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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_data = {
(void *)
"\xaa\xf4\xc6\x1d\xdc\xc5\xe8\xa2\xda\xbe"
"\xde\x0f\x3b\x48\x2c\xd9\xae\xa9\x43\x4d",
20
};
/* sha1 hash of "hello" string */
const gnutls_datum_t sha256_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 invalid_hash_data = {
(void *)
"\xaa\xf4\xc6\x1d\xdc\xca\xe8\xa2\xda\xbe"
"\xde\x0f\x3b\x48\x2c\xb9\xae\xa9\x43\x4d",
20
};
const gnutls_datum_t raw_data = {
(void *)"hello",
5
};
static void print_keys(gnutls_privkey_t privkey, gnutls_pubkey_t pubkey)
{
gnutls_x509_privkey_t xkey;
gnutls_datum_t out;
int ret = gnutls_privkey_export_x509(privkey, &xkey);
if (ret < 0)
fail("error in privkey export\n");
ret = gnutls_x509_privkey_export2(xkey, GNUTLS_X509_FMT_PEM, &out);
if (ret < 0)
fail("error in privkey export\n");
fprintf(stderr, "%s\n", out.data);
gnutls_free(out.data);
ret = gnutls_pubkey_export2(pubkey, GNUTLS_X509_FMT_PEM, &out);
if (ret < 0)
fail("error in pubkey export\n");
fprintf(stderr, "%s\n", out.data);
gnutls_free(out.data);
gnutls_x509_privkey_deinit(xkey);
}
#define ERR fail("Failure at: %s (%s-%s) (iter: %d)\n", gnutls_sign_get_name(sign_algo), gnutls_pk_get_name(pk), gnutls_digest_get_name(hash), j);
static
void test_sig(gnutls_pk_algorithm_t pk, unsigned hash, unsigned bits)
{
gnutls_pubkey_t pubkey;
gnutls_privkey_t privkey;
gnutls_sign_algorithm_t sign_algo;
gnutls_datum_t signature;
const gnutls_datum_t *hash_data;
int ret;
unsigned j;
unsigned vflags = 0;
if (hash == GNUTLS_DIG_SHA1) {
hash_data = &sha1_data;
vflags |= GNUTLS_VERIFY_ALLOW_SIGN_WITH_SHA1;
} else if (hash == GNUTLS_DIG_SHA256)
hash_data = &sha256_data;
else
abort();
sign_algo =
gnutls_pk_to_sign(pk, hash);
for (j = 0; j < 100; j++) {
ret = gnutls_pubkey_init(&pubkey);
if (ret < 0)
ERR;
ret = gnutls_privkey_init(&privkey);
if (ret < 0)
ERR;
ret = gnutls_privkey_generate(privkey, pk, bits, 0);
if (ret < 0)
ERR;
ret =
gnutls_privkey_sign_hash(privkey, hash,
0, hash_data,
&signature);
if (ret < 0)
ERR;
ret = gnutls_pubkey_import_privkey(pubkey, privkey, GNUTLS_KEY_DIGITAL_SIGNATURE, 0);
if (ret < 0)
ERR;
ret =
gnutls_pubkey_verify_hash2(pubkey,
sign_algo, vflags,
hash_data, &signature);
if (ret < 0) {
print_keys(privkey, pubkey);
ERR;
}
/* should fail */
ret =
gnutls_pubkey_verify_hash2(pubkey,
sign_algo, vflags,
&invalid_hash_data,
&signature);
if (ret != GNUTLS_E_PK_SIG_VERIFY_FAILED) {
print_keys(privkey, pubkey);
ERR;
}
sign_algo =
gnutls_pk_to_sign(gnutls_pubkey_get_pk_algorithm
(pubkey, NULL), hash);
ret =
gnutls_pubkey_verify_hash2(pubkey, sign_algo, vflags,
hash_data, &signature);
if (ret < 0)
ERR;
/* should fail */
ret =
gnutls_pubkey_verify_hash2(pubkey, sign_algo, vflags,
&invalid_hash_data,
&signature);
if (ret != GNUTLS_E_PK_SIG_VERIFY_FAILED) {
print_keys(privkey, pubkey);
ERR;
}
/* test the raw interface */
gnutls_free(signature.data);
signature.data = NULL;
if (pk == GNUTLS_PK_RSA) {
ret =
gnutls_privkey_sign_hash(privkey,
hash,
GNUTLS_PRIVKEY_SIGN_FLAG_TLS1_RSA,
hash_data,
&signature);
if (ret < 0)
ERR;
sign_algo =
gnutls_pk_to_sign
(gnutls_pubkey_get_pk_algorithm
(pubkey, NULL), hash);
ret =
gnutls_pubkey_verify_hash2(pubkey,
sign_algo,
vflags|GNUTLS_PUBKEY_VERIFY_FLAG_TLS1_RSA,
hash_data,
&signature);
if (ret < 0) {
print_keys(privkey, pubkey);
ERR;
}
}
gnutls_free(signature.data);
gnutls_privkey_deinit(privkey);
gnutls_pubkey_deinit(pubkey);
}
}
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