107 lines
4.2 KiB
C++
107 lines
4.2 KiB
C++
/*
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* Copyright 2014 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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#ifndef SYSTEM_KEYMASTER_ECDSA_OPERATION_H_
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#define SYSTEM_KEYMASTER_ECDSA_OPERATION_H_
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#include <openssl/ec.h>
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#include <openssl/evp.h>
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#include <keymaster/UniquePtr.h>
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#include "operation.h"
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namespace keymaster {
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class EcdsaOperation : public Operation {
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public:
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EcdsaOperation(keymaster_purpose_t purpose, keymaster_digest_t digest, EVP_PKEY* key)
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: Operation(purpose), digest_(digest), ecdsa_key_(key) {
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EVP_MD_CTX_init(&digest_ctx_);
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}
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~EcdsaOperation();
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keymaster_error_t Abort() override { return KM_ERROR_OK; }
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protected:
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keymaster_error_t StoreData(const Buffer& input, size_t* input_consumed);
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keymaster_error_t InitDigest();
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keymaster_digest_t digest_;
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const EVP_MD* digest_algorithm_;
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EVP_PKEY* ecdsa_key_;
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EVP_MD_CTX digest_ctx_;
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Buffer data_;
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};
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class EcdsaSignOperation : public EcdsaOperation {
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public:
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EcdsaSignOperation(keymaster_digest_t digest, EVP_PKEY* key)
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: EcdsaOperation(KM_PURPOSE_SIGN, digest, key) {}
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keymaster_error_t Begin(const AuthorizationSet& input_params,
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AuthorizationSet* output_params) override;
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keymaster_error_t Update(const AuthorizationSet& additional_params, const Buffer& input,
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AuthorizationSet* output_params, Buffer* output,
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size_t* input_consumed) override;
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keymaster_error_t Finish(const AuthorizationSet& additional_params, const Buffer& input,
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const Buffer& signature, AuthorizationSet* output_params,
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Buffer* output) override;
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};
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class EcdsaVerifyOperation : public EcdsaOperation {
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public:
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EcdsaVerifyOperation(keymaster_digest_t digest, EVP_PKEY* key)
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: EcdsaOperation(KM_PURPOSE_VERIFY, digest, key) {}
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keymaster_error_t Begin(const AuthorizationSet& input_params,
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AuthorizationSet* output_params) override;
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keymaster_error_t Update(const AuthorizationSet& additional_params, const Buffer& input,
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AuthorizationSet* output_params, Buffer* output,
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size_t* input_consumed) override;
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keymaster_error_t Finish(const AuthorizationSet& additional_params, const Buffer& input,
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const Buffer& signature, AuthorizationSet* output_params,
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Buffer* output) override;
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};
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class EcdsaOperationFactory : public OperationFactory {
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private:
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KeyType registry_key() const override { return KeyType(KM_ALGORITHM_EC, purpose()); }
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Operation* CreateOperation(const Key& key, const AuthorizationSet& begin_params,
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keymaster_error_t* error) override;
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const keymaster_digest_t* SupportedDigests(size_t* digest_count) const override;
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virtual keymaster_purpose_t purpose() const = 0;
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virtual Operation* InstantiateOperation(keymaster_digest_t digest, EVP_PKEY* key) = 0;
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};
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class EcdsaSignOperationFactory : public EcdsaOperationFactory {
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private:
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keymaster_purpose_t purpose() const override { return KM_PURPOSE_SIGN; }
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Operation* InstantiateOperation(keymaster_digest_t digest, EVP_PKEY* key) override {
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return new (std::nothrow) EcdsaSignOperation(digest, key);
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}
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};
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class EcdsaVerifyOperationFactory : public EcdsaOperationFactory {
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public:
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keymaster_purpose_t purpose() const override { return KM_PURPOSE_VERIFY; }
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Operation* InstantiateOperation(keymaster_digest_t digest, EVP_PKEY* key) override {
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return new (std::nothrow) EcdsaVerifyOperation(digest, key);
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}
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};
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} // namespace keymaster
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#endif // SYSTEM_KEYMASTER_ECDSA_OPERATION_H_
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