| /* |
| * Copyright 2019-2021 The OpenSSL Project Authors. All Rights Reserved. |
| * |
| * Licensed under the Apache License 2.0 (the "License"). You may not use |
| * this file except in compliance with the License. You can obtain a copy |
| * in the file LICENSE in the source distribution or at |
| * https://www.openssl.org/source/license.html |
| */ |
| |
| /* |
| * RSA low level APIs are deprecated for public use, but still ok for |
| * internal use. |
| */ |
| #include "internal/deprecated.h" |
| |
| #include <openssl/core_dispatch.h> |
| #include <openssl/core_names.h> |
| #include <openssl/bn.h> |
| #include <openssl/err.h> |
| #include <openssl/rsa.h> |
| #include <openssl/evp.h> |
| #include <openssl/proverr.h> |
| #include "prov/implementations.h" |
| #include "prov/providercommon.h" |
| #include "prov/provider_ctx.h" |
| #include "crypto/rsa.h" |
| #include "crypto/cryptlib.h" |
| #include "internal/param_build_set.h" |
| |
| static OSSL_FUNC_keymgmt_new_fn rsa_newdata; |
| static OSSL_FUNC_keymgmt_new_fn rsapss_newdata; |
| static OSSL_FUNC_keymgmt_gen_init_fn rsa_gen_init; |
| static OSSL_FUNC_keymgmt_gen_init_fn rsapss_gen_init; |
| static OSSL_FUNC_keymgmt_gen_set_params_fn rsa_gen_set_params; |
| static OSSL_FUNC_keymgmt_gen_settable_params_fn rsa_gen_settable_params; |
| static OSSL_FUNC_keymgmt_gen_settable_params_fn rsapss_gen_settable_params; |
| static OSSL_FUNC_keymgmt_gen_fn rsa_gen; |
| static OSSL_FUNC_keymgmt_gen_cleanup_fn rsa_gen_cleanup; |
| static OSSL_FUNC_keymgmt_load_fn rsa_load; |
| static OSSL_FUNC_keymgmt_load_fn rsapss_load; |
| static OSSL_FUNC_keymgmt_free_fn rsa_freedata; |
| static OSSL_FUNC_keymgmt_get_params_fn rsa_get_params; |
| static OSSL_FUNC_keymgmt_gettable_params_fn rsa_gettable_params; |
| static OSSL_FUNC_keymgmt_has_fn rsa_has; |
| static OSSL_FUNC_keymgmt_match_fn rsa_match; |
| static OSSL_FUNC_keymgmt_validate_fn rsa_validate; |
| static OSSL_FUNC_keymgmt_import_fn rsa_import; |
| static OSSL_FUNC_keymgmt_import_types_fn rsa_import_types; |
| static OSSL_FUNC_keymgmt_export_fn rsa_export; |
| static OSSL_FUNC_keymgmt_export_types_fn rsa_export_types; |
| static OSSL_FUNC_keymgmt_query_operation_name_fn rsa_query_operation_name; |
| |
| #define RSA_DEFAULT_MD "SHA256" |
| #define RSA_PSS_DEFAULT_MD OSSL_DIGEST_NAME_SHA1 |
| #define RSA_POSSIBLE_SELECTIONS \ |
| (OSSL_KEYMGMT_SELECT_KEYPAIR | OSSL_KEYMGMT_SELECT_OTHER_PARAMETERS) |
| |
| DEFINE_STACK_OF(BIGNUM) |
| DEFINE_SPECIAL_STACK_OF_CONST(BIGNUM_const, BIGNUM) |
| |
| static int pss_params_fromdata(RSA_PSS_PARAMS_30 *pss_params, int *defaults_set, |
| const OSSL_PARAM params[], int rsa_type, |
| OSSL_LIB_CTX *libctx) |
| { |
| if (!ossl_rsa_pss_params_30_fromdata(pss_params, defaults_set, |
| params, libctx)) |
| return 0; |
| |
| /* If not a PSS type RSA, sending us PSS parameters is wrong */ |
| if (rsa_type != RSA_FLAG_TYPE_RSASSAPSS |
| && !ossl_rsa_pss_params_30_is_unrestricted(pss_params)) |
| return 0; |
| |
| return 1; |
| } |
| |
| static void *rsa_newdata(void *provctx) |
| { |
