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| 1 // Copyright 2016 PDFium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
| 6 |
| 7 #ifndef CORE_FPDFAPI_FPDF_PARSER_CPDF_CRYPTO_HANDLER_H_ |
| 8 #define CORE_FPDFAPI_FPDF_PARSER_CPDF_CRYPTO_HANDLER_H_ |
| 9 |
| 10 #include "core/fxcrt/include/fx_basic.h" |
| 11 #include "core/fxcrt/include/fx_string.h" |
| 12 #include "core/fxcrt/include/fx_system.h" |
| 13 |
| 14 class CPDF_Dictionary; |
| 15 class CPDF_SecurityHandler; |
| 16 |
| 17 class CPDF_CryptoHandler { |
| 18 public: |
| 19 CPDF_CryptoHandler(); |
| 20 ~CPDF_CryptoHandler(); |
| 21 |
| 22 FX_BOOL Init(CPDF_Dictionary* pEncryptDict, |
| 23 CPDF_SecurityHandler* pSecurityHandler); |
| 24 uint32_t DecryptGetSize(uint32_t src_size); |
| 25 void* DecryptStart(uint32_t objnum, uint32_t gennum); |
| 26 void Decrypt(uint32_t objnum, uint32_t gennum, CFX_ByteString& str); |
| 27 FX_BOOL DecryptStream(void* context, |
| 28 const uint8_t* src_buf, |
| 29 uint32_t src_size, |
| 30 CFX_BinaryBuf& dest_buf); |
| 31 FX_BOOL DecryptFinish(void* context, CFX_BinaryBuf& dest_buf); |
| 32 uint32_t EncryptGetSize(uint32_t objnum, |
| 33 uint32_t version, |
| 34 const uint8_t* src_buf, |
| 35 uint32_t src_size); |
| 36 FX_BOOL EncryptContent(uint32_t objnum, |
| 37 uint32_t version, |
| 38 const uint8_t* src_buf, |
| 39 uint32_t src_size, |
| 40 uint8_t* dest_buf, |
| 41 uint32_t& dest_size); |
| 42 |
| 43 FX_BOOL Init(int cipher, const uint8_t* key, int keylen); |
| 44 |
| 45 protected: |
| 46 void CryptBlock(FX_BOOL bEncrypt, |
| 47 uint32_t objnum, |
| 48 uint32_t gennum, |
| 49 const uint8_t* src_buf, |
| 50 uint32_t src_size, |
| 51 uint8_t* dest_buf, |
| 52 uint32_t& dest_size); |
| 53 void* CryptStart(uint32_t objnum, uint32_t gennum, FX_BOOL bEncrypt); |
| 54 FX_BOOL CryptStream(void* context, |
| 55 const uint8_t* src_buf, |
| 56 uint32_t src_size, |
| 57 CFX_BinaryBuf& dest_buf, |
| 58 FX_BOOL bEncrypt); |
| 59 FX_BOOL CryptFinish(void* context, CFX_BinaryBuf& dest_buf, FX_BOOL bEncrypt); |
| 60 |
| 61 uint8_t m_EncryptKey[32]; |
| 62 int m_KeyLen; |
| 63 int m_Cipher; |
| 64 uint8_t* m_pAESContext; |
| 65 }; |
| 66 |
| 67 #endif // CORE_FPDFAPI_FPDF_PARSER_CPDF_CRYPTO_HANDLER_H_ |
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