tests: added basic test on "external" keys with gnutls_privkey_import_ext2()

Signed-off-by: Nikos Mavrogiannopoulos <nmav@gnutls.org>

2 files changed, 289 insertions, 1 deletions

diff --git a/tests/Makefile.am b/tests/Makefile.am
index 8e73ee7392..3ad0c84bae 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -111,7 +111,7 @@ ctests = mini-record-2 simple gc set_pkcs12_cred cert certuniqueid	\
 	 mini-record-retvals mini-server-name tls-etm x509-cert-callback \
 	 sign-md5-rep privkey-keygen mini-tls-nonblock no-signal pkcs7-gen dtls-etm \
 	 x509sign-verify-rsa x509sign-verify-ecdsa mini-alignment oids atfork prf psk-file \
-	 status-request status-request-ok status-request-missing \
+	 status-request status-request-ok status-request-missing sign-verify-ext \
 	 fallback-scsv pkcs8-key-decode urls dtls-rehandshake-cert \
 	 key-usage-rsa key-usage-ecdhe-rsa mini-session-verify-function auto-verify \
 	 record-timeouts mini-dtls-hello-verify-48 mini-x509-default-prio \
diff --git a/tests/sign-verify-ext.c b/tests/sign-verify-ext.c
new file mode 100644
index 0000000000..08990be6d3
--- /dev/null
+++ b/tests/sign-verify-ext.c
@@ -0,0 +1,288 @@
+/*
+ * Copyright (C) 2017 Nikos Mavrogiannopoulos
+ *
+ * Author: Nikos Mavrogiannopoulos
+ *
+ * This file is part of GnuTLS.
+ *
+ * GnuTLS is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GnuTLS is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GnuTLS; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+
+/* This tests the gnutls_privkey_import_ext2() APIs */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#ifndef _WIN32
+# include <netinet/in.h>
+# include <sys/socket.h>
+# include <arpa/inet.h>
+#endif
+#include <unistd.h>
+#include <gnutls/gnutls.h>
+#include <gnutls/x509.h>
+#include <gnutls/abstract.h>
+#include "cert-common.h"
+#include "utils.h"
+
+static void tls_log_func(int level, const char *str)
+{
+	fprintf(stderr, "<%d> %s", level, str);
+}
+
+/* sha1 hash of "hello" string */
+const gnutls_datum_t sha1_hash_data = {
+	(void *)
+	    "\xaa\xf4\xc6\x1d\xdc\xc5\xe8\xa2\xda\xbe"
+	    "\xde\x0f\x3b\x48\x2c\xd9\xae\xa9\x43\x4d",
+	20
+};
+
+const gnutls_datum_t sha256_hash_data = {
+	(void *)
+	    "\x2c\xf2\x4d\xba\x5f\xb0\xa3\x0e\x26\xe8\x3b\x2a\xc5\xb9\xe2\x9e"
+	    "\x1b\x16\x1e\x5c\x1f\xa7\x42\x5e\x73\x04\x33\x62\x93\x8b\x98\x24",
+	32
+};
+
+const gnutls_datum_t raw_data = {
+	(void *) "hello",
+	5
+};
+
+struct tests_st {
+	const char *name;
+	gnutls_datum_t key;
+	gnutls_datum_t cert;
+	gnutls_pk_algorithm_t pk;
+	unsigned digest;
+	unsigned sigalgo;
+	unsigned sign_flags;
+};
+
+struct tests_st tests[] = {
+	{
+		.name = "rsa key",
+		.cert = {(void *) cli_ca3_cert_pem, sizeof(cli_ca3_cert_pem)-1},
+		.key = {(void *) cli_ca3_key_pem, sizeof(cli_ca3_key_pem)-1},
+		.pk = GNUTLS_PK_RSA,
+		.digest = GNUTLS_DIG_SHA256,
