]>
Commit | Line | Data |
---|---|---|
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 | ||
10 | #include <stdio.h> | |
ec577822 | 11 | #include <openssl/crypto.h> |
89abd1b6 MC |
12 | #include <openssl/core_names.h> |
13 | #include <openssl/engine.h> | |
14 | #include <openssl/evp.h> | |
b39fc560 | 15 | #include "internal/cryptlib.h" |
cd420b0b | 16 | #include "internal/refcount.h" |
25f2138b | 17 | #include "crypto/bn.h" |
25f2138b | 18 | #include "crypto/evp.h" |
c3a4fa4c | 19 | #include "crypto/rsa.h" |
706457b7 | 20 | #include "rsa_local.h" |
d02b48c6 | 21 | |
afb638f1 MC |
22 | static RSA *rsa_new_intern(ENGINE *engine, OPENSSL_CTX *libctx); |
23 | ||
24 | #ifndef FIPS_MODE | |
6b691a5c | 25 | RSA *RSA_new(void) |
0f113f3e | 26 | { |
afb638f1 | 27 | return rsa_new_intern(NULL, NULL); |
0f113f3e | 28 | } |
ce8b2574 | 29 | |
29c1f061 | 30 | const RSA_METHOD *RSA_get_method(const RSA *rsa) |
0f113f3e MC |
31 | { |
32 | return rsa->meth; | |
33 | } | |
cb78486d GT |
34 | |
35 | int RSA_set_method(RSA *rsa, const RSA_METHOD *meth) | |
0f113f3e MC |
36 | { |
37 | /* | |
38 | * NB: The caller is specifically setting a method, so it's not up to us | |
39 | * to deal with which ENGINE it comes from. | |
40 | */ | |
41 | const RSA_METHOD *mtmp; | |
42 | mtmp = rsa->meth; | |
43 | if (mtmp->finish) | |
44 | mtmp->finish(rsa); | |
0b13e9f0 | 45 | #ifndef OPENSSL_NO_ENGINE |
7c96dbcd RS |
46 | ENGINE_finish(rsa->engine); |
47 | rsa->engine = NULL; | |
0b13e9f0 | 48 | #endif |
0f113f3e MC |
49 | rsa->meth = meth; |
50 | if (meth->init) | |
51 | meth->init(rsa); | |
52 | return 1; | |
53 | } | |
ce8b2574 | 54 | |
5270e702 | 55 | RSA *RSA_new_method(ENGINE *engine) |
afb638f1 MC |
56 | { |
57 | return rsa_new_intern(engine, NULL); | |
58 | } | |
59 | #endif | |
60 | ||
61 | RSA *rsa_new_with_ctx(OPENSSL_CTX *libctx) | |
62 | { | |
63 | return rsa_new_intern(NULL, libctx); | |
64 | } | |
65 | ||
66 | static RSA *rsa_new_intern(ENGINE *engine, OPENSSL_CTX *libctx) | |
0f113f3e | 67 | { |
11ed851d | 68 | RSA *ret = OPENSSL_zalloc(sizeof(*ret)); |
d02b48c6 | 69 | |
0f113f3e | 70 | if (ret == NULL) { |
afb638f1 | 71 | RSAerr(0, ERR_R_MALLOC_FAILURE); |
0f113f3e MC |
72 | return NULL; |
73 | } | |
d02b48c6 | 74 | |
11ed851d F |
75 | ret->references = 1; |
76 | ret->lock = CRYPTO_THREAD_lock_new(); | |
77 | if (ret->lock == NULL) { | |
afb638f1 | 78 | RSAerr(0, ERR_R_MALLOC_FAILURE); |
11ed851d F |
79 | OPENSSL_free(ret); |
80 | return NULL; | |
81 | } | |
82 | ||
afb638f1 | 83 | ret->libctx = libctx; |
0f113f3e | 84 | ret->meth = RSA_get_default_method(); |
afb638f1 | 85 | #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODE) |
11ed851d | 86 | ret->flags = ret->meth->flags & ~RSA_FLAG_NON_FIPS_ALLOW; |
0f113f3e MC |
87 | if (engine) { |
88 | if (!ENGINE_init(engine)) { | |
afb638f1 | 89 | RSAerr(0, ERR_R_ENGINE_LIB); |
11ed851d | 90 | goto err; |
0f113f3e MC |
91 | } |
92 | ret->engine = engine; | |
90862ab4 | 93 | } else { |
0f113f3e | 94 | ret->engine = ENGINE_get_default_RSA(); |
90862ab4 | 95 | } |
0f113f3e MC |
96 | if (ret->engine) { |
97 | ret->meth = ENGINE_get_RSA(ret->engine); | |
7c96dbcd | 98 | if (ret->meth == NULL) { |
afb638f1 | 99 | RSAerr(0, ERR_R_ENGINE_LIB); |
11ed851d | 100 | goto err; |
0f113f3e MC |
101 | } |
102 | } | |
0b13e9f0 | 103 | #endif |
0c9de428 | 104 | |
0f113f3e | 105 | ret->flags = ret->meth->flags & ~RSA_FLAG_NON_FIPS_ALLOW; |
a3327784 | 106 | #ifndef FIPS_MODE |
0f113f3e | 107 | if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_RSA, ret, &ret->ex_data)) { |
11ed851d | 108 | goto err; |
d188a536 | 109 | } |
a3327784 | 110 | #endif |
d188a536 AG |
111 | |
112 | if ((ret->meth->init != NULL) && !ret->meth->init(ret)) { | |
afb638f1 | 113 | RSAerr(0, ERR_R_INIT_FAIL); |
11ed851d | 114 | goto err; |
0f113f3e | 115 | } |
d188a536 AG |
116 | |
117 | return ret; | |
11ed851d | 118 | |
544648a8 | 119 | err: |
11ed851d F |
120 | RSA_free(ret); |
121 | return NULL; | |
0f113f3e | 122 | } |
d02b48c6 | 123 | |
6b691a5c | 124 | void RSA_free(RSA *r) |
0f113f3e MC |
125 | { |
126 | int i; | |
d02b48c6 | 127 | |
0f113f3e MC |
128 | if (r == NULL) |
129 | return; | |
d02b48c6 | 130 | |
2f545ae4 | 131 | CRYPTO_DOWN_REF(&r->references, &i, r->lock); |
f3f1cf84 | 132 | REF_PRINT_COUNT("RSA", r); |
0f113f3e MC |
133 | if (i > 0) |
134 | return; | |
f3f1cf84 | 135 | REF_ASSERT_ISNT(i < 0); |
d02b48c6 | 136 | |
0c5d725e | 137 | if (r->meth != NULL && r->meth->finish != NULL) |
0f113f3e | 138 | r->meth->finish(r); |
afb638f1 | 139 | #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODE) |
412bafdc | 140 | ENGINE_finish(r->engine); |
0b13e9f0 | 141 | #endif |
d02b48c6 | 142 | |
a3327784 | 143 | #ifndef FIPS_MODE |
0f113f3e | 144 | CRYPTO_free_ex_data(CRYPTO_EX_INDEX_RSA, r, &r->ex_data); |
a3327784 | 145 | #endif |
7abe8305 | 146 | |
d188a536 AG |
147 | CRYPTO_THREAD_lock_free(r->lock); |
148 | ||
c033101d MB |
149 | BN_free(r->n); |
150 | BN_free(r->e); | |
23a1d5e9 RS |
151 | BN_clear_free(r->d); |
152 | BN_clear_free(r->p); | |
153 | BN_clear_free(r->q); | |
154 | BN_clear_free(r->dmp1); | |
155 | BN_clear_free(r->dmq1); | |
156 | BN_clear_free(r->iqmp); | |
