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-rw-r--r--tests/libdnssec/test_sign_der.c203
1 files changed, 203 insertions, 0 deletions
diff --git a/tests/libdnssec/test_sign_der.c b/tests/libdnssec/test_sign_der.c
new file mode 100644
index 0000000..18745a9
--- /dev/null
+++ b/tests/libdnssec/test_sign_der.c
@@ -0,0 +1,203 @@
+/* Copyright (C) 2019 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz>
+
+ This program 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.
+
+ This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <tap/basic.h>
+#include <stdint.h>
+#include <string.h>
+#include <stdbool.h>
+
+#include "bignum.c"
+#include "binary.h"
+#include "error.h"
+#include "sign/der.c"
+
+static int binary_eq(const dnssec_binary_t *a, const dnssec_binary_t *b)
+{
+ return a && b &&
+ a->size == b->size &&
+ memcmp(a->data, b->data, a->size) == 0;
+}
+
+#define DECODE_OK(der, r, s, message) \
+ dnssec_binary_t __der = { .data = der, .size = sizeof(der) }; \
+ dnssec_binary_t __r = { .data = r, .size = sizeof(r) }; \
+ dnssec_binary_t __s = { .data = s, .size = sizeof(s) }; \
+ dnssec_binary_t __out_s = { 0 }; \
+ dnssec_binary_t __out_r = { 0 }; \
+ int _result = dss_sig_value_decode(&__der, &__out_r, &__out_s); \
+ ok(_result == DNSSEC_EOK && \
+ binary_eq(&__r, &__out_r) && \
+ binary_eq(&__s, &__out_s), \
+ "decode ok, " message)
+
+#define DECODE_FAIL(der, message) \
+ dnssec_binary_t __der = { .data = der, .size = sizeof(der) }; \
+ dnssec_binary_t __out_r = { 0 }; \
+ dnssec_binary_t __out_s = { 0 }; \
+ int _result = dss_sig_value_decode(&__der, &__out_r, &__out_s); \
+ ok(_result != DNSSEC_EOK, \
+ "decode fail, " message)
+
+#define ENCODE_OK(r, s, der, message) \
+ dnssec_binary_t __r = { .data = r, .size = sizeof(r) }; \
+ dnssec_binary_t __s = { .data = s, .size = sizeof(s) }; \
+ dnssec_binary_t __der = { .data = der, .size = sizeof(der) }; \
+ dnssec_binary_t __out_der = { 0 }; \
+ int _result = dss_sig_value_encode(&__r, &__s, &__out_der); \
+ ok(_result == DNSSEC_EOK && \
+ binary_eq(&__der, &__out_der), \
+ "encode ok, " message); \
+ dnssec_binary_free(&__out_der)
+
+#define ENCODE_FAIL(r, s, message) \
+ dnssec_binary_t __r = { .data = r, .size = sizeof(r) }; \
+ dnssec_binary_t __s = { .data = s, .size = sizeof(s) }; \
+ dnssec_binary_t __out_der = { 0 }; \
+ int _result = dss_sig_value_encode(&__r, &__s, &__out_der); \
+ ok(_result != DNSSEC_EOK, \
+ "encode fail, " message); \
+ dnssec_binary_free(&__out_der)
+
+#define ONE_64_TIMES \
+ 0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01, \
+ 0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01, \
+ 0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01, \
+ 0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01, \
+ 0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01, \
