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388eb0d970
Providers produce algorithm IDs of their own, and we need to compare them against the same thing produced by libcrypto's ASN.1 code and with legacy keys. This tester can compare algorithm IDs for signatures and for keys, given certificates that hold such data. To verify key algorithm IDs, only one certificate is necessary, and its public key is used. To verify certificate algorithm IDs, we need to launch the signature operation that would verify a certificate against the public key of its signing CA, so that test needs two files. Reviewed-by: Tomas Mraz <tomas@openssl.org> (Merged from https://github.com/openssl/openssl/pull/14049)
339 lines
11 KiB
C
339 lines
11 KiB
C
/*
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* Copyright 2021 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <openssl/asn1.h>
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#include <openssl/pem.h>
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#include "internal/sizes.h"
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#include "crypto/evp.h"
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#include "testutil.h"
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/* Collected arguments */
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static const char *eecert_filename = NULL; /* For test_x509_file() */
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static const char *cacert_filename = NULL; /* For test_x509_file() */
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static const char *pubkey_filename = NULL; /* For test_spki_file() */
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#define ALGORITHMID_NAME "algorithm-id"
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static int test_spki_aid(X509_PUBKEY *pubkey, const char *filename)
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{
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const ASN1_OBJECT *oid;
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X509_ALGOR *alg = NULL;
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EVP_PKEY *pkey = NULL;
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EVP_KEYMGMT *keymgmt = NULL;
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void *keydata = NULL;
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char name[OSSL_MAX_NAME_SIZE] = "";
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unsigned char *algid_legacy = NULL;
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int algid_legacy_len = 0;
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static unsigned char algid_prov[OSSL_MAX_ALGORITHM_ID_SIZE];
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size_t algid_prov_len = 0;
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const OSSL_PARAM *gettable_params = NULL;
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OSSL_PARAM params[] = {
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OSSL_PARAM_octet_string(ALGORITHMID_NAME,
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&algid_prov, sizeof(algid_prov)),
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OSSL_PARAM_END
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};
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int ret = 0;
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if (!TEST_true(X509_PUBKEY_get0_param(NULL, NULL, NULL, &alg, pubkey))
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|| !TEST_ptr(pkey = X509_PUBKEY_get0(pubkey)))
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goto end;
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if (!TEST_int_ge(algid_legacy_len = i2d_X509_ALGOR(alg, &algid_legacy), 0))
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goto end;
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X509_ALGOR_get0(&oid, NULL, NULL, alg);
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if (!TEST_true(OBJ_obj2txt(name, sizeof(name), oid, 0)))
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goto end;
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/*
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* We use an internal functions to ensure we have a provided key.
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* Note that |keydata| should not be freed, as it's cached in |pkey|.
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* The |keymgmt|, however, should, as its reference count is incremented
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* in this function.
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*/
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if ((keydata = evp_pkey_export_to_provider(pkey, NULL,
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&keymgmt, NULL)) == NULL) {
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TEST_info("The public key found in '%s' doesn't have provider support."
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" Skipping...",
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filename);
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ret = 1;
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goto end;
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}
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if (!TEST_true(EVP_KEYMGMT_is_a(keymgmt, name))) {
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TEST_info("The AlgorithmID key type (%s) for the public key found in"
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" '%s' doesn't match the key type of the extracted public"
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" key.",
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name, filename);
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ret = 1;
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goto end;
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}
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if (!TEST_ptr(gettable_params = EVP_KEYMGMT_gettable_params(keymgmt))
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|| !TEST_ptr(OSSL_PARAM_locate_const(gettable_params, ALGORITHMID_NAME))) {
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TEST_info("The %s provider keymgmt appears to lack support for algorithm-id."
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" Skipping...",
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name);
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ret = 1;
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goto end;
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}
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algid_prov[0] = '\0';
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if (!TEST_true(evp_keymgmt_get_params(keymgmt, keydata, params)))
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goto end;
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algid_prov_len = params[0].return_size;
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/* We now have all the algorithm IDs we need, let's compare them */
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if (TEST_mem_eq(algid_legacy, algid_legacy_len,
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algid_prov, algid_prov_len))
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ret = 1;
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end:
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EVP_KEYMGMT_free(keymgmt);
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OPENSSL_free(algid_legacy);
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return ret;
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}
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static int test_x509_spki_aid(X509 *cert, const char *filename)
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{
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X509_PUBKEY *pubkey = X509_get_X509_PUBKEY(cert);
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return test_spki_aid(pubkey, filename);
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}
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/*
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* TODO
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* When we gain the ability to get an EVP_SIGNATURE with a complete signature
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* algorithm name (like "sha1WithRSAEncryption" or its corresponding OID in
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* text form, "1.2.840.113549.1.1.2"), we won't have to limit this test to
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* what we have in libcrypto's cross-reference db, i.e. won't have to call
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* OBJ_find_sigid_algs() to find out the EVP_PKEY_METHOD NID any more.