| OSSL_LIB_CTX *libctx = PROV_LIBCTX_OF(provctx); |
| RSA *rsa; |
| |
| if (!ossl_prov_is_running()) |
| return NULL; |
| |
| rsa = ossl_rsa_new_with_ctx(libctx); |
| if (rsa != NULL) { |
| RSA_clear_flags(rsa, RSA_FLAG_TYPE_MASK); |
| RSA_set_flags(rsa, RSA_FLAG_TYPE_RSA); |
| } |
| return rsa; |
| } |
| |
| static void *rsapss_newdata(void *provctx) |
| { |
| OSSL_LIB_CTX *libctx = PROV_LIBCTX_OF(provctx); |
| RSA *rsa; |
| |
| if (!ossl_prov_is_running()) |
| return NULL; |
| |
| rsa = ossl_rsa_new_with_ctx(libctx); |
| if (rsa != NULL) { |
| RSA_clear_flags(rsa, RSA_FLAG_TYPE_MASK); |
| RSA_set_flags(rsa, RSA_FLAG_TYPE_RSASSAPSS); |
| } |
| return rsa; |
| } |
| |
| static void rsa_freedata(void *keydata) |
| { |
| RSA_free(keydata); |
| } |
| |
| static int rsa_has(const void *keydata, int selection) |
| { |
| const RSA *rsa = keydata; |
| int ok = 1; |
| |
| if (rsa == NULL || !ossl_prov_is_running()) |
| return 0; |
| if ((selection & RSA_POSSIBLE_SELECTIONS) == 0) |
| return 1; /* the selection is not missing */ |
| |
| if ((selection & OSSL_KEYMGMT_SELECT_OTHER_PARAMETERS) != 0) |
| /* This will change with OAEP */ |
| ok = ok && (RSA_test_flags(rsa, RSA_FLAG_TYPE_RSASSAPSS) != 0); |
| if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0) |
| ok = ok && (RSA_get0_e(rsa) != NULL); |
| if ((selection & OSSL_KEYMGMT_SELECT_PUBLIC_KEY) != 0) |
| ok = ok && (RSA_get0_n(rsa) != NULL); |
| if ((selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0) |
| ok = ok && (RSA_get0_d(rsa) != NULL); |
| return ok; |
| } |
| |
| static int rsa_match(const void *keydata1, const void *keydata2, int selection) |
| { |
| const RSA *rsa1 = keydata1; |
| const RSA *rsa2 = keydata2; |
| int ok = 1; |
| |
| if (!ossl_prov_is_running()) |
| return 0; |
| |
| /* There is always an |e| */ |
| ok = ok && BN_cmp(RSA_get0_e(rsa1), RSA_get0_e(rsa2)) == 0; |
| if ((selection & OSSL_KEYMGMT_SELECT_PUBLIC_KEY) != 0) |
| ok = ok && BN_cmp(RSA_get0_n(rsa1), RSA_get0_n(rsa2)) == 0; |
| if ((selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0) |
| ok = ok && BN_cmp(RSA_get0_d(rsa1), RSA_get0_d(rsa2)) == 0; |
| return ok; |
| } |
| |
| static int rsa_import(void *keydata, int selection, const OSSL_PARAM params[]) |
| { |
| RSA *rsa = keydata; |
| int rsa_type; |
| int ok = 1; |
| int pss_defaults_set = 0; |
| |
| if (!ossl_prov_is_running() || rsa == NULL) |
| return 0; |
| |
| if ((selection & RSA_POSSIBLE_SELECTIONS) == 0) |
| return 0; |
| |
| rsa_type = RSA_test_flags(rsa, RSA_FLAG_TYPE_MASK); |
| |
| if ((selection & OSSL_KEYMGMT_SELECT_OTHER_PARAMETERS) != 0) |
| ok = ok && pss_params_fromdata(ossl_rsa_get0_pss_params_30(rsa), |
| &pss_defaults_set, |
| params, rsa_type, |
| ossl_rsa_get0_libctx(rsa)); |
| if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0) |
| ok = ok && ossl_rsa_fromdata(rsa, params); |
| |
| return ok; |
| } |
| |
| static int rsa_export(void *keydata, int selection, |
| OSSL_CALLBACK *param_callback, void *cbarg) |
| { |
| RSA *rsa = keydata; |
| const RSA_PSS_PARAMS_30 *pss_params = ossl_rsa_get0_pss_params_30(rsa); |
