Source/WebCore/crypto/parameters/CryptoAlgorithmHkdfParams.h

/*
 * Copyright (C) 2017 Apple Inc. All rights reserved.
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 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
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#pragma once

#include "BufferSource.h"
#include "CryptoAlgorithmParameters.h"
#include <JavaScriptCore/JSObject.h>
#include <JavaScriptCore/Strong.h>
#include <wtf/Vector.h>

#if ENABLE(WEB_CRYPTO)

namespace WebCore {

class CryptoAlgorithmHkdfParams final : public CryptoAlgorithmParameters {
public:
    // FIXME: Consider merging hash and hashIdentifier.
    std::variant<JSC::Strong<JSC::JSObject>, String> hash;
    CryptoAlgorithmIdentifier hashIdentifier;
    BufferSource salt;
    BufferSource info;

    const Vector<uint8_t>& saltVector() const
    {
        if (!m_saltVector.isEmpty() || !salt.length())
            return m_saltVector;

        m_saltVector.append(salt.data(), salt.length());
        return m_saltVector;
    }

    const Vector<uint8_t>& infoVector() const
    {
        if (!m_infoVector.isEmpty() || !info.length())
            return m_infoVector;

        m_infoVector.append(info.data(), info.length());
        return m_infoVector;
    }

    Class parametersClass() const final { return Class::HkdfParams; }

    CryptoAlgorithmHkdfParams isolatedCopy() const
    {
        CryptoAlgorithmHkdfParams result;
        result.identifier = identifier;
        result.m_saltVector = saltVector();
        result.m_infoVector = infoVector();
        result.hashIdentifier = hashIdentifier;

        return result;
    }

private:
    mutable Vector<uint8_t> m_saltVector;
    mutable Vector<uint8_t> m_infoVector;
};

} // namespace WebCore

SPECIALIZE_TYPE_TRAITS_CRYPTO_ALGORITHM_PARAMETERS(HkdfParams)

#endif // ENABLE(WEB_CRYPTO)