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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_WEBCRYPTO_CRYPTO_DATA_H_
#define COMPONENTS_WEBCRYPTO_CRYPTO_DATA_H_
#include <string>
#include <vector>
#include "third_party/blink/public/platform/web_vector.h"
namespace webcrypto {
// Helper to pass around a range of immutable bytes. This is conceptually
// similar to base::StringPiece, but for crypto byte data.
//
// The data used at construction is NOT owned, and should remain valid as long
// as the CryptoData is being used.
class CryptoData {
public:
// Constructs empty data.
CryptoData();
CryptoData(const unsigned char* bytes, unsigned int byte_length);
// These constructors do NOT copy the data. Hence the base pointer should
// remain valid for the lifetime of CryptoData.
explicit CryptoData(const std::vector<unsigned char>& bytes);
explicit CryptoData(const std::string& bytes);
explicit CryptoData(const blink::WebVector<unsigned char>& bytes);
const unsigned char* bytes() const { return bytes_; }
unsigned int byte_length() const { return byte_length_; }
private:
const unsigned char* const bytes_;
const unsigned int byte_length_;
};
} // namespace webcrypto
#endif // COMPONENTS_WEBCRYPTO_CRYPTO_DATA_H_
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