providers/implementations/keymgmt/rsa_kmgmt.c

   1 /*
   2  * Copyright 2019-2020 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the Apache License 2.0 (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 /*
  11  * RSA low level APIs are deprecated for public use, but still ok for
  12  * internal use.
  13  */
  14 #include "internal/deprecated.h"
  15
  16 #include <openssl/core_dispatch.h>
  17 #include <openssl/core_names.h>
  18 #include <openssl/bn.h>
  19 #include <openssl/err.h>
  20 #include <openssl/rsa.h>
  21 #include <openssl/evp.h>
  22 #include "prov/implementations.h"
  23 #include "prov/providercommon.h"
  24 #include "prov/provider_ctx.h"
  25 #include "crypto/rsa.h"
  26 #include "crypto/cryptlib.h"
  27 #include "internal/param_build_set.h"
  28
  29 static OSSL_FUNC_keymgmt_new_fn rsa_newdata;
  30 static OSSL_FUNC_keymgmt_new_fn rsapss_newdata;
  31 static OSSL_FUNC_keymgmt_gen_init_fn rsa_gen_init;
  32 static OSSL_FUNC_keymgmt_gen_init_fn rsapss_gen_init;
  33 static OSSL_FUNC_keymgmt_gen_set_params_fn rsa_gen_set_params;
  34 static OSSL_FUNC_keymgmt_gen_settable_params_fn rsa_gen_settable_params;
  35 static OSSL_FUNC_keymgmt_gen_settable_params_fn rsapss_gen_settable_params;
  36 static OSSL_FUNC_keymgmt_gen_fn rsa_gen;
  37 static OSSL_FUNC_keymgmt_gen_cleanup_fn rsa_gen_cleanup;
  38 static OSSL_FUNC_keymgmt_load_fn rsa_load;
  39 static OSSL_FUNC_keymgmt_free_fn rsa_freedata;
  40 static OSSL_FUNC_keymgmt_get_params_fn rsa_get_params;
  41 static OSSL_FUNC_keymgmt_gettable_params_fn rsa_gettable_params;
  42 static OSSL_FUNC_keymgmt_has_fn rsa_has;
  43 static OSSL_FUNC_keymgmt_match_fn rsa_match;
  44 static OSSL_FUNC_keymgmt_validate_fn rsa_validate;
  45 static OSSL_FUNC_keymgmt_import_fn rsa_import;
  46 static OSSL_FUNC_keymgmt_import_types_fn rsa_import_types;
  47 static OSSL_FUNC_keymgmt_export_fn rsa_export;
  48 static OSSL_FUNC_keymgmt_export_types_fn rsa_export_types;
  49 static OSSL_FUNC_keymgmt_query_operation_name_fn rsa_query_operation_name;
  50
  51 #define RSA_DEFAULT_MD "SHA256"
  52 #define RSA_PSS_DEFAULT_MD OSSL_DIGEST_NAME_SHA1
  53 #define RSA_POSSIBLE_SELECTIONS                                        \
  54     (OSSL_KEYMGMT_SELECT_KEYPAIR | OSSL_KEYMGMT_SELECT_OTHER_PARAMETERS)
  55
  56 DEFINE_STACK_OF(BIGNUM)
  57 DEFINE_SPECIAL_STACK_OF_CONST(BIGNUM_const, BIGNUM)
  58
  59 static int pss_params_fromdata(RSA_PSS_PARAMS_30 *pss_params,
  60                                const OSSL_PARAM params[], int rsa_type,
  61                                OSSL_LIB_CTX *libctx)
  62 {
  63     if (!ossl_rsa_pss_params_30_fromdata(pss_params, params, libctx))
  64         return 0;
  65
  66     /* If not a PSS type RSA, sending us PSS parameters is wrong */
  67     if (rsa_type != RSA_FLAG_TYPE_RSASSAPSS
  68         && !ossl_rsa_pss_params_30_is_unrestricted(pss_params))
  69         return 0;
  70
  71     return 1;
  72 }
  73
  74 static void *rsa_newdata(void *provctx)
  75 {
  76     OSSL_LIB_CTX *libctx = PROV_LIBCTX_OF(provctx);
  77     RSA *rsa;
  78
  79     if (!ossl_prov_is_running())
  80         return NULL;
  81
  82     rsa = ossl_rsa_new_with_ctx(libctx);
  83     if (rsa != NULL) {
  84         RSA_clear_flags(rsa, RSA_FLAG_TYPE_MASK);
  85         RSA_set_flags(rsa, RSA_FLAG_TYPE_RSA);
  86     }
  87     return rsa;
  88 }
  89
  90 static void *rsapss_newdata(void *provctx)
  91 {
  92     OSSL_LIB_CTX *libctx = PROV_LIBCTX_OF(provctx);
  93     RSA *rsa;
  94
  95     if (!ossl_prov_is_running())
  96         return NULL;
  97
  98     rsa = ossl_rsa_new_with_ctx(libctx);
  99     if (rsa != NULL) {
 100         RSA_clear_flags(rsa, RSA_FLAG_TYPE_MASK);
 101         RSA_set_flags(rsa, RSA_FLAG_TYPE_RSASSAPSS);
 102     }
 103     return rsa;
 104 }
 105
 106 static void rsa_freedata(void *keydata)
 107 {
 108     RSA_free(keydata);
 109 }
 110
 111 static int rsa_has(void *keydata, int selection)
 112 {
 113     RSA *rsa = keydata;
 114     int ok = 0;
 115
 116     if (rsa != NULL && ossl_prov_is_running()) {
