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openssl/test/algorithmid_test.c

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/*
* Copyright 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
*/
#include <openssl/asn1.h>
#include <openssl/pem.h>
#include "internal/sizes.h"
#include "crypto/evp.h"
#include "testutil.h"
/* Collected arguments */
static const char *eecert_filename = NULL; /* For test_x509_file() */
static const char *cacert_filename = NULL; /* For test_x509_file() */
static const char *pubkey_filename = NULL; /* For test_spki_file() */
#define ALGORITHMID_NAME "algorithm-id"
static int test_spki_aid(X509_PUBKEY *pubkey, const char *filename)
{
const ASN1_OBJECT *oid;
X509_ALGOR *alg = NULL;
EVP_PKEY *pkey = NULL;
EVP_KEYMGMT *keymgmt = NULL;
void *keydata = NULL;
char name[OSSL_MAX_NAME_SIZE] = "";
unsigned char *algid_legacy = NULL;
int algid_legacy_len = 0;
static unsigned char algid_prov[OSSL_MAX_ALGORITHM_ID_SIZE];
size_t algid_prov_len = 0;
const OSSL_PARAM *gettable_params = NULL;
OSSL_PARAM params[] = {
OSSL_PARAM_octet_string(ALGORITHMID_NAME,
&algid_prov, sizeof(algid_prov)),
OSSL_PARAM_END
};
int ret = 0;
if (!TEST_true(X509_PUBKEY_get0_param(NULL, NULL, NULL, &alg, pubkey))
|| !TEST_ptr(pkey = X509_PUBKEY_get0(pubkey)))
goto end;
if (!TEST_int_ge(algid_legacy_len = i2d_X509_ALGOR(alg, &algid_legacy), 0))
goto end;
X509_ALGOR_get0(&oid, NULL, NULL, alg);
if (!TEST_true(OBJ_obj2txt(name, sizeof(name), oid, 0)))
goto end;
/*
* We use an internal functions to ensure we have a provided key.
* Note that |keydata| should not be freed, as it's cached in |pkey|.
* The |keymgmt|, however, should, as its reference count is incremented
* in this function.
*/
if ((keydata = evp_pkey_export_to_provider(pkey, NULL,
&keymgmt, NULL)) == NULL) {
TEST_info("The public key found in '%s' doesn't have provider support."
" Skipping...",
filename);
ret = 1;
goto end;
}
if (!TEST_true(EVP_KEYMGMT_is_a(keymgmt, name))) {
TEST_info("The AlgorithmID key type (%s) for the public key found in"
" '%s' doesn't match the key type of the extracted public"
" key.",
name, filename);
ret = 1;
goto end;
}
if (!TEST_ptr(gettable_params = EVP_KEYMGMT_gettable_params(keymgmt))
|| !TEST_ptr(OSSL_PARAM_locate_const(gettable_params, ALGORITHMID_NAME))) {
TEST_info("The %s provider keymgmt appears to lack support for algorithm-id."
" Skipping...",
name);
ret = 1;
goto end;
}
algid_prov[0] = '\0';
if (!TEST_true(evp_keymgmt_get_params(keymgmt, keydata, params)))
goto end;
algid_prov_len = params[0].return_size;
/* We now have all the algorithm IDs we need, let's compare them */
if (TEST_mem_eq(algid_legacy, algid_legacy_len,
algid_prov, algid_prov_len))
ret = 1;
end:
EVP_KEYMGMT_free(keymgmt);
OPENSSL_free(algid_legacy);
return ret;
}
static int test_x509_spki_aid(X509 *cert, const char *filename)
{
X509_PUBKEY *pubkey = X509_get_X509_PUBKEY(cert);
return test_spki_aid(pubkey, filename);
}
/*
* TODO
* When we gain the ability to get an EVP_SIGNATURE with a complete signature
* algorithm name (like "sha1WithRSAEncryption" or its corresponding OID in
* text form, "1.2.840.113549.1.1.2"), we won't have to limit this test to
* what we have in libcrypto's cross-reference db, i.e. won't have to call
* OBJ_find_sigid_algs() to find out the EVP_PKEY_METHOD NID any more.
