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/* Copyright (C) 2024 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 <string.h>
#include "binary.h"
#include "crypto.h"
#include "error.h"
#include "key.h"
#include "libdnssec/sample_keys.h"
#define check_attr_scalar(key, type, name, def_val, set_val) { \
type value = dnssec_key_get_##name(key); \
ok(value == def_val, #name " default"); \
r = dnssec_key_set_##name(key, set_val); \
ok(r == DNSSEC_EOK, #name " set"); \
value = dnssec_key_get_##name(key); \
ok(value == set_val, #name " get"); \
}
static void check_key_tag(dnssec_key_t *key, const key_parameters_t *params)
{
uint16_t keytag = dnssec_key_get_keytag(key);
ok(keytag == params->keytag, "get keytag");
}
static void check_key_size(dnssec_key_t *key, const key_parameters_t *params)
{
ok(dnssec_key_get_size(key) == params->bit_size,
"key size %u bits", params->bit_size);
}
static void check_usage(dnssec_key_t *key, bool ok_verify, bool ok_sign)
{
ok(dnssec_key_can_verify(key) == ok_verify,
"%s verify", ok_verify ? "can" : "cannot");
ok(dnssec_key_can_sign(key) == ok_sign,
"%s sign", ok_sign ? "can" : "cannot");
}
static void test_public_key(const key_parameters_t *params)
{
dnssec_key_t *key = NULL;
int r = dnssec_key_new(&key);
ok(r == DNSSEC_EOK && key != NULL, "create key");
// create from parameters
r = dnssec_key_set_pubkey(key, ¶ms->public_key);
ok(r == DNSSEC_INVALID_KEY_ALGORITHM,
"set public key (fails, no algorithm set)");
check_attr_scalar(key, uint16_t, flags, 256, params->flags);
check_attr_scalar(key, uint8_t, protocol, 3, params->protocol);
check_attr_scalar(key, uint8_t, algorithm, 0, params->algorithm);
r = dnssec_key_set_pubkey(key, ¶ms->public_key);
ok(r == DNSSEC_EOK, "set public key (succeeds)");
r = dnssec_key_set_pubkey(key, ¶ms->public_key);
ok(r == DNSSEC_KEY_ALREADY_PRESENT,
"set public key (fails, already present)");
dnssec_binary_t rdata = { 0 };
r = dnssec_key_get_rdata(key, &rdata);
ok(r == DNSSEC_EOK && dnssec_binary_cmp(&rdata, ¶ms->rdata) == 0,
"get RDATA");
check_key_tag(key, params);
// create from RDATA
dnssec_key_clear(key);
r = dnssec_key_set_rdata(key, ¶ms->rdata);
ok(r == DNSSEC_EOK, "set RDATA");
check_key_tag(key, params);
check_key_size(key, params);
check_usage(key, true, false);
// create copy
dnssec_key_t *copy = dnssec_key_dup(key);
ok(copy != NULL, "duplicate key");
check_key_tag(copy, params);
check_key_size(copy, params);
check_usage(copy, true, false);
dnssec_key_free(copy);
dnssec_key_free(key);
}
static void test_private_key(const key_parameters_t *params)
{
dnssec_key_t *key = NULL;
int r = dnssec_key_new(&key);
ok(r == DNSSEC_EOK && key != NULL, "create key");
// import to public
r = dnssec_key_set_rdata(key, ¶ms->rdata);
ok(r == DNSSEC_EOK, "set RDATA");
r = dnssec_key_load_pkcs8(key, ¶ms->pem);
ok(r == DNSSEC_EOK, "load private key (1)");
ok(dnssec_key_can_verify(key), "can verify");
ok(dnssec_key_can_sign(key), "can sign");
// purely from parameters
dnssec_key_clear(key);
dnssec_key_set_algorithm(key, params->algorithm);
dnssec_key_set_flags(key, params->flags);
r = dnssec_key_load_pkcs8(key, ¶ms->pem);
ok(r == DNSSEC_EOK, "load private key (2)");
dnssec_binary_t rdata = { 0 };
r = dnssec_key_get_rdata(key, &rdata);
ok(r == DNSSEC_EOK && dnssec_binary_cmp(&rdata, ¶ms->rdata) == 0,
"get RDATA");
check_key_tag(key, params);
check_key_size(key, params);
check_usage(key, true, true);
// create copy
dnssec_key_t *copy = dnssec_key_dup(key);
ok(copy != NULL, "duplicate key");
check_key_tag(copy, params);
check_key_size(copy, params);
check_usage(copy, true, true);
dnssec_key_free(copy);
dnssec_key_free(key);
}
static void test_naming(void)
{
dnssec_key_t *key = NULL;
dnssec_key_new(&key);
const uint8_t *input = (uint8_t *)"\x07""eXample""\x03""COM";
const uint8_t *expected = (uint8_t *)"\x07""example""\x03""com";
size_t expected_size = 13;
ok(dnssec_key_get_dname(key) == NULL, "implicit key name");
dnssec_key_set_dname(key, input);
const uint8_t *output = dnssec_key_get_dname(key);
ok(strlen((char *)output) + 1 == 13 &&
memcmp(output, expected, expected_size) == 0,
"set key name");
dnssec_key_set_dname(key, NULL);
ok(dnssec_key_get_dname(key) == NULL, "clear key name");
dnssec_key_free(key);
}
typedef struct keyinfo {
const char *name;
const key_parameters_t *parameters;
} keyinfo_t;
int main(void)
{
plan_lazy();
dnssec_crypto_init();
static const keyinfo_t keys[] = {
{ "RSA", &SAMPLE_RSA_KEY },
{ "ECDSA", &SAMPLE_ECDSA_KEY },
#ifdef HAVE_ED25519
{ "ED25519", &SAMPLE_ED25519_KEY },
#endif
#ifdef HAVE_ED448
{ "ED448", &SAMPLE_ED448_KEY },
#endif
{ NULL }
};
for (const keyinfo_t *k = keys; k->name != NULL; k += 1) {
diag("%s key", k->name);
test_public_key(k->parameters);
test_private_key(k->parameters);
}
test_naming();
dnssec_crypto_cleanup();
return 0;
}
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