| OSSL_PARAM_BLD *tmpl; |
| OSSL_PARAM *params = NULL; |
| int ok = 1; |
| |
| if (!ossl_prov_is_running() || rsa == NULL) |
| return 0; |
| |
| if ((selection & RSA_POSSIBLE_SELECTIONS) == 0) |
| return 0; |
| |
| tmpl = OSSL_PARAM_BLD_new(); |
| if (tmpl == NULL) |
| return 0; |
| |
| if ((selection & OSSL_KEYMGMT_SELECT_OTHER_PARAMETERS) != 0) |
| ok = ok && (ossl_rsa_pss_params_30_is_unrestricted(pss_params) |
| || ossl_rsa_pss_params_30_todata(pss_params, tmpl, NULL)); |
| if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0) |
| ok = ok && ossl_rsa_todata(rsa, tmpl, NULL); |
| |
| if (!ok |
| || (params = OSSL_PARAM_BLD_to_param(tmpl)) == NULL) |
| goto err; |
| |
| ok = param_callback(params, cbarg); |
| OSSL_PARAM_free(params); |
| err: |
| OSSL_PARAM_BLD_free(tmpl); |
| return ok; |
| } |
| |
| #ifdef FIPS_MODULE |
| /* In fips mode there are no multi-primes. */ |
| # define RSA_KEY_MP_TYPES() \ |
| OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR1, NULL, 0), \ |
| OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR2, NULL, 0), \ |
| OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT1, NULL, 0), \ |
| OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT2, NULL, 0), \ |
| OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_COEFFICIENT1, NULL, 0), |
| #else |
| /* |
| * We allow up to 10 prime factors (starting with p, q). |
| * NOTE: there is only 9 OSSL_PKEY_PARAM_RSA_COEFFICIENT |
| */ |
| # define RSA_KEY_MP_TYPES() \ |
| OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR1, NULL, 0), \ |
| OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR2, NULL, 0), \ |
| OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR3, NULL, 0), \ |
| OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR4, NULL, 0), \ |
| OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR5, NULL, 0), \ |
| OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR6, NULL, 0), \ |
| OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR7, NULL, 0), \ |
| OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR8, NULL, 0), \ |
| OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR9, NULL, 0), \ |
| OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR10, NULL, 0), \ |
| OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT1, NULL, 0), \ |
| OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT2, NULL, 0), \ |
| OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT3, NULL, 0), \ |
| OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT4, NULL, 0), \ |
| OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT5, NULL, 0), \ |
| OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT6, NULL, 0), \ |
| OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT7, NULL, 0), \ |
| OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT8, NULL, 0), \ |
| OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT9, NULL, 0), \ |
| OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT10, NULL, 0), \ |
| OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_COEFFICIENT1, NULL, 0), \ |
| OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_COEFFICIENT2, NULL, 0), \ |
| OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_COEFFICIENT3, NULL, 0), \ |
| OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_COEFFICIENT4, NULL, 0), \ |
| OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_COEFFICIENT5, NULL, 0), \ |
| OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_COEFFICIENT6, NULL, 0), \ |
| OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_COEFFICIENT7, NULL, 0), \ |
| OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_COEFFICIENT8, NULL, 0), \ |
| OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_COEFFICIENT9, NULL, 0), |
| #endif |
| |
| #define RSA_KEY_TYPES() \ |
| OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_N, NULL, 0), \ |
| OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_E, NULL, 0), \ |
| OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_D, NULL, 0), \ |
| RSA_KEY_MP_TYPES() |
| |
| /* |
| * This provider can export everything in an RSA key, so we use the exact |
| * same type description for export as for import. Other providers might |
| * choose to import full keys, but only export the public parts, and will |
| * therefore have the importkey_types and importkey_types functions return |
| * different arrays. |
| */ |
| static const OSSL_PARAM rsa_key_types[] = { |
| RSA_KEY_TYPES() |
| OSSL_PARAM_END |
| }; |
| /* |
| * We lied about the amount of factors, exponents and coefficients, the |
| * export and import functions can really deal with an infinite amount |
| * of these numbers. However, RSA keys with too many primes are futile, |
| * so we at least pretend to have some limits. |
| */ |
| |
| static const OSSL_PARAM *rsa_imexport_types(int selection) |
| { |
| if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0) |
| return rsa_key_types; |
| return NULL; |
| } |
| |
| static const OSSL_PARAM *rsa_import_types(int selection) |
| { |
| return rsa_imexport_types(selection); |
| } |
| |
| static const OSSL_PARAM *rsa_export_types(int selection) |
| { |
| return rsa_imexport_types(selection); |
| } |
| |
| static int rsa_get_params(void *key, OSSL_PARAM params[]) |
| { |
| RSA *rsa = key; |
| const RSA_PSS_PARAMS_30 *pss_params = ossl_rsa_get0_pss_params_30(rsa); |
| int rsa_type = RSA_test_flags(rsa, RSA_FLAG_TYPE_MASK); |
| OSSL_PARAM *p; |
| |
| if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_BITS)) != NULL |
| && !OSSL_PARAM_set_int(p, RSA_bits(rsa))) |
| return 0; |
| if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_SECURITY_BITS)) != NULL |
| && !OSSL_PARAM_set_int(p, RSA_security_bits(rsa))) |
| return 0; |
| if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_MAX_SIZE)) != NULL |
| && !OSSL_PARAM_set_int(p, RSA_size(rsa))) |
| return 0; |
| |
| /* |
| * For restricted RSA-PSS keys, we ignore the default digest request. |
| * With RSA-OAEP keys, this may need to be amended. |
| */ |
| if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_DEFAULT_DIGEST)) != NULL |
| && (rsa_type != RSA_FLAG_TYPE_RSASSAPSS |
| || ossl_rsa_pss_params_30_is_unrestricted(pss_params))) { |
