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// Copyright 2014 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
#ifndef XFA_FXFA_CXFA_CHECKSUMCONTEXT_H_
#define XFA_FXFA_CXFA_CHECKSUMCONTEXT_H_
#include <memory>
#include "core/fdrm/crypto/fx_crypt.h"
#include "xfa/fde/xml/cfx_saxreader.h"
class CXFA_ChecksumContext {
public:
CXFA_ChecksumContext();
~CXFA_ChecksumContext();
void StartChecksum();
void Update(const CFX_ByteStringC& bsText);
bool UpdateChecksum(const CFX_RetainPtr<IFX_SeekableReadStream>& pSrcFile,
FX_FILESIZE offset = 0,
size_t size = 0);
void FinishChecksum();
CFX_ByteString GetChecksum() const;
private:
std::unique_ptr<CFX_SAXReader> m_pSAXReader;
std::unique_ptr<CRYPT_sha1_context> m_pByteContext;
CFX_ByteString m_bsChecksum;
};
#endif // XFA_FXFA_CXFA_CHECKSUMCONTEXT_H_
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