | |
1179 | return -1; | |
1180 | ||
1181 | /* TODO(3.0): Remove this eventually when no more legacy */ | |
1182 | if (ctx->op.ciph.ciphprovctx == NULL) | |
1183 | return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_TYPE_CRYPT, | |
1184 | EVP_PKEY_CTRL_RSA_OAEP_LABEL, llen, | |
1185 | (void *)label); | |
1186 | ||
1187 | *p++ = OSSL_PARAM_construct_octet_string(OSSL_ASYM_CIPHER_PARAM_OAEP_LABEL, | |
6f4b7663 RL |
1188 | /* |
1189 | * Cast away the const. This is | |
1190 | * read only so should be safe | |
1191 | */ | |
1192 | (void *)label, | |
1193 | (size_t)llen); | |
89abd1b6 MC |
1194 | *p++ = OSSL_PARAM_construct_end(); |
1195 | ||
1196 | if (!EVP_PKEY_CTX_set_params(ctx, rsa_params)) | |
1197 | return 0; | |
1198 | ||
1199 | OPENSSL_free(label); | |
1200 | return 1; | |
1201 | } | |
1202 | ||
1203 | int EVP_PKEY_CTX_get0_rsa_oaep_label(EVP_PKEY_CTX *ctx, unsigned char **label) | |
1204 | { | |
1205 | OSSL_PARAM rsa_params[3], *p = rsa_params; | |
1206 | size_t labellen; | |
1207 | ||
1208 | if (ctx == NULL || !EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)) { | |
1209 | ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED); | |
1210 | /* Uses the same return values as EVP_PKEY_CTX_ctrl */ | |
1211 | return -2; | |
1212 | } | |
1213 | ||
1214 | /* If key type not RSA return error */ | |
1215 | if (ctx->pmeth != NULL && ctx->pmeth->pkey_id != EVP_PKEY_RSA) | |
1216 | return -1; | |
1217 | ||
1218 | /* TODO(3.0): Remove this eventually when no more legacy */ | |
1219 | if (ctx->op.ciph.ciphprovctx == NULL) | |
1220 | return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_TYPE_CRYPT, | |
1221 | EVP_PKEY_CTRL_GET_RSA_OAEP_LABEL, 0, | |
1222 | (void *)label); | |
1223 | ||
1224 | *p++ = OSSL_PARAM_construct_octet_ptr(OSSL_ASYM_CIPHER_PARAM_OAEP_LABEL, | |
1225 | (void **)label, 0); | |
1226 | *p++ = OSSL_PARAM_construct_size_t(OSSL_ASYM_CIPHER_PARAM_OAEP_LABEL_LEN, | |
1227 | &labellen); | |
1228 | *p++ = OSSL_PARAM_construct_end(); | |
1229 | ||
1230 | if (!EVP_PKEY_CTX_get_params(ctx, rsa_params)) | |
1231 | return -1; | |
1232 | ||
1233 | if (labellen > INT_MAX) | |
1234 | return -1; | |
1235 | ||
1236 | return (int)labellen; | |
1237 | } | |
6f4b7663 | 1238 | |
e25761b1 RL |
1239 | static int int_set_rsa_pss_saltlen(EVP_PKEY_CTX *ctx, int saltlen, |
1240 | int keytype, int optype) | |
6f4b7663 RL |
1241 | { |
1242 | OSSL_PARAM pad_params[2], *p = pad_params; | |
1243 | ||
e25761b1 | 1244 | if (ctx == NULL || (ctx->operation & optype) == 0) { |
6f4b7663 RL |
1245 | ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED); |
1246 | /* Uses the same return values as EVP_PKEY_CTX_ctrl */ | |
1247 | return -2; | |
1248 | } | |
1249 | ||
1250 | /* If key type not RSA or RSA-PSS return error */ | |
1251 | if (ctx->pmeth != NULL | |
e25761b1 RL |
1252 | && (keytype == -1 |
1253 | ? (ctx->pmeth->pkey_id != EVP_PKEY_RSA | |
1254 | && ctx->pmeth->pkey_id != EVP_PKEY_RSA_PSS) | |
1255 | : ctx->pmeth->pkey_id != keytype)) | |
6f4b7663 RL |
1256 | return -1; |
