rsa_kmgmt.c
/*
* Copyright 2019-2023 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;
static OSSL_FUNC_keymgmt_dup_fn rsa_dup;
#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 */
/* OSSL_KEYMGMT_SELECT_OTHER_PARAMETERS are always available even if empty */
if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0)
ok = ok && (RSA_get0_n(rsa) != NULL);
if ((selection & OSSL_KEYMGMT_SELECT_PUBLIC_KEY) != 0)
ok = ok && (RSA_get0_e(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_KEYPAIR) != 0) {
int key_checked = 0;
if ((selection & OSSL_KEYMGMT_SELECT_PUBLIC_KEY) != 0) {
const BIGNUM *pa = RSA_get0_n(rsa1);
const BIGNUM *pb = RSA_get0_n(rsa2);
if (pa != NULL && pb != NULL) {
ok = ok && BN_cmp(pa, pb) == 0;
key_checked = 1;
}
}
if (!key_checked
&& (selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0) {
const BIGNUM *pa = RSA_get0_d(rsa1);
const BIGNUM *pb = RSA_get0_d(rsa2);
if (pa != NULL && pb != NULL) {
ok = ok && BN_cmp(pa, pb) == 0;
key_checked = 1;
}
}
ok = ok && key_checked;
}
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) {
int include_private =
selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY ? 1 : 0;
ok = ok && ossl_rsa_fromdata(rsa, params, include_private);
}
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) {
int include_private =
selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY ? 1 : 0;
ok = ok && ossl_rsa_todata(rsa, tmpl, NULL, include_private);
}
if (!ok || (params = OSSL_PARAM_BLD_to_param(tmpl)) == NULL) {
ok = 0;
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;
int empty = RSA_get0_n(rsa) == NULL;
if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_BITS)) != NULL
&& (empty || !OSSL_PARAM_set_int(p, RSA_bits(rsa))))
return 0;
if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_SECURITY_BITS)) != NULL
&& (empty || !OSSL_PARAM_set_int(p, RSA_security_bits(rsa))))
return 0;
if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_MAX_SIZE)) != NULL
&& (empty || !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, 1);
}
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)) {
goto err;
}
gctx->nbits = 2048;
gctx->primes = RSA_DEFAULT_PRIME_NUM;
gctx->rsa_type = rsa_type;
} else {
goto err;
}
if (!rsa_gen_set_params(gctx, params))
goto err;
return gctx;
err:
if (gctx != NULL)
BN_free(gctx->pub_exp);
OPENSSL_free(gctx);
return NULL;
}
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);
}
static void *rsa_dup(const void *keydata_from, int selection)
{
if (ossl_prov_is_running()
/* do not allow creating empty keys by duplication */
&& (selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0)
return ossl_rsa_dup(keydata_from, selection);
return NULL;
}
/* 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 },
{ OSSL_FUNC_KEYMGMT_DUP, (void (*)(void))rsa_dup },
OSSL_DISPATCH_END
};
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 },
{ OSSL_FUNC_KEYMGMT_DUP, (void (*)(void))rsa_dup },
OSSL_DISPATCH_END
};
