121 lines
3.7 KiB
C++
121 lines
3.7 KiB
C++
/*
|
|
* Copyright 2014 The Android Open Source Project
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#include <openssl/x509.h>
|
|
|
|
#include <keymaster/key_blob.h>
|
|
|
|
#include "asymmetric_key.h"
|
|
#include "openssl_utils.h"
|
|
|
|
#include "key.h"
|
|
|
|
namespace keymaster {
|
|
|
|
struct PKCS8_PRIV_KEY_INFO_Delete {
|
|
void operator()(PKCS8_PRIV_KEY_INFO* p) const { PKCS8_PRIV_KEY_INFO_free(p); }
|
|
};
|
|
|
|
Key::Key(const KeyBlob& blob, const Logger& logger) : logger_(logger) {
|
|
authorizations_.push_back(blob.unenforced());
|
|
authorizations_.push_back(blob.enforced());
|
|
}
|
|
|
|
/* static */
|
|
Key* Key::CreateKey(const KeyBlob& blob, const Logger& logger, keymaster_error_t* error) {
|
|
switch (blob.algorithm()) {
|
|
case KM_ALGORITHM_RSA:
|
|
return new RsaKey(blob, logger, error);
|
|
case KM_ALGORITHM_DSA:
|
|
return new DsaKey(blob, logger, error);
|
|
case KM_ALGORITHM_ECDSA:
|
|
return new EcdsaKey(blob, logger, error);
|
|
default:
|
|
*error = KM_ERROR_UNSUPPORTED_ALGORITHM;
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
/* static */
|
|
Key* Key::GenerateKey(const AuthorizationSet& key_description, const Logger& logger,
|
|
keymaster_error_t* error) {
|
|
keymaster_algorithm_t algorithm;
|
|
if (!key_description.GetTagValue(TAG_ALGORITHM, &algorithm)) {
|
|
*error = KM_ERROR_UNSUPPORTED_ALGORITHM;
|
|
return NULL;
|
|
}
|
|
|
|
switch (algorithm) {
|
|
case KM_ALGORITHM_RSA:
|
|
return RsaKey::GenerateKey(key_description, logger, error);
|
|
case KM_ALGORITHM_DSA:
|
|
return DsaKey::GenerateKey(key_description, logger, error);
|
|
case KM_ALGORITHM_ECDSA:
|
|
return EcdsaKey::GenerateKey(key_description, logger, error);
|
|
default:
|
|
*error = KM_ERROR_UNSUPPORTED_ALGORITHM;
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
/* static */
|
|
Key* Key::ImportKey(const AuthorizationSet& key_description, keymaster_key_format_t key_format,
|
|
const uint8_t* key_data, size_t key_data_length, const Logger& logger,
|
|
keymaster_error_t* error) {
|
|
*error = KM_ERROR_OK;
|
|
|
|
if (key_data == NULL || key_data_length <= 0) {
|
|
*error = KM_ERROR_INVALID_KEY_BLOB;
|
|
return NULL;
|
|
}
|
|
|
|
if (key_format != KM_KEY_FORMAT_PKCS8) {
|
|
*error = KM_ERROR_UNSUPPORTED_KEY_FORMAT;
|
|
return NULL;
|
|
}
|
|
|
|
UniquePtr<PKCS8_PRIV_KEY_INFO, PKCS8_PRIV_KEY_INFO_Delete> pkcs8(
|
|
d2i_PKCS8_PRIV_KEY_INFO(NULL, &key_data, key_data_length));
|
|
if (pkcs8.get() == NULL) {
|
|
*error = KM_ERROR_MEMORY_ALLOCATION_FAILED;
|
|
return NULL;
|
|
}
|
|
|
|
UniquePtr<EVP_PKEY, EVP_PKEY_Delete> pkey(EVP_PKCS82PKEY(pkcs8.get()));
|
|
if (pkey.get() == NULL) {
|
|
*error = KM_ERROR_INVALID_KEY_BLOB;
|
|
return NULL;
|
|
}
|
|
|
|
UniquePtr<Key> key;
|
|
switch (EVP_PKEY_type(pkey->type)) {
|
|
case EVP_PKEY_RSA:
|
|
return RsaKey::ImportKey(key_description, pkey.get(), logger, error);
|
|
case EVP_PKEY_DSA:
|
|
return DsaKey::ImportKey(key_description, pkey.get(), logger, error);
|
|
case EVP_PKEY_EC:
|
|
return EcdsaKey::ImportKey(key_description, pkey.get(), logger, error);
|
|
default:
|
|
*error = KM_ERROR_UNSUPPORTED_ALGORITHM;
|
|
return NULL;
|
|
}
|
|
|
|
*error = KM_ERROR_UNIMPLEMENTED;
|
|
return NULL;
|
|
}
|
|
|
|
} // namespace keymaster
|