afb638f1 MC |
157 | /* TODO(3.0): Support PSS in FIPS_MODE */ |
158 | #ifndef FIPS_MODE | |
d771441d | 159 | RSA_PSS_PARAMS_free(r->pss); |
665d899f | 160 | sk_RSA_PRIME_INFO_pop_free(r->prime_infos, rsa_multip_info_free); |
afb638f1 | 161 | #endif |
23a1d5e9 RS |
162 | BN_BLINDING_free(r->blinding); |
163 | BN_BLINDING_free(r->mt_blinding); | |
4c42ebd2 | 164 | OPENSSL_free(r->bignum_data); |
0f113f3e MC |
165 | OPENSSL_free(r); |
166 | } | |
d02b48c6 | 167 | |
6ac4e8bd | 168 | int RSA_up_ref(RSA *r) |
0f113f3e | 169 | { |
d188a536 AG |
170 | int i; |
171 | ||
2f545ae4 | 172 | if (CRYPTO_UP_REF(&r->references, &i, r->lock) <= 0) |
d188a536 | 173 | return 0; |
f3f1cf84 RS |
174 | |
175 | REF_PRINT_COUNT("RSA", r); | |
176 | REF_ASSERT_ISNT(i < 2); | |
8686c474 | 177 | return i > 1 ? 1 : 0; |
0f113f3e | 178 | } |
5cbc2e8b | 179 | |
a3327784 | 180 | #ifndef FIPS_MODE |
dd9d233e | 181 | int RSA_set_ex_data(RSA *r, int idx, void *arg) |
0f113f3e | 182 | { |
8686c474 | 183 | return CRYPTO_set_ex_data(&r->ex_data, idx, arg); |
0f113f3e | 184 | } |
58964a49 | 185 | |
29c1f061 | 186 | void *RSA_get_ex_data(const RSA *r, int idx) |
0f113f3e | 187 | { |
8686c474 | 188 | return CRYPTO_get_ex_data(&r->ex_data, idx); |
0f113f3e | 189 | } |
a3327784 | 190 | #endif |
58964a49 | 191 | |
97b0b713 P |
192 | /* |
193 | * Define a scaling constant for our fixed point arithmetic. | |
194 | * This value must be a power of two because the base two logarithm code | |
195 | * makes this assumption. The exponent must also be a multiple of three so | |
196 | * that the scale factor has an exact cube root. Finally, the scale factor | |
197 | * should not be so large that a multiplication of two scaled numbers | |
198 | * overflows a 64 bit unsigned integer. | |
199 | */ | |
200 | static const unsigned int scale = 1 << 18; | |
201 | static const unsigned int cbrt_scale = 1 << (2 * 18 / 3); | |
202 | ||
203 | /* Define some constants, none exceed 32 bits */ | |
204 | static const unsigned int log_2 = 0x02c5c8; /* scale * log(2) */ | |
205 | static const unsigned int log_e = 0x05c551; /* scale * log2(M_E) */ | |
206 | static const unsigned int c1_923 = 0x07b126; /* scale * 1.923 */ | |
207 | static const unsigned int c4_690 = 0x12c28f; /* scale * 4.690 */ | |
208 | ||
209 | /* | |
2beb004b | 210 | * Multiply two scaled integers together and rescale the result. |
97b0b713 P |
211 | */ |
212 | static ossl_inline uint64_t mul2(uint64_t a, uint64_t b) | |
213 | { | |
214 | return a * b / scale; | |
215 | } | |
216 | ||
217 | /* | |
218 | * Calculate the cube root of a 64 bit scaled integer. | |
219 | * Although the cube root of a 64 bit number does fit into a 32 bit unsigned | |
220 | * integer, this is not guaranteed after scaling, so this function has a | |
221 | * 64 bit return. This uses the shifting nth root algorithm with some | |
222 | * algebraic simplifications. | |
223 | */ | |
224 | static uint64_t icbrt64(uint64_t x) | |
225 | { | |
226 | uint64_t r = 0; | |
227 | uint64_t b; | |
228 | int s; | |
229 | ||
230 | for (s = 63; s >= 0; s -= 3) { | |
231 | r <<= 1; | |
232 | b = 3 * r * (r + 1) + 1; | |
233 | if ((x >> s) >= b) { | |
234 | x -= b << s; | |
235 | r++; | |
236 | } | |
237 | } | |
238 | return r * cbrt_scale; | |
239 | } | |
240 | ||
241 | /* | |
242 | * Calculate the natural logarithm of a 64 bit scaled integer. | |
243 | * This is done by calculating a base two logarithm and scaling. | |
244 | * The maximum logarithm (base 2) is 64 and this reduces base e, so | |
245 | * a 32 bit result should not overflow. The argument passed must be | |
246 | * greater than unity so we don't need to handle negative results. | |
247 | */ | |
248 | static uint32_t ilog_e(uint64_t v) | |
249 | { | |
250 | uint32_t i, r = 0; | |
251 | ||
252 | /* | |
253 | * Scale down the value into the range 1 .. 2. | |
254 | * | |
255 | * If fractional numbers need to be processed, another loop needs | |
256 | * to go here that checks v < scale and if so multiplies it by 2 and | |
257 | * reduces r by scale. This also means making r signed. | |
258 | */ | |
259 | while (v >= 2 * scale) { | |
260 | v >>= 1; | |
261 | r += scale; | |
262 | } | |
263 | for (i = scale / 2; i != 0; i /= 2) { | |
264 | v = mul2(v, v); | |
265 | if (v >= 2 * scale) { | |
266 | v >>= 1; | |
267 | r += i; | |
268 | } | |
269 | } | |
270 | r = (r * (uint64_t)scale) / log_e; | |
271 | return r; | |
272 | } | |
273 | ||
274 | /* | |
275 | * NIST SP 800-56B rev 2 Appendix D: Maximum Security Strength Estimates for IFC | |
276 | * Modulus Lengths. | |
277 | * | |
278 | * E = \frac{1.923 \sqrt[3]{nBits \cdot log_e(2)} | |
279 | * \cdot(log_e(nBits \cdot log_e(2))^{2/3} - 4.69}{log_e(2)} | |
280 | * The two cube roots are merged together here. | |
281 | */ | |
8240d5fa | 282 | uint16_t rsa_compute_security_bits(int n) |
97b0b713 P |
283 | { |
284 | uint64_t x; | |
285 | uint32_t lx; | |
286 | uint16_t y; | |
287 | ||
288 | /* Look for common values as listed in SP 800-56B rev 2 Appendix D */ | |
289 | switch (n) { | |
290 | case 2048: | |
291 | return 112; | |
292 | case 3072: | |
293 | return 128; | |
294 | case 4096: | |
295 | return 152; | |
