20 files changed, 469 insertions, 39 deletions

diff --git a/Makefile.am b/Makefile.am
index 20ad25258..693ddeb37 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,2 +1,2 @@
 ACLOCAL_AMFLAGS = -I m4
-SUBDIRS = libtap src tests samples doc man patches
+SUBDIRS = libtap dnssec src tests samples doc man patches
diff --git a/configure.ac b/configure.ac
index c28e2b0dd..e4f8f6467 100644
--- a/configure.ac
+++ b/configure.ac
@@ -101,6 +101,9 @@ if test "$enable_systemd" = yes; then
     AC_DEFINE([ENABLE_SYSTEMD_NOTIFY], [1], [Use systemd notifications.])
 fi
 
+# GnuTLS crypto backend
+PKG_CHECK_MODULES([gnutls], [gnutls nettle])
+
 # Debug modules
 AC_ARG_ENABLE([debug],
     AS_HELP_STRING([--enable-debug=server,zones,xfr,packet,rr,ns,loader,dnssec],
@@ -364,6 +367,8 @@ AC_CONFIG_FILES([Makefile
 		 src/Makefile
 		 tests/Makefile
 		 src/zscanner/Makefile
+		 dnssec/Makefile
+		 dnssec/tests/Makefile
 		 man/khost.1
 		 man/knotc.8
 		 man/knotd.8
@@ -388,5 +393,6 @@ echo "
   Ragel: ${RAGEL} ${FSM_TYPE}
   Utils with IDN: ${libidn}
   Use systemd notifications: ${enable_systemd}
+  GnuTLS: CFLAGS: ${gnutls_CFLAGS} LIBS: ${gnutls_LIBS}
 
   Continue with 'make' command"
diff --git a/dnssec/.gitignore b/dnssec/.gitignore
new file mode 100644
index 000000000..b336cc7ce
--- /dev/null
+++ b/dnssec/.gitignore
@@ -0,0 +1,2 @@
+/Makefile
+/Makefile.in
diff --git a/dnssec/Makefile.am b/dnssec/Makefile.am
index a823dace0..346f893b2 100644
--- a/dnssec/Makefile.am
+++ b/dnssec/Makefile.am
@@ -5,8 +5,11 @@ SUBDIRS = tests
 
 lib_LTLIBRARIES = libdnssec.la
 
-libdnssec_la_CFLAGS = $(AM_CFLAGS) $(GNUTLS_CFLAGS) -fvisibility=hidden
-libdnssec_la_LDFLAGS = $(GNUTLS_LIBS) -version-info 0:1:0
+libdnssec_la_CFLAGS = $(AM_CFLAGS) $(gnutls_CFLAGS) -fvisibility=hidden
+libdnssec_la_LDFLAGS = $(gnutls_LIBS) -version-info 0:1:0
 libdnssec_la_SOURCES =	\
-	src/key.c	\
-	src/key.h
+	src/binary.h	src/binary.c	\
+	src/binary.h	src/binary.c	\
+	src/key.h	src/key.c	\
+	src/keystore.h	src/keystore.c	\
+	src/sign.h	src/sign.c
diff --git a/dnssec/src/binary.c b/dnssec/src/binary.c
new file mode 100644
index 000000000..197a89419
--- /dev/null
+++ b/dnssec/src/binary.c
@@ -0,0 +1,63 @@
+#include <assert.h>
+#include <nettle/base64.h>
+
+#include "binary.h"
+#include "error.h"
+
+static size_t base64_decode_raw(const uint8_t *src, size_t src_len,
+				uint8_t *dst, size_t dst_max_size)
+{
+	assert(src);
+	assert(dst);
+
+	struct base64_decode_ctx ctx;
+	base64_decode_init(&ctx);
+
+	unsigned dst_size = dst_max_size;
+	int result = base64_decode_update(&ctx, &dst_size, dst, src_len, src);
+	if (result != 1) {
+		return 0;
+	}
+
+	return (size_t) dst_size;
+}
+
+int dnssec_binary_from_base64(dnssec_binary_t *binary, const uint8_t *base64, size_t base64_size)
+{
+	if (!binary || !base64) {
+		return DNSSEC_EINVAL;
+	}
+
+	size_t raw_size = BASE64_DECODE_LENGTH(base64_size);
+	uint8_t *raw = malloc(raw_size);
+	if (raw == NULL) {
+		return DNSSEC_ENOMEM;
+	}
+
+	size_t real_size = base64_decode_raw(base64, base64_size, raw, raw_size);
+	if (real_size == 0) {
+		free(raw);
+		return DNSSEC_EINVAL;
+	}
+
+	if (real_size < raw_size) {
+		raw = realloc(raw, real_size);
+	}
+
+	binary->data = raw;
+	binary->size = real_size;
+
+	return DNSSEC_EOK;
+}
+
+void dnssec_binary_free(dnssec_binary_t *binary)
+{
+	if (!binary) {
+		return;
+	}
+
+	free(binary->data);
+
+	binary->data = NULL;
+	binary->size = 0;
+}
diff --git a/dnssec/src/binary.h b/dnssec/src/binary.h
index a4b473a9d..1232fe6d3 100644
--- a/dnssec/src/binary.h
+++ b/dnssec/src/binary.h
@@ -3,7 +3,16 @@
 #include <stdint.h>
 #include <stdlib.h>
 
