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/*
* 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.
*/
#pragma once
#include <openssl/rsa.h>
#include <keymaster/km_openssl/rsa_key.h>
#include <keymaster/km_openssl/rsa_key_factory.h>
#include <keymaster/operation.h>
#include "keymaster1_engine.h"
namespace keymaster {
/**
* RsaKeymaster1KeyFactory is a KeyFactory that creates and loads keys which are actually backed by
* a hardware keymaster1 module, but which does not support all keymaster1 digests. If unsupported
* digests are found during generation or import, KM_DIGEST_NONE is added to the key description,
* then the operations handle the unsupported digests in software.
*
* If unsupported digests are requested and KM_PAD_RSA_PSS or KM_PAD_RSA_OAEP is also requested, but
* KM_PAD_NONE is not present KM_PAD_NONE will be added to the description, to allow for
* software padding as well as software digesting.
*/
class RsaKeymaster1KeyFactory : public RsaKeyFactory {
public:
RsaKeymaster1KeyFactory(const SoftwareKeyBlobMaker& blob_maker, const KeymasterContext& context,
const Keymaster1Engine* engine);
keymaster_error_t GenerateKey(const AuthorizationSet& key_description,
UniquePtr<Key> attest_key, //
const KeymasterBlob& issuer_subject, //
KeymasterKeyBlob* key_blob,
AuthorizationSet* hw_enforced, //
AuthorizationSet* sw_enforced,
CertificateChain* cert_chain) const override;
keymaster_error_t ImportKey(const AuthorizationSet& key_description,
keymaster_key_format_t input_key_material_format,
const KeymasterKeyBlob& input_key_material,
UniquePtr<Key> attest_key, //
const KeymasterBlob& issuer_subject,
KeymasterKeyBlob* output_key_blob,
AuthorizationSet* hw_enforced, //
AuthorizationSet* sw_enforced,
CertificateChain* cert_chain) const override;
keymaster_error_t LoadKey(KeymasterKeyBlob&& key_material,
const AuthorizationSet& additional_params,
AuthorizationSet&& hw_enforced, AuthorizationSet&& sw_enforced,
UniquePtr<Key>* key) const override;
OperationFactory* GetOperationFactory(keymaster_purpose_t purpose) const override;
private:
const Keymaster1Engine* engine_;
std::unique_ptr<OperationFactory> sign_factory_;
std::unique_ptr<OperationFactory> decrypt_factory_;
std::unique_ptr<OperationFactory> verify_factory_;
std::unique_ptr<OperationFactory> encrypt_factory_;
};
class RsaKeymaster1Key : public RsaKey {
public:
RsaKeymaster1Key(RSA* rsa_key, AuthorizationSet&& hw_enforced, AuthorizationSet&& sw_enforced,
const KeyFactory* key_factory)
: RsaKey(rsa_key, move(hw_enforced), move(sw_enforced), key_factory) {}
};
} // namespace keymaster
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