isc_result_t
dst_key_buildinternal(dns_name_t *name, unsigned int alg,
unsigned int bits, unsigned int flags,
unsigned int protocol, dns_rdataclass_t rdclass,
void *data, isc_mem_t *mctx, dst_key_t **keyp)
{
dst_key_t *key;
isc_result_t result;
REQUIRE(dst_initialized == ISC_TRUE);
REQUIRE(dns_name_isabsolute(name));
REQUIRE(mctx != NULL);
REQUIRE(keyp != NULL && *keyp == NULL);
REQUIRE(data != NULL);
CHECKALG(alg);
key = get_key_struct(name, alg, flags, protocol, bits, rdclass,
0, mctx);
if (key == NULL)
return (ISC_R_NOMEMORY);
key->keydata.generic = data;
result = computeid(key);
if (result != ISC_R_SUCCESS) {
dst_key_free(&key);
return (result);
}
*keyp = key;
return (ISC_R_SUCCESS);
}
isc_result_t
dst_key_todns(const dst_key_t *key, isc_buffer_t *target) {
REQUIRE(dst_initialized == ISC_TRUE);
REQUIRE(VALID_KEY(key));
REQUIRE(target != NULL);
CHECKALG(key->key_alg);
if (key->func->todns == NULL)
return (DST_R_UNSUPPORTEDALG);
if (isc_buffer_availablelength(target) < 4)
return (ISC_R_NOSPACE);
isc_buffer_putuint16(target, (isc_uint16_t)(key->key_flags & 0xffff));
isc_buffer_putuint8(target, (isc_uint8_t)key->key_proto);
isc_buffer_putuint8(target, (isc_uint8_t)key->key_alg);
if (key->key_flags & DNS_KEYFLAG_EXTENDED) {
if (isc_buffer_availablelength(target) < 2)
return (ISC_R_NOSPACE);
isc_buffer_putuint16(target,
(isc_uint16_t)((key->key_flags >> 16)
& 0xffff));
}
if (key->keydata.generic == NULL) /*%< NULL KEY */
return (ISC_R_SUCCESS);
return (key->func->todns(key, target));
}
isc_result_t
dst_key_getfilename(dns_name_t *name, dns_keytag_t id,
unsigned int alg, int type, const char *directory,
isc_mem_t *mctx, isc_buffer_t *buf)
{
isc_result_t result;
REQUIRE(dst_initialized == ISC_TRUE);
REQUIRE(dns_name_isabsolute(name));
REQUIRE((type & (DST_TYPE_PRIVATE | DST_TYPE_PUBLIC)) != 0);
REQUIRE(mctx != NULL);
REQUIRE(buf != NULL);
CHECKALG(alg);
result = buildfilename(name, id, alg, type, directory, buf);
if (result == ISC_R_SUCCESS) {
if (isc_buffer_availablelength(buf) > 0)
isc_buffer_putuint8(buf, 0);
else
result = ISC_R_NOSPACE;
}
return (result);
}
isc_result_t
dst_key_tofile(const dst_key_t *key, int type, const char *directory) {
isc_result_t ret = ISC_R_SUCCESS;
REQUIRE(dst_initialized == ISC_TRUE);
REQUIRE(VALID_KEY(key));
REQUIRE((type & (DST_TYPE_PRIVATE | DST_TYPE_PUBLIC)) != 0);
CHECKALG(key->key_alg);
if (key->func->tofile == NULL)
return (DST_R_UNSUPPORTEDALG);
if (type & DST_TYPE_PUBLIC) {
ret = write_public_key(key, type, directory);
if (ret != ISC_R_SUCCESS)
return (ret);
}
if ((type & DST_TYPE_PRIVATE) &&
(key->key_flags & DNS_KEYFLAG_TYPEMASK) != DNS_KEYTYPE_NOKEY)
return (key->func->tofile(key, directory));
else
return (ISC_R_SUCCESS);
}
isc_result_t
dst_key_tobuffer(const dst_key_t *key, isc_buffer_t *target) {