+#include "shared.h"
+
+#define _cleanup_binary_ _cleanup_(dnssec_binary_free)
+
 typedef struct dnssec_binary {
 	uint8_t *data;
 	size_t size;
 } dnssec_binary_t;
+
+int dnssec_binary_from_base64(dnssec_binary_t *binary, const uint8_t *base64,
+			      size_t base64_size);
+
+void dnssec_binary_free(dnssec_binary_t *binary);
diff --git a/dnssec/src/error.h b/dnssec/src/error.h
index 7ac29f91f..bbcaf023d 100644
--- a/dnssec/src/error.h
+++ b/dnssec/src/error.h
@@ -1,9 +1,26 @@
 #pragma once
 
+#include <errno.h>
+
+#define errno2error(errno) (-(100 + (errno)))
+
 enum dnssec_error {
 	DNSSEC_EOK = 0,
 
-	DNSSEC_EINVAL = -1,
+	/* Directly mapped error codes. */
+	DNSSEC_ENOMEM = errno2error(ENOMEM),
+	DNSSEC_EINVAL = errno2error(EINVAL),
+//	DNSSEC_ENOTSUP = errno2error(ENOTSUP),
+//	DNSSEC_EBUSY = errno2error(EBUSY),
+//	DNSSEC_EAGAIN = errno2error(EAGAIN),
+//	DNSSEC_EACCES = errno2error(EACCES),
+//	DNSSEC_ECONNREFUSED = errno2error(ECONNREFUSED),
+//	DNSSEC_EISCONN = errno2error(EISCONN),
+//	DNSSEC_EADDRINUSE = errno2error(EADDRINUSE),
+//	DNSSEC_ENOENT = errno2error(ENOENT),
+//	DNSSEC_ERANGE = errno2error(ERANGE),
 
