/*
- * Copyright 2019 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 2019-2020 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
* 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 <openssl/err.h>
#include <openssl/rsa.h>
-#include <openssl/params.h>
-#include <openssl/types.h>
-#include "internal/param_build.h"
+#include <openssl/evp.h>
#include "prov/implementations.h"
#include "prov/providercommon.h"
+#include "prov/provider_ctx.h"
#include "crypto/rsa.h"
-
-static OSSL_OP_keymgmt_importkey_fn rsa_importkey;
-static OSSL_OP_keymgmt_exportkey_fn rsa_exportkey;
+#include "internal/param_build_set.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;
+
+#define RSA_DEFAULT_MD "SHA256"
+#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 collect_numbers(STACK_OF(BIGNUM) *numbers,
- const OSSL_PARAM params[], const char *key)
-{
- const OSSL_PARAM *p = NULL;
-
- if (numbers == NULL)
- return 0;
-
- for (p = params; (p = OSSL_PARAM_locate_const(p, key)) != NULL; p++) {
- BIGNUM *tmp = NULL;
-
- if (!OSSL_PARAM_get_BN(p, &tmp))
- return 0;
- sk_BIGNUM_push(numbers, tmp);
- }
-
- return 1;
-}
-
-static int params_to_key(RSA *rsa, const OSSL_PARAM params[])
-{
- const OSSL_PARAM *param_n, *param_e, *param_d;
- BIGNUM *n = NULL, *e = NULL, *d = NULL;
- STACK_OF(BIGNUM) *factors = NULL, *exps = NULL, *coeffs = NULL;
- int is_private = 0;
-
- if (rsa == NULL)
- return 0;
-
- param_n = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_RSA_N);
- param_e = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_RSA_E);
- param_d = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_RSA_D);
-
- if ((param_n != NULL && !OSSL_PARAM_get_BN(param_n, &n))
- || (param_e != NULL && !OSSL_PARAM_get_BN(param_e, &e))
- || (param_d != NULL && !OSSL_PARAM_get_BN(param_d, &d)))
- goto err;
-
- is_private = (d != NULL);
-
- if (!RSA_set0_key(rsa, n, e, d))
- goto err;
- n = e = d = NULL;
-
- if (is_private) {
- if (!collect_numbers(factors = sk_BIGNUM_new_null(), params,
- OSSL_PKEY_PARAM_RSA_FACTOR)
- || !collect_numbers(exps = sk_BIGNUM_new_null(), params,
- OSSL_PKEY_PARAM_RSA_EXPONENT)
- || !collect_numbers(coeffs = sk_BIGNUM_new_null(), params,
- OSSL_PKEY_PARAM_RSA_COEFFICIENT))
- goto err;
-
- /* It's ok if this private key just has n, e and d */
- if (sk_BIGNUM_num(factors) != 0
- && !rsa_set0_all_params(rsa, factors, exps, coeffs))
- goto err;
- }
-
- sk_BIGNUM_free(factors);
- sk_BIGNUM_free(exps);
- sk_BIGNUM_free(coeffs);
- return 1;
-
- err:
- BN_free(n);
- BN_free(e);
- BN_free(d);
- sk_BIGNUM_pop_free(factors, BN_free);
- sk_BIGNUM_pop_free(exps, BN_free);
- sk_BIGNUM_pop_free(coeffs, BN_free);
- return 0;
-}
-
-static int export_numbers(OSSL_PARAM_BLD *tmpl, const char *key,
- STACK_OF(BIGNUM_const) *numbers)
-{
- int i, nnum;
-
- if (numbers == NULL)
- return 0;
-
- nnum = sk_BIGNUM_const_num(numbers);
-
- for (i = 0; i < nnum; i++) {
- if (!ossl_param_bld_push_BN(tmpl, key,
- sk_BIGNUM_const_value(numbers, i)))
- return 0;
- }
-
- return 1;
-}
-
-static int key_to_params(RSA *rsa, OSSL_PARAM_BLD *tmpl)
+static int key_to_params(RSA *rsa, OSSL_PARAM_BLD *bld, OSSL_PARAM params[])
{
int ret = 0;
const BIGNUM *rsa_d = NULL, *rsa_n = NULL, *rsa_e = NULL;
RSA_get0_key(rsa, &rsa_n, &rsa_e, &rsa_d);
rsa_get0_all_params(rsa, factors, exps, coeffs);