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* All we'd have to do is used OBJ_obj2txt() on an ASN1_OBJECT and pass the
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* result.
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*/
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static int test_x509_sig_aid(X509 *eecert, const char *ee_filename,
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X509 *cacert, const char *ca_filename)
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{
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const ASN1_OBJECT *sig_oid = NULL;
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const X509_ALGOR *alg = NULL;
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int sig_nid = NID_undef, dig_nid = NID_undef, pkey_nid = NID_undef;
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EVP_MD_CTX *mdctx = NULL;
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EVP_PKEY_CTX *pctx = NULL;
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EVP_PKEY *pkey = NULL;
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unsigned char *algid_legacy = NULL;
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int algid_legacy_len = 0;
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static unsigned char algid_prov[OSSL_MAX_ALGORITHM_ID_SIZE];
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size_t algid_prov_len = 0;
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const OSSL_PARAM *gettable_params = NULL;
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OSSL_PARAM params[] = {
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OSSL_PARAM_octet_string("algorithm-id",
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&algid_prov, sizeof(algid_prov)),
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OSSL_PARAM_END
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};
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int ret = 0;
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X509_get0_signature(NULL, &alg, eecert);
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X509_ALGOR_get0(&sig_oid, NULL, NULL, alg);
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if (!TEST_int_eq(X509_ALGOR_cmp(alg, X509_get0_tbs_sigalg(eecert)), 0))
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goto end;
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if (!TEST_int_ne(sig_nid = OBJ_obj2nid(sig_oid), NID_undef)
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|| !TEST_true(OBJ_find_sigid_algs(sig_nid, &dig_nid, &pkey_nid))
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|| !TEST_ptr(pkey = X509_get0_pubkey(cacert)))
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goto end;
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if (!TEST_true(EVP_PKEY_is_a(pkey, OBJ_nid2sn(pkey_nid)))) {
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TEST_info("The '%s' pubkey can't be used to verify the '%s' signature",
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ca_filename, ee_filename);
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TEST_info("Signature algorithm is %s (pkey type %s, hash type %s)",
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OBJ_nid2sn(sig_nid), OBJ_nid2sn(pkey_nid), OBJ_nid2sn(dig_nid));
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TEST_info("Pkey key type is %s", EVP_PKEY_get0_first_alg_name(pkey));
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goto end;
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}
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if (!TEST_int_ge(algid_legacy_len = i2d_X509_ALGOR(alg, &algid_legacy), 0))
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goto end;
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if (!TEST_ptr(mdctx = EVP_MD_CTX_new())
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|| !TEST_true(EVP_DigestVerifyInit_ex(mdctx, &pctx,
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OBJ_nid2sn(dig_nid),
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NULL, NULL, pkey))) {
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TEST_info("Couldn't initialize a DigestVerify operation with "
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"pkey type %s and hash type %s",
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OBJ_nid2sn(pkey_nid), OBJ_nid2sn(dig_nid));
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goto end;
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}
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if (!TEST_ptr(gettable_params = EVP_PKEY_CTX_gettable_params(pctx))
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|| !TEST_ptr(OSSL_PARAM_locate_const(gettable_params, ALGORITHMID_NAME))) {
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TEST_info("The %s provider keymgmt appears to lack support for algorithm-id"
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" Skipping...",
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OBJ_nid2sn(pkey_nid));
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ret = 1;
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goto end;
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}
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algid_prov[0] = '\0';
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if (!TEST_true(EVP_PKEY_CTX_get_params(pctx, params)))
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goto end;
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algid_prov_len = params[0].return_size;
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/* We now have all the algorithm IDs we need, let's compare them */
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if (TEST_mem_eq(algid_legacy, algid_legacy_len,
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algid_prov, algid_prov_len))
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ret = 1;
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end:
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EVP_MD_CTX_free(mdctx);
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/* pctx is free by EVP_MD_CTX_free() */
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OPENSSL_free(algid_legacy);
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return ret;
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}
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static int test_spki_file(void)
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{
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X509_PUBKEY *pubkey = NULL;
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BIO *b = BIO_new_file(pubkey_filename, "r");
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int ret = 0;
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if (b == NULL) {
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TEST_error("Couldn't open '%s' for reading\n", pubkey_filename);
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TEST_openssl_errors();
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goto end;
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}
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if ((pubkey = PEM_read_bio_X509_PUBKEY(b, NULL, NULL, NULL)) == NULL) {
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TEST_error("'%s' doesn't appear to be a SubjectPublicKeyInfo in PEM format\n",
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pubkey_filename);
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TEST_openssl_errors();
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goto end;
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}
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ret = test_spki_aid(pubkey, pubkey_filename);
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end:
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BIO_free(b);
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X509_PUBKEY_free(pubkey);
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return ret;
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}
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static int test_x509_files(void)