 117         if ((selection & RSA_POSSIBLE_SELECTIONS) != 0)
 118             ok = 1;
 119
 120         if ((selection & OSSL_KEYMGMT_SELECT_OTHER_PARAMETERS) != 0)
 121             /* This will change with OAEP */
 122             ok = ok && (RSA_test_flags(rsa, RSA_FLAG_TYPE_RSASSAPSS) != 0);
 123         if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0)
 124             ok = ok && (RSA_get0_e(rsa) != NULL);
 125         if ((selection & OSSL_KEYMGMT_SELECT_PUBLIC_KEY) != 0)
 126             ok = ok && (RSA_get0_n(rsa) != NULL);
 127         if ((selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0)
 128             ok = ok && (RSA_get0_d(rsa) != NULL);
 129     }
 130     return ok;
 131 }
 132
 133 static int rsa_match(const void *keydata1, const void *keydata2, int selection)
 134 {
 135     const RSA *rsa1 = keydata1;
 136     const RSA *rsa2 = keydata2;
 137     int ok = 1;
 138
 139     if (!ossl_prov_is_running())
 140         return 0;
 141
 142     /* There is always an |e| */
 143     ok = ok && BN_cmp(RSA_get0_e(rsa1), RSA_get0_e(rsa2)) == 0;
 144     if ((selection & OSSL_KEYMGMT_SELECT_PUBLIC_KEY) != 0)
 145         ok = ok && BN_cmp(RSA_get0_n(rsa1), RSA_get0_n(rsa2)) == 0;
 146     if ((selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0)
 147         ok = ok && BN_cmp(RSA_get0_d(rsa1), RSA_get0_d(rsa2)) == 0;
 148     return ok;
 149 }
 150
 151 static int rsa_import(void *keydata, int selection, const OSSL_PARAM params[])
 152 {
 153     RSA *rsa = keydata;
 154     int rsa_type;
 155     int ok = 1;
 156
 157     if (!ossl_prov_is_running() || rsa == NULL)
 158         return 0;
 159
 160     if ((selection & RSA_POSSIBLE_SELECTIONS) == 0)
 161         return 0;
 162
 163     rsa_type = RSA_test_flags(rsa, RSA_FLAG_TYPE_MASK);
 164
 165     /* TODO(3.0) OAEP should bring on parameters as well */
 166
 167     if ((selection & OSSL_KEYMGMT_SELECT_OTHER_PARAMETERS) != 0)
 168         ok = ok && pss_params_fromdata(ossl_rsa_get0_pss_params_30(rsa), params,
 169                                        rsa_type, ossl_rsa_get0_libctx(rsa));
 170     if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0)
 171         ok = ok && ossl_rsa_fromdata(rsa, params);
 172
 173     return ok;
 174 }
 175
 176 static int rsa_export(void *keydata, int selection,
 177                       OSSL_CALLBACK *param_callback, void *cbarg)
 178 {
 179     RSA *rsa = keydata;
 180     const RSA_PSS_PARAMS_30 *pss_params = ossl_rsa_get0_pss_params_30(rsa);
 181     OSSL_PARAM_BLD *tmpl;
 182     OSSL_PARAM *params = NULL;
 183     int ok = 1;
 184
 185     if (!ossl_prov_is_running() || rsa == NULL)
 186         return 0;
 187
 188     /* TODO(3.0) OAEP should bring on parameters */
 189
 190     tmpl = OSSL_PARAM_BLD_new();
 191     if (tmpl == NULL)
 192         return 0;
 193
 194     if ((selection & OSSL_KEYMGMT_SELECT_OTHER_PARAMETERS) != 0)
 195         ok = ok && (ossl_rsa_pss_params_30_is_unrestricted(pss_params)
 196                     || ossl_rsa_pss_params_30_todata(pss_params, tmpl, NULL));
 197     if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0)
 198         ok = ok && ossl_rsa_todata(rsa, tmpl, NULL);
 199
 200     if (!ok
 201         || (params = OSSL_PARAM_BLD_to_param(tmpl)) == NULL)
 202         goto err;
 203
 204     ok = param_callback(params, cbarg);
 205     OSSL_PARAM_BLD_free_params(params);
 206 err:
 207     OSSL_PARAM_BLD_free(tmpl);
 208     return ok;
 209 }
 210
 211 #ifdef FIPS_MODULE
 212 /* In fips mode there are no multi-primes. */
 213 # define RSA_KEY_MP_TYPES()                                                    \
 214 OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR1, NULL, 0),                           \
 215 OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR2, NULL, 0),                           \
 216 OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT1, NULL, 0),                         \
 217 OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT2, NULL, 0),                         \