- if (rsa_n != NULL
- && !ossl_param_bld_push_BN(tmpl, OSSL_PKEY_PARAM_RSA_N, rsa_n))
- goto err;
- if (rsa_e != NULL
- && !ossl_param_bld_push_BN(tmpl, OSSL_PKEY_PARAM_RSA_E, rsa_e))
- goto err;
- if (rsa_d != NULL
- && !ossl_param_bld_push_BN(tmpl, OSSL_PKEY_PARAM_RSA_D, rsa_d))
- goto err;
-
- if (!export_numbers(tmpl, OSSL_PKEY_PARAM_RSA_FACTOR, factors)
- || !export_numbers(tmpl, OSSL_PKEY_PARAM_RSA_EXPONENT, exps)
- || !export_numbers(tmpl, OSSL_PKEY_PARAM_RSA_COEFFICIENT, coeffs))
+ if (!ossl_param_build_set_bn(bld, params, OSSL_PKEY_PARAM_RSA_N, rsa_n)
+ || !ossl_param_build_set_bn(bld, params, OSSL_PKEY_PARAM_RSA_E, rsa_e)
+ || !ossl_param_build_set_bn(bld, params, OSSL_PKEY_PARAM_RSA_D, rsa_d)
+ || !ossl_param_build_set_multi_key_bn(bld, params, rsa_mp_factor_names,
+ factors)
+ || !ossl_param_build_set_multi_key_bn(bld, params, rsa_mp_exp_names,
+ exps)
+ || !ossl_param_build_set_multi_key_bn(bld, params, rsa_mp_coeff_names,
+ coeffs))
goto err;
-
ret = 1;
err:
sk_BIGNUM_const_free(factors);
return ret;
}
-static void *rsa_importkey(void *provctx, const OSSL_PARAM params[])
+static void *rsa_newdata(void *provctx)
{
- RSA *rsa;
+ OPENSSL_CTX *libctx = PROV_LIBRARY_CONTEXT_OF(provctx);
- if ((rsa = RSA_new()) == NULL
- || !params_to_key(rsa, params)) {
- RSA_free(rsa);
- rsa = NULL;
+ return rsa_new_with_ctx(libctx);
+}
+
+static void rsa_freedata(void *keydata)
+{
+ RSA_free(keydata);
+}
+
+static int rsa_has(void *keydata, int selection)
+{
+ RSA *rsa = keydata;
+ int ok = 0;
+
+ if (rsa != NULL) {
+ if ((selection & RSA_POSSIBLE_SELECTIONS) != 0)
+ ok = 1;
+
+ if ((selection & OSSL_KEYMGMT_SELECT_OTHER_PARAMETERS) != 0)
+ ok = ok && 0; /* This will change with PSS and OAEP */
+ 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 rsa;
+ return ok;
}
-static int rsa_exportkey(void *key, OSSL_CALLBACK *param_callback, void *cbarg)
+static int rsa_match(const void *keydata1, const void *keydata2, int selection)
{
- RSA *rsa = key;
- OSSL_PARAM_BLD tmpl;
+ 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;
+ int ok = 1;
+
+ if (rsa == NULL)
+ return 0;
+
+ /* TODO(3.0) PSS and OAEP should bring on parameters */
+
+ if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0)
+ ok = ok && rsa_fromdata(rsa, params);
+
+ return ok;
+}
+
+static int rsa_export(void *keydata, int selection,
+ OSSL_CALLBACK *param_callback, void *cbarg)
+{
+ RSA *rsa = keydata;
+ OSSL_PARAM_BLD *tmpl;
OSSL_PARAM *params = NULL;
- int ret;
+ int ok = 1;
- ossl_param_bld_init(&tmpl);
- if (rsa == NULL
- || !key_to_params(rsa, &tmpl)
- || (params = ossl_param_bld_to_param(&tmpl)) == NULL)
+ if (rsa == NULL)
return 0;
- ret = param_callback(params, cbarg);
- ossl_param_bld_free(params);
- return ret;
+
+ /* TODO(3.0) PSS and OAEP should bring on parameters */
+
+ tmpl = OSSL_PARAM_BLD_new();
+ if (tmpl == NULL)
+ return 0;
+
+ if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0)
+ ok = ok && key_to_params(rsa, tmpl, NULL);
+
+ if (!ok
+ || (params = OSSL_PARAM_BLD_to_param(tmpl)) == NULL)
+ goto err;
+
+ ok = param_callback(params, cbarg);
+ OSSL_PARAM_BLD_free_params(params);
+err:
+ OSSL_PARAM_BLD_free(tmpl);
+ return ok;
}
+#ifdef FIPS_MODE
+/* 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
* different arrays.