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{
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X509 *eecert = NULL, *cacert = NULL;
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BIO *bee = NULL, *bca = NULL;
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int ret = 0;
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if ((bee = BIO_new_file(eecert_filename, "r")) == NULL) {
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TEST_error("Couldn't open '%s' for reading\n", eecert_filename);
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TEST_openssl_errors();
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goto end;
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}
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if ((bca = BIO_new_file(cacert_filename, "r")) == NULL) {
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TEST_error("Couldn't open '%s' for reading\n", cacert_filename);
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TEST_openssl_errors();
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goto end;
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}
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if ((eecert = PEM_read_bio_X509(bee, NULL, NULL, NULL)) == NULL) {
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TEST_error("'%s' doesn't appear to be a X.509 certificate in PEM format\n",
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eecert_filename);
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TEST_openssl_errors();
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goto end;
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}
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if ((cacert = PEM_read_bio_X509(bca, NULL, NULL, NULL)) == NULL) {
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TEST_error("'%s' doesn't appear to be a X.509 certificate in PEM format\n",
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cacert_filename);
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TEST_openssl_errors();
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goto end;
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}
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ret = test_x509_sig_aid(eecert, eecert_filename, cacert, cacert_filename)
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& test_x509_spki_aid(eecert, eecert_filename)
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& test_x509_spki_aid(cacert, cacert_filename);
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end:
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BIO_free(bee);
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BIO_free(bca);
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X509_free(eecert);
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X509_free(cacert);
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return ret;
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}
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typedef enum OPTION_choice {
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OPT_ERR = -1,
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OPT_EOF = 0,
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OPT_X509,
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OPT_SPKI,
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OPT_TEST_ENUM
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} OPTION_CHOICE;
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const OPTIONS *test_get_options(void)
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{
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static const OPTIONS test_options[] = {
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OPT_TEST_OPTIONS_WITH_EXTRA_USAGE("file...\n"),
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{ "x509", OPT_X509, '-', "Test X.509 certificates. Requires two files" },
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{ "spki", OPT_SPKI, '-', "Test public keys in SubjectPublicKeyInfo form. Requires one file" },
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{ OPT_HELP_STR, 1, '-',
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"file...\tFile(s) to run tests on. All files must be PEM encoded.\n" },
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{ NULL }
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};
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return test_options;
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}
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int setup_tests(void)
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{
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OPTION_CHOICE o;
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int n, x509 = 0, spki = 0, testcount = 0;
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while ((o = opt_next()) != OPT_EOF) {
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switch (o) {
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case OPT_X509:
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x509 = 1;
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break;
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case OPT_SPKI:
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spki = 1;
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break;
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case OPT_TEST_CASES:
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break;
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default:
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case OPT_ERR:
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return 0;
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}
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}
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/* |testcount| adds all the given test types together */
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testcount = x509 + spki;
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if (testcount < 1)
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BIO_printf(bio_err, "No test type given\n");
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else if (testcount > 1)
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BIO_printf(bio_err, "Only one test type may be given\n");
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if (testcount != 1)
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return 0;
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n = test_get_argument_count();
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if (spki && n == 1) {
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pubkey_filename = test_get_argument(0);
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} else if (x509 && n == 2) {
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eecert_filename = test_get_argument(0);
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cacert_filename = test_get_argument(1);
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}
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if (spki && pubkey_filename == NULL) {
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BIO_printf(bio_err, "Missing -spki argument\n");
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return 0;
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} else if (x509 && (eecert_filename == NULL || cacert_filename == NULL)) {
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BIO_printf(bio_err, "Missing -x509 argument(s)\n");
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return 0;
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}
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if (x509)
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ADD_TEST(test_x509_files);
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if (spki)
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ADD_TEST(test_spki_file);
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return 1;
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}
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