 	DNSSEC_ERROR = -1000,
 };
+
+#undef errno2error
diff --git a/dnssec/src/key.c b/dnssec/src/key.c
index e69de29bb..8d583ec30 100644
--- a/dnssec/src/key.c
+++ b/dnssec/src/key.c
@@ -0,0 +1,121 @@
+#include <string.h>
+#include <gnutls/abstract.h>
+
+#include "key.h"
+#include "error.h"
+
+typedef uint8_t dnssec_key_id_t[20];
+
+struct dnssec_key {
+	dnssec_key_id_t id;
+	uint16_t keytag;
+
+	struct {
+		uint16_t flags;
+		uint8_t algorithm;
+		dnssec_binary_t public_key;
+	} rdata;
+
+	gnutls_pubkey_t public_key;
+	gnutls_privkey_t private_key;
+};
+
+int dnssec_key_new(dnssec_key_t **key_ptr)
+{
+	if (!key_ptr) {
+		return DNSSEC_EINVAL;
+	}
+
+	dnssec_key_t *key = malloc(sizeof(dnssec_key_t));
+	if (!key) {
+		return DNSSEC_ENOMEM;
+	}
+
+	memset(key, 0, sizeof(dnssec_key_t));
+	*key_ptr = key;
+
+	return DNSSEC_EOK;
+}
+
+void dnssec_key_free(dnssec_key_t **key_ptr)
+{
+	if (!key_ptr || !*key_ptr) {
+		return;
+	}
+
+	dnssec_key_t *key = *key_ptr;
+
+	dnssec_binary_free(&key->rdata.public_key);
+	gnutls_privkey_deinit(key->private_key);
+	gnutls_pubkey_deinit(key->public_key);
+
+	free(key);
+	*key_ptr = NULL;
+}
+
+int dnssec_key_from_rsa_params(dnssec_key_t *key,
+			       dnssec_key_algorithm_t algorithm,
+			       const dnssec_binary_t *modulus,
+			       const dnssec_binary_t *public_exponent,
+			       const dnssec_binary_t *private_exponent,
+			       const dnssec_binary_t *first_prime,
+			       const dnssec_binary_t *second_prime,
+			       const dnssec_binary_t *coefficient)
+{
+//	int result;
+//	gnutls_x509_privkey_import_rsa_raw(key, m, e, d, p, q, u);
+
+	return DNSSEC_ERROR;
+}
+
+int dnssec_key_from_dsa_params(dnssec_key_t *key,
+			       dnssec_key_algorithm_t algorithm,
+			       const dnssec_binary_t *p,
+			       const dnssec_binary_t *q,
+			       const dnssec_binary_t *g,
+			       const dnssec_binary_t *y,
+			       const dnssec_binary_t *x)
+{
+//	gnutls_x509_privkey_import_dsa_raw()
+	return DNSSEC_ERROR;
+}
+
+int dnssec_key_from_ecdsa_params(dnssec_key_t *key,
+                                 dnssec_key_algorithm_t algorithm,
+			         const dnssec_binary_t *x_coordinate,
+			         const dnssec_binary_t *y_coordinate,
+			         const dnssec_binary_t *private_key)
+{
+//	gnutls_x509_privkey_import_ecc_raw()
+	return DNSSEC_ERROR;
+}
+
+int dnssec_key_from_params(dnssec_key_t *key, uint16_t flags, uint8_t protocol,
+			   uint8_t algorithm, const dnssec_binary_t *public_key)
+{
+	return DNSSEC_ERROR;
+}
+
+int dnssec_key_from_dnskey(dnssec_key_t *key, const dnssec_binary_t *rdata)
+{
+	if (!key || !rdata) {
+		return DNSSEC_EINVAL;
+	}
+
+	return DNSSEC_ERROR;
+}
+
+int dnssec_key_get_dnskey(const dnssec_key_t *key, dnssec_binary_t *rdata)
+{
+	if (!key || !rdata) {
+		return DNSSEC_EINVAL;
+	}
+
+	return DNSSEC_ERROR;
+}
+
+int dnssec_key_get_ds(const dnssec_key_t *key, dnssec_key_digest_t digest,
+		      dnssec_binary_t *rdata)
+{
+	return DNSSEC_ERROR;
+}
diff --git a/dnssec/src/key.h b/dnssec/src/key.h
index f91b4d747..cd2d02630 100644
--- a/dnssec/src/key.h
+++ b/dnssec/src/key.h
@@ -1,39 +1,76 @@
 #pragma once
 
+#include <gnutls/abstract.h>
 #include <stdint.h>
 #include "binary.h"
+#include "shared.h"
 
-enum dnssec_dnskey_algorithm {
-	DNSKEY_ALGORITHM_INVALID = 0,
+typedef enum dnssec_key_algorithm {
+	DNSSEC_KEY_ALGORITHM_INVALID = 0,
+	DNSSEC_KEY_ALGORITHM_DSA_SHA1 = 3,
+	DNSSEC_KEY_ALGORITHM_RSA_SHA1 = 5,
+	DNSSEC_KEY_ALGORITHM_DSA_SHA1_NSEC3 = 6,
+	DNSSEC_KEY_ALGORITHM_RSA_SHA1_NSEC3 = 7,
+	DNSSEC_KEY_ALGORITHM_RSA_SHA256 = 8,
+	DNSSEC_KEY_ALGORITHM_RSA_SHA512 = 10,
+	DNSSEC_KEY_ALGORITHM_ECDSA_P256_SHA256 = 13,
+	DNSSEC_KEY_ALGORITHM_ECDSA_P384_SHA384 = 14,
+} dnssec_key_algorithm_t;
 