296 | case 6144: | |
297 | return 176; | |
298 | case 8192: | |
299 | return 200; | |
300 | } | |
301 | /* | |
302 | * The first incorrect result (i.e. not accurate or off by one low) occurs | |
303 | * for n = 699668. The true value here is 1200. Instead of using this n | |
304 | * as the check threshold, the smallest n such that the correct result is | |
305 | * 1200 is used instead. | |
306 | */ | |
307 | if (n >= 687737) | |
308 | return 1200; | |
309 | if (n < 8) | |
310 | return 0; | |
311 | ||
312 | x = n * (uint64_t)log_2; | |
313 | lx = ilog_e(x); | |
314 | y = (uint16_t)((mul2(c1_923, icbrt64(mul2(mul2(x, lx), lx))) - c4_690) | |
315 | / log_2); | |
316 | return (y + 4) & ~7; | |
317 | } | |
318 | ||
2514fa79 | 319 | int RSA_security_bits(const RSA *rsa) |
0f113f3e | 320 | { |
0122add6 AP |
321 | int bits = BN_num_bits(rsa->n); |
322 | ||
afb638f1 | 323 | #ifndef FIPS_MODE |
0122add6 AP |
324 | if (rsa->version == RSA_ASN1_VERSION_MULTI) { |
325 | /* This ought to mean that we have private key at hand. */ | |
326 | int ex_primes = sk_RSA_PRIME_INFO_num(rsa->prime_infos); | |
327 | ||
328 | if (ex_primes <= 0 || (ex_primes + 2) > rsa_multip_cap(bits)) | |
329 | return 0; | |
330 | } | |
afb638f1 | 331 | #endif |
97b0b713 | 332 | return rsa_compute_security_bits(bits); |
0f113f3e | 333 | } |
9862e9aa RL |
334 | |
335 | int RSA_set0_key(RSA *r, BIGNUM *n, BIGNUM *e, BIGNUM *d) | |
336 | { | |
fd809cfd | 337 | /* If the fields n and e in r are NULL, the corresponding input |
1da12e34 RL |
338 | * parameters MUST be non-NULL for n and e. d may be |
339 | * left NULL (in case only the public key is used). | |
1da12e34 | 340 | */ |
b84e1226 MC |
341 | if ((r->n == NULL && n == NULL) |
342 | || (r->e == NULL && e == NULL)) | |
9862e9aa RL |
343 | return 0; |
344 | ||
1da12e34 RL |
345 | if (n != NULL) { |
346 | BN_free(r->n); | |
347 | r->n = n; | |
348 | } | |
349 | if (e != NULL) { | |
350 | BN_free(r->e); | |
351 | r->e = e; | |
352 | } | |
353 | if (d != NULL) { | |
c033101d | 354 | BN_clear_free(r->d); |
1da12e34 | 355 | r->d = d; |
311e903d | 356 | BN_set_flags(r->d, BN_FLG_CONSTTIME); |
1da12e34 | 357 | } |
29be6023 | 358 | r->dirty_cnt++; |
9862e9aa RL |
359 | |
360 | return 1; | |
361 | } | |
362 | ||
363 | int RSA_set0_factors(RSA *r, BIGNUM *p, BIGNUM *q) | |
364 | { | |
fd809cfd | 365 | /* If the fields p and q in r are NULL, the corresponding input |
1da12e34 | 366 | * parameters MUST be non-NULL. |
1da12e34 | 367 | */ |
b84e1226 MC |
368 | if ((r->p == NULL && p == NULL) |
369 | || (r->q == NULL && q == NULL)) | |
9862e9aa RL |
370 | return 0; |
371 | ||
1da12e34 | 372 | if (p != NULL) { |
c033101d | 373 | BN_clear_free(r->p); |
1da12e34 | 374 | r->p = p; |
311e903d | 375 | BN_set_flags(r->p, BN_FLG_CONSTTIME); |
1da12e34 RL |
376 | } |
377 | if (q != NULL) { | |
c033101d | 378 | BN_clear_free(r->q); |
1da12e34 | 379 | r->q = q; |
311e903d | 380 | BN_set_flags(r->q, BN_FLG_CONSTTIME); |
1da12e34 | 381 | } |
29be6023 | 382 | r->dirty_cnt++; |
9862e9aa RL |
383 | |
384 | return 1; | |
385 | } | |
386 | ||
387 | int RSA_set0_crt_params(RSA *r, BIGNUM *dmp1, BIGNUM *dmq1, BIGNUM *iqmp) | |
388 | { | |
fd809cfd | 389 | /* If the fields dmp1, dmq1 and iqmp in r are NULL, the corresponding input |
1da12e34 | 390 | * parameters MUST be non-NULL. |
1da12e34 | 391 | */ |
b84e1226 MC |
392 | if ((r->dmp1 == NULL && dmp1 == NULL) |
393 | || (r->dmq1 == NULL && dmq1 == NULL) | |
394 | || (r->iqmp == NULL && iqmp == NULL)) | |
9862e9aa RL |
395 | return 0; |
396 | ||
1da12e34 | 397 | if (dmp1 != NULL) { |
c033101d | 398 | BN_clear_free(r->dmp1); |
1da12e34 | 399 | r->dmp1 = dmp1; |
311e903d | 400 | BN_set_flags(r->dmp1, BN_FLG_CONSTTIME); |
1da12e34 RL |
401 | } |
402 | if (dmq1 != NULL) { | |
c033101d | 403 | BN_clear_free(r->dmq1); |
1da12e34 | 404 | r->dmq1 = dmq1; |
311e903d | 405 | BN_set_flags(r->dmq1, BN_FLG_CONSTTIME); |
1da12e34 RL |
406 | } |
407 | if (iqmp != NULL) { | |
c033101d | 408 | BN_clear_free(r->iqmp); |
1da12e34 | 409 | r->iqmp = iqmp; |
311e903d | 410 | BN_set_flags(r->iqmp, BN_FLG_CONSTTIME); |
1da12e34 | 411 | } |
29be6023 | 412 | r->dirty_cnt++; |
9862e9aa RL |
413 | |
414 | return 1; | |
415 | } | |
416 | ||
afb638f1 | 417 | #ifndef FIPS_MODE |
665d899f PY |
418 | /* |
419 | * Is it better to export RSA_PRIME_INFO structure | |
420 | * and related functions to let user pass a triplet? | |
421 | */ | |
422 | int RSA_set0_multi_prime_params(RSA *r, BIGNUM *primes[], BIGNUM *exps[], | |
423 | BIGNUM *coeffs[], int pnum) | |
424 | { | |
425 | STACK_OF(RSA_PRIME_INFO) *prime_infos, *old = NULL; | |
426 | RSA_PRIME_INFO *pinfo; | |
427 | int i; | |
428 | ||
429 | if (primes == NULL || exps == NULL || coeffs == NULL || pnum == 0) | |
430 | return 0; | |
431 | ||
432 | prime_infos = sk_RSA_PRIME_INFO_new_reserve(NULL, pnum); | |
433 | if (prime_infos == NULL) | |
434 | return 0; | |
435 | ||
436 | if (r->prime_infos != NULL) | |
437 | old = r->prime_infos; | |
438 | ||
439 | for (i = 0; i < pnum; i++) { | |
440 | pinfo = rsa_multip_info_new(); | |
441 | if (pinfo == NULL) | |
442 | goto err; | |
443 | if (primes[i] != NULL && exps[i] != NULL && coeffs[i] != NULL) { | |
