kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 1 | // Copyright 2014 The PDFium Authors |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 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_FDRM_FX_CRYPT_H_ |
| 8 | #define CORE_FDRM_FX_CRYPT_H_ |
| 9 | |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 10 | #include <stdint.h> |
| 11 | |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 12 | #include "third_party/base/span.h" |
| 13 | |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 14 | struct CRYPT_rc4_context { |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 15 | static constexpr int32_t kPermutationLength = 256; |
| 16 | |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 17 | int32_t x; |
| 18 | int32_t y; |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 19 | int32_t m[kPermutationLength]; |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 20 | }; |
| 21 | |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 22 | struct CRYPT_aes_context { |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 23 | static constexpr int kMaxNb = 8; |
| 24 | static constexpr int kMaxNr = 14; |
| 25 | static constexpr int kSchedSize = (kMaxNr + 1) * kMaxNb; |
| 26 | |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 27 | int Nb; |
| 28 | int Nr; |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 29 | unsigned int keysched[kSchedSize]; |
| 30 | unsigned int invkeysched[kSchedSize]; |
| 31 | unsigned int iv[kMaxNb]; |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 32 | }; |
| 33 | |
| 34 | struct CRYPT_md5_context { |
| 35 | uint32_t total[2]; |
| 36 | uint32_t state[4]; |
| 37 | uint8_t buffer[64]; |
| 38 | }; |
| 39 | |
| 40 | struct CRYPT_sha1_context { |
| 41 | uint64_t total_bytes; |
| 42 | uint32_t blkused; // Constrained to [0, 64). |
| 43 | uint32_t h[5]; |
| 44 | uint8_t block[64]; |
| 45 | }; |
| 46 | |
| 47 | struct CRYPT_sha2_context { |
| 48 | uint64_t total_bytes; |
| 49 | uint64_t state[8]; |
| 50 | uint8_t buffer[128]; |
| 51 | }; |
| 52 | |
| 53 | void CRYPT_ArcFourCryptBlock(pdfium::span<uint8_t> data, |
| 54 | pdfium::span<const uint8_t> key); |
| 55 | void CRYPT_ArcFourSetup(CRYPT_rc4_context* context, |
| 56 | pdfium::span<const uint8_t> key); |
| 57 | void CRYPT_ArcFourCrypt(CRYPT_rc4_context* context, pdfium::span<uint8_t> data); |
| 58 | |
| 59 | void CRYPT_AESSetKey(CRYPT_aes_context* context, |
| 60 | const uint8_t* key, |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 61 | uint32_t keylen); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 62 | void CRYPT_AESSetIV(CRYPT_aes_context* context, const uint8_t* iv); |
| 63 | void CRYPT_AESDecrypt(CRYPT_aes_context* context, |
| 64 | uint8_t* dest, |
| 65 | const uint8_t* src, |
| 66 | uint32_t size); |
| 67 | void CRYPT_AESEncrypt(CRYPT_aes_context* context, |
| 68 | uint8_t* dest, |
| 69 | const uint8_t* src, |
| 70 | uint32_t size); |
| 71 | |
| 72 | CRYPT_md5_context CRYPT_MD5Start(); |
| 73 | void CRYPT_MD5Update(CRYPT_md5_context* context, |
| 74 | pdfium::span<const uint8_t> data); |
| 75 | void CRYPT_MD5Finish(CRYPT_md5_context* context, uint8_t digest[16]); |
| 76 | void CRYPT_MD5Generate(pdfium::span<const uint8_t> data, uint8_t digest[16]); |
| 77 | |
| 78 | void CRYPT_SHA1Start(CRYPT_sha1_context* context); |
| 79 | void CRYPT_SHA1Update(CRYPT_sha1_context* context, |
| 80 | const uint8_t* data, |
| 81 | uint32_t size); |
| 82 | void CRYPT_SHA1Finish(CRYPT_sha1_context* context, uint8_t digest[20]); |
| 83 | void CRYPT_SHA1Generate(const uint8_t* data, uint32_t size, uint8_t digest[20]); |
| 84 | |
| 85 | void CRYPT_SHA256Start(CRYPT_sha2_context* context); |
| 86 | void CRYPT_SHA256Update(CRYPT_sha2_context* context, |
| 87 | const uint8_t* data, |
| 88 | uint32_t size); |
| 89 | void CRYPT_SHA256Finish(CRYPT_sha2_context* context, uint8_t digest[32]); |
| 90 | void CRYPT_SHA256Generate(const uint8_t* data, |
| 91 | uint32_t size, |
| 92 | uint8_t digest[32]); |
| 93 | |
| 94 | void CRYPT_SHA384Start(CRYPT_sha2_context* context); |
| 95 | void CRYPT_SHA384Update(CRYPT_sha2_context* context, |
| 96 | const uint8_t* data, |
| 97 | uint32_t size); |
| 98 | void CRYPT_SHA384Finish(CRYPT_sha2_context* context, uint8_t digest[48]); |
| 99 | void CRYPT_SHA384Generate(const uint8_t* data, |
| 100 | uint32_t size, |
| 101 | uint8_t digest[48]); |
| 102 | |
| 103 | void CRYPT_SHA512Start(CRYPT_sha2_context* context); |
| 104 | void CRYPT_SHA512Update(CRYPT_sha2_context* context, |
| 105 | const uint8_t* data, |
| 106 | uint32_t size); |
| 107 | void CRYPT_SHA512Finish(CRYPT_sha2_context* context, uint8_t digest[64]); |
| 108 | void CRYPT_SHA512Generate(const uint8_t* data, |
| 109 | uint32_t size, |
| 110 | uint8_t digest[64]); |
| 111 | |
| 112 | #endif // CORE_FDRM_FX_CRYPT_H_ |