-	DNSKEY_ALGORITHM_DSA_SHA1 = 3,
-	DNSKEY_ALGORITHM_RSA_SHA1 = 5,
-	DNSKEY_ALGORITHM_DSA_SHA1_NSEC3 = 6,
-	DNSKEY_ALGORITHM_RSA_SHA1_NSEC3 = 7,
-	DNSKEY_ALGORITHM_RSA_SHA256 = 8,
-	DNSKEY_ALGORITHM_RSA_SHA512 = 10,
-	DNSKEY_ALGORITHM_ECDSA_P256_SHA256 = 13,
-	DNSKEY_ALGORITHM_ECDSA_P384_SHA384 = 14
-};
+typedef enum dnssec_key_digest {
+	DNSSEC_KEY_DIGEST_INVALID = 0,
+	DNSSEC_KEY_DIGEST_SHA1 = 1,
+	DNSSEC_KEY_DIGEST_SHA256 = 2,
+	DNSSEC_KEY_DIGEST_SHA384 = 4,
+} dnssec_key_digest_t;
 
-typedef uint8_t dnssec_key_id_t[20];
+struct dnssec_key;
+typedef struct dnssec_key dnssec_key_t;
 
-typedef struct dnssec_key {
-	dnssec_key_id_t id;
-	uint16_t keytag;
+#define _cleanup_key_ _cleanup_(dnssec_key_free)
 
-	struct {
-		uint16_t flags;
-		uint8_t algorithm;
-		dnssec_binary_t *public_key;
-	} dnskey_rdata;
+int dnssec_key_new(dnssec_key_t **key);
+void dnssec_key_free(dnssec_key_t **key);
 
-	void *public_key;
-	void *private_key;
-} dnssec_key_t;
+// LEGACY API
 
-int dnssec_key_to_dnskey(const dnssec_key_t *key, dnssec_binary_t *dnskey);
-int dnssec_dnskey_to_key(const dnssec_binary_t *dnskey, dnssec_key_t *key);
+int dnssec_key_from_rsa_params(dnssec_key_t *key,
+			       dnssec_key_algorithm_t algorithm,
+			       const dnssec_binary_t *modulus,
+			       const dnssec_binary_t *public_exponent,
+			       const dnssec_binary_t *private_exponent,
+			       const dnssec_binary_t *first_prime,
+			       const dnssec_binary_t *second_prime,
+			       const dnssec_binary_t *coefficient);
 
-uint8_t dnssec_key_get_algorithm(const dnssec_key_t *key);
-uint16_t dnssec_key_get_keytag(const dnssec_key_t *key);
+int dnssec_key_from_dsa_params(dnssec_key_t *key,
+			       dnssec_key_algorithm_t algorithm,
+			       const dnssec_binary_t *p,
+			       const dnssec_binary_t *q,
+			       const dnssec_binary_t *g,
+			       const dnssec_binary_t *y,
+			       const dnssec_binary_t *x);
+
+int dnssec_key_from_ecdsa_params(dnssec_key_t *key,
+                                 dnssec_key_algorithm_t algorithm,
+			         const dnssec_binary_t *x_coordinate,
+			         const dnssec_binary_t *y_coordinate,
+			         const dnssec_binary_t *private_key);
+
+// TODO: PKCS 8
+
+// TODO: PKCS 11
+
+// FORMAT CONVERSION
+
+int dnssec_key_from_params(dnssec_key_t *key, uint16_t flags, uint8_t protocol,
+			   uint8_t algorithm, const dnssec_binary_t *public_key);
+
+int dnssec_key_from_dnskey(dnssec_key_t *key, const dnssec_binary_t *rdata);
+
+int dnssec_key_get_dnskey(const dnssec_key_t *key, dnssec_binary_t *rdata);
+
+int dnssec_key_get_ds(const dnssec_key_t *key, dnssec_key_digest_t digest,
+		      dnssec_binary_t *rdata);
+
+// HASH FUNCTIONS
diff --git a/dnssec/src/keys/crypto.h b/dnssec/src/keys/crypto.h
new file mode 100644
index 000000000..fda4509b1
--- /dev/null
+++ b/dnssec/src/keys/crypto.h
@@ -0,0 +1,6 @@
+#pragma once
+
+#include <gnutls/abstract.h>
+
+typedef gnutls_pubkey_t  public_key_t;
+typedef gnutls_privkey_t private_key_t;
diff --git a/dnssec/src/keys/legacy.h b/dnssec/src/keys/legacy.h
new file mode 100644
index 000000000..3f59c932d
--- /dev/null
+++ b/dnssec/src/keys/legacy.h
@@ -0,0 +1,2 @@
+#pragma once
+
diff --git a/dnssec/src/keystore.c b/dnssec/src/keystore.c
index 325cd0e8f..2849ce280 100644
--- a/dnssec/src/keystore.c
+++ b/dnssec/src/keystore.c
@@ -1,6 +1,8 @@
 #include "error.h"
 #include "keystore.h"
 
