/*
* 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 <string.h>
#include <openssl/bio.h>
#include <openssl/bn.h>
#include <openssl/rsa.h>
#include <openssl/evp.h>
#include <openssl/provider.h>
#include <openssl/core_names.h>
#include "internal/core.h"
#include "internal/nelem.h"
#include "crypto/evp.h" /* For the internal API */
#include "testutil.h"
typedef struct {
OSSL_LIB_CTX *ctx1;
OSSL_PROVIDER *prov1;
OSSL_LIB_CTX *ctx2;
OSSL_PROVIDER *prov2;
} FIXTURE;
static void tear_down(FIXTURE *fixture)
{
if (fixture != NULL) {
OSSL_PROVIDER_unload(fixture->prov1);
OSSL_PROVIDER_unload(fixture->prov2);
OSSL_LIB_CTX_free(fixture->ctx1);
OSSL_LIB_CTX_free(fixture->ctx2);
OPENSSL_free(fixture);
}
}
static FIXTURE *set_up(const char *testcase_name)
{
FIXTURE *fixture;
if (!TEST_ptr(fixture = OPENSSL_zalloc(sizeof(*fixture)))
|| !TEST_ptr(fixture->ctx1 = OSSL_LIB_CTX_new())
|| !TEST_ptr(fixture->prov1 = OSSL_PROVIDER_load(fixture->ctx1,
"default"))
|| !TEST_ptr(fixture->ctx2 = OSSL_LIB_CTX_new())
|| !TEST_ptr(fixture->prov2 = OSSL_PROVIDER_load(fixture->ctx2,
"default"))) {
tear_down(fixture);
return NULL;
}
return fixture;
}
/* Array indexes */
#define N 0
#define E 1
#define D 2
#define P 3
#define Q 4
#define F3 5 /* Extra factor */
#define DP 6
#define DQ 7
#define E3 8 /* Extra exponent */
#define QINV 9
#define C2 10 /* Extra coefficient */
/*
* We have to do this because OSSL_PARAM_get_ulong() can't handle params
* holding data that isn't exactly sizeof(uint32_t) or sizeof(uint64_t),
* and because the other end deals with BIGNUM, the resulting param might
* be any size. In this particular test, we know that the expected data
* fits within an unsigned long, and we want to get the data in that form
* to make testing of values easier.
*/
static int get_ulong_via_BN(const OSSL_PARAM *p, unsigned long *goal)
{
BIGNUM *n = NULL;
int ret = 1; /* Ever so hopeful */
if (!TEST_true(OSSL_PARAM_get_BN(p, &n))
|| !TEST_int_ge(BN_bn2nativepad(n, (unsigned char *)goal, sizeof(*goal)), 0))
ret = 0;
BN_free(n);
return ret;
}
static int export_cb(const OSSL_PARAM *params, void *arg)
{
unsigned long *keydata = arg;
const OSSL_PARAM *p = NULL;
if (keydata == NULL)
return 0;
if (!TEST_ptr(p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_RSA_N))
|| !TEST_true(get_ulong_via_BN(p, &keydata[N]))
|| !TEST_ptr(p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_RSA_E))
|| !TEST_true(get_ulong_via_BN(p, &keydata[E]))
|| !TEST_ptr(p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_RSA_D))
|| !TEST_true(get_ulong_via_BN(p, &keydata[D])))
return 0;
if (!TEST_ptr(p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_RSA_FACTOR1))
|| !TEST_true(get_ulong_via_BN(p, &keydata[P]))
|| !TEST_ptr(p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_RSA_FACTOR2))
|| !TEST_true(get_ulong_via_BN(p, &keydata[Q]))
|| !TEST_ptr(p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_RSA_FACTOR3))
|| !TEST_true(get_ulong_via_BN(p, &keydata[F3])))
return 0;
if (!TEST_ptr(p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_RSA_EXPONENT1))
|| !TEST_true(get_ulong_via_BN(p, &keydata[DP]))
|| !TEST_ptr(p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_RSA_EXPONENT2))
|| !TEST_true(get_ulong_via_BN(p, &keydata[DQ]))
|| !TEST_ptr(p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_RSA_EXPONENT3))
|| !TEST_true(get_ulong_via_BN(p, &keydata[E3])))
return 0;
if (!TEST_ptr(p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_RSA_COEFFICIENT1))
|| !TEST_true(get_ulong_via_BN(p, &keydata[QINV]))
|| !TEST_ptr(p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_RSA_COEFFICIENT2))
|| !TEST_true(get_ulong_via_BN(p, &keydata[C2])))
return 0;
return 1;
}
static int test_pass_rsa(FIXTURE *fixture)
{
size_t i;
int ret = 0;
RSA *rsa = NULL;
BIGNUM *bn1 = NULL, *bn2 = NULL, *bn3 = NULL;
EVP_PKEY *pk = NULL, *dup_pk = NULL;
EVP_KEYMGMT *km = NULL, *km1 = NULL, *km2 = NULL, *km3 = NULL;
void *provkey = NULL, *provkey2 = NULL;
BIGNUM *bn_primes[1] = { NULL };
BIGNUM *bn_exps[1] = { NULL };
BIGNUM *bn_coeffs[1] = { NULL };
/*
* 32-bit RSA key, extracted from this command,
* executed with OpenSSL 1.0.2:
* An extra factor was added just for testing purposes.
