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/*
* Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License").
* You may not use this file except in compliance with the License.
* A copy of the License is located at
*
* http://aws.amazon.com/apache2.0
*
* or in the "license" file accompanying this file. This file is distributed
* on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
* express or implied. See the License for the specific language governing
* permissions and limitations under the License.
*/
#include "crypto/s2n_openssl_x509.h"
#include <openssl/pem.h>
#include <openssl/x509.h>
#include "s2n_test.h"
#include "testlib/s2n_testlib.h"
S2N_RESULT s2n_x509_validator_read_asn1_cert(struct s2n_stuffer *cert_chain_in_stuffer,
struct s2n_blob *asn1_cert);
int main(int argc, char **argv)
{
BEGIN_TEST();
/* A certificate with one trailing byte is parsed successfully */
{
uint8_t cert_chain_data[S2N_MAX_TEST_PEM_SIZE] = { 0 };
uint32_t cert_chain_len = 0;
EXPECT_SUCCESS(s2n_read_test_pem_and_len(S2N_ONE_TRAILING_BYTE_CERT_BIN, cert_chain_data,
&cert_chain_len, S2N_MAX_TEST_PEM_SIZE));
struct s2n_blob cert_chain_blob = { 0 };
EXPECT_SUCCESS(s2n_blob_init(&cert_chain_blob, cert_chain_data, cert_chain_len));
DEFER_CLEANUP(struct s2n_stuffer cert_chain_stuffer = { 0 }, s2n_stuffer_free);
EXPECT_SUCCESS(s2n_stuffer_init_written(&cert_chain_stuffer, &cert_chain_blob));
struct s2n_blob cert_asn1_der = { 0 };
EXPECT_OK(s2n_x509_validator_read_asn1_cert(&cert_chain_stuffer, &cert_asn1_der));
{
DEFER_CLEANUP(X509 *cert = NULL, X509_free_pointer);
EXPECT_OK(s2n_openssl_x509_parse(&cert_asn1_der, &cert));
}
{
DEFER_CLEANUP(X509 *cert = NULL, X509_free_pointer);
EXPECT_OK(s2n_openssl_x509_parse_without_length_validation(&cert_asn1_der, &cert));
}
}
/* A certificate with too many trailing bytes errors */
{
uint8_t cert_chain_data[S2N_MAX_TEST_PEM_SIZE] = { 0 };
uint32_t cert_chain_len = 0;
EXPECT_SUCCESS(s2n_read_test_pem_and_len(S2N_FOUR_TRAILING_BYTE_CERT_BIN, cert_chain_data,
&cert_chain_len, S2N_MAX_TEST_PEM_SIZE));
struct s2n_blob cert_chain_blob = { 0 };
EXPECT_SUCCESS(s2n_blob_init(&cert_chain_blob, cert_chain_data, cert_chain_len));
DEFER_CLEANUP(struct s2n_stuffer cert_chain_stuffer = { 0 }, s2n_stuffer_free);
EXPECT_SUCCESS(s2n_stuffer_init_written(&cert_chain_stuffer, &cert_chain_blob));
struct s2n_blob cert_asn1_der = { 0 };
EXPECT_OK(s2n_x509_validator_read_asn1_cert(&cert_chain_stuffer, &cert_asn1_der));
{
DEFER_CLEANUP(X509 *cert = NULL, X509_free_pointer);
EXPECT_ERROR(s2n_openssl_x509_parse(&cert_asn1_der, &cert));
}
{
DEFER_CLEANUP(X509 *cert = NULL, X509_free_pointer);
EXPECT_OK(s2n_openssl_x509_parse_without_length_validation(&cert_asn1_der, &cert));
}
}
/* s2n_openssl_x509_get_cert_info */
struct {
const char *key_type;
const char *signature;
const char *key_size;
const char *digest;
int expected_signature_nid;
int expected_digest_nid;
} test_cases[] = {
{
.key_type = "ec",
.signature = "ecdsa",
.key_size = "p384",
.digest = "sha256",
.expected_signature_nid = NID_ecdsa_with_SHA256,
.expected_digest_nid = NID_sha256,
},
{
.key_type = "ec",
.signature = "ecdsa",
.key_size = "p256",
.digest = "sha384",
.expected_signature_nid = NID_ecdsa_with_SHA384,
.expected_digest_nid = NID_sha384,
},
{
.key_type = "ec",