* All we'd have to do is used OBJ_obj2txt() on an ASN1_OBJECT and pass the
* result.
*/
static int test_x509_sig_aid(X509 *eecert, const char *ee_filename,
X509 *cacert, const char *ca_filename)
{
const ASN1_OBJECT *sig_oid = NULL;
const X509_ALGOR *alg = NULL;
int sig_nid = NID_undef, dig_nid = NID_undef, pkey_nid = NID_undef;
EVP_MD_CTX *mdctx = NULL;
EVP_PKEY_CTX *pctx = NULL;
EVP_PKEY *pkey = NULL;
unsigned char *algid_legacy = NULL;
int algid_legacy_len = 0;
static unsigned char algid_prov[OSSL_MAX_ALGORITHM_ID_SIZE];
size_t algid_prov_len = 0;
const OSSL_PARAM *gettable_params = NULL;
OSSL_PARAM params[] = {
OSSL_PARAM_octet_string("algorithm-id",
&algid_prov, sizeof(algid_prov)),
OSSL_PARAM_END
};
int ret = 0;
X509_get0_signature(NULL, &alg, eecert);
X509_ALGOR_get0(&sig_oid, NULL, NULL, alg);
if (!TEST_int_eq(X509_ALGOR_cmp(alg, X509_get0_tbs_sigalg(eecert)), 0))
goto end;
if (!TEST_int_ne(sig_nid = OBJ_obj2nid(sig_oid), NID_undef)
|| !TEST_true(OBJ_find_sigid_algs(sig_nid, &dig_nid, &pkey_nid))
|| !TEST_ptr(pkey = X509_get0_pubkey(cacert)))
goto end;
if (!TEST_true(EVP_PKEY_is_a(pkey, OBJ_nid2sn(pkey_nid)))) {
TEST_info("The '%s' pubkey can't be used to verify the '%s' signature",
ca_filename, ee_filename);
TEST_info("Signature algorithm is %s (pkey type %s, hash type %s)",
OBJ_nid2sn(sig_nid), OBJ_nid2sn(pkey_nid), OBJ_nid2sn(dig_nid));
TEST_info("Pkey key type is %s", EVP_PKEY_get0_type_name(pkey));
goto end;
}
if (!TEST_int_ge(algid_legacy_len = i2d_X509_ALGOR(alg, &algid_legacy), 0))
goto end;
if (!TEST_ptr(mdctx = EVP_MD_CTX_new())
|| !TEST_true(EVP_DigestVerifyInit_ex(mdctx, &pctx,
OBJ_nid2sn(dig_nid),
NULL, NULL, pkey, NULL))) {
TEST_info("Couldn't initialize a DigestVerify operation with "
"pkey type %s and hash type %s",
OBJ_nid2sn(pkey_nid), OBJ_nid2sn(dig_nid));
goto end;
}
if (!TEST_ptr(gettable_params = EVP_PKEY_CTX_gettable_params(pctx))
|| !TEST_ptr(OSSL_PARAM_locate_const(gettable_params, ALGORITHMID_NAME))) {
TEST_info("The %s provider keymgmt appears to lack support for algorithm-id"
" Skipping...",
OBJ_nid2sn(pkey_nid));
ret = 1;
goto end;
}
algid_prov[0] = '\0';
if (!TEST_true(EVP_PKEY_CTX_get_params(pctx, params)))
goto end;
algid_prov_len = params[0].return_size;
/* We now have all the algorithm IDs we need, let's compare them */
if (TEST_mem_eq(algid_legacy, algid_legacy_len,
algid_prov, algid_prov_len))
ret = 1;
end:
EVP_MD_CTX_free(mdctx);
/* pctx is free by EVP_MD_CTX_free() */
OPENSSL_free(algid_legacy);
return ret;
}
static int test_spki_file(void)
{
X509_PUBKEY *pubkey = NULL;
BIO *b = BIO_new_file(pubkey_filename, "r");
int ret = 0;
if (b == NULL) {
TEST_error("Couldn't open '%s' for reading\n", pubkey_filename);
TEST_openssl_errors();
goto end;
}
if ((pubkey = PEM_read_bio_X509_PUBKEY(b, NULL, NULL, NULL)) == NULL) {
TEST_error("'%s' doesn't appear to be a SubjectPublicKeyInfo in PEM format\n",