*
* openssl genrsa 32 | openssl rsa -text
*/
static BN_ULONG expected[] = {
0xbc747fc5, /* N */
0x10001, /* E */
0x7b133399, /* D */
0xe963, /* P */
0xceb7, /* Q */
1, /* F3 */
0x8599, /* DP */
0xbd87, /* DQ */
2, /* E3 */
0xcc3b, /* QINV */
3, /* C3 */
0 /* Extra, should remain zero */
};
static unsigned long keydata[OSSL_NELEM(expected)] = { 0, };
if (!TEST_ptr(rsa = RSA_new()))
goto err;
if (!TEST_ptr(bn1 = BN_new())
|| !TEST_true(BN_set_word(bn1, expected[N]))
|| !TEST_ptr(bn2 = BN_new())
|| !TEST_true(BN_set_word(bn2, expected[E]))
|| !TEST_ptr(bn3 = BN_new())
|| !TEST_true(BN_set_word(bn3, expected[D]))
|| !TEST_true(RSA_set0_key(rsa, bn1, bn2, bn3)))
goto err;
if (!TEST_ptr(bn1 = BN_new())
|| !TEST_true(BN_set_word(bn1, expected[P]))
|| !TEST_ptr(bn2 = BN_new())
|| !TEST_true(BN_set_word(bn2, expected[Q]))
|| !TEST_true(RSA_set0_factors(rsa, bn1, bn2)))
goto err;
if (!TEST_ptr(bn1 = BN_new())
|| !TEST_true(BN_set_word(bn1, expected[DP]))
|| !TEST_ptr(bn2 = BN_new())
|| !TEST_true(BN_set_word(bn2, expected[DQ]))
|| !TEST_ptr(bn3 = BN_new())
|| !TEST_true(BN_set_word(bn3, expected[QINV]))
|| !TEST_true(RSA_set0_crt_params(rsa, bn1, bn2, bn3)))
goto err;
bn1 = bn2 = bn3 = NULL;
if (!TEST_ptr(bn_primes[0] = BN_new())
|| !TEST_true(BN_set_word(bn_primes[0], expected[F3]))
|| !TEST_ptr(bn_exps[0] = BN_new())
|| !TEST_true(BN_set_word(bn_exps[0], expected[E3]))
|| !TEST_ptr(bn_coeffs[0] = BN_new())
|| !TEST_true(BN_set_word(bn_coeffs[0], expected[C2]))
|| !TEST_true(RSA_set0_multi_prime_params(rsa, bn_primes, bn_exps,
bn_coeffs, 1)))
goto err;
if (!TEST_ptr(pk = EVP_PKEY_new())
|| !TEST_true(EVP_PKEY_assign_RSA(pk, rsa)))
goto err;
rsa = NULL;
if (!TEST_ptr(km1 = EVP_KEYMGMT_fetch(fixture->ctx1, "RSA", NULL))
|| !TEST_ptr(km2 = EVP_KEYMGMT_fetch(fixture->ctx2, "RSA", NULL))
|| !TEST_ptr(km3 = EVP_KEYMGMT_fetch(fixture->ctx1, "RSA-PSS", NULL))
|| !TEST_ptr_ne(km1, km2))
goto err;
while (dup_pk == NULL) {
ret = 0;
km = km3;
/* Check that we can't export an RSA key into a RSA-PSS keymanager */
if (!TEST_ptr_null(provkey2 = evp_pkey_export_to_provider(pk, NULL,
&km,
NULL)))
goto err;
if (!TEST_ptr(provkey = evp_pkey_export_to_provider(pk, NULL, &km1,
NULL))
|| !TEST_true(evp_keymgmt_export(km2, provkey,
OSSL_KEYMGMT_SELECT_KEYPAIR,
&export_cb, keydata)))
goto err;
/*
* At this point, the hope is that keydata will have all the numbers
* from the key.
*/
for (i = 0; i < OSSL_NELEM(expected); i++) {
int rv = TEST_int_eq(expected[i], keydata[i]);
if (!rv)
TEST_info("i = %zu", i);
else
ret++;
}
ret = (ret == OSSL_NELEM(expected));
if (!ret || !TEST_ptr(dup_pk = EVP_PKEY_dup(pk)))
goto err;
ret = TEST_int_eq(EVP_PKEY_eq(pk, dup_pk), 1);
EVP_PKEY_free(pk);
pk = dup_pk;
if (!ret)
goto err;
}
err:
RSA_free(rsa);
BN_free(bn1);
BN_free(bn2);
BN_free(bn3);
EVP_PKEY_free(pk);
EVP_KEYMGMT_free(km1);
EVP_KEYMGMT_free(km2);
EVP_KEYMGMT_free(km3);
return ret;
}
static int (*tests[])(FIXTURE *) = {
test_pass_rsa
};
static int test_pass_key(int n)
{
SETUP_TEST_FIXTURE(FIXTURE, set_up);
EXECUTE_TEST(tests[n], tear_down);
return result;
}
int setup_tests(void)
{
ADD_ALL_TESTS(test_pass_key, 1);
return 1;
}