 218 OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_COEFFICIENT1, NULL, 0),
 219 #else
 220 /*
 221  * We allow up to 10 prime factors (starting with p, q).
 222  * NOTE: there is only 9 OSSL_PKEY_PARAM_RSA_COEFFICIENT
 223  */
 224 # define RSA_KEY_MP_TYPES()                                                    \
 225 OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR1, NULL, 0),                           \
 226 OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR2, NULL, 0),                           \
 227 OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR3, NULL, 0),                           \
 228 OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR4, NULL, 0),                           \
 229 OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR5, NULL, 0),                           \
 230 OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR6, NULL, 0),                           \
 231 OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR7, NULL, 0),                           \
 232 OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR8, NULL, 0),                           \
 233 OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR9, NULL, 0),                           \
 234 OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR10, NULL, 0),                          \
 235 OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT1, NULL, 0),                         \
 236 OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT2, NULL, 0),                         \
 237 OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT3, NULL, 0),                         \
 238 OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT4, NULL, 0),                         \
 239 OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT5, NULL, 0),                         \
 240 OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT6, NULL, 0),                         \
 241 OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT7, NULL, 0),                         \
 242 OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT8, NULL, 0),                         \
 243 OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT9, NULL, 0),                         \
 244 OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT10, NULL, 0),                        \
 245 OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_COEFFICIENT1, NULL, 0),                      \
 246 OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_COEFFICIENT2, NULL, 0),                      \
 247 OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_COEFFICIENT3, NULL, 0),                      \
 248 OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_COEFFICIENT4, NULL, 0),                      \
 249 OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_COEFFICIENT5, NULL, 0),                      \
 250 OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_COEFFICIENT6, NULL, 0),                      \
 251 OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_COEFFICIENT7, NULL, 0),                      \
 252 OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_COEFFICIENT8, NULL, 0),                      \
 253 OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_COEFFICIENT9, NULL, 0),
 254 #endif
 255
 256 #define RSA_KEY_TYPES()                                                        \
 257 OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_N, NULL, 0),                                 \
 258 OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_E, NULL, 0),                                 \
 259 OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_D, NULL, 0),                                 \
 260 RSA_KEY_MP_TYPES()
 261
 262 /*
 263  * This provider can export everything in an RSA key, so we use the exact
 264  * same type description for export as for import.  Other providers might
 265  * choose to import full keys, but only export the public parts, and will
 266  * therefore have the importkey_types and importkey_types functions return
 267  * different arrays.