d2baf88c CPG |
444 | BN_clear_free(pinfo->r); |
445 | BN_clear_free(pinfo->d); | |
446 | BN_clear_free(pinfo->t); | |
665d899f PY |
447 | pinfo->r = primes[i]; |
448 | pinfo->d = exps[i]; | |
449 | pinfo->t = coeffs[i]; | |
d2baf88c CPG |
450 | BN_set_flags(pinfo->r, BN_FLG_CONSTTIME); |
451 | BN_set_flags(pinfo->d, BN_FLG_CONSTTIME); | |
452 | BN_set_flags(pinfo->t, BN_FLG_CONSTTIME); | |
665d899f PY |
453 | } else { |
454 | rsa_multip_info_free(pinfo); | |
455 | goto err; | |
456 | } | |
457 | (void)sk_RSA_PRIME_INFO_push(prime_infos, pinfo); | |
458 | } | |
459 | ||
460 | r->prime_infos = prime_infos; | |
461 | ||
462 | if (!rsa_multip_calc_product(r)) { | |
463 | r->prime_infos = old; | |
464 | goto err; | |
465 | } | |
466 | ||
467 | if (old != NULL) { | |
468 | /* | |
469 | * This is hard to deal with, since the old infos could | |
470 | * also be set by this function and r, d, t should not | |
471 | * be freed in that case. So currently, stay consistent | |
472 | * with other *set0* functions: just free it... | |
473 | */ | |
474 | sk_RSA_PRIME_INFO_pop_free(old, rsa_multip_info_free); | |
475 | } | |
476 | ||
477 | r->version = RSA_ASN1_VERSION_MULTI; | |
29be6023 | 478 | r->dirty_cnt++; |
665d899f PY |
479 | |
480 | return 1; | |
481 | err: | |
482 | /* r, d, t should not be freed */ | |
483 | sk_RSA_PRIME_INFO_pop_free(prime_infos, rsa_multip_info_free_ex); | |
484 | return 0; | |
485 | } | |
afb638f1 | 486 | #endif |
665d899f | 487 | |
fd809cfd RL |
488 | void RSA_get0_key(const RSA *r, |
489 | const BIGNUM **n, const BIGNUM **e, const BIGNUM **d) | |
9862e9aa RL |
490 | { |
491 | if (n != NULL) | |
492 | *n = r->n; | |
493 | if (e != NULL) | |
494 | *e = r->e; | |
495 | if (d != NULL) | |
496 | *d = r->d; | |
497 | } | |
498 | ||
fd809cfd | 499 | void RSA_get0_factors(const RSA *r, const BIGNUM **p, const BIGNUM **q) |
9862e9aa RL |
500 | { |
501 | if (p != NULL) | |
502 | *p = r->p; | |
503 | if (q != NULL) | |
504 | *q = r->q; | |
505 | } | |
506 | ||
afb638f1 | 507 | #ifndef FIPS_MODE |
665d899f PY |
508 | int RSA_get_multi_prime_extra_count(const RSA *r) |
509 | { | |
510 | int pnum; | |
511 | ||
512 | pnum = sk_RSA_PRIME_INFO_num(r->prime_infos); | |
513 | if (pnum <= 0) | |
514 | pnum = 0; | |
515 | return pnum; | |
516 | } | |
517 | ||
518 | int RSA_get0_multi_prime_factors(const RSA *r, const BIGNUM *primes[]) | |
519 | { | |
520 | int pnum, i; | |
521 | RSA_PRIME_INFO *pinfo; | |
522 | ||
523 | if ((pnum = RSA_get_multi_prime_extra_count(r)) == 0) | |
524 | return 0; | |
525 | ||
526 | /* | |
527 | * return other primes | |
528 | * it's caller's responsibility to allocate oth_primes[pnum] | |
529 | */ | |
530 | for (i = 0; i < pnum; i++) { | |
531 | pinfo = sk_RSA_PRIME_INFO_value(r->prime_infos, i); | |
532 | primes[i] = pinfo->r; | |
533 | } | |
534 | ||
535 | return 1; | |
536 | } | |
afb638f1 | 537 | #endif |
665d899f | 538 | |
9862e9aa | 539 | void RSA_get0_crt_params(const RSA *r, |
fd809cfd RL |
540 | const BIGNUM **dmp1, const BIGNUM **dmq1, |
541 | const BIGNUM **iqmp) | |
9862e9aa RL |
542 | { |
543 | if (dmp1 != NULL) | |
544 | *dmp1 = r->dmp1; | |
545 | if (dmq1 != NULL) | |
546 | *dmq1 = r->dmq1; | |
547 | if (iqmp != NULL) | |
548 | *iqmp = r->iqmp; | |
549 | } | |
550 | ||
afb638f1 | 551 | #ifndef FIPS_MODE |
665d899f PY |
552 | int RSA_get0_multi_prime_crt_params(const RSA *r, const BIGNUM *exps[], |
553 | const BIGNUM *coeffs[]) | |
554 | { | |
555 | int pnum; | |
556 | ||
557 | if ((pnum = RSA_get_multi_prime_extra_count(r)) == 0) | |
558 | return 0; | |
559 | ||
560 | /* return other primes */ | |
561 | if (exps != NULL || coeffs != NULL) { | |
562 | RSA_PRIME_INFO *pinfo; | |
563 | int i; | |
564 | ||
565 | /* it's the user's job to guarantee the buffer length */ | |
566 | for (i = 0; i < pnum; i++) { | |
567 | pinfo = sk_RSA_PRIME_INFO_value(r->prime_infos, i); | |
568 | if (exps != NULL) | |
569 | exps[i] = pinfo->d; | |
570 | if (coeffs != NULL) | |
571 | coeffs[i] = pinfo->t; | |
572 | } | |
573 | } | |
574 | ||
575 | return 1; | |
576 | } | |
afb638f1 | 577 | #endif |
665d899f | 578 | |
6692ff77 DMSP |
579 | const BIGNUM *RSA_get0_n(const RSA *r) |
580 | { | |
581 | return r->n; | |
582 | } | |
583 | ||
584 | const BIGNUM *RSA_get0_e(const RSA *r) | |
585 | { | |
586 | return r->e; | |
587 | } | |
588 | ||
589 | const BIGNUM *RSA_get0_d(const RSA *r) | |
590 | { | |
591 | return r->d; | |
592 | } | |
593 | ||
594 | const BIGNUM *RSA_get0_p(const RSA *r) | |
595 | { | |
596 | return r->p; | |
597 | } | |
598 | ||
599 | const BIGNUM *RSA_get0_q(const RSA *r) | |
600 | { | |
601 | return r->q; | |
602 | } | |
603 | ||
604 | const BIGNUM *RSA_get0_dmp1(const RSA *r) | |
605 | { | |
606 | return r->dmp1; | |
607 | } | |
608 | ||
609 | const BIGNUM *RSA_get0_dmq1(const RSA *r) | |
610 | { | |
611 | return r->dmq1; | |
612 | } | |
613 | ||
614 | const BIGNUM *RSA_get0_iqmp(const RSA *r) | |
615 | { | |
616 | return r->iqmp; | |
617 | } | |
618 | ||
afb638f1 MC |
619 | /* TODO(3.0): Temporary until we move PSS support into the FIPS module */ |
620 | #ifndef FIPS_MODE | |
677add38 RL |