+#if 0
+
 dnssec_keystore_t *dnssec_keystore_open(const char *path);
 
 int dnssec_keystore_close(dnssec_keystore_t **keystore)
@@ -11,3 +13,5 @@ int dnssec_keystore_close(dnssec_keystore_t **keystore)
 
 	return DNSSEC_EOK;
 }
+
+#endif
diff --git a/dnssec/src/shared.h b/dnssec/src/shared.h
new file mode 100644
index 000000000..5fd9c74c1
--- /dev/null
+++ b/dnssec/src/shared.h
@@ -0,0 +1,8 @@
+#pragma once
+
+#define _unused_ __attribute__((unused))
+#define _cleanup_(var) __attribute__((cleanup(var)))
+#define _destructor_ __attribute__((destructor))
+
+#define _public_ __attribute__((visibility("default")))
+#define _hidden_ __attribute__((visibility("hidden")))
diff --git a/dnssec/src/sign.c b/dnssec/src/sign.c
new file mode 100644
index 000000000..f5f1a9106
--- /dev/null
+++ b/dnssec/src/sign.c
@@ -0,0 +1,62 @@
+#include <assert.h>
+#include <stdlib.h>
+#include <string.h>
+#include <gnutls/gnutls.h>
+#include <gnutls/crypto.h>
+
+#include "error.h"
+#include "key.h"
+#include "sign.h"
+
+struct dnssec_sign_ctx {
+	const dnssec_key_t *key;
+	const gnutls_hash_hd_t *digest;
+
+	int a[10];
+};
+
+dnssec_sign_ctx_t *dnssec_sign_new(dnssec_key_t *key)
+{
+	if (!key) {
+		return NULL;
+	}
+
+	dnssec_sign_ctx_t *result = malloc(sizeof(*result));
+	assert(sizeof(*result) == sizeof(dnssec_sign_ctx_t));
+	memset(result, 0, sizeof(*result));
+
+	result->key = key;
+
+
+	return result;
+}
+
+void dnssec_sign_free(dnssec_sign_ctx_t *ctx)
+{
+	free(ctx);
+}
+
+int dnssec_sign_init(dnssec_sign_ctx_t *ctx)
+{
+	return DNSSEC_ERROR;
+}
+
+int dnssec_sign_add(dnssec_sign_ctx_t *ctx, uint8_t *data, size_t size)
+{
+	return DNSSEC_ERROR;
+}
+
+size_t dnssec_sign_size(dnssec_sign_ctx_t *ctx)
+{
+	return 0;
+}
+
+int dnssec_sign_write(dnssec_sign_ctx_t *ctx, uint8_t *data, size_t size)
+{
+	return DNSSEC_ERROR;
+}
+
+int dnssec_sign_verify(dnssec_sign_ctx_t *ctx, uint8_t *data, size_t size)
+{
+	return DNSSEC_ERROR;
+}
diff --git a/dnssec/src/sign.h b/dnssec/src/sign.h
new file mode 100644
index 000000000..224bcaf68
--- /dev/null
+++ b/dnssec/src/sign.h
@@ -0,0 +1,15 @@
+#pragma once
+
+#include <stdint.h>
+
+struct dnssec_sign_ctx;
+typedef struct dnssec_sign_ctx dnssec_sign_ctx_t;
+
+dnssec_sign_ctx_t *dnssec_sign_new(dnssec_key_t *key);
+void dnssec_sign_free(dnssec_sign_ctx_t *ctx);
+
+int dnssec_sign_init(dnssec_sign_ctx_t *ctx);
+int dnssec_sign_add(dnssec_sign_ctx_t *ctx, uint8_t *data, size_t size);
+size_t dnssec_sign_size(dnssec_sign_ctx_t *ctx);
+int dnssec_sign_write(dnssec_sign_ctx_t *ctx, uint8_t *data, size_t size);
+int dnssec_sign_verify(dnssec_sign_ctx_t *ctx, uint8_t *data, size_t size);
diff --git a/dnssec/tests/.gitignore b/dnssec/tests/.gitignore
new file mode 100644
index 000000000..65ffebd95
--- /dev/null
+++ b/dnssec/tests/.gitignore
@@ -0,0 +1,7 @@
+/Makefile
+/Makefile.in
+
+# test binaries
+binary
+key
+sign
diff --git a/dnssec/tests/Makefile.am b/dnssec/tests/Makefile.am
index 1e441cf0a..ffc5747d9 100644
--- a/dnssec/tests/Makefile.am
+++ b/dnssec/tests/Makefile.am
@@ -1,8 +1,11 @@
-AM_CPPFLAGS = -I$(top_srcdir)/libtap
-LDADD = $(top_builddir)/libtap/libtap.a
+AM_CPPFLAGS = -I$(top_srcdir)/libtap -I../src
+LDADD = $(top_builddir)/libtap/libtap.a \
+	../libdnssec.la
 