.signature = "ecdsa",
.key_size = "p521",
.digest = "sha512",
.expected_signature_nid = NID_ecdsa_with_SHA512,
.expected_digest_nid = NID_sha512,
},
{
.key_type = "rsae",
.signature = "pkcs",
.key_size = "2048",
.digest = "sha1",
.expected_signature_nid = NID_sha1WithRSAEncryption,
.expected_digest_nid = NID_sha1,
},
{
.key_type = "rsae",
.signature = "pkcs",
.key_size = "2048",
.digest = "sha224",
.expected_signature_nid = NID_sha224WithRSAEncryption,
.expected_digest_nid = NID_sha224,
},
{
.key_type = "rsae",
.signature = "pkcs",
.key_size = "3072",
.digest = "sha384",
.expected_signature_nid = NID_sha384WithRSAEncryption,
.expected_digest_nid = NID_sha384,
},
/* openssl 1.0.* does not support rsapss signatures */
#if S2N_OPENSSL_VERSION_AT_LEAST(1, 1, 0)
{
.key_type = "rsae",
.signature = "pss",
.key_size = "4096",
.digest = "sha384",
.expected_signature_nid = NID_rsassaPss,
.expected_digest_nid = NID_undef,
},
{
.key_type = "rsapss",
.signature = "pss",
.key_size = "2048",
.digest = "sha256",
.expected_signature_nid = NID_rsassaPss,
.expected_digest_nid = NID_undef,
},
#endif
};
for (size_t i = 0; i < s2n_array_len(test_cases); i++) {
/* initialize variables and read in certificates */
char pathbuffer[S2N_MAX_TEST_PEM_PATH_LENGTH] = { 0 };
uint8_t cert_file[S2N_MAX_TEST_PEM_SIZE] = { 0 };
EXPECT_OK(s2n_test_cert_permutation_get_server_chain_path(&pathbuffer[0],
test_cases[i].key_type, test_cases[i].signature, test_cases[i].key_size,
test_cases[i].digest));
EXPECT_SUCCESS(s2n_read_test_pem(pathbuffer, (char *) cert_file, S2N_MAX_TEST_PEM_SIZE));
DEFER_CLEANUP(X509 *leaf = NULL, X509_free_pointer);
DEFER_CLEANUP(X509 *intermediate = NULL, X509_free_pointer);
DEFER_CLEANUP(X509 *root = NULL, X509_free_pointer);
/* read in cert chain */
size_t chain_len = strlen((const char *) cert_file);
BIO *cert_bio = NULL;
EXPECT_NOT_NULL(cert_bio = BIO_new(BIO_s_mem()));
EXPECT_TRUE(BIO_write(cert_bio, cert_file, chain_len) > 0);
EXPECT_NOT_NULL(leaf = PEM_read_bio_X509(cert_bio, NULL, NULL, NULL));
EXPECT_NOT_NULL(intermediate = PEM_read_bio_X509(cert_bio, NULL, NULL, NULL));
EXPECT_NOT_NULL(root = PEM_read_bio_X509(cert_bio, NULL, NULL, NULL));
EXPECT_SUCCESS(BIO_free(cert_bio));
/* retrieve cert info from test case certificates */
struct s2n_cert_info leaf_info = { 0 };
struct s2n_cert_info intermediate_info = { 0 };
struct s2n_cert_info root_info = { 0 };
EXPECT_OK(s2n_openssl_x509_get_cert_info(leaf, &leaf_info));
EXPECT_OK(s2n_openssl_x509_get_cert_info(intermediate, &intermediate_info));
EXPECT_OK(s2n_openssl_x509_get_cert_info(root, &root_info));
/* assert that cert info matches expected values */
EXPECT_EQUAL(leaf_info.signature_nid, test_cases[i].expected_signature_nid);
EXPECT_EQUAL(leaf_info.signature_digest_nid, test_cases[i].expected_digest_nid);
EXPECT_EQUAL(leaf_info.self_signed, false);
/* leaf and intermediate should have the same infos */
EXPECT_EQUAL(memcmp(&leaf_info, &intermediate_info, sizeof(struct s2n_cert_info)), 0);
/* root should be self-signed */
EXPECT_EQUAL(root_info.signature_nid, test_cases[i].expected_signature_nid);
EXPECT_EQUAL(root_info.signature_digest_nid, test_cases[i].expected_digest_nid);
EXPECT_EQUAL(root_info.self_signed, true);
}
END_TEST();
}
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