621 | const RSA_PSS_PARAMS *RSA_get0_pss_params(const RSA *r) |
622 | { | |
623 | return r->pss; | |
624 | } | |
afb638f1 | 625 | #endif |
677add38 | 626 | |
9862e9aa RL |
627 | void RSA_clear_flags(RSA *r, int flags) |
628 | { | |
629 | r->flags &= ~flags; | |
630 | } | |
631 | ||
632 | int RSA_test_flags(const RSA *r, int flags) | |
633 | { | |
634 | return r->flags & flags; | |
635 | } | |
636 | ||
637 | void RSA_set_flags(RSA *r, int flags) | |
638 | { | |
639 | r->flags |= flags; | |
640 | } | |
641 | ||
665d899f PY |
642 | int RSA_get_version(RSA *r) |
643 | { | |
644 | /* { two-prime(0), multi(1) } */ | |
645 | return r->version; | |
646 | } | |
647 | ||
afb638f1 | 648 | #ifndef FIPS_MODE |
e0685d24 | 649 | ENGINE *RSA_get0_engine(const RSA *r) |
9862e9aa RL |
650 | { |
651 | return r->engine; | |
652 | } | |
e5e04ee3 DSH |
653 | |
654 | int RSA_pkey_ctx_ctrl(EVP_PKEY_CTX *ctx, int optype, int cmd, int p1, void *p2) | |
655 | { | |
656 | /* If key type not RSA or RSA-PSS return error */ | |
657 | if (ctx != NULL && ctx->pmeth != NULL | |
658 | && ctx->pmeth->pkey_id != EVP_PKEY_RSA | |
659 | && ctx->pmeth->pkey_id != EVP_PKEY_RSA_PSS) | |
660 | return -1; | |
661 | return EVP_PKEY_CTX_ctrl(ctx, -1, optype, cmd, p1, p2); | |
662 | } | |
afb638f1 | 663 | #endif |
c3a4fa4c RL |
664 | |
665 | DEFINE_STACK_OF(BIGNUM) | |
666 | ||
667 | int rsa_set0_all_params(RSA *r, const STACK_OF(BIGNUM) *primes, | |
668 | const STACK_OF(BIGNUM) *exps, | |
669 | const STACK_OF(BIGNUM) *coeffs) | |
670 | { | |
afb638f1 | 671 | #ifndef FIPS_MODE |
c3a4fa4c | 672 | STACK_OF(RSA_PRIME_INFO) *prime_infos, *old_infos = NULL; |
afb638f1 | 673 | #endif |
c3a4fa4c RL |
674 | int pnum; |
675 | ||
676 | if (primes == NULL || exps == NULL || coeffs == NULL) | |
677 | return 0; | |
678 | ||
679 | pnum = sk_BIGNUM_num(primes); | |
680 | if (pnum < 2 | |
681 | || pnum != sk_BIGNUM_num(exps) | |
682 | || pnum != sk_BIGNUM_num(coeffs) + 1) | |
683 | return 0; | |
684 | ||
685 | if (!RSA_set0_factors(r, sk_BIGNUM_value(primes, 0), | |
686 | sk_BIGNUM_value(primes, 1)) | |
687 | || !RSA_set0_crt_params(r, sk_BIGNUM_value(exps, 0), | |
688 | sk_BIGNUM_value(exps, 1), | |
689 | sk_BIGNUM_value(coeffs, 0))) | |
690 | return 0; | |
691 | ||
afb638f1 | 692 | #ifndef FIPS_MODE |
c3a4fa4c | 693 | old_infos = r->prime_infos; |
afb638f1 | 694 | #endif |
c3a4fa4c RL |
695 | |
696 | if (pnum > 2) { | |
afb638f1 | 697 | #ifndef FIPS_MODE |
c3a4fa4c RL |
698 | int i; |
699 | ||
700 | prime_infos = sk_RSA_PRIME_INFO_new_reserve(NULL, pnum); | |
701 | if (prime_infos == NULL) | |
702 | return 0; | |
703 | ||
704 | for (i = 2; i < pnum; i++) { | |
705 | BIGNUM *prime = sk_BIGNUM_value(primes, i); | |
706 | BIGNUM *exp = sk_BIGNUM_value(exps, i); | |
707 | BIGNUM *coeff = sk_BIGNUM_value(coeffs, i - 1); | |
708 | RSA_PRIME_INFO *pinfo = NULL; | |
709 | ||
710 | if (!ossl_assert(prime != NULL && exp != NULL && coeff != NULL)) | |
711 | goto err; | |
712 | ||
713 | /* Using rsa_multip_info_new() is wasteful, so allocate directly */ | |
714 | if ((pinfo = OPENSSL_zalloc(sizeof(*pinfo))) == NULL) { | |
715 | ERR_raise(ERR_LIB_RSA, ERR_R_MALLOC_FAILURE); | |
716 | goto err; | |
717 | } | |
718 | ||
719 | pinfo->r = prime; | |
720 | pinfo->d = exp; | |
721 | pinfo->t = coeff; | |
722 | BN_set_flags(pinfo->r, BN_FLG_CONSTTIME); | |
723 | BN_set_flags(pinfo->d, BN_FLG_CONSTTIME); | |
724 | BN_set_flags(pinfo->t, BN_FLG_CONSTTIME); | |
725 | (void)sk_RSA_PRIME_INFO_push(prime_infos, pinfo); | |
726 | } | |
727 | ||
728 | r->prime_infos = prime_infos; | |
729 | ||
730 | if (!rsa_multip_calc_product(r)) { | |
731 | r->prime_infos = old_infos; | |
732 | goto err; | |
733 | } | |
afb638f1 MC |
734 | #else |
735 | return 0; | |
736 | #endif | |
c3a4fa4c RL |
737 | } |
738 | ||
afb638f1 | 739 | #ifndef FIPS_MODE |
c3a4fa4c RL |
740 | if (old_infos != NULL) { |
741 | /* | |
742 | * This is hard to deal with, since the old infos could | |
743 | * also be set by this function and r, d, t should not | |
744 | * be freed in that case. So currently, stay consistent | |
745 | * with other *set0* functions: just free it... | |
746 | */ | |
747 | sk_RSA_PRIME_INFO_pop_free(old_infos, rsa_multip_info_free); | |
748 | } | |
afb638f1 | 749 | #endif |
c3a4fa4c RL |
750 | |
751 | r->version = pnum > 2 ? RSA_ASN1_VERSION_MULTI : RSA_ASN1_VERSION_DEFAULT; | |
752 | r->dirty_cnt++; | |
753 | ||
754 | return 1; | |
afb638f1 | 755 | #ifndef FIPS_MODE |
c3a4fa4c RL |
756 | err: |
757 | /* r, d, t should not be freed */ | |
758 | sk_RSA_PRIME_INFO_pop_free(prime_infos, rsa_multip_info_free_ex); | |
759 | return 0; | |
afb638f1 | 760 | #endif |
c3a4fa4c RL |
761 | } |
762 | ||
763 | DEFINE_SPECIAL_STACK_OF_CONST(BIGNUM_const, BIGNUM) | |
764 | ||
765 | int rsa_get0_all_params(RSA *r, STACK_OF(BIGNUM_const) *primes, | |
766 | STACK_OF(BIGNUM_const) *exps, | |
767 | STACK_OF(BIGNUM_const) *coeffs) | |
768 | { | |
afb638f1 | 769 | #ifndef FIPS_MODE |
c3a4fa4c RL |
770 | RSA_PRIME_INFO *pinfo; |
771 | int i, pnum; | |
afb638f1 | 772 | #endif |
c3a4fa4c RL |
773 | |
774 | if (r == NULL) | |
775 | return 0; | |
776 | ||
c3a4fa4c RL |
777 | sk_BIGNUM_const_push(primes, RSA_get0_p(r)); |