 268  */
 269 static const OSSL_PARAM rsa_key_types[] = {
 270     RSA_KEY_TYPES()
 271     OSSL_PARAM_END
 272 };
 273 /*
 274  * We lied about the amount of factors, exponents and coefficients, the
 275  * export and import functions can really deal with an infinite amount
 276  * of these numbers.  However, RSA keys with too many primes are futile,
 277  * so we at least pretend to have some limits.
 278  */
 279
 280 static const OSSL_PARAM *rsa_imexport_types(int selection)
 281 {
 282     if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0)
 283         return rsa_key_types;
 284     return NULL;
 285 }
 286
 287 static const OSSL_PARAM *rsa_import_types(int selection)
 288 {
 289     return rsa_imexport_types(selection);
 290 }
 291
 292 static const OSSL_PARAM *rsa_export_types(int selection)
 293 {
 294     return rsa_imexport_types(selection);
 295 }
 296
 297 static int rsa_get_params(void *key, OSSL_PARAM params[])
 298 {
 299     RSA *rsa = key;
 300     const RSA_PSS_PARAMS_30 *pss_params = ossl_rsa_get0_pss_params_30(rsa);
 301     int rsa_type = RSA_test_flags(rsa, RSA_FLAG_TYPE_MASK);
 302     OSSL_PARAM *p;
 303
 304     if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_BITS)) != NULL
 305         && !OSSL_PARAM_set_int(p, RSA_bits(rsa)))
 306         return 0;
 307     if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_SECURITY_BITS)) != NULL
 308         && !OSSL_PARAM_set_int(p, RSA_security_bits(rsa)))
 309         return 0;
 310     if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_MAX_SIZE)) != NULL
 311         && !OSSL_PARAM_set_int(p, RSA_size(rsa)))
 312         return 0;
 313
 314     /*
 315      * For RSA-PSS keys, we ignore the default digest request
 316      * TODO(3.0) with RSA-OAEP keys, this may need to be amended
 317      */
 318     if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_DEFAULT_DIGEST)) != NULL
 319         && rsa_type != RSA_FLAG_TYPE_RSASSAPSS) {
 320         if (!OSSL_PARAM_set_utf8_string(p, RSA_DEFAULT_MD))
 321             return 0;
 322     }
 323
 324     /*
 325      * For non-RSA-PSS keys, we ignore the mandatory digest request
 326      * TODO(3.0) with RSA-OAEP keys, this may need to be amended
 327      */
 328     if ((p = OSSL_PARAM_locate(params,
 329                                OSSL_PKEY_PARAM_MANDATORY_DIGEST)) != NULL
 330         && rsa_type == RSA_FLAG_TYPE_RSASSAPSS) {
 331         const char *mdname = RSA_PSS_DEFAULT_MD;
 332
 333         if (!ossl_rsa_pss_params_30_is_unrestricted(pss_params)) {
 334             mdname =
 335                 ossl_rsa_oaeppss_nid2name(ossl_rsa_pss_params_30_hashalg(pss_params));
 336
 337             if (mdname == NULL || !OSSL_PARAM_set_utf8_string(p, mdname))
 338                 return 0;
 339         }
 340     }
 341     return (rsa_type != RSA_FLAG_TYPE_RSASSAPSS
 342             || ossl_rsa_pss_params_30_todata(pss_params, NULL, params))
 343         && ossl_rsa_todata(rsa, NULL, params);
 344 }
 345
 346 static const OSSL_PARAM rsa_params[] = {
 347     OSSL_PARAM_int(OSSL_PKEY_PARAM_BITS, NULL),
 348     OSSL_PARAM_int(OSSL_PKEY_PARAM_SECURITY_BITS, NULL),
 349     OSSL_PARAM_int(OSSL_PKEY_PARAM_MAX_SIZE, NULL),
 350     OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_DEFAULT_DIGEST, NULL, 0),