 check_PROGRAMS = \
-	key
+	binary		\
+	key		\
+	sign
 
 check-compile-only: $(check_PROGRAMS)
 
diff --git a/dnssec/tests/binary.c b/dnssec/tests/binary.c
new file mode 100644
index 000000000..96945b005
--- /dev/null
+++ b/dnssec/tests/binary.c
@@ -0,0 +1,43 @@
+#include <tap/basic.h>
+#include <string.h>
+
+#include "binary.h"
+#include "error.h"
+
+typedef struct test_string {
+	const char *encoded;
+	size_t encoded_size;
+	const char *decoded;
+	size_t decoded_size;
+} test_string_t;
+
+int main(void)
+{
+	plan_lazy();
+
+	test_string_t data[] = {
+		{ "YQ==",     4, "a",      1 },
+		{ "YWI=",     4, "ab",     2 },
+		{ "YWJj",     4, "abc",    3 },
+		{ "YWJjZA==", 8, "abcd",   4 },
+		{ "YWJjZGU=", 8, "abcde",  5 },
+		{ "YWJjZGVm", 8, "abcdef", 6 },
+		{ NULL }
+	};
+
+	for (int i = 0; data[i].encoded != NULL; i++) {
+		test_string_t *ts = &data[i];
+		dnssec_binary_t _cleanup_binary_ binary = { 0 };
+		int r = dnssec_binary_from_base64(&binary,
+						 (const uint8_t *)ts->encoded,
+						 ts->encoded_size);
+
+		ok(r == DNSSEC_EOK, "[%d] conversion performed", i);
+
+		ok(binary.size == ts->decoded_size &&
+		   memcmp(binary.data, ts->decoded, binary.size) == 0,
+		   "[%d] conversion is correct", i);
+	}
+
+	return 0;
+}
diff --git a/dnssec/tests/key.c b/dnssec/tests/key.c
index 106ed4e82..609d0b8fe 100644
--- a/dnssec/tests/key.c
+++ b/dnssec/tests/key.c
@@ -1,10 +1,22 @@
-#include <config.h>
 #include <tap/basic.h>
 
-int main(int argc, char *argv[])
+#include <binary.h>
+#include <key.h>
+
+static int legacy_main(void)
+{
+	dnssec_key_t _cleanup_key_ *rsa_key = NULL;
+	dnssec_key_t _cleanup_key_ *dsa_key = NULL;
+	dnssec_key_t _cleanup_key_ *ecdsa_key = NULL;
+}
+
+int main(void)
 {
 	plan_lazy();
 
-	ok(1, "foo");
+	legacy_main();
+
+	ok(0, "err");
+
 	return 0;
 }
diff --git a/dnssec/tests/sign.c b/dnssec/tests/sign.c
new file mode 100644
index 000000000..810d5457a
--- /dev/null
+++ b/dnssec/tests/sign.c
@@ -0,0 +1,10 @@
+#include <tap/basic.h>
+
+int main(void)
+{
+	plan_lazy();
+
+	ok(1, "sign");
+
+	return 0;
+}