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/*
* Copyright (c) 2023 Project CHIP Authors
* All rights reserved.
*
* 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 <crypto/CHIPCryptoPALPSA.h>
#include <crypto/OperationalKeystore.h>
namespace chip {
namespace Crypto {
class PSAOperationalKeystore final : public OperationalKeystore
{
public:
bool HasPendingOpKeypair() const override;
bool HasOpKeypairForFabric(FabricIndex fabricIndex) const override;
CHIP_ERROR NewOpKeypairForFabric(FabricIndex fabricIndex, MutableByteSpan & outCertificateSigningRequest) override;
CHIP_ERROR ActivateOpKeypairForFabric(FabricIndex fabricIndex, const Crypto::P256PublicKey & nocPublicKey) override;
CHIP_ERROR CommitOpKeypairForFabric(FabricIndex fabricIndex) override;
CHIP_ERROR RemoveOpKeypairForFabric(FabricIndex fabricIndex) override;
void RevertPendingKeypair() override;
CHIP_ERROR SignWithOpKeypair(FabricIndex fabricIndex, const ByteSpan & message,
Crypto::P256ECDSASignature & outSignature) const override;
Crypto::P256Keypair * AllocateEphemeralKeypairForCASE() override;
void ReleaseEphemeralKeypair(Crypto::P256Keypair * keypair) override;
protected:
class PersistentP256Keypair : private P256Keypair
{
public:
explicit PersistentP256Keypair(FabricIndex fabricIndex);
~PersistentP256Keypair() override;
using P256Keypair::ECDSA_sign_msg;
using P256Keypair::NewCertificateSigningRequest;
using P256Keypair::Pubkey;
psa_key_id_t GetKeyId() const;
bool Exists() const;
CHIP_ERROR Generate();
CHIP_ERROR Destroy();
};
void ReleasePendingKeypair();
PersistentP256Keypair * mPendingKeypair = nullptr;
FabricIndex mPendingFabricIndex = kUndefinedFabricIndex;
bool mIsPendingKeypairActive = false;
};
} // namespace Crypto
} // namespace chip