 351     RSA_KEY_TYPES()
 352     OSSL_PARAM_END
 353 };
 354
 355 static const OSSL_PARAM *rsa_gettable_params(void *provctx)
 356 {
 357     return rsa_params;
 358 }
 359
 360 static int rsa_validate(void *keydata, int selection)
 361 {
 362     RSA *rsa = keydata;
 363     int ok = 0;
 364
 365     if (!ossl_prov_is_running())
 366         return 0;
 367
 368     if ((selection & RSA_POSSIBLE_SELECTIONS) != 0)
 369         ok = 1;
 370
 371     /* If the whole key is selected, we do a pairwise validation */
 372     if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR)
 373         == OSSL_KEYMGMT_SELECT_KEYPAIR) {
 374         ok = ok && ossl_rsa_validate_pairwise(rsa);
 375     } else {
 376         if ((selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0)
 377             ok = ok && ossl_rsa_validate_private(rsa);
 378         if ((selection & OSSL_KEYMGMT_SELECT_PUBLIC_KEY) != 0)
 379             ok = ok && ossl_rsa_validate_public(rsa);
 380     }
 381     return ok;
 382 }
 383
 384 struct rsa_gen_ctx {
 385     OSSL_LIB_CTX *libctx;
 386     const char *propq;
 387
 388     int rsa_type;
 389
 390     size_t nbits;
 391     BIGNUM *pub_exp;
 392     size_t primes;
 393
 394     /* For PSS */
 395     RSA_PSS_PARAMS_30 pss_params;
 396
 397     /* For generation callback */
 398     OSSL_CALLBACK *cb;
 399     void *cbarg;
 400
 401 #if defined(FIPS_MODULE) && !defined(OPENSSL_NO_ACVP_TESTS)
 402     /* ACVP test parameters */
 403     OSSL_PARAM *acvp_test_params;
 404 #endif
 405 };
 406
 407 static int rsa_gencb(int p, int n, BN_GENCB *cb)
 408 {
 409     struct rsa_gen_ctx *gctx = BN_GENCB_get_arg(cb);
 410     OSSL_PARAM params[] = { OSSL_PARAM_END, OSSL_PARAM_END, OSSL_PARAM_END };
 411
 412     params[0] = OSSL_PARAM_construct_int(OSSL_GEN_PARAM_POTENTIAL, &p);
 413     params[1] = OSSL_PARAM_construct_int(OSSL_GEN_PARAM_ITERATION, &n);
 414     return gctx->cb(params, gctx->cbarg);
 415 }
 416
 417 static void *gen_init(void *provctx, int selection, int rsa_type)
 418 {
 419     OSSL_LIB_CTX *libctx = PROV_LIBCTX_OF(provctx);
 420     struct rsa_gen_ctx *gctx = NULL;
 421
 422     if (!ossl_prov_is_running())
 423         return NULL;
 424
 425     if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) == 0)
 426         return NULL;
 427
 428     if ((gctx = OPENSSL_zalloc(sizeof(*gctx))) != NULL) {
 429         gctx->libctx = libctx;
 430         if ((gctx->pub_exp = BN_new()) == NULL
 431             || !BN_set_word(gctx->pub_exp, RSA_F4)) {
 432             BN_free(gctx->pub_exp);
 433             OPENSSL_free(gctx);
 434             gctx = NULL;
 435         } else {
 436             gctx->nbits = 2048;
 437             gctx->primes = RSA_DEFAULT_PRIME_NUM;
 438             gctx->rsa_type = rsa_type;
 439         }
 440     }
 441     return gctx;
 442 }
 443
 444 static void *rsa_gen_init(void *provctx, int selection)
 445 {
 446     return gen_init(provctx, selection, RSA_FLAG_TYPE_RSA);
 447 }
 448
 449 static void *rsapss_gen_init(void *provctx, int selection)
 450 {
 451     return gen_init(provctx, selection, RSA_FLAG_TYPE_RSASSAPSS);
 452 }
 453
 454 /*
 455  * This function is common for all RSA sub-types, to detect possible
 456  * misuse, such as PSS parameters being passed when a plain RSA key
 457  * is generated.