REQUIRE(dst_initialized == ISC_TRUE);
REQUIRE(VALID_KEY(key));
REQUIRE(target != NULL);
CHECKALG(key->key_alg);
if (key->func->todns == NULL)
return (DST_R_UNSUPPORTEDALG);
return (key->func->todns(key, target));
}
isc_result_t
dst_context_verify(dst_context_t *dctx, isc_region_t *sig) {
REQUIRE(VALID_CTX(dctx));
REQUIRE(sig != NULL);
CHECKALG(dctx->key->key_alg);
if (dctx->key->keydata.generic == NULL)
return (DST_R_NULLKEY);
if (dctx->key->func->verify == NULL)
return (DST_R_NOTPUBLICKEY);
return (dctx->key->func->verify(dctx, sig));
}
isc_result_t
dst_key_generate2(dns_name_t *name, unsigned int alg,
unsigned int bits, unsigned int param,
unsigned int flags, unsigned int protocol,
dns_rdataclass_t rdclass,
isc_mem_t *mctx, dst_key_t **keyp,
void (*callback)(int))
{
dst_key_t *key;
isc_result_t ret;
REQUIRE(dst_initialized == ISC_TRUE);
REQUIRE(dns_name_isabsolute(name));
REQUIRE(mctx != NULL);
REQUIRE(keyp != NULL && *keyp == NULL);
CHECKALG(alg);
key = get_key_struct(name, alg, flags, protocol, bits,
rdclass, 0, mctx);
if (key == NULL)
return (ISC_R_NOMEMORY);
if (bits == 0) { /*%< NULL KEY */
key->key_flags |= DNS_KEYTYPE_NOKEY;
*keyp = key;
return (ISC_R_SUCCESS);
}
if (key->func->generate == NULL) {
dst_key_free(&key);
return (DST_R_UNSUPPORTEDALG);
}
ret = key->func->generate(key, param, callback);
if (ret != ISC_R_SUCCESS) {
dst_key_free(&key);
return (ret);
}
ret = computeid(key);
if (ret != ISC_R_SUCCESS) {
dst_key_free(&key);
return (ret);
}
*keyp = key;
return (ISC_R_SUCCESS);
}
isc_result_t
dst_key_computesecret(const dst_key_t *pub, const dst_key_t *priv,
isc_buffer_t *secret)
{
REQUIRE(dst_initialized == ISC_TRUE);
REQUIRE(VALID_KEY(pub) && VALID_KEY(priv));
REQUIRE(secret != NULL);
CHECKALG(pub->key_alg);
CHECKALG(priv->key_alg);
if (pub->keydata.generic == NULL || priv->keydata.generic == NULL)
return (DST_R_NULLKEY);
if (pub->key_alg != priv->key_alg ||
pub->func->computesecret == NULL ||
priv->func->computesecret == NULL)
return (DST_R_KEYCANNOTCOMPUTESECRET);
if (dst_key_isprivate(priv) == ISC_FALSE)
return (DST_R_NOTPRIVATEKEY);
return (pub->func->computesecret(pub, priv, secret));
}
isc_result_t
dst_key_fromfile(dns_name_t *name, dns_keytag_t id,
unsigned int alg, int type, const char *directory,
isc_mem_t *mctx, dst_key_t **keyp)
{
isc_result_t result;
char filename[ISC_DIR_NAMEMAX];
isc_buffer_t buf;
dst_key_t *key;
REQUIRE(dst_initialized == ISC_TRUE);
REQUIRE(dns_name_isabsolute(name));
REQUIRE((type & (DST_TYPE_PRIVATE | DST_TYPE_PUBLIC)) != 0);
REQUIRE(mctx != NULL);
REQUIRE(keyp != NULL && *keyp == NULL);
CHECKALG(alg);
key = NULL;
isc_buffer_init(&buf, filename, ISC_DIR_NAMEMAX);
result = dst_key_getfilename(name, id, alg, type, NULL, mctx, &buf);
if (result != ISC_R_SUCCESS)
goto out;