+ 0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01, \
+ 0x01,0x01,0x01,0x01
+
+#define ONE_128_TIMES \
+ ONE_64_TIMES, ONE_64_TIMES
+
+int main(void)
+{
+ plan_lazy();
+
+ {
+ uint8_t der[] = { 0x30,0x08, 0x02,0x02,0x1a,0x2b, 0x02,0x02,0x3c,0x4d };
+ uint8_t r[] = { 0x1a, 0x2b };
+ uint8_t s[] = { 0x3c, 0x4d };
+ DECODE_OK(der, r, s, "simple without MSB");
+ }
+
+ {
+ uint8_t der[] = { 0x30,0x08, 0x02,0x02,0xff,0xff, 0x02,0x02,0x80,0x00 };
+ uint8_t r[] = { 0xff, 0xff };
+ uint8_t s[] = { 0x80, 0x00 };
+ DECODE_OK(der, r, s, "simple with MSB");
+ }
+
+ {
+ uint8_t der[] = { 0x30,0x09, 0x02,0x04,0x00,0x00,0x00,0xfa, 0x02,0x01,0x07 };
+ uint8_t r[] = { 0xfa };
+ uint8_t s[] = { 0x07 };
+ DECODE_OK(der, r, s, "leading zeros");
+ }
+
+ {
+ uint8_t der[] = { 0x30,0x07, 0x02,0x01,0x00, 0x02,0x02,0x00,0x00 };
+ uint8_t r[] = { 0x00 };
+ uint8_t s[] = { 0x00 };
+ DECODE_OK(der, r, s, "zero values" );
+ }
+
+ {
+ uint8_t der[] = { };
+ DECODE_FAIL(der, "empty input");
+ }
+
+ {
+ uint8_t der[] = { 0x30,0x04, 0x02,0x01,0x01 };
+ DECODE_FAIL(der, "partial sequence");
+ }
+
+ {
+ uint8_t der[] = { 0x30,0x06, 0x02,0x01,0x01, 0x02,0x02,0x01 };
+ DECODE_FAIL(der, "partial integer");
+ }
+
+ {
+ uint8_t der[] = { 0x30,0x00 };
+ DECODE_FAIL(der, "zero-length sequence");
+ }
+
+ {
+ uint8_t der[] = { 0x30,0x05, 0x02,0x01,0xff, 0x02,0x00 };
+ DECODE_FAIL(der, "zero-length integer");
+ }
+
+ {
+ uint8_t der[] = { 0x30,0x84, 0x02,0x40,ONE_64_TIMES, 0x02,0x40,ONE_64_TIMES };
+ DECODE_FAIL(der, "unsupported size");
+ }
+
+ {
+ uint8_t r[] = { 0x01, };
+ uint8_t s[] = { 0x02,0x03 };
+ uint8_t der[] = { 0x30,0x07, 0x02,0x01,0x01, 0x02,0x02,0x02,0x03 };
+ ENCODE_OK(r, s, der, "simple");
+ }
+
+ {
+ uint8_t r[] = { 0x00,0x01, };
+ uint8_t s[] = { 0x00,0x00,0x02,0x03 };
+ uint8_t der[] = { 0x30,0x07, 0x02,0x01,0x01, 0x02,0x02,0x02,0x03 };
+ ENCODE_OK(r, s, der, "unnecessary leading zeros");
+ }
+
+ {
+ uint8_t r[] = { 0x00,0x8f };
+ uint8_t s[] = { 0x00,0x00,0xff };
+ uint8_t der[] = { 0x30,0x08, 0x02,0x02,0x00,0x8f, 0x02,0x02,0x00,0xff };
+ ENCODE_OK(r, s, der, "required zero not removed");
+ }
+
+ {
+ uint8_t r[] = { 0x8c };
+ uint8_t s[] = { 0xff,0xee };
+ uint8_t der[] = { 0x30,0x09, 0x02,0x02,0x00,0x8c, 0x02,0x03,0x00,0xff,0xee };
+ ENCODE_OK(r, s, der, "implicitly added zero");
+ }
+
+ {
+ uint8_t r[] = { 0x00 };
+ uint8_t s[] = { 0x00,0x00 };
+ uint8_t der[] = { 0x30,0x06, 0x02,0x01,0x00, 0x02,0x01,0x00 };
+ ENCODE_OK(r, s, der, "zero");
+ }
+
+ {
+ uint8_t r[] = { 0x01 };
+ uint8_t s[] = { };
+ uint8_t der[] = { 0x30,0x06, 0x02,0x01,0x01, 0x02,0x01,0x00 };
+ ENCODE_OK(r, s, der, "zero-length input");
+ }
+
+ {
+ uint8_t r[] = { ONE_128_TIMES };
+ uint8_t s[] = { 0x01 };
+ ENCODE_FAIL(r, s, "input too long");
+ }
+
+ {
+ uint8_t r[] = { ONE_64_TIMES };
+ uint8_t s[] = { ONE_64_TIMES };
+ ENCODE_FAIL(r, s, "result too long");
+ }
+
+ return 0;
+}