* 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_numbers.h>
#include <openssl/core_names.h>
#include <openssl/bn.h>
#include "internal/param_build.h"
#include "prov/implementations.h"
#include "prov/providercommon.h"
+#include "prov/provider_ctx.h"
#include "crypto/rsa.h"
static OSSL_OP_keymgmt_new_fn rsa_newdata;
+static OSSL_OP_keymgmt_gen_init_fn rsa_gen_init;
+static OSSL_OP_keymgmt_gen_set_params_fn rsa_gen_set_params;
+static OSSL_OP_keymgmt_gen_settable_params_fn rsa_gen_settable_params;
+static OSSL_OP_keymgmt_gen_fn rsa_gen;
+static OSSL_OP_keymgmt_gen_cleanup_fn rsa_gen_cleanup;
static OSSL_OP_keymgmt_free_fn rsa_freedata;
+static OSSL_OP_keymgmt_get_params_fn rsa_get_params;
+static OSSL_OP_keymgmt_gettable_params_fn rsa_gettable_params;
static OSSL_OP_keymgmt_has_fn rsa_has;
+static OSSL_OP_keymgmt_match_fn rsa_match;
+static OSSL_OP_keymgmt_validate_fn rsa_validate;
static OSSL_OP_keymgmt_import_fn rsa_import;
static OSSL_OP_keymgmt_import_types_fn rsa_import_types;
static OSSL_OP_keymgmt_export_fn rsa_export;
static OSSL_OP_keymgmt_export_types_fn rsa_export_types;
-static OSSL_OP_keymgmt_get_params_fn rsa_get_params;
-static OSSL_OP_keymgmt_validate_fn rsa_validate;
#define RSA_DEFAULT_MD "SHA256"
#define RSA_POSSIBLE_SELECTIONS \
static void *rsa_newdata(void *provctx)
{
- return RSA_new();
+ OPENSSL_CTX *libctx = PROV_LIBRARY_CONTEXT_OF(provctx);
+
+ return rsa_new_with_ctx(libctx);
}
static void rsa_freedata(void *keydata)
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;
+
+ /* 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;
* so we at least pretend to have some limits.
*/
-static const OSSL_PARAM *rsa_export_types(int selection)
+static const OSSL_PARAM *rsa_imexport_types(int selection)
{
- if ((selection & OSSL_KEYMGMT_SELECT_KEY) != 0)
+ if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0)
return rsa_key_types;
return NULL;
}
static const OSSL_PARAM *rsa_import_types(int selection)
{
- if ((selection & OSSL_KEYMGMT_SELECT_KEY) != 0)
- return rsa_key_types;
- return NULL;
+ 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[])
&& !OSSL_PARAM_set_int(p, RSA_size(rsa)))
return 0;
-# if 0 /* PSS support pending */
+# if 0 /* TODO(3.0): PSS support pending */
if ((p = OSSL_PARAM_locate(params,
OSSL_PKEY_PARAM_MANDATORY_DIGEST)) != NULL
&& RSA_get0_pss_params(rsa) != NULL) {
}
#endif
if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_DEFAULT_DIGEST)) != NULL
- && RSA_get0_pss_params(rsa) == NULL)
+/* TODO(3.0): PSS support pending */
+#if 0
+ && RSA_get0_pss_params(rsa) == NULL
+#endif
+ ) {
if (!OSSL_PARAM_set_utf8_string(p, RSA_DEFAULT_MD))
return 0;
+ }
return 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),
+ OSSL_PARAM_END
+};
+
+static const OSSL_PARAM *rsa_gettable_params(void)
+{
+ return rsa_params;
+}
+
static int rsa_validate(void *keydata, int selection)
{
RSA *rsa = keydata;
return ok;
}
+struct rsa_gen_ctx {
+ OPENSSL_CTX *libctx;
+
+ size_t nbits;
+ BIGNUM *pub_exp;
+ size_t primes;
+
+ /* For generation callback */
+ OSSL_CALLBACK *cb;
+ void *cbarg;
+};
+
+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 *rsa_gen_init(void *provctx, int selection)
+{
+ OPENSSL_CTX *libctx = PROV_LIBRARY_CONTEXT_OF(provctx);
+ struct rsa_gen_ctx *gctx = 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);
+ gctx = NULL;
+ } else {
+ gctx->nbits = 2048;
+ gctx->primes = RSA_DEFAULT_PRIME_NUM;
+ }
+ }
+ return gctx;
+}
+
+static int rsa_gen_set_params(void *genctx, const OSSL_PARAM params[])
+{
+ struct rsa_gen_ctx *gctx = genctx;
+ const OSSL_PARAM *p;
+
+ if ((p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_RSA_BITS)) != NULL
+ && !OSSL_PARAM_get_size_t(p, &gctx->nbits))
+ 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;
+ return 1;
+}
+
+static const OSSL_PARAM *rsa_gen_settable_params(void *provctx)
+{
+ static OSSL_PARAM settable[] = {
+ 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),
+ 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;
+ BN_GENCB *gencb = NULL;
+
+ if (gctx == NULL
+ || (rsa = 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 (!RSA_generate_multi_prime_key(rsa, (int)gctx->nbits, (int)gctx->primes,
+ gctx->pub_exp, gencb)) {
+ RSA_free(rsa);
+ rsa = NULL;
+ }
+
+ BN_GENCB_free(gencb);
+
+ return rsa;
+}
+
+static void rsa_gen_cleanup(void *genctx)
+{
+ struct rsa_gen_ctx *gctx = genctx;
+
+ if (gctx == NULL)
+ return;
+
+ BN_clear_free(gctx->pub_exp);
+ OPENSSL_free(gctx);
+}
+
const OSSL_DISPATCH 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_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_GET_PARAMS, (void (*) (void))rsa_get_params },
- { OSSL_FUNC_KEYMGMT_VALIDATE, (void (*)(void))rsa_validate },
{ 0, NULL }
};
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