 458  */
 459 static int rsa_gen_set_params(void *genctx, const OSSL_PARAM params[])
 460 {
 461     struct rsa_gen_ctx *gctx = genctx;
 462     const OSSL_PARAM *p;
 463
 464     if ((p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_RSA_BITS)) != NULL
 465         && !OSSL_PARAM_get_size_t(p, &gctx->nbits))
 466         return 0;
 467     if ((p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_RSA_PRIMES)) != NULL
 468         && !OSSL_PARAM_get_size_t(p, &gctx->primes))
 469         return 0;
 470     if ((p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_RSA_E)) != NULL
 471         && !OSSL_PARAM_get_BN(p, &gctx->pub_exp))
 472         return 0;
 473     /* Only attempt to get PSS parameters when generating an RSA-PSS key */
 474     if (gctx->rsa_type == RSA_FLAG_TYPE_RSASSAPSS
 475         && !pss_params_fromdata(&gctx->pss_params, params, gctx->rsa_type,
 476                                 gctx->libctx))
 477         return 0;
 478 #if defined(FIPS_MODULE) && !defined(OPENSSL_NO_ACVP_TESTS)
 479     /* Any ACVP test related parameters are copied into a params[] */
 480     if (!rsa_acvp_test_gen_params_new(&gctx->acvp_test_params, params))
 481         return 0;
 482 #endif
 483     return 1;
 484 }
 485
 486 #define rsa_gen_basic                                           \
 487     OSSL_PARAM_size_t(OSSL_PKEY_PARAM_RSA_BITS, NULL),          \
 488     OSSL_PARAM_size_t(OSSL_PKEY_PARAM_RSA_PRIMES, NULL),        \
 489     OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_E, NULL, 0)
 490
 491 /*
 492  * The following must be kept in sync with ossl_rsa_pss_params_30_fromdata()
 493  * in crypto/rsa/rsa_backend.c
 494  */
 495 #define rsa_gen_pss                                                     \
 496     OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_RSA_DIGEST, NULL, 0),        \
 497     OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_RSA_DIGEST_PROPS, NULL, 0),  \
 498     OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_RSA_MASKGENFUNC, NULL, 0),   \
 499     OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_RSA_MGF1_DIGEST, NULL, 0),   \
 500     OSSL_PARAM_int(OSSL_PKEY_PARAM_RSA_PSS_SALTLEN, NULL)
 501
 502 static const OSSL_PARAM *rsa_gen_settable_params(void *provctx)
 503 {
 504     static OSSL_PARAM settable[] = {
 505         rsa_gen_basic,
 506         OSSL_PARAM_END
 507     };
 508
 509     return settable;
 510 }
 511
 512 static const OSSL_PARAM *rsapss_gen_settable_params(void *provctx)
 513 {
 514     static OSSL_PARAM settable[] = {
 515         rsa_gen_basic,
 516         rsa_gen_pss,
 517         OSSL_PARAM_END
 518     };
 519
 520     return settable;
 521 }
 522
 523 static void *rsa_gen(void *genctx, OSSL_CALLBACK *osslcb, void *cbarg)
 524 {
 525     struct rsa_gen_ctx *gctx = genctx;
 526     RSA *rsa = NULL, *rsa_tmp = NULL;
 527     BN_GENCB *gencb = NULL;
 528
 529     if (!ossl_prov_is_running() || gctx == NULL)
 530         return NULL;
 531
 532     switch (gctx->rsa_type) {
 533     case RSA_FLAG_TYPE_RSA:
 534         /* For plain RSA keys, PSS parameters must not be set */
 535         if (!ossl_rsa_pss_params_30_is_unrestricted(&gctx->pss_params))
 536             goto err;
 537         break;
 538     case RSA_FLAG_TYPE_RSASSAPSS:
 539         /*
 540          * For plain RSA-PSS keys, PSS parameters may be set but don't have
 541          * to, so not check.