pubkey_filename);
TEST_openssl_errors();
goto end;
}
ret = test_spki_aid(pubkey, pubkey_filename);
end:
BIO_free(b);
X509_PUBKEY_free(pubkey);
return ret;
}
static int test_x509_files(void)
{
X509 *eecert = NULL, *cacert = NULL;
BIO *bee = NULL, *bca = NULL;
int ret = 0;
if ((bee = BIO_new_file(eecert_filename, "r")) == NULL) {
TEST_error("Couldn't open '%s' for reading\n", eecert_filename);
TEST_openssl_errors();
goto end;
}
if ((bca = BIO_new_file(cacert_filename, "r")) == NULL) {
TEST_error("Couldn't open '%s' for reading\n", cacert_filename);
TEST_openssl_errors();
goto end;
}
if ((eecert = PEM_read_bio_X509(bee, NULL, NULL, NULL)) == NULL) {
TEST_error("'%s' doesn't appear to be a X.509 certificate in PEM format\n",
eecert_filename);
TEST_openssl_errors();
goto end;
}
if ((cacert = PEM_read_bio_X509(bca, NULL, NULL, NULL)) == NULL) {
TEST_error("'%s' doesn't appear to be a X.509 certificate in PEM format\n",
cacert_filename);
TEST_openssl_errors();
goto end;
}
ret = test_x509_sig_aid(eecert, eecert_filename, cacert, cacert_filename)
& test_x509_spki_aid(eecert, eecert_filename)
& test_x509_spki_aid(cacert, cacert_filename);
end:
BIO_free(bee);
BIO_free(bca);
X509_free(eecert);
X509_free(cacert);
return ret;
}
typedef enum OPTION_choice {
OPT_ERR = -1,
OPT_EOF = 0,
OPT_X509,
OPT_SPKI,
OPT_TEST_ENUM
} OPTION_CHOICE;
const OPTIONS *test_get_options(void)
{
static const OPTIONS test_options[] = {
OPT_TEST_OPTIONS_WITH_EXTRA_USAGE("file...\n"),
{ "x509", OPT_X509, '-', "Test X.509 certificates. Requires two files" },
{ "spki", OPT_SPKI, '-', "Test public keys in SubjectPublicKeyInfo form. Requires one file" },
{ OPT_HELP_STR, 1, '-',
"file...\tFile(s) to run tests on. All files must be PEM encoded.\n" },
{ NULL }
};
return test_options;
}
int setup_tests(void)
{
OPTION_CHOICE o;
int n, x509 = 0, spki = 0, testcount = 0;
while ((o = opt_next()) != OPT_EOF) {
switch (o) {
case OPT_X509:
x509 = 1;
break;
case OPT_SPKI:
spki = 1;
break;
case OPT_TEST_CASES:
break;
default:
case OPT_ERR:
return 0;
}
}
/* |testcount| adds all the given test types together */
testcount = x509 + spki;
if (testcount < 1)
BIO_printf(bio_err, "No test type given\n");
else if (testcount > 1)
BIO_printf(bio_err, "Only one test type may be given\n");
if (testcount != 1)
return 0;
n = test_get_argument_count();
if (spki && n == 1) {
pubkey_filename = test_get_argument(0);
} else if (x509 && n == 2) {
eecert_filename = test_get_argument(0);
cacert_filename = test_get_argument(1);
}
if (spki && pubkey_filename == NULL) {
BIO_printf(bio_err, "Missing -spki argument\n");
return 0;
} else if (x509 && (eecert_filename == NULL || cacert_filename == NULL)) {
BIO_printf(bio_err, "Missing -x509 argument(s)\n");
return 0;
}
if (x509)
ADD_TEST(test_x509_files);
if (spki)
ADD_TEST(test_spki_file);
return 1;
}
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