+		.sigalgo = GNUTLS_SIGN_RSA_SHA256
+	},
+	{
+		.name = "dsa key",
+		.key = {(void *) clidsa_ca3_key_pem, sizeof(clidsa_ca3_key_pem)-1},
+		.cert = {(void *) clidsa_ca3_cert_pem, sizeof(clidsa_ca3_cert_pem)-1},
+		.pk = GNUTLS_PK_DSA,
+		.digest = GNUTLS_DIG_SHA1,
+		.sigalgo = GNUTLS_SIGN_DSA_SHA1
+	},
+	{
+		.name = "ecdsa key",
+		.key = {(void *) server_ca3_ecc_key_pem, sizeof(server_ca3_ecc_key_pem)-1},
+		.cert = {(void *) server_localhost_ca3_ecc_cert_pem, sizeof(server_localhost_ca3_ecc_cert_pem)-1},
+		.pk = GNUTLS_PK_ECDSA,
+		.digest = GNUTLS_DIG_SHA256,
+		.sigalgo = GNUTLS_SIGN_ECDSA_SHA256
+	},
+#if 0
+	{
+		.name = "rsa pss key",
+		.key = {(void *) server_ca3_rsa_pss_key_pem, sizeof(server_ca3_rsa_pss_key_pem)-1},
+		.cert = {(void *) server_ca3_rsa_pss_cert_pem, sizeof(server_ca3_rsa_pss_cert_pem)-1},
+		.pk = GNUTLS_PK_RSA_PSS,
+		.digest = GNUTLS_DIG_SHA256,
+		.sign_flags = GNUTLS_PRIVKEY_SIGN_FLAG_RSA_PSS,
+		.sigalgo = GNUTLS_SIGN_RSA_PSS_SHA256
+	}
+#endif
+};
+
+struct key_cb_data {
+	gnutls_privkey_t rkey; /* the real thing */
+};
+
+static
+int key_cb_sign_func (gnutls_privkey_t key, void* userdata, const gnutls_datum_t * data,
+	gnutls_datum_t * signature)
+{
+	struct key_cb_data *p = userdata;
+	
+	return gnutls_privkey_sign_hash(p->rkey, 0, GNUTLS_PRIVKEY_SIGN_FLAG_TLS1_RSA, data, signature);
+}
+
+static void key_cb_deinit_func(gnutls_privkey_t key, void* userdata)
+{
+	struct key_cb_data *p = userdata;
+	gnutls_privkey_deinit(p->rkey);
+	free(userdata);
+}
+
+static gnutls_privkey_t load_virt_privkey(const gnutls_datum_t *txtkey, gnutls_pk_algorithm_t pk)
+{
+	gnutls_privkey_t privkey;
+	struct key_cb_data *userdata;
+	int ret;
+
+	userdata = calloc(1, sizeof(struct key_cb_data));
+	if (userdata == NULL) {
+		fail("memory error\n");
+	}
+
+	ret = gnutls_privkey_init(&privkey);
+	if (ret < 0)
+		fail("gnutls_privkey_init\n");
+
+	ret = gnutls_privkey_init(&userdata->rkey);
+	if (ret < 0)
+		fail("gnutls_privkey_init\n");
+
+	ret =
+	    gnutls_privkey_import_x509_raw(userdata->rkey, txtkey, GNUTLS_X509_FMT_PEM, NULL, 0);
+	if (ret < 0)
+		fail("gnutls_privkey_import\n");
+
+	ret = gnutls_privkey_import_ext2(privkey, pk, userdata, key_cb_sign_func, NULL, key_cb_deinit_func, GNUTLS_PRIVKEY_IMPORT_AUTO_RELEASE);
+	if (ret < 0)	
+		fail("gnutls_privkey_import_ext2\n");
+
+	return privkey;
+}
+
+#define testfail(fmt, ...) \
+	fail("%s: "fmt, tests[i].name, ##__VA_ARGS__)
+
+void doit(void)
+{
+	gnutls_pubkey_t pubkey;
+	gnutls_privkey_t privkey;
+	gnutls_sign_algorithm_t sign_algo;
+	gnutls_datum_t signature;
+	gnutls_datum_t signature2;
+	int ret;
+	size_t i;
+	const gnutls_datum_t *hash_data;
+
+	global_init();
+
+	gnutls_global_set_log_function(tls_log_func);
+	if (debug)
+		gnutls_global_set_log_level(6);
+
+	for (i = 0; i < sizeof(tests) / sizeof(tests[0]); i++) {