 542          */
 543         break;
 544     default:
 545         /* Unsupported RSA key sub-type... */
 546         return NULL;
 547     }
 548
 549     if ((rsa_tmp = ossl_rsa_new_with_ctx(gctx->libctx)) == NULL)
 550         return NULL;
 551
 552     gctx->cb = osslcb;
 553     gctx->cbarg = cbarg;
 554     gencb = BN_GENCB_new();
 555     if (gencb != NULL)
 556         BN_GENCB_set(gencb, rsa_gencb, genctx);
 557
 558 #if defined(FIPS_MODULE) && !defined(OPENSSL_NO_ACVP_TESTS)
 559     if (gctx->acvp_test_params != NULL) {
 560         if (!rsa_acvp_test_set_params(rsa_tmp, gctx->acvp_test_params))
 561             goto err;
 562     }
 563 #endif
 564
 565     if (!RSA_generate_multi_prime_key(rsa_tmp,
 566                                       (int)gctx->nbits, (int)gctx->primes,
 567                                       gctx->pub_exp, gencb))
 568         goto err;
 569
 570     if (!ossl_rsa_pss_params_30_copy(ossl_rsa_get0_pss_params_30(rsa_tmp),
 571                                      &gctx->pss_params))
 572         goto err;
 573
 574     RSA_clear_flags(rsa_tmp, RSA_FLAG_TYPE_MASK);
 575     RSA_set_flags(rsa_tmp, gctx->rsa_type);
 576
 577     rsa = rsa_tmp;
 578     rsa_tmp = NULL;
 579  err:
 580     BN_GENCB_free(gencb);
 581     RSA_free(rsa_tmp);
 582     return rsa;
 583 }
 584
 585 static void rsa_gen_cleanup(void *genctx)
 586 {
 587     struct rsa_gen_ctx *gctx = genctx;
 588
 589     if (gctx == NULL)
 590         return;
 591 #if defined(FIPS_MODULE) && !defined(OPENSSL_NO_ACVP_TESTS)
 592     rsa_acvp_test_gen_params_free(gctx->acvp_test_params);
 593     gctx->acvp_test_params = NULL;
 594 #endif
 595     BN_clear_free(gctx->pub_exp);
 596     OPENSSL_free(gctx);
 597 }
 598
 599 void *rsa_load(const void *reference, size_t reference_sz)
 600 {
 601     RSA *rsa = NULL;
 602
 603     if (ossl_prov_is_running() && reference_sz == sizeof(rsa)) {
 604         /* The contents of the reference is the address to our object */
 605         rsa = *(RSA **)reference;
 606         /* We grabbed, so we detach it */
 607         *(RSA **)reference = NULL;
 608         return rsa;
 609     }
 610     return NULL;
 611 }
 612
 613 /* For any RSA key, we use the "RSA" algorithms regardless of sub-type. */
 614 static const char *rsa_query_operation_name(int operation_id)
 615 {
 616     return "RSA";
 617 }
 618
 619 const OSSL_DISPATCH ossl_rsa_keymgmt_functions[] = {
 620     { OSSL_FUNC_KEYMGMT_NEW, (void (*)(void))rsa_newdata },
 621     { OSSL_FUNC_KEYMGMT_GEN_INIT, (void (*)(void))rsa_gen_init },
