1 files changed, 67 insertions, 0 deletions
diff --git a/core/fpdfapi/fpdf_parser/cpdf_crypto_handler.h b/core/fpdfapi/fpdf_parser/cpdf_crypto_handler.h
new file mode 100644
index 0000000000..3edc47b7b0
--- /dev/null
+++ b/core/fpdfapi/fpdf_parser/cpdf_crypto_handler.h
@@ -0,0 +1,67 @@
+// Copyright 2016 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 CORE_FPDFAPI_FPDF_PARSER_CPDF_CRYPTO_HANDLER_H_
+#define CORE_FPDFAPI_FPDF_PARSER_CPDF_CRYPTO_HANDLER_H_
+
+#include "core/fxcrt/include/fx_basic.h"
+#include "core/fxcrt/include/fx_string.h"
+#include "core/fxcrt/include/fx_system.h"
+
+class CPDF_Dictionary;
+class CPDF_SecurityHandler;
+
+class CPDF_CryptoHandler {
+ public:
+  CPDF_CryptoHandler();
+  ~CPDF_CryptoHandler();
+
+  FX_BOOL Init(CPDF_Dictionary* pEncryptDict,
+               CPDF_SecurityHandler* pSecurityHandler);
+  uint32_t DecryptGetSize(uint32_t src_size);
+  void* DecryptStart(uint32_t objnum, uint32_t gennum);
+  void Decrypt(uint32_t objnum, uint32_t gennum, CFX_ByteString& str);
+  FX_BOOL DecryptStream(void* context,
+                        const uint8_t* src_buf,
+                        uint32_t src_size,
+                        CFX_BinaryBuf& dest_buf);
+  FX_BOOL DecryptFinish(void* context, CFX_BinaryBuf& dest_buf);
+  uint32_t EncryptGetSize(uint32_t objnum,
+                          uint32_t version,
+                          const uint8_t* src_buf,
+                          uint32_t src_size);
+  FX_BOOL EncryptContent(uint32_t objnum,
+                         uint32_t version,
+                         const uint8_t* src_buf,
+                         uint32_t src_size,
+                         uint8_t* dest_buf,
+                         uint32_t& dest_size);
+
+  FX_BOOL Init(int cipher, const uint8_t* key, int keylen);
+
+ protected:
+  void CryptBlock(FX_BOOL bEncrypt,
+                  uint32_t objnum,
+                  uint32_t gennum,
+                  const uint8_t* src_buf,
+                  uint32_t src_size,
+                  uint8_t* dest_buf,
+                  uint32_t& dest_size);
+  void* CryptStart(uint32_t objnum, uint32_t gennum, FX_BOOL bEncrypt);
+  FX_BOOL CryptStream(void* context,
+                      const uint8_t* src_buf,
+                      uint32_t src_size,
+                      CFX_BinaryBuf& dest_buf,
+                      FX_BOOL bEncrypt);
+  FX_BOOL CryptFinish(void* context, CFX_BinaryBuf& dest_buf, FX_BOOL bEncrypt);
+
+  uint8_t m_EncryptKey[32];
+  int m_KeyLen;
+  int m_Cipher;
+  uint8_t* m_pAESContext;
+};
+
+#endif  // CORE_FPDFAPI_FPDF_PARSER_CPDF_CRYPTO_HANDLER_H_