result = dst_key_fromnamedfile(filename, directory, type, mctx, &key);
if (result != ISC_R_SUCCESS)
goto out;
result = computeid(key);
if (result != ISC_R_SUCCESS)
goto out;
if (!dns_name_equal(name, key->key_name) || id != key->key_id ||
alg != key->key_alg) {
result = DST_R_INVALIDPRIVATEKEY;
goto out;
}
*keyp = key;
result = ISC_R_SUCCESS;
out:
if ((key != NULL) && (result != ISC_R_SUCCESS))
dst_key_free(&key);
return (result);
}
isc_result_t
dst_key_fromfile(dns_name_t *name, dns_keytag_t id,
unsigned int alg, int type, const char *directory,
isc_mem_t *mctx, dst_key_t **keyp)
{
char filename[ISC_DIR_NAMEMAX];
isc_buffer_t b;
dst_key_t *key;
isc_result_t result;
REQUIRE(dst_initialized == ISC_TRUE);
REQUIRE(dns_name_isabsolute(name));
REQUIRE((type & (DST_TYPE_PRIVATE | DST_TYPE_PUBLIC)) != 0);
REQUIRE(mctx != NULL);
REQUIRE(keyp != NULL && *keyp == NULL);
CHECKALG(alg);
isc_buffer_init(&b, filename, sizeof(filename));
result = buildfilename(name, id, alg, type, directory, &b);
if (result != ISC_R_SUCCESS)
return (result);
key = NULL;
result = dst_key_fromnamedfile(filename, type, mctx, &key);
if (result != ISC_R_SUCCESS)
return (result);
result = computeid(key);
if (result != ISC_R_SUCCESS) {
dst_key_free(&key);
return (result);
}
if (!dns_name_equal(name, key->key_name) ||
id != key->key_id ||
alg != key->key_alg)
{
dst_key_free(&key);
return (DST_R_INVALIDPRIVATEKEY);
}
key->key_id = id;
*keyp = key;
return (ISC_R_SUCCESS);
}
isc_result_t
dst_context_sign(dst_context_t *dctx, isc_buffer_t *sig) {
dst_key_t *key;
REQUIRE(VALID_CTX(dctx));
REQUIRE(sig != NULL);
key = dctx->key;
CHECKALG(key->key_alg);
if (key->opaque == NULL)
return (DST_R_NULLKEY);
if (key->func->sign == NULL)
return (DST_R_NOTPRIVATEKEY);
if (key->func->isprivate == NULL ||
key->func->isprivate(key) == ISC_FALSE)
return (DST_R_NOTPRIVATEKEY);
return (key->func->sign(dctx, sig));
}
isc_result_t
dst_key_fromlabel(dns_name_t *name, int alg, unsigned int flags,
unsigned int protocol, dns_rdataclass_t rdclass,
const char *engine, const char *label, const char *pin,
isc_mem_t *mctx, dst_key_t **keyp)
{
dst_key_t *key;
isc_result_t result;
REQUIRE(dst_initialized == ISC_TRUE);
REQUIRE(dns_name_isabsolute(name));
REQUIRE(mctx != NULL);
REQUIRE(keyp != NULL && *keyp == NULL);
REQUIRE(label != NULL);
CHECKALG(alg);
key = get_key_struct(name, alg, flags, protocol, 0, rdclass, 0, mctx);
if (key == NULL)
return (ISC_R_NOMEMORY);
if (key->func->fromlabel == NULL) {
dst_key_free(&key);
return (DST_R_UNSUPPORTEDALG);
}
result = key->func->fromlabel(key, engine, label, pin);
if (result != ISC_R_SUCCESS) {
dst_key_free(&key);
return (result);
}
result = computeid(key);
if (result != ISC_R_SUCCESS) {
dst_key_free(&key);
return (result);
}
*keyp = key;
return (ISC_R_SUCCESS);
}
