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diff --git a/include/oox/crypto/Standard2007Engine.hxx b/include/oox/crypto/Standard2007Engine.hxx
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ */
+
+#ifndef INCLUDED_OOX_CRYPTO_STANDARD2007ENGINE_HXX
+#define INCLUDED_OOX_CRYPTO_STANDARD2007ENGINE_HXX
+
+#include <oox/dllapi.h>
+#include <oox/crypto/CryptoEngine.hxx>
+#include <filter/msfilter/mscodec.hxx>
+#include <rtl/ustring.hxx>
+#include <sal/types.h>
+
+namespace oox {
+ class BinaryXInputStream;
+ class BinaryXOutputStream;
+}
+
+namespace oox::crypto {
+
+class OOX_DLLPUBLIC Standard2007Engine final : public CryptoEngine
+{
+ msfilter::StandardEncryptionInfo mInfo;
+
+ bool generateVerifier();
+ bool calculateEncryptionKey(std::u16string_view rPassword);
+
+public:
+ Standard2007Engine() = default;
+
+ bool readEncryptionInfo(css::uno::Reference<css::io::XInputStream> & rxInputStream) override;
+
+ virtual bool generateEncryptionKey(OUString const & rPassword) override;
+
+ virtual bool decrypt(
+ BinaryXInputStream& aInputStream,
+ BinaryXOutputStream& aOutputStream) override;
+
+ bool checkDataIntegrity() override;
+
+ void encrypt(const css::uno::Reference<css::io::XInputStream>& rxInputStream,
+ css::uno::Reference<css::io::XOutputStream>& rxOutputStream,
+ sal_uInt32 nSize) override;
+
+ virtual void writeEncryptionInfo(BinaryXOutputStream& rStream) override;
+
+ virtual bool setupEncryption(OUString const & rPassword) override;
+
+};
+
+} // namespace oox::crypto
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */