63 lines
2.2 KiB
C++
63 lines
2.2 KiB
C++
/*
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* Copyright 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <keymaster/km_openssl/triple_des_key.h>
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#include <assert.h>
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#include <openssl/err.h>
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#include <openssl/rand.h>
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#include "triple_des_operation.h"
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namespace keymaster {
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static TripleDesOperationFactory encrypt_factory(KM_PURPOSE_ENCRYPT);
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static TripleDesOperationFactory decrypt_factory(KM_PURPOSE_DECRYPT);
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OperationFactory* TripleDesKeyFactory::GetOperationFactory(keymaster_purpose_t purpose) const {
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switch (purpose) {
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case KM_PURPOSE_ENCRYPT:
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return &encrypt_factory;
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case KM_PURPOSE_DECRYPT:
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return &decrypt_factory;
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default:
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return nullptr;
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}
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}
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keymaster_error_t TripleDesKeyFactory::LoadKey(KeymasterKeyBlob&& key_material,
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const AuthorizationSet& /* additional_params */,
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AuthorizationSet&& hw_enforced,
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AuthorizationSet&& sw_enforced,
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UniquePtr<Key>* key) const {
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if (!key) return KM_ERROR_OUTPUT_PARAMETER_NULL;
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keymaster_error_t error = KM_ERROR_OK;
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key->reset(new (std::nothrow)
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TripleDesKey(move(key_material), move(hw_enforced), move(sw_enforced), this));
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if (!key->get()) error = KM_ERROR_MEMORY_ALLOCATION_FAILED;
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return error;
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}
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keymaster_error_t TripleDesKeyFactory::validate_algorithm_specific_new_key_params(
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const AuthorizationSet& key_description) const {
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if (key_description.Contains(TAG_MIN_MAC_LENGTH)) return KM_ERROR_INVALID_TAG;
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return KM_ERROR_OK;
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}
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} // namespace keymaster
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