upload android base code part6

android/system/keymaster/ecdsa_keymaster1_operation.h

@@ -0,0 +1,128 @@
+/*
+ * 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_ECDSA_KEYMASTER1_OPERATION_H_
+#define SYSTEM_KEYMASTER_ECDSA_KEYMASTER1_OPERATION_H_
+
+#include <openssl/evp.h>
+
+#include <hardware/keymaster1.h>
+#include <keymaster/android_keymaster_utils.h>
+
+#include "ecdsa_operation.h"
+#include "keymaster1_engine.h"
+
+namespace keymaster {
+
+class EcdsaKeymaster1WrappedOperation {
+  public:
+    EcdsaKeymaster1WrappedOperation(keymaster_purpose_t purpose, const Keymaster1Engine* engine)
+        : purpose_(purpose), operation_handle_(0), engine_(engine) {}
+    ~EcdsaKeymaster1WrappedOperation() {
+        if (operation_handle_)
+            Abort();
+    }
+
+    keymaster_error_t Begin(EVP_PKEY* ecdsa_key, const AuthorizationSet& input_params);
+    keymaster_error_t PrepareFinish(EVP_PKEY* ecdsa_key, const AuthorizationSet& input_params);
+    void Finish() { operation_handle_ = 0; }
+    keymaster_error_t Abort();
+
+    keymaster_error_t GetError(EVP_PKEY* ecdsa_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 EcdsaKeymaster1Operation : public BaseOperation {
+    typedef BaseOperation super;
+
+  public:
+    EcdsaKeymaster1Operation(keymaster_digest_t digest, EVP_PKEY* key,
+                             const Keymaster1Engine* engine)
+        : BaseOperation(digest, 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::ecdsa_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::ecdsa_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::ecdsa_key_) != KM_ERROR_OK)
+            error = wrapped_operation_.GetError(super::ecdsa_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:
+    EcdsaKeymaster1WrappedOperation wrapped_operation_;
+};
+
+/**
+ * Factory that produces EcdsaKeymaster1Operations.  This is instantiated and
+ * provided by EcdsaKeymaster1KeyFactory.
+ */
+class EcdsaKeymaster1OperationFactory : public OperationFactory {
+  public:
+    EcdsaKeymaster1OperationFactory(keymaster_purpose_t purpose, const Keymaster1Engine* engine)
+        : purpose_(purpose), engine_(engine) {}
+    KeyType registry_key() const override { return KeyType(KM_ALGORITHM_EC, 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_ECDSA_KEYMASTER1_OPERATION_H_