778 | sk_BIGNUM_const_push(primes, RSA_get0_q(r)); | |
779 | sk_BIGNUM_const_push(exps, RSA_get0_dmp1(r)); | |
780 | sk_BIGNUM_const_push(exps, RSA_get0_dmq1(r)); | |
781 | sk_BIGNUM_const_push(coeffs, RSA_get0_iqmp(r)); | |
afb638f1 MC |
782 | |
783 | #ifndef FIPS_MODE | |
784 | pnum = RSA_get_multi_prime_extra_count(r); | |
c3a4fa4c RL |
785 | for (i = 0; i < pnum; i++) { |
786 | pinfo = sk_RSA_PRIME_INFO_value(r->prime_infos, i); | |
787 | sk_BIGNUM_const_push(primes, pinfo->r); | |
788 | sk_BIGNUM_const_push(exps, pinfo->d); | |
789 | sk_BIGNUM_const_push(coeffs, pinfo->t); | |
790 | } | |
afb638f1 | 791 | #endif |
c3a4fa4c RL |
792 | |
793 | return 1; | |
794 | } | |
89abd1b6 | 795 | |
afb638f1 | 796 | #ifndef FIPS_MODE |
89abd1b6 MC |
797 | int EVP_PKEY_CTX_set_rsa_padding(EVP_PKEY_CTX *ctx, int pad_mode) |
798 | { | |
799 | OSSL_PARAM pad_params[2], *p = pad_params; | |
800 | ||
801 | if (ctx == NULL) { | |
802 | ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED); | |
803 | /* Uses the same return values as EVP_PKEY_CTX_ctrl */ | |
804 | return -2; | |
805 | } | |
806 | ||
807 | /* If key type not RSA or RSA-PSS return error */ | |
808 | if (ctx->pmeth != NULL | |
809 | && ctx->pmeth->pkey_id != EVP_PKEY_RSA | |
810 | && ctx->pmeth->pkey_id != EVP_PKEY_RSA_PSS) | |
811 | return -1; | |
812 | ||
813 | /* TODO(3.0): Remove this eventually when no more legacy */ | |
814 | if (!EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx) | |
815 | || ctx->op.ciph.ciphprovctx == NULL) | |
816 | return EVP_PKEY_CTX_ctrl(ctx, -1, -1, EVP_PKEY_CTRL_RSA_PADDING, | |
817 | pad_mode, NULL); | |
818 | ||
819 | *p++ = OSSL_PARAM_construct_int(OSSL_ASYM_CIPHER_PARAM_PAD_MODE, &pad_mode); | |
820 | *p++ = OSSL_PARAM_construct_end(); | |
821 | ||
822 | return EVP_PKEY_CTX_set_params(ctx, pad_params); | |
823 | } | |
824 | ||
825 | int EVP_PKEY_CTX_get_rsa_padding(EVP_PKEY_CTX *ctx, int *pad_mode) | |
826 | { | |
827 | OSSL_PARAM pad_params[2], *p = pad_params; | |
828 | ||
829 | if (ctx == NULL || pad_mode == NULL) { | |
830 | ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED); | |
831 | /* Uses the same return values as EVP_PKEY_CTX_ctrl */ | |
832 | return -2; | |
833 | } | |
834 | ||
835 | /* If key type not RSA or RSA-PSS return error */ | |
836 | if (ctx->pmeth != NULL | |
837 | && ctx->pmeth->pkey_id != EVP_PKEY_RSA | |
838 | && ctx->pmeth->pkey_id != EVP_PKEY_RSA_PSS) | |
839 | return -1; | |
840 | ||
841 | /* TODO(3.0): Remove this eventually when no more legacy */ | |
842 | if (!EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx) | |
843 | || ctx->op.ciph.ciphprovctx == NULL) | |
844 | return EVP_PKEY_CTX_ctrl(ctx, -1, -1, EVP_PKEY_CTRL_GET_RSA_PADDING, 0, | |
845 | pad_mode); | |
846 | ||
847 | *p++ = OSSL_PARAM_construct_int(OSSL_ASYM_CIPHER_PARAM_PAD_MODE, pad_mode); | |
848 | *p++ = OSSL_PARAM_construct_end(); | |
849 | ||
850 | if (!EVP_PKEY_CTX_get_params(ctx, pad_params)) | |
851 | return 0; | |
852 | ||
853 | return 1; | |
854 | ||
855 | } | |
856 | ||
857 | int EVP_PKEY_CTX_set_rsa_oaep_md(EVP_PKEY_CTX *ctx, const EVP_MD *md) | |
858 | { | |
859 | const char *name; | |
860 | ||
861 | if (ctx == NULL || !EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)) { | |
862 | ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED); | |
863 | /* Uses the same return values as EVP_PKEY_CTX_ctrl */ | |
864 | return -2; | |
865 | } | |
866 | ||
867 | /* If key type not RSA return error */ | |
868 | if (ctx->pmeth != NULL && ctx->pmeth->pkey_id != EVP_PKEY_RSA) | |
869 | return -1; | |
870 | ||
871 | /* TODO(3.0): Remove this eventually when no more legacy */ | |
872 | if (ctx->op.ciph.ciphprovctx == NULL) | |
873 | return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_TYPE_CRYPT, | |
874 | EVP_PKEY_CTRL_RSA_OAEP_MD, 0, (void *)md); | |
875 | ||
876 | name = (md == NULL) ? "" : EVP_MD_name(md); | |
877 | ||
878 | return EVP_PKEY_CTX_set_rsa_oaep_md_name(ctx, name, NULL); | |
879 | } | |
880 | ||
881 | int EVP_PKEY_CTX_set_rsa_oaep_md_name(EVP_PKEY_CTX *ctx, const char *mdname, | |
882 | const char *mdprops) | |
883 | { | |
884 | OSSL_PARAM rsa_params[3], *p = rsa_params; | |
885 | ||
886 | if (ctx == NULL || !EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)) { | |
887 | ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED); | |
888 | /* Uses the same return values as EVP_PKEY_CTX_ctrl */ | |
889 | return -2; | |
890 | } | |
891 | ||
892 | /* If key type not RSA return error */ | |
893 | if (ctx->pmeth != NULL && ctx->pmeth->pkey_id != EVP_PKEY_RSA) | |
894 | return -1; | |
895 | ||
896 | ||
897 | *p++ = OSSL_PARAM_construct_utf8_string(OSSL_ASYM_CIPHER_PARAM_OAEP_DIGEST, | |
898 | /* | |
899 | * Cast away the const. This is read | |
900 | * only so should be safe | |
901 | */ | |
8b6ffd40 | 902 | (char *)mdname, 0); |
89abd1b6 MC |
903 | if (mdprops != NULL) { |
904 | *p++ = OSSL_PARAM_construct_utf8_string( | |
905 | OSSL_ASYM_CIPHER_PARAM_OAEP_DIGEST_PROPS, | |
906 | /* | |
907 | * Cast away the const. This is read | |
908 | * only so should be safe | |
909 | */ | |
8b6ffd40 | 910 | (char *)mdprops, 0); |
89abd1b6 MC |
911 | } |