| if (!OSSL_PARAM_set_utf8_string(p, RSA_DEFAULT_MD)) |
| return 0; |
| } |
| |
| /* |
| * For non-RSA-PSS keys, we ignore the mandatory digest request. |
| * With RSA-OAEP keys, this may need to be amended. |
| */ |
| if ((p = OSSL_PARAM_locate(params, |
| OSSL_PKEY_PARAM_MANDATORY_DIGEST)) != NULL |
| && rsa_type == RSA_FLAG_TYPE_RSASSAPSS |
| && !ossl_rsa_pss_params_30_is_unrestricted(pss_params)) { |
| const char *mdname = |
| ossl_rsa_oaeppss_nid2name(ossl_rsa_pss_params_30_hashalg(pss_params)); |
| |
| if (mdname == NULL || !OSSL_PARAM_set_utf8_string(p, mdname)) |
| return 0; |
| } |
| return (rsa_type != RSA_FLAG_TYPE_RSASSAPSS |
| || ossl_rsa_pss_params_30_todata(pss_params, NULL, params)) |
| && ossl_rsa_todata(rsa, NULL, params); |
| } |
| |
| static const OSSL_PARAM rsa_params[] = { |
| OSSL_PARAM_int(OSSL_PKEY_PARAM_BITS, NULL), |
| OSSL_PARAM_int(OSSL_PKEY_PARAM_SECURITY_BITS, NULL), |
| OSSL_PARAM_int(OSSL_PKEY_PARAM_MAX_SIZE, NULL), |
| OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_DEFAULT_DIGEST, NULL, 0), |
| RSA_KEY_TYPES() |
| OSSL_PARAM_END |
| }; |
| |
| static const OSSL_PARAM *rsa_gettable_params(void *provctx) |
| { |
| return rsa_params; |
| } |
| |
| static int rsa_validate(const void *keydata, int selection, int checktype) |
| { |
| const RSA *rsa = keydata; |
| int ok = 1; |
| |
| if (!ossl_prov_is_running()) |
| return 0; |
| |
| if ((selection & RSA_POSSIBLE_SELECTIONS) == 0) |
| return 1; /* nothing to validate */ |
| |
| /* If the whole key is selected, we do a pairwise validation */ |
| if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) |
| == OSSL_KEYMGMT_SELECT_KEYPAIR) { |
| ok = ok && ossl_rsa_validate_pairwise(rsa); |
| } else { |
| if ((selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0) |
| ok = ok && ossl_rsa_validate_private(rsa); |
| if ((selection & OSSL_KEYMGMT_SELECT_PUBLIC_KEY) != 0) |
| ok = ok && ossl_rsa_validate_public(rsa); |
| } |
| return ok; |
| } |
| |
| struct rsa_gen_ctx { |
| OSSL_LIB_CTX *libctx; |
| const char *propq; |
| |
| int rsa_type; |
| |
| size_t nbits; |
| BIGNUM *pub_exp; |
| size_t primes; |
| |
| /* For PSS */ |
| RSA_PSS_PARAMS_30 pss_params; |
| int pss_defaults_set; |
| |
| /* For generation callback */ |
| OSSL_CALLBACK *cb; |
| void *cbarg; |
| |
| #if defined(FIPS_MODULE) && !defined(OPENSSL_NO_ACVP_TESTS) |
| /* ACVP test parameters */ |
| OSSL_PARAM *acvp_test_params; |
| #endif |
| }; |
| |
| static int rsa_gencb(int p, int n, BN_GENCB *cb) |
| { |
| struct rsa_gen_ctx *gctx = BN_GENCB_get_arg(cb); |
| OSSL_PARAM params[] = { OSSL_PARAM_END, OSSL_PARAM_END, OSSL_PARAM_END }; |
| |
| params[0] = OSSL_PARAM_construct_int(OSSL_GEN_PARAM_POTENTIAL, &p); |
| params[1] = OSSL_PARAM_construct_int(OSSL_GEN_PARAM_ITERATION, &n); |
| return gctx->cb(params, gctx->cbarg); |
| } |
| |
| static void *gen_init(void *provctx, int selection, int rsa_type, |
| const OSSL_PARAM params[]) |
| { |
| OSSL_LIB_CTX *libctx = PROV_LIBCTX_OF(provctx); |
| struct rsa_gen_ctx *gctx = NULL; |
| |
| if (!ossl_prov_is_running()) |