1257 | ||
1258 | /* TODO(3.0): Remove this eventually when no more legacy */ | |
e25761b1 RL |
1259 | if ((EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx) |
1260 | && ctx->op.sig.sigprovctx == NULL) | |
1261 | || (EVP_PKEY_CTX_IS_GEN_OP(ctx) | |
1262 | && ctx->op.keymgmt.genctx == NULL)) | |
1263 | return EVP_PKEY_CTX_ctrl(ctx, keytype, optype, | |
1264 | EVP_PKEY_CTRL_RSA_PSS_SALTLEN, | |
6f4b7663 RL |
1265 | saltlen, NULL); |
1266 | ||
1267 | *p++ = | |
1268 | OSSL_PARAM_construct_int(OSSL_SIGNATURE_PARAM_PSS_SALTLEN, &saltlen); | |
1269 | *p++ = OSSL_PARAM_construct_end(); | |
1270 | ||
1271 | return EVP_PKEY_CTX_set_params(ctx, pad_params); | |
1272 | } | |
1273 | ||
e25761b1 RL |
1274 | int EVP_PKEY_CTX_set_rsa_pss_saltlen(EVP_PKEY_CTX *ctx, int saltlen) |
1275 | { | |
1276 | return int_set_rsa_pss_saltlen(ctx, saltlen, -1, EVP_PKEY_OP_TYPE_SIG); | |
1277 | } | |
1278 | ||
1279 | int EVP_PKEY_CTX_set_rsa_pss_keygen_saltlen(EVP_PKEY_CTX *ctx, int saltlen) | |
1280 | { | |
1281 | return int_set_rsa_pss_saltlen(ctx, saltlen, EVP_PKEY_RSA_PSS, | |
1282 | EVP_PKEY_OP_KEYGEN); | |
1283 | } | |
1284 | ||
6f4b7663 RL |
1285 | int EVP_PKEY_CTX_get_rsa_pss_saltlen(EVP_PKEY_CTX *ctx, int *saltlen) |
1286 | { | |
1287 | OSSL_PARAM pad_params[2], *p = pad_params; | |
1288 | ||
1289 | if (ctx == NULL || saltlen == NULL) { | |
1290 | ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED); | |
1291 | /* Uses the same return values as EVP_PKEY_CTX_ctrl */ | |
1292 | return -2; | |
1293 | } | |
1294 | ||
1295 | /* If key type not RSA or RSA-PSS return error */ | |
1296 | if (ctx->pmeth != NULL | |
1297 | && ctx->pmeth->pkey_id != EVP_PKEY_RSA | |
1298 | && ctx->pmeth->pkey_id != EVP_PKEY_RSA_PSS) | |
1299 | return -1; | |
1300 | ||
1301 | /* TODO(3.0): Remove this eventually when no more legacy */ | |
1302 | if (!EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx) | |
1303 | || ctx->op.sig.sigprovctx == NULL) | |
1304 | return EVP_PKEY_CTX_ctrl(ctx, -1, -1, | |
1305 | EVP_PKEY_CTRL_GET_RSA_PSS_SALTLEN, | |
1306 | 0, saltlen); | |
1307 | ||
1308 | *p++ = | |
1309 | OSSL_PARAM_construct_int(OSSL_SIGNATURE_PARAM_PSS_SALTLEN, saltlen); | |
1310 | *p++ = OSSL_PARAM_construct_end(); | |
1311 | ||
1312 | if (!EVP_PKEY_CTX_get_params(ctx, pad_params)) | |
1313 | return 0; | |
1314 | ||
1315 | return 1; | |
1316 | ||
1317 | } | |
2972af10 RL |
1318 | |
1319 | int EVP_PKEY_CTX_set_rsa_keygen_bits(EVP_PKEY_CTX *ctx, int bits) | |
1320 | { | |
1321 | OSSL_PARAM params[2], *p = params; | |
1322 | size_t bits2 = bits; | |
1323 | ||
1324 | if (ctx == NULL || !EVP_PKEY_CTX_IS_GEN_OP(ctx)) { | |
1325 | ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED); | |
1326 | /* Uses the same return values as EVP_PKEY_CTX_ctrl */ | |
1327 | return -2; | |
1328 | } | |
1329 | ||
1330 | /* If key type not RSA return error */ | |
1331 | if (ctx->pmeth != NULL && ctx->pmeth->pkey_id != EVP_PKEY_RSA) | |
1332 | return -1; | |
1333 | ||
1334 | /* TODO(3.0): Remove this eventually when no more legacy */ | |