912 | *p++ = OSSL_PARAM_construct_end(); | |
913 | ||
914 | return EVP_PKEY_CTX_set_params(ctx, rsa_params); | |
915 | } | |
916 | ||
917 | int EVP_PKEY_CTX_get_rsa_oaep_md_name(EVP_PKEY_CTX *ctx, char *name, | |
918 | size_t namelen) | |
919 | { | |
920 | OSSL_PARAM rsa_params[2], *p = rsa_params; | |
921 | ||
922 | if (ctx == NULL || !EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)) { | |
923 | ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED); | |
924 | /* Uses the same return values as EVP_PKEY_CTX_ctrl */ | |
925 | return -2; | |
926 | } | |
927 | ||
928 | /* If key type not RSA return error */ | |
929 | if (ctx->pmeth != NULL && ctx->pmeth->pkey_id != EVP_PKEY_RSA) | |
930 | return -1; | |
931 | ||
932 | *p++ = OSSL_PARAM_construct_utf8_string(OSSL_ASYM_CIPHER_PARAM_OAEP_DIGEST, | |
933 | name, namelen); | |
934 | *p++ = OSSL_PARAM_construct_end(); | |
935 | ||
936 | if (!EVP_PKEY_CTX_get_params(ctx, rsa_params)) | |
937 | return -1; | |
938 | ||
939 | return 1; | |
940 | } | |
941 | ||
942 | int EVP_PKEY_CTX_get_rsa_oaep_md(EVP_PKEY_CTX *ctx, const EVP_MD **md) | |
943 | { | |
944 | /* 80 should be big enough */ | |
945 | char name[80] = ""; | |
946 | ||
947 | if (ctx == NULL || md == NULL || !EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)) { | |
948 | ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED); | |
949 | /* Uses the same return values as EVP_PKEY_CTX_ctrl */ | |
950 | return -2; | |
951 | } | |
952 | ||
953 | /* If key type not RSA return error */ | |
954 | if (ctx->pmeth != NULL && ctx->pmeth->pkey_id != EVP_PKEY_RSA) | |
955 | return -1; | |
956 | ||
957 | /* TODO(3.0): Remove this eventually when no more legacy */ | |
958 | if (ctx->op.ciph.ciphprovctx == NULL) | |
959 | return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_TYPE_CRYPT, | |
960 | EVP_PKEY_CTRL_GET_RSA_OAEP_MD, 0, (void *)md); | |
961 | ||
962 | if (EVP_PKEY_CTX_get_rsa_oaep_md_name(ctx, name, sizeof(name)) <= 0) | |
963 | return -1; | |
964 | ||
965 | /* May be NULL meaning "unknown" */ | |
966 | *md = EVP_get_digestbyname(name); | |
967 | ||
968 | return 1; | |
969 | } | |
970 | ||
971 | int EVP_PKEY_CTX_set_rsa_mgf1_md(EVP_PKEY_CTX *ctx, const EVP_MD *md) | |
972 | { | |
973 | const char *name; | |
974 | ||
975 | if (ctx == NULL | |
976 | || (!EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx) | |
977 | && !EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx))) { | |
978 | ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED); | |
979 | /* Uses the same return values as EVP_PKEY_CTX_ctrl */ | |
980 | return -2; | |
981 | } | |
982 | ||
983 | /* If key type not RSA return error */ | |
984 | if (ctx->pmeth != NULL | |
985 | && ctx->pmeth->pkey_id != EVP_PKEY_RSA | |
986 | && ctx->pmeth->pkey_id != EVP_PKEY_RSA_PSS) | |
987 | return -1; | |
988 | ||
989 | /* TODO(3.0): Remove this eventually when no more legacy */ | |
990 | if ((EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx) | |
991 | && ctx->op.ciph.ciphprovctx == NULL) | |
992 | || (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx) | |
993 | && ctx->op.sig.sigprovctx == NULL)) | |
994 | return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, | |
995 | EVP_PKEY_OP_TYPE_SIG | EVP_PKEY_OP_TYPE_CRYPT, | |
996 | EVP_PKEY_CTRL_RSA_MGF1_MD, 0, (void *)md); | |
997 | ||
998 | name = (md == NULL) ? "" : EVP_MD_name(md); | |
999 | ||
1000 | return EVP_PKEY_CTX_set_rsa_mgf1_md_name(ctx, name, NULL); | |
1001 | } | |
1002 | ||
1003 | int EVP_PKEY_CTX_set_rsa_mgf1_md_name(EVP_PKEY_CTX *ctx, const char *mdname, | |
1004 | const char *mdprops) | |
1005 | { | |
1006 | OSSL_PARAM rsa_params[3], *p = rsa_params; | |
1007 | ||
1008 | if (ctx == NULL | |
1009 | || mdname == NULL | |
1010 | || (!EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx) | |
1011 | && !EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx))) { | |
1012 | ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED); | |
1013 | /* Uses the same return values as EVP_PKEY_CTX_ctrl */ | |
1014 | return -2; | |
1015 | } | |
1016 | ||
1017 | /* If key type not RSA return error */ | |
1018 | if (ctx->pmeth != NULL | |
1019 | && ctx->pmeth->pkey_id != EVP_PKEY_RSA | |
1020 | && ctx->pmeth->pkey_id != EVP_PKEY_RSA_PSS) | |
1021 | return -1; | |
1022 | ||
1023 | *p++ = OSSL_PARAM_construct_utf8_string(OSSL_ASYM_CIPHER_PARAM_MGF1_DIGEST, | |
1024 | /* | |
1025 | * Cast away the const. This is read | |
1026 | * only so should be safe | |
1027 | */ | |
8b6ffd40 | 1028 | (char *)mdname, 0); |
89abd1b6 MC |
1029 | if (mdprops != NULL) { |
1030 | *p++ = OSSL_PARAM_construct_utf8_string( | |
1031 | OSSL_ASYM_CIPHER_PARAM_MGF1_DIGEST_PROPS, | |
1032 | /* | |
1033 | * Cast away the const. This is read | |
1034 | * only so should be safe | |
1035 | */ | |
8b6ffd40 | 1036 | (char *)mdprops, 0); |
89abd1b6 MC |
1037 | } |
1038 | *p++ = OSSL_PARAM_construct_end(); | |
1039 | ||
1040 | return EVP_PKEY_CTX_set_params(ctx, rsa_params); | |
1041 | } | |
1042 | ||
1043 | int EVP_PKEY_CTX_get_rsa_mgf1_md_name(EVP_PKEY_CTX *ctx, char *name, | |
1044 | size_t namelen) | |
1045 | { | |
1046 | OSSL_PARAM rsa_params[2], *p = rsa_params; | |
1047 | ||
