blob: 01f9156f7445931c1b51d1e98d9af79c1cf794fb [file] [log] [blame]
/*
* Copyright (c) 2024 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.
*
*/
#include "ToTLVCert.h"
#include <credentials/CHIPCert.h>
#include <lib/support/Base64.h>
#include <string>
constexpr char kBase64Header[] = "base64:";
constexpr size_t kBase64HeaderLen = ArraySize(kBase64Header) - 1;
CHIP_ERROR ToBase64(const chip::ByteSpan & input, std::string & outputAsPrefixedBase64)
{
chip::Platform::ScopedMemoryBuffer<char> base64String;
base64String.Alloc(kBase64HeaderLen + BASE64_ENCODED_LEN(input.size()) + 1);
VerifyOrReturnError(base64String.Get() != nullptr, CHIP_ERROR_NO_MEMORY);
auto encodedLen = chip::Base64Encode(input.data(), static_cast<uint16_t>(input.size()), base64String.Get() + kBase64HeaderLen);
if (encodedLen)
{
memcpy(base64String.Get(), kBase64Header, kBase64HeaderLen);
encodedLen = static_cast<uint16_t>(encodedLen + kBase64HeaderLen);
}
base64String.Get()[encodedLen] = '\0';
outputAsPrefixedBase64 = std::string(base64String.Get(), encodedLen);
return CHIP_NO_ERROR;
}
CHIP_ERROR ToTLVCert(const chip::ByteSpan & derEncodedCertificate, std::string & tlvCertAsPrefixedBase64)
{
uint8_t chipCertBuffer[chip::Credentials::kMaxCHIPCertLength];
chip::MutableByteSpan chipCertBytes(chipCertBuffer);
ReturnErrorOnFailure(chip::Credentials::ConvertX509CertToChipCert(derEncodedCertificate, chipCertBytes));
ReturnErrorOnFailure(ToBase64(chipCertBytes, tlvCertAsPrefixedBase64));
return CHIP_NO_ERROR;
}