Split off IPDF_SecurityHandler and CPDF_StandardSecurityHandler.

core/src/fpdfapi/fpdf_parser/cpdf_standard_security_handler.h

Index: core/src/fpdfapi/fpdf_parser/cpdf_standard_security_handler.h
diff --git a/core/src/fpdfapi/fpdf_parser/cpdf_standard_security_handler.h b/core/src/fpdfapi/fpdf_parser/cpdf_standard_security_handler.h
new file mode 100644
index 0000000000000000000000000000000000000000..27aeaa8bc024a874deaef1262b916afb4fe5f886
--- /dev/null
+++ b/core/src/fpdfapi/fpdf_parser/cpdf_standard_security_handler.h
@@ -0,0 +1,105 @@
+// 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_SRC_FPDFAPI_FPDF_PARSER_CPDF_STANDARD_SECURITY_HANDLER_H_
+#define CORE_SRC_FPDFAPI_FPDF_PARSER_CPDF_STANDARD_SECURITY_HANDLER_H_
+
+#include "core/include/fpdfapi/ipdf_security_handler.h"
+#include "core/include/fxcrt/fx_string.h"
+#include "core/include/fxcrt/fx_system.h"
+
+class CPDF_Array;
+
+#define PDF_ENCRYPT_CONTENT 0
+
+class CPDF_StandardSecurityHandler : public IPDF_SecurityHandler {
+ public:
+  CPDF_StandardSecurityHandler();
+  ~CPDF_StandardSecurityHandler() override;
+
+  // IPDF_SecurityHandler:
+  FX_BOOL OnInit(CPDF_Parser* pParser, CPDF_Dictionary* pEncryptDict) override;
+  FX_DWORD GetPermissions() override;
+  FX_BOOL GetCryptInfo(int& cipher,
+                       const uint8_t*& buffer,
+                       int& keylen) override;
+  FX_BOOL IsMetadataEncrypted() override;
+  CPDF_CryptoHandler* CreateCryptoHandler() override;
+
+  void OnCreate(CPDF_Dictionary* pEncryptDict,
+                CPDF_Array* pIdArray,
+                const uint8_t* user_pass,
+                FX_DWORD user_size,
+                const uint8_t* owner_pass,
+                FX_DWORD owner_size,
+                FX_DWORD type = PDF_ENCRYPT_CONTENT);
+
+  void OnCreate(CPDF_Dictionary* pEncryptDict,
+                CPDF_Array* pIdArray,
+                const uint8_t* user_pass,
+                FX_DWORD user_size,
+                FX_DWORD type = PDF_ENCRYPT_CONTENT);
+
+  CFX_ByteString GetUserPassword(const uint8_t* owner_pass,
+                                 FX_DWORD pass_size,
+                                 int32_t key_len);
+  int CheckPassword(const uint8_t* password,
+                    FX_DWORD pass_size,
+                    FX_BOOL bOwner,
+                    uint8_t* key,
+                    int key_len);
+
+ private:
+  FX_BOOL LoadDict(CPDF_Dictionary* pEncryptDict);
+  FX_BOOL LoadDict(CPDF_Dictionary* pEncryptDict,
+                   FX_DWORD type,
+                   int& cipher,
+                   int& key_len);
+
+  FX_BOOL CheckUserPassword(const uint8_t* password,
+                            FX_DWORD pass_size,
+                            FX_BOOL bIgnoreEncryptMeta,
+                            uint8_t* key,
+                            int32_t key_len);
+
+  FX_BOOL CheckOwnerPassword(const uint8_t* password,
+                             FX_DWORD pass_size,
+                             uint8_t* key,
+                             int32_t key_len);
+  FX_BOOL AES256_CheckPassword(const uint8_t* password,
+                               FX_DWORD size,
+                               FX_BOOL bOwner,
+                               uint8_t* key);
+  void AES256_SetPassword(CPDF_Dictionary* pEncryptDict,
+                          const uint8_t* password,
+                          FX_DWORD size,
+                          FX_BOOL bOwner,
+                          const uint8_t* key);
+  void AES256_SetPerms(CPDF_Dictionary* pEncryptDict,
+                       FX_DWORD permission,
+                       FX_BOOL bEncryptMetadata,
+                       const uint8_t* key);
+  void OnCreate(CPDF_Dictionary* pEncryptDict,
+                CPDF_Array* pIdArray,
+                const uint8_t* user_pass,
+                FX_DWORD user_size,
+                const uint8_t* owner_pass,
+                FX_DWORD owner_size,
+                FX_BOOL bDefault,
+                FX_DWORD type);
+  FX_BOOL CheckSecurity(int32_t key_len);
+
+  int m_Version;
+  int m_Revision;
+  CPDF_Parser* m_pParser;
+  CPDF_Dictionary* m_pEncryptDict;
+  FX_DWORD m_Permissions;
+  int m_Cipher;
+  uint8_t m_EncryptKey[32];
+  int m_KeyLen;
+};
+
+#endif  // CORE_SRC_FPDFAPI_FPDF_PARSER_CPDF_STANDARD_SECURITY_HANDLER_H_