blob: b70032d9b9142ddb1974685486dce277af8e263a [file] [log] [blame]
// Copyright 2017 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "peridot/bin/ledger/encryption/primitives/kdf.h"
#include <lib/fxl/logging.h>
#include <openssl/digest.h>
#include <openssl/hkdf.h>
namespace encryption {
std::string HMAC256KDF(fxl::StringView data, size_t length) {
std::string output;
int result = HKDF(reinterpret_cast<uint8_t*>(&output[0]), output.size(),
EVP_sha256(), reinterpret_cast<const uint8_t*>(,
data.size(), nullptr, 0u, nullptr, 0u);
FXL_CHECK(result == 1);
return output;
} // namespace encryption