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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_STANDARD_CRYPTO_HANDLER_H_ | |
8 #define CORE_FPDFAPI_FPDF_PARSER_CPDF_STANDARD_CRYPTO_HANDLER_H_ | |
9 | |
10 #include "core/fpdfapi/fpdf_parser/ipdf_crypto_handler.h" | |
11 | |
12 class CPDF_StandardCryptoHandler : public IPDF_CryptoHandler { | |
13 public: | |
14 CPDF_StandardCryptoHandler(); | |
15 ~CPDF_StandardCryptoHandler() override; | |
16 | |
17 // IPDF_CryptoHandler | |
18 FX_BOOL Init(CPDF_Dictionary* pEncryptDict, | |
19 IPDF_SecurityHandler* pSecurityHandler) override; | |
20 uint32_t DecryptGetSize(uint32_t src_size) override; | |
21 void* DecryptStart(uint32_t objnum, uint32_t gennum) override; | |
22 FX_BOOL DecryptStream(void* context, | |
23 const uint8_t* src_buf, | |
24 uint32_t src_size, | |
25 CFX_BinaryBuf& dest_buf) override; | |
26 FX_BOOL DecryptFinish(void* context, CFX_BinaryBuf& dest_buf) override; | |
27 uint32_t EncryptGetSize(uint32_t objnum, | |
28 uint32_t version, | |
29 const uint8_t* src_buf, | |
30 uint32_t src_size) override; | |
31 FX_BOOL EncryptContent(uint32_t objnum, | |
32 uint32_t version, | |
33 const uint8_t* src_buf, | |
34 uint32_t src_size, | |
35 uint8_t* dest_buf, | |
36 uint32_t& dest_size) override; | |
37 | |
38 FX_BOOL Init(int cipher, const uint8_t* key, int keylen); | |
39 | |
40 protected: | |
41 virtual void CryptBlock(FX_BOOL bEncrypt, | |
42 uint32_t objnum, | |
43 uint32_t gennum, | |
44 const uint8_t* src_buf, | |
45 uint32_t src_size, | |
46 uint8_t* dest_buf, | |
47 uint32_t& dest_size); | |
48 virtual void* CryptStart(uint32_t objnum, uint32_t gennum, FX_BOOL bEncrypt); | |
49 virtual FX_BOOL CryptStream(void* context, | |
50 const uint8_t* src_buf, | |
51 uint32_t src_size, | |
52 CFX_BinaryBuf& dest_buf, | |
53 FX_BOOL bEncrypt); | |
54 virtual FX_BOOL CryptFinish(void* context, | |
55 CFX_BinaryBuf& dest_buf, | |
56 FX_BOOL bEncrypt); | |
57 | |
58 uint8_t m_EncryptKey[32]; | |
59 int m_KeyLen; | |
60 int m_Cipher; | |
61 uint8_t* m_pAESContext; | |
62 }; | |
63 | |
64 #endif // CORE_FPDFAPI_FPDF_PARSER_CPDF_STANDARD_CRYPTO_HANDLER_H_ | |
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