 622     { OSSL_FUNC_KEYMGMT_GEN_SET_PARAMS,
 623       (void (*)(void))rsa_gen_set_params },
 624     { OSSL_FUNC_KEYMGMT_GEN_SETTABLE_PARAMS,
 625       (void (*)(void))rsa_gen_settable_params },
 626     { OSSL_FUNC_KEYMGMT_GEN, (void (*)(void))rsa_gen },
 627     { OSSL_FUNC_KEYMGMT_GEN_CLEANUP, (void (*)(void))rsa_gen_cleanup },
 628     { OSSL_FUNC_KEYMGMT_LOAD, (void (*)(void))rsa_load },
 629     { OSSL_FUNC_KEYMGMT_FREE, (void (*)(void))rsa_freedata },
 630     { OSSL_FUNC_KEYMGMT_GET_PARAMS, (void (*) (void))rsa_get_params },
 631     { OSSL_FUNC_KEYMGMT_GETTABLE_PARAMS, (void (*) (void))rsa_gettable_params },
 632     { OSSL_FUNC_KEYMGMT_HAS, (void (*)(void))rsa_has },
 633     { OSSL_FUNC_KEYMGMT_MATCH, (void (*)(void))rsa_match },
 634     { OSSL_FUNC_KEYMGMT_VALIDATE, (void (*)(void))rsa_validate },
 635     { OSSL_FUNC_KEYMGMT_IMPORT, (void (*)(void))rsa_import },
 636     { OSSL_FUNC_KEYMGMT_IMPORT_TYPES, (void (*)(void))rsa_import_types },
 637     { OSSL_FUNC_KEYMGMT_EXPORT, (void (*)(void))rsa_export },
 638     { OSSL_FUNC_KEYMGMT_EXPORT_TYPES, (void (*)(void))rsa_export_types },
 639     { 0, NULL }
 640 };
 641
 642 const OSSL_DISPATCH ossl_rsapss_keymgmt_functions[] = {
 643     { OSSL_FUNC_KEYMGMT_NEW, (void (*)(void))rsapss_newdata },
 644     { OSSL_FUNC_KEYMGMT_GEN_INIT, (void (*)(void))rsapss_gen_init },
 645     { OSSL_FUNC_KEYMGMT_GEN_SET_PARAMS, (void (*)(void))rsa_gen_set_params },
 646     { OSSL_FUNC_KEYMGMT_GEN_SETTABLE_PARAMS,
 647       (void (*)(void))rsapss_gen_settable_params },
 648     { OSSL_FUNC_KEYMGMT_GEN, (void (*)(void))rsa_gen },
 649     { OSSL_FUNC_KEYMGMT_GEN_CLEANUP, (void (*)(void))rsa_gen_cleanup },
 650     { OSSL_FUNC_KEYMGMT_LOAD, (void (*)(void))rsa_load },
 651     { OSSL_FUNC_KEYMGMT_FREE, (void (*)(void))rsa_freedata },
 652     { OSSL_FUNC_KEYMGMT_GET_PARAMS, (void (*) (void))rsa_get_params },
 653     { OSSL_FUNC_KEYMGMT_GETTABLE_PARAMS, (void (*) (void))rsa_gettable_params },
 654     { OSSL_FUNC_KEYMGMT_HAS, (void (*)(void))rsa_has },
 655     { OSSL_FUNC_KEYMGMT_MATCH, (void (*)(void))rsa_match },
 656     { OSSL_FUNC_KEYMGMT_VALIDATE, (void (*)(void))rsa_validate },
 657     { OSSL_FUNC_KEYMGMT_IMPORT, (void (*)(void))rsa_import },
 658     { OSSL_FUNC_KEYMGMT_IMPORT_TYPES, (void (*)(void))rsa_import_types },
 659     { OSSL_FUNC_KEYMGMT_EXPORT, (void (*)(void))rsa_export },
 660     { OSSL_FUNC_KEYMGMT_EXPORT_TYPES, (void (*)(void))rsa_export_types },
 661     { OSSL_FUNC_KEYMGMT_QUERY_OPERATION_NAME,
 662       (void (*)(void))rsa_query_operation_name },
 663     { 0, NULL }
 664 };