1048 | if (ctx == NULL | |
1049 | || (!EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx) | |
1050 | && !EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx))) { | |
1051 | ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED); | |
1052 | /* Uses the same return values as EVP_PKEY_CTX_ctrl */ | |
1053 | return -2; | |
1054 | } | |
1055 | ||
1056 | /* If key type not RSA or RSA-PSS return error */ | |
1057 | if (ctx->pmeth != NULL | |
1058 | && ctx->pmeth->pkey_id != EVP_PKEY_RSA | |
1059 | && ctx->pmeth->pkey_id != EVP_PKEY_RSA_PSS) | |
1060 | return -1; | |
1061 | ||
1062 | *p++ = OSSL_PARAM_construct_utf8_string(OSSL_ASYM_CIPHER_PARAM_MGF1_DIGEST, | |
1063 | name, namelen); | |
1064 | *p++ = OSSL_PARAM_construct_end(); | |
1065 | ||
1066 | if (!EVP_PKEY_CTX_get_params(ctx, rsa_params)) | |
1067 | return -1; | |
1068 | ||
1069 | return 1; | |
1070 | } | |
1071 | ||
1072 | int EVP_PKEY_CTX_get_rsa_mgf1_md(EVP_PKEY_CTX *ctx, const EVP_MD **md) | |
1073 | { | |
1074 | /* 80 should be big enough */ | |
1075 | char name[80] = ""; | |
1076 | ||
1077 | if (ctx == NULL | |
1078 | || (!EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx) | |
1079 | && !EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx))) { | |
1080 | ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED); | |
1081 | /* Uses the same return values as EVP_PKEY_CTX_ctrl */ | |
1082 | return -2; | |
1083 | } | |
1084 | ||
1085 | /* If key type not RSA or RSA-PSS return error */ | |
1086 | if (ctx->pmeth != NULL | |
1087 | && ctx->pmeth->pkey_id != EVP_PKEY_RSA | |
1088 | && ctx->pmeth->pkey_id != EVP_PKEY_RSA_PSS) | |
1089 | return -1; | |
1090 | ||
1091 | /* TODO(3.0): Remove this eventually when no more legacy */ | |
1092 | if ((EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx) | |
1093 | && ctx->op.ciph.ciphprovctx == NULL) | |
1094 | || (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx) | |
1095 | && ctx->op.sig.sigprovctx == NULL)) | |
1096 | return EVP_PKEY_CTX_ctrl(ctx, -1, | |
1097 | EVP_PKEY_OP_TYPE_SIG | EVP_PKEY_OP_TYPE_CRYPT, | |
1098 | EVP_PKEY_CTRL_GET_RSA_MGF1_MD, 0, (void *)md); | |
1099 | ||
1100 | if (EVP_PKEY_CTX_get_rsa_mgf1_md_name(ctx, name, sizeof(name)) <= 0) | |
1101 | return -1; | |
1102 | ||
1103 | /* May be NULL meaning "unknown" */ | |
1104 | *md = EVP_get_digestbyname(name); | |
1105 | ||
1106 | return 1; | |
1107 | } | |
1108 | ||
1109 | int EVP_PKEY_CTX_set0_rsa_oaep_label(EVP_PKEY_CTX *ctx, void *label, int llen) | |
1110 | { | |
1111 | OSSL_PARAM rsa_params[2], *p = rsa_params; | |
1112 | ||
1113 | if (ctx == NULL || !EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)) { | |
1114 | ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED); | |
1115 | /* Uses the same return values as EVP_PKEY_CTX_ctrl */ | |
1116 | return -2; | |
1117 | } | |
1118 | ||
1119 | /* If key type not RSA return error */ | |
1120 | if (ctx->pmeth != NULL && ctx->pmeth->pkey_id != EVP_PKEY_RSA) | |
1121 | return -1; | |
1122 | ||
1123 | /* TODO(3.0): Remove this eventually when no more legacy */ | |
1124 | if (ctx->op.ciph.ciphprovctx == NULL) | |
1125 | return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_TYPE_CRYPT, | |
1126 | EVP_PKEY_CTRL_RSA_OAEP_LABEL, llen, | |
1127 | (void *)label); | |
1128 | ||
1129 | *p++ = OSSL_PARAM_construct_octet_string(OSSL_ASYM_CIPHER_PARAM_OAEP_LABEL, | |
1130 | /* | |
1131 | * Cast away the const. This is read | |
1132 | * only so should be safe | |
1133 | */ | |
1134 | (void *)label, | |
1135 | (size_t)llen); | |
1136 | *p++ = OSSL_PARAM_construct_end(); | |
1137 | ||
1138 | if (!EVP_PKEY_CTX_set_params(ctx, rsa_params)) | |
1139 | return 0; | |
1140 | ||
1141 | OPENSSL_free(label); | |
1142 | return 1; | |
1143 | } | |
1144 | ||
1145 | int EVP_PKEY_CTX_get0_rsa_oaep_label(EVP_PKEY_CTX *ctx, unsigned char **label) | |
1146 | { | |
1147 | OSSL_PARAM rsa_params[3], *p = rsa_params; | |
1148 | size_t labellen; | |
1149 | ||
1150 | if (ctx == NULL || !EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)) { | |
1151 | ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED); | |
1152 | /* Uses the same return values as EVP_PKEY_CTX_ctrl */ | |
1153 | return -2; | |
1154 | } | |
1155 | ||
1156 | /* If key type not RSA return error */ | |
1157 | if (ctx->pmeth != NULL && ctx->pmeth->pkey_id != EVP_PKEY_RSA) | |
1158 | return -1; | |
1159 | ||
1160 | /* TODO(3.0): Remove this eventually when no more legacy */ | |
1161 | if (ctx->op.ciph.ciphprovctx == NULL) | |
1162 | return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_TYPE_CRYPT, | |
1163 | EVP_PKEY_CTRL_GET_RSA_OAEP_LABEL, 0, | |
1164 | (void *)label); | |
1165 | ||
1166 | *p++ = OSSL_PARAM_construct_octet_ptr(OSSL_ASYM_CIPHER_PARAM_OAEP_LABEL, | |
1167 | (void **)label, 0); | |
1168 | *p++ = OSSL_PARAM_construct_size_t(OSSL_ASYM_CIPHER_PARAM_OAEP_LABEL_LEN, | |
1169 | &labellen); | |
1170 | *p++ = OSSL_PARAM_construct_end(); | |
1171 | ||
1172 | if (!EVP_PKEY_CTX_get_params(ctx, rsa_params)) | |
1173 | return -1; | |
1174 | ||
1175 | if (labellen > INT_MAX) | |
1176 | return -1; | |
1177 | ||
1178 | return (int)labellen; | |
1179 | } | |
afb638f1 | 1180 | #endif |