| return NULL; |
| |
| if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) == 0) |
| return NULL; |
| |
| if ((gctx = OPENSSL_zalloc(sizeof(*gctx))) != NULL) { |
| gctx->libctx = libctx; |
| if ((gctx->pub_exp = BN_new()) == NULL |
| || !BN_set_word(gctx->pub_exp, RSA_F4)) { |
| BN_free(gctx->pub_exp); |
| OPENSSL_free(gctx); |
| return NULL; |
| } |
| gctx->nbits = 2048; |
| gctx->primes = RSA_DEFAULT_PRIME_NUM; |
| gctx->rsa_type = rsa_type; |
| } |
| if (!rsa_gen_set_params(gctx, params)) { |
| OPENSSL_free(gctx); |
| return NULL; |
| } |
| return gctx; |
| } |
| |
| static void *rsa_gen_init(void *provctx, int selection, |
| const OSSL_PARAM params[]) |
| { |
| return gen_init(provctx, selection, RSA_FLAG_TYPE_RSA, params); |
| } |
| |
| static void *rsapss_gen_init(void *provctx, int selection, |
| const OSSL_PARAM params[]) |
| { |
| return gen_init(provctx, selection, RSA_FLAG_TYPE_RSASSAPSS, params); |
| } |
| |
| /* |
| * This function is common for all RSA sub-types, to detect possible |
| * misuse, such as PSS parameters being passed when a plain RSA key |
| * is generated. |
| */ |
| static int rsa_gen_set_params(void *genctx, const OSSL_PARAM params[]) |
| { |
| struct rsa_gen_ctx *gctx = genctx; |
| const OSSL_PARAM *p; |
| |
| if (params == NULL) |
| return 1; |
| |
| if ((p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_RSA_BITS)) != NULL) { |
| if (!OSSL_PARAM_get_size_t(p, &gctx->nbits)) |
| return 0; |
| if (gctx->nbits < RSA_MIN_MODULUS_BITS) { |
| ERR_raise(ERR_LIB_PROV, PROV_R_KEY_SIZE_TOO_SMALL); |
| return 0; |
| } |
| } |
| if ((p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_RSA_PRIMES)) != NULL |
| && !OSSL_PARAM_get_size_t(p, &gctx->primes)) |
| return 0; |
| if ((p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_RSA_E)) != NULL |
| && !OSSL_PARAM_get_BN(p, &gctx->pub_exp)) |
| return 0; |
| /* Only attempt to get PSS parameters when generating an RSA-PSS key */ |
| if (gctx->rsa_type == RSA_FLAG_TYPE_RSASSAPSS |
| && !pss_params_fromdata(&gctx->pss_params, &gctx->pss_defaults_set, params, |
| gctx->rsa_type, gctx->libctx)) |
| return 0; |
| #if defined(FIPS_MODULE) && !defined(OPENSSL_NO_ACVP_TESTS) |
| /* Any ACVP test related parameters are copied into a params[] */ |
| if (!ossl_rsa_acvp_test_gen_params_new(&gctx->acvp_test_params, params)) |
| return 0; |
| #endif |
| return 1; |
| } |
| |
| #define rsa_gen_basic \ |
| OSSL_PARAM_size_t(OSSL_PKEY_PARAM_RSA_BITS, NULL), \ |
| OSSL_PARAM_size_t(OSSL_PKEY_PARAM_RSA_PRIMES, NULL), \ |
| OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_E, NULL, 0) |
| |
| /* |
| * The following must be kept in sync with ossl_rsa_pss_params_30_fromdata() |
| * in crypto/rsa/rsa_backend.c |
| */ |
| #define rsa_gen_pss \ |
| OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_RSA_DIGEST, NULL, 0), \ |
| OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_RSA_DIGEST_PROPS, NULL, 0), \ |
| OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_RSA_MASKGENFUNC, NULL, 0), \ |
| OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_RSA_MGF1_DIGEST, NULL, 0), \ |
