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/**
*
* Copyright (c) 2021 Project CHIP Authors
*
* 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/CHIPCryptoPAL.h"
#include "lib/core/CHIPError.h"
#include "lib/support/JniReferences.h"
#include "lib/support/logging/CHIPLogging.h"
#include <jni.h>
/**
* Bridging implementation of P256Keypair to allow delegation of signing and
* key generation to the JVM layer (through the KeypairDelegate Java interface).
*
* This implementation explicitly does not support serialization or
* deserialization and will always return CHIP_ERROR_UNSUPPORTED_CHIP_FEATURE if
* either of them are invoked (as this bridge is not expected to ever have
* access to the raw key bits).
*/
class CHIPP256KeypairBridge : public chip::Crypto::P256Keypair
{
public:
~CHIPP256KeypairBridge() override;
/**
* Sets a reference to the Java implementation of the KeypairDelegate
* interface that will be called whenever this P256Keypair is used.
*/
CHIP_ERROR SetDelegate(jobject delegate);
bool HasKeypair() const { return mDelegate.HasValidObjectRef(); }
CHIP_ERROR Initialize(chip::Crypto::ECPKeyTarget key_target) override;
CHIP_ERROR Serialize(chip::Crypto::P256SerializedKeypair & output) const override;
CHIP_ERROR Deserialize(chip::Crypto::P256SerializedKeypair & input) override;
CHIP_ERROR NewCertificateSigningRequest(uint8_t * csr, size_t & csr_length) const override;
CHIP_ERROR ECDSA_sign_msg(const uint8_t * msg, size_t msg_length,
chip::Crypto::P256ECDSASignature & out_signature) const override;
CHIP_ERROR ECDH_derive_secret(const chip::Crypto::P256PublicKey & remote_public_key,
chip::Crypto::P256ECDHDerivedSecret & out_secret) const override;
const chip::Crypto::P256PublicKey & Pubkey() const override { return mPublicKey; };
private:
chip::JniGlobalReference mDelegate;
chip::JniGlobalReference mKeypairDelegateClass;
jmethodID mGetPublicKeyMethod;
jmethodID mCreateCertificateSigningRequestMethod;
jmethodID mEcdsaSignMessageMethod;
chip::Crypto::P256PublicKey mPublicKey;
CHIP_ERROR SetPubkey();
};