*/
static const OSSL_PARAM 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),
- /* We tolerate up to 10 factors... */
- OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR, NULL, 0),
- OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR, NULL, 0),
- OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR, NULL, 0),
- OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR, NULL, 0),
- OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR, NULL, 0),
- OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR, NULL, 0),
- OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR, NULL, 0),
- OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR, NULL, 0),
- OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR, NULL, 0),
- OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR, NULL, 0),
- /* ..., up to 10 CRT exponents... */
- OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT, NULL, 0),
- OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT, NULL, 0),
- OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT, NULL, 0),
- OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT, NULL, 0),
- OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT, NULL, 0),
- OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT, NULL, 0),
- OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT, NULL, 0),
- OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT, NULL, 0),
- OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT, NULL, 0),
- OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT, NULL, 0),
- /* ..., and up to 9 CRT coefficients */
- OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_COEFFICIENT, NULL, 0),
- OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_COEFFICIENT, NULL, 0),
- OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_COEFFICIENT, NULL, 0),
- OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_COEFFICIENT, NULL, 0),
- OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_COEFFICIENT, NULL, 0),
- OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_COEFFICIENT, NULL, 0),
- OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_COEFFICIENT, NULL, 0),
- OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_COEFFICIENT, NULL, 0),
- OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_COEFFICIENT, NULL, 0),
+ RSA_KEY_TYPES()
+ OSSL_PARAM_END
};
/*
* We lied about the amount of factors, exponents and coefficients, the
* so we at least pretend to have some limits.
*/
-static const OSSL_PARAM *rsa_exportkey_types(void)
+static const OSSL_PARAM *rsa_imexport_types(int selection)
{
- return rsa_key_types;
+ if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0)
+ return rsa_key_types;
+ return NULL;
}
-static const OSSL_PARAM *rsa_importkey_types(void)
+static const OSSL_PARAM *rsa_import_types(int selection)
{
- return rsa_key_types;
+ 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;
+ 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;
+
+# 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) {
+ const EVP_MD *md, *mgf1md;
+ int min_saltlen;
+
+ if (!rsa_pss_get_param(RSA_get0_pss_params(rsa),
+ &md, &mgf1md, &min_saltlen)) {
+ ERR_raise(ERR_LIB_PROV, ERR_R_INTERNAL_ERROR);
+ return 0;
+ }
+ if (!OSSL_PARAM_set_utf8_string(p, EVP_MD_name(md)))
+ return 0;
+ }
+#endif
+ if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_DEFAULT_DIGEST)) != 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 key_to_params(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)
+{
+ return rsa_params;
+}
+
+static int rsa_validate(void *keydata, int selection)
+{
+ RSA *rsa = keydata;
+ int ok = 0;
+
+ if ((selection & RSA_POSSIBLE_SELECTIONS) != 0)
+ ok = 1;
+
+ /* If the whole key is selected, we do a pairwise validation */
+ if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR)
+ == OSSL_KEYMGMT_SELECT_KEYPAIR) {
+ ok = ok && rsa_validate_pairwise(rsa);
+ } else {
+ if ((selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0)
+ ok = ok && rsa_validate_private(rsa);
+ if ((selection & OSSL_KEYMGMT_SELECT_PUBLIC_KEY) != 0)
+ ok = ok && rsa_validate_public(rsa);
+ }
+ 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_IMPORTKEY, (void (*)(void))rsa_importkey },
- { OSSL_FUNC_KEYMGMT_IMPORTKEY_TYPES, (void (*)(void))rsa_importkey_types },
- { OSSL_FUNC_KEYMGMT_EXPORTKEY, (void (*)(void))rsa_exportkey },
- { OSSL_FUNC_KEYMGMT_EXPORTKEY_TYPES, (void (*)(void))rsa_exportkey_types },
- { OSSL_FUNC_KEYMGMT_FREEKEY, (void (*)(void))RSA_free },
+ { 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 },
{ 0, NULL }
};
projects / openssl.git / blobdiff