| OSSL_PARAM_int(OSSL_PKEY_PARAM_RSA_PSS_SALTLEN, NULL) |
| |
| static const OSSL_PARAM *rsa_gen_settable_params(ossl_unused void *genctx, |
| ossl_unused void *provctx) |
| { |
| static OSSL_PARAM settable[] = { |
| rsa_gen_basic, |
| OSSL_PARAM_END |
| }; |
| |
| return settable; |
| } |
| |
| static const OSSL_PARAM *rsapss_gen_settable_params(ossl_unused void *genctx, |
| ossl_unused void *provctx) |
| { |
| static OSSL_PARAM settable[] = { |
| rsa_gen_basic, |
| rsa_gen_pss, |
| OSSL_PARAM_END |
| }; |
| |
| return settable; |
| } |
| |
| static void *rsa_gen(void *genctx, OSSL_CALLBACK *osslcb, void *cbarg) |
| { |
| struct rsa_gen_ctx *gctx = genctx; |
| RSA *rsa = NULL, *rsa_tmp = NULL; |
| BN_GENCB *gencb = NULL; |
| |
| if (!ossl_prov_is_running() || gctx == NULL) |
| return NULL; |
| |
| switch (gctx->rsa_type) { |
| case RSA_FLAG_TYPE_RSA: |
| /* For plain RSA keys, PSS parameters must not be set */ |
| if (!ossl_rsa_pss_params_30_is_unrestricted(&gctx->pss_params)) |
| goto err; |
| break; |
| case RSA_FLAG_TYPE_RSASSAPSS: |
| /* |
| * For plain RSA-PSS keys, PSS parameters may be set but don't have |
| * to, so not check. |
| */ |
| break; |
| default: |
| /* Unsupported RSA key sub-type... */ |
| return NULL; |
| } |
| |
| if ((rsa_tmp = ossl_rsa_new_with_ctx(gctx->libctx)) == NULL) |
| return NULL; |
| |
| gctx->cb = osslcb; |
| gctx->cbarg = cbarg; |
| gencb = BN_GENCB_new(); |
| if (gencb != NULL) |
| BN_GENCB_set(gencb, rsa_gencb, genctx); |
| |
| #if defined(FIPS_MODULE) && !defined(OPENSSL_NO_ACVP_TESTS) |
| if (gctx->acvp_test_params != NULL) { |
| if (!ossl_rsa_acvp_test_set_params(rsa_tmp, gctx->acvp_test_params)) |
| goto err; |
| } |
| #endif |
| |
| if (!RSA_generate_multi_prime_key(rsa_tmp, |
| (int)gctx->nbits, (int)gctx->primes, |
| gctx->pub_exp, gencb)) |
| goto err; |
| |
| if (!ossl_rsa_pss_params_30_copy(ossl_rsa_get0_pss_params_30(rsa_tmp), |
| &gctx->pss_params)) |
| goto err; |
| |
| RSA_clear_flags(rsa_tmp, RSA_FLAG_TYPE_MASK); |
| RSA_set_flags(rsa_tmp, gctx->rsa_type); |
| |
| rsa = rsa_tmp; |
| rsa_tmp = NULL; |
| err: |
| BN_GENCB_free(gencb); |
| RSA_free(rsa_tmp); |
| return rsa; |
| } |
| |
| static void rsa_gen_cleanup(void *genctx) |
| { |
| struct rsa_gen_ctx *gctx = genctx; |
| |
| if (gctx == NULL) |
| return; |
| #if defined(FIPS_MODULE) && !defined(OPENSSL_NO_ACVP_TESTS) |
| ossl_rsa_acvp_test_gen_params_free(gctx->acvp_test_params); |
| gctx->acvp_test_params = NULL; |
| #endif |
| BN_clear_free(gctx->pub_exp); |
| OPENSSL_free(gctx); |
| } |
| |
| static void *common_load(const void *reference, size_t reference_sz, |
| int expected_rsa_type) |
| { |
| RSA *rsa = NULL; |
| |
| if (ossl_prov_is_running() && reference_sz == sizeof(rsa)) { |
| /* The contents of the reference is the address to our object */ |
| rsa = *(RSA **)reference; |
| |
| if (RSA_test_flags(rsa, RSA_FLAG_TYPE_MASK) != expected_rsa_type) |
| return NULL; |
| |
| /* We grabbed, so we detach it */ |
| *(RSA **)reference = NULL; |
| return rsa; |
| } |
| return NULL; |
| } |
