| /* |
| * Copyright 2015 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. |
| */ |
| |
| #ifndef SYSTEM_KEYMASTER_RSA_KEYMASTER1_OPERATION_H_ |
| #define SYSTEM_KEYMASTER_RSA_KEYMASTER1_OPERATION_H_ |
| |
| #include <openssl/evp.h> |
| |
| #include <hardware/keymaster1.h> |
| #include <keymaster/android_keymaster_utils.h> |
| |
| #include "keymaster1_engine.h" |
| #include "rsa_operation.h" |
| |
| namespace keymaster { |
| |
| class RsaKeymaster1WrappedOperation { |
| public: |
| RsaKeymaster1WrappedOperation(keymaster_purpose_t purpose, const Keymaster1Engine* engine) |
| : purpose_(purpose), operation_handle_(0), engine_(engine) {} |
| ~RsaKeymaster1WrappedOperation() { |
| if (operation_handle_) |
| Abort(); |
| } |
| |
| keymaster_error_t Begin(EVP_PKEY* rsa_key, const AuthorizationSet& input_params); |
| keymaster_error_t PrepareFinish(EVP_PKEY* rsa_key, const AuthorizationSet& input_params); |
| void Finish() { operation_handle_ = 0; } |
| keymaster_error_t Abort(); |
| |
| keymaster_error_t GetError(EVP_PKEY* rsa_key); |
| |
| keymaster_operation_handle_t GetOperationHandle() const { return operation_handle_; } |
| |
| private: |
| keymaster_purpose_t purpose_; |
| keymaster_operation_handle_t operation_handle_; |
| const Keymaster1Engine* engine_; |
| }; |
| |
| template <typename BaseOperation> class RsaKeymaster1Operation : public BaseOperation { |
| typedef BaseOperation super; |
| |
| public: |
| RsaKeymaster1Operation(keymaster_digest_t digest, keymaster_padding_t padding, EVP_PKEY* key, |
| const Keymaster1Engine* engine) |
| : BaseOperation(digest, padding, key), wrapped_operation_(super::purpose(), engine) { |
| // Shouldn't be instantiated for public key operations. |
| assert(super::purpose() != KM_PURPOSE_VERIFY); |
| assert(super::purpose() != KM_PURPOSE_ENCRYPT); |
| } |
| |
| keymaster_error_t Begin(const AuthorizationSet& input_params, |
| AuthorizationSet* output_params) override { |
| keymaster_error_t error = wrapped_operation_.Begin(super::rsa_key_, input_params); |
| if (error != KM_ERROR_OK) |
| return error; |
| return super::Begin(input_params, output_params); |
| } |
| |
| keymaster_error_t Finish(const AuthorizationSet& input_params, const Buffer& input, |
| const Buffer& signature, AuthorizationSet* output_params, |
| Buffer* output) override { |
| keymaster_error_t error = wrapped_operation_.PrepareFinish(super::rsa_key_, input_params); |
| if (error != KM_ERROR_OK) |
| return error; |
| error = super::Finish(input_params, input, signature, output_params, output); |
| if (wrapped_operation_.GetError(super::rsa_key_) != KM_ERROR_OK) |
| error = wrapped_operation_.GetError(super::rsa_key_); |
| if (error == KM_ERROR_OK) |
| wrapped_operation_.Finish(); |
| return error; |
| } |
| |
| keymaster_error_t Abort() override { |
| keymaster_error_t error = wrapped_operation_.Abort(); |
| if (error != KM_ERROR_OK) |
| return error; |
| return super::Abort(); |
| } |
| |
| keymaster_error_t CreateOperationHandle(const KeymasterContext& /* context */, |
| keymaster_operation_handle_t* op_handle) override { |
| *op_handle = wrapped_operation_.GetOperationHandle(); |
| return KM_ERROR_OK; |
| } |
| |
| private: |
| RsaKeymaster1WrappedOperation wrapped_operation_; |
| }; |
| |
| /** |
| * Factory that produces RsaKeymaster1Operations. This is instantiated and |
| * provided by RsaKeymaster1KeyFactory. |
| */ |
| class RsaKeymaster1OperationFactory : public OperationFactory { |
| public: |
| RsaKeymaster1OperationFactory(keymaster_purpose_t purpose, const Keymaster1Engine* engine) |
| : purpose_(purpose), engine_(engine) {} |
| KeyType registry_key() const override { return KeyType(KM_ALGORITHM_RSA, purpose_); } |
| |
| Operation* CreateOperation(const Key& key, const AuthorizationSet& begin_params, |
| keymaster_error_t* error) override; |
| |
| const keymaster_digest_t* SupportedDigests(size_t* digest_count) const override; |
| const keymaster_padding_t* SupportedPaddingModes(size_t* padding_mode_count) const override; |
| |
| private: |
| keymaster_purpose_t purpose_; |
| const Keymaster1Engine* engine_; |
| }; |
| |
| } // namespace keymaster |
| |
| #endif // SYSTEM_KEYMASTER_RSA_KEYMASTER1_OPERATION_H_ |