+		if (debug)
+			success("loop %d: %s\n", (int) i, tests[i].name);
+
+		if (tests[i].digest == GNUTLS_DIG_SHA1) {
+			hash_data = &sha1_hash_data;
+		} else {
+			hash_data = &sha256_hash_data;
+		}
+
+		privkey = load_virt_privkey(&tests[i].key, tests[i].pk);
+
+		ret = gnutls_pubkey_init(&pubkey);
+		if (ret < 0)
+			testfail("gnutls_privkey_init\n");
+
+		ret = gnutls_privkey_sign_hash(privkey, tests[i].digest, tests[i].sign_flags,
+						hash_data, &signature2);
+		if (ret < 0)
+			testfail("gnutls_privkey_sign_hash\n");
+
+		ret = gnutls_privkey_sign_data(privkey, tests[i].digest, tests[i].sign_flags,
+						&raw_data, &signature);
+		if (ret < 0)
+			testfail("gnutls_x509_privkey_sign_hash\n");
+
+		ret = gnutls_pubkey_import_x509_raw(pubkey, &tests[i].cert, GNUTLS_X509_FMT_PEM, 0);
+		if (ret < 0)
+			testfail("gnutls_x509_pubkey_import\n");
+
+		ret =
+		    gnutls_pubkey_verify_hash2(pubkey, tests[i].sigalgo, GNUTLS_VERIFY_ALLOW_SIGN_WITH_SHA1, hash_data,
+					      &signature);
+		if (ret < 0)
+			testfail("gnutls_pubkey_verify_hash2\n");
+
+		ret =
+		    gnutls_pubkey_verify_hash2(pubkey, tests[i].sigalgo, GNUTLS_VERIFY_ALLOW_SIGN_WITH_SHA1, hash_data,
+					      &signature2);
+		if (ret < 0)
+			testfail("gnutls_pubkey_verify_hash2-1 (hashed data)\n");
+
+		/* test the raw interface */
+		gnutls_free(signature.data);
+		signature.data = NULL;
+		gnutls_free(signature2.data);
+		signature2.data = NULL;
+
+		if (gnutls_pubkey_get_pk_algorithm(pubkey, NULL) ==
+		    GNUTLS_PK_RSA) {
+
+			ret =
+			    gnutls_privkey_sign_hash(privkey,
+						     tests[i].digest,
+						     GNUTLS_PRIVKEY_SIGN_FLAG_TLS1_RSA,
+						     hash_data,
+						     &signature);
+			if (ret < 0)
+				testfail("gnutls_privkey_sign_hash: %s\n",
+				     gnutls_strerror(ret));
+
+			sign_algo =
+			    gnutls_pk_to_sign
+			    (gnutls_pubkey_get_pk_algorithm(pubkey, NULL),
+			     tests[i].digest);
+
+			ret =
+			    gnutls_pubkey_verify_hash2(pubkey, sign_algo,
+							GNUTLS_PUBKEY_VERIFY_FLAG_TLS1_RSA,
+							hash_data,
+							&signature);
+			if (ret < 0)
+				testfail("gnutls_pubkey_verify_hash-3 (raw hashed data)\n");
+
+			gnutls_free(signature.data);
+			/* test the legacy API */
+			ret =
+			    gnutls_privkey_sign_raw_data(privkey, 0,
+							 hash_data,
+							 &signature);
+			if (ret < 0)
+				testfail("gnutls_privkey_sign_raw_data: %s\n",
+				     gnutls_strerror(ret));
+
+			ret =
+			    gnutls_pubkey_verify_hash2(pubkey, sign_algo,
+							GNUTLS_PUBKEY_VERIFY_FLAG_TLS1_RSA,
+							hash_data,
+							&signature);
+			if (ret < 0)
+				testfail("gnutls_pubkey_verify_hash-4 (legacy raw hashed data)\n");
+		}
+		gnutls_free(signature.data);
+		gnutls_free(signature2.data);
+		gnutls_privkey_deinit(privkey);
+		gnutls_pubkey_deinit(pubkey);
+	}
+
+	gnutls_global_deinit();
+}