| |
| static void *rsa_load(const void *reference, size_t reference_sz) |
| { |
| return common_load(reference, reference_sz, RSA_FLAG_TYPE_RSA); |
| } |
| |
| static void *rsapss_load(const void *reference, size_t reference_sz) |
| { |
| return common_load(reference, reference_sz, RSA_FLAG_TYPE_RSASSAPSS); |
| } |
| |
| /* For any RSA key, we use the "RSA" algorithms regardless of sub-type. */ |
| static const char *rsa_query_operation_name(int operation_id) |
| { |
| return "RSA"; |
| } |
| |
| const OSSL_DISPATCH ossl_rsa_keymgmt_functions[] = { |
| { OSSL_FUNC_KEYMGMT_NEW, (void (*)(void))rsa_newdata }, |
| { OSSL_FUNC_KEYMGMT_GEN_INIT, (void (*)(void))rsa_gen_init }, |
| { OSSL_FUNC_KEYMGMT_GEN_SET_PARAMS, |
| (void (*)(void))rsa_gen_set_params }, |
| { OSSL_FUNC_KEYMGMT_GEN_SETTABLE_PARAMS, |
| (void (*)(void))rsa_gen_settable_params }, |
| { OSSL_FUNC_KEYMGMT_GEN, (void (*)(void))rsa_gen }, |
| { OSSL_FUNC_KEYMGMT_GEN_CLEANUP, (void (*)(void))rsa_gen_cleanup }, |
| { OSSL_FUNC_KEYMGMT_LOAD, (void (*)(void))rsa_load }, |
| { OSSL_FUNC_KEYMGMT_FREE, (void (*)(void))rsa_freedata }, |
| { OSSL_FUNC_KEYMGMT_GET_PARAMS, (void (*) (void))rsa_get_params }, |
| { OSSL_FUNC_KEYMGMT_GETTABLE_PARAMS, (void (*) (void))rsa_gettable_params }, |
| { OSSL_FUNC_KEYMGMT_HAS, (void (*)(void))rsa_has }, |
| { OSSL_FUNC_KEYMGMT_MATCH, (void (*)(void))rsa_match }, |
| { OSSL_FUNC_KEYMGMT_VALIDATE, (void (*)(void))rsa_validate }, |
| { OSSL_FUNC_KEYMGMT_IMPORT, (void (*)(void))rsa_import }, |
| { OSSL_FUNC_KEYMGMT_IMPORT_TYPES, (void (*)(void))rsa_import_types }, |
| { OSSL_FUNC_KEYMGMT_EXPORT, (void (*)(void))rsa_export }, |
| { OSSL_FUNC_KEYMGMT_EXPORT_TYPES, (void (*)(void))rsa_export_types }, |
| { 0, NULL } |
| }; |
| |
| const OSSL_DISPATCH ossl_rsapss_keymgmt_functions[] = { |
| { OSSL_FUNC_KEYMGMT_NEW, (void (*)(void))rsapss_newdata }, |
| { OSSL_FUNC_KEYMGMT_GEN_INIT, (void (*)(void))rsapss_gen_init }, |
| { OSSL_FUNC_KEYMGMT_GEN_SET_PARAMS, (void (*)(void))rsa_gen_set_params }, |
| { OSSL_FUNC_KEYMGMT_GEN_SETTABLE_PARAMS, |
| (void (*)(void))rsapss_gen_settable_params }, |
| { OSSL_FUNC_KEYMGMT_GEN, (void (*)(void))rsa_gen }, |
| { OSSL_FUNC_KEYMGMT_GEN_CLEANUP, (void (*)(void))rsa_gen_cleanup }, |
| { OSSL_FUNC_KEYMGMT_LOAD, (void (*)(void))rsapss_load }, |
| { OSSL_FUNC_KEYMGMT_FREE, (void (*)(void))rsa_freedata }, |
| { OSSL_FUNC_KEYMGMT_GET_PARAMS, (void (*) (void))rsa_get_params }, |
| { OSSL_FUNC_KEYMGMT_GETTABLE_PARAMS, (void (*) (void))rsa_gettable_params }, |
| { OSSL_FUNC_KEYMGMT_HAS, (void (*)(void))rsa_has }, |
| { OSSL_FUNC_KEYMGMT_MATCH, (void (*)(void))rsa_match }, |
| { OSSL_FUNC_KEYMGMT_VALIDATE, (void (*)(void))rsa_validate }, |
| { OSSL_FUNC_KEYMGMT_IMPORT, (void (*)(void))rsa_import }, |
| { OSSL_FUNC_KEYMGMT_IMPORT_TYPES, (void (*)(void))rsa_import_types }, |
| { OSSL_FUNC_KEYMGMT_EXPORT, (void (*)(void))rsa_export }, |
| { OSSL_FUNC_KEYMGMT_EXPORT_TYPES, (void (*)(void))rsa_export_types }, |
| { OSSL_FUNC_KEYMGMT_QUERY_OPERATION_NAME, |
| (void (*)(void))rsa_query_operation_name }, |
| { 0, NULL } |
| }; |
