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/* 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;
}
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