1335 | if (ctx->op.keymgmt.genctx == NULL) | |
1336 | return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_KEYGEN, | |
1337 | EVP_PKEY_CTRL_RSA_KEYGEN_BITS, bits, NULL); | |
1338 | ||
1339 | *p++ = OSSL_PARAM_construct_size_t(OSSL_PKEY_PARAM_RSA_BITS, &bits2); | |
1340 | *p++ = OSSL_PARAM_construct_end(); | |
1341 | ||
1342 | if (!EVP_PKEY_CTX_set_params(ctx, params)) | |
1343 | return 0; | |
1344 | ||
1345 | return 1; | |
1346 | } | |
1347 | ||
1348 | int EVP_PKEY_CTX_set_rsa_keygen_pubexp(EVP_PKEY_CTX *ctx, BIGNUM *pubexp) | |
1349 | { | |
6d4e6009 | 1350 | OSSL_PARAM_BLD *tmpl; |
2972af10 RL |
1351 | OSSL_PARAM *params; |
1352 | int ret; | |
1353 | ||
1354 | if (ctx == NULL || !EVP_PKEY_CTX_IS_GEN_OP(ctx)) { | |
1355 | ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED); | |
1356 | /* Uses the same return values as EVP_PKEY_CTX_ctrl */ | |
1357 | return -2; | |
1358 | } | |
1359 | ||
1360 | /* If key type not RSA return error */ | |
1361 | if (ctx->pmeth != NULL && ctx->pmeth->pkey_id != EVP_PKEY_RSA) | |
1362 | return -1; | |
1363 | ||
1364 | /* TODO(3.0): Remove this eventually when no more legacy */ | |
1365 | if (ctx->op.keymgmt.genctx == NULL) | |
1366 | return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_KEYGEN, | |
1367 | EVP_PKEY_CTRL_RSA_KEYGEN_PUBEXP, 0, pubexp); | |
1368 | ||
6d4e6009 | 1369 | if ((tmpl = OSSL_PARAM_BLD_new()) == NULL) |
2972af10 | 1370 | return 0; |
6d4e6009 P |
1371 | if (!OSSL_PARAM_BLD_push_BN(tmpl, OSSL_PKEY_PARAM_RSA_E, pubexp) |
1372 | || (params = OSSL_PARAM_BLD_to_param(tmpl)) == NULL) { | |
1373 | OSSL_PARAM_BLD_free(tmpl); | |
1374 | return 0; | |
1375 | } | |
1376 | OSSL_PARAM_BLD_free(tmpl); | |
2972af10 RL |
1377 | |
1378 | ret = EVP_PKEY_CTX_set_params(ctx, params); | |
6d4e6009 | 1379 | OSSL_PARAM_BLD_free_params(params); |
2972af10 RL |
1380 | return ret; |
1381 | } | |
1382 | ||
1383 | int EVP_PKEY_CTX_set_rsa_keygen_primes(EVP_PKEY_CTX *ctx, int primes) | |
1384 | { | |
1385 | OSSL_PARAM params[2], *p = params; | |
1386 | size_t primes2 = primes; | |
1387 | ||
1388 | if (ctx == NULL || !EVP_PKEY_CTX_IS_GEN_OP(ctx)) { | |
1389 | ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED); | |
1390 | /* Uses the same return values as EVP_PKEY_CTX_ctrl */ | |
1391 | return -2; | |
1392 | } | |
1393 | ||
1394 | /* If key type not RSA return error */ | |
1395 | if (ctx->pmeth != NULL && ctx->pmeth->pkey_id != EVP_PKEY_RSA) | |
1396 | return -1; | |
1397 | ||
1398 | /* TODO(3.0): Remove this eventually when no more legacy */ | |
1399 | if (ctx->op.keymgmt.genctx == NULL) | |
1400 | return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_KEYGEN, | |
1401 | EVP_PKEY_CTRL_RSA_KEYGEN_PRIMES, primes, | |
1402 | NULL); | |
1403 | ||
1404 | *p++ = OSSL_PARAM_construct_size_t(OSSL_PKEY_PARAM_RSA_PRIMES, &primes2); | |
1405 | *p++ = OSSL_PARAM_construct_end(); | |
1406 | ||
1407 | if (!EVP_PKEY_CTX_set_params(ctx, params)) | |
1408 | return 0; | |
1409 | ||
1410 | return 1; | |
1411 | } | |
afb638f1 | 1412 | #endif |