The Tor Browser / file comparison
comparison: other-licenses/7zstub/src/Common/CRC.h
other-licenses/7zstub/src/Common/CRC.h
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| -1:000000000000 | 0:2c2917de44b6 |
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| 1 // Common/CRC.h | |
| 2 | |
| 3 #ifndef __COMMON_CRC_H | |
| 4 #define __COMMON_CRC_H | |
| 5 | |
| 6 #include <stddef.h> | |
| 7 #include "Types.h" | |
| 8 | |
| 9 class CCRC | |
| 10 { | |
| 11 UInt32 _value; | |
| 12 public: | |
| 13 static UInt32 Table[256]; | |
| 14 static void InitTable(); | |
| 15 | |
| 16 CCRC(): _value(0xFFFFFFFF){}; | |
| 17 void Init() { _value = 0xFFFFFFFF; } | |
| 18 void UpdateByte(Byte v); | |
| 19 void UpdateUInt16(UInt16 v); | |
| 20 void UpdateUInt32(UInt32 v); | |
| 21 void UpdateUInt64(UInt64 v); | |
| 22 void Update(const void *data, size_t size); | |
| 23 UInt32 GetDigest() const { return _value ^ 0xFFFFFFFF; } | |
| 24 static UInt32 CalculateDigest(const void *data, size_t size) | |
| 25 { | |
| 26 CCRC crc; | |
| 27 crc.Update(data, size); | |
| 28 return crc.GetDigest(); | |
| 29 } | |
| 30 static bool VerifyDigest(UInt32 digest, const void *data, size_t size) | |
| 31 { | |
| 32 return (CalculateDigest(data, size) == digest); | |
| 33 } | |
| 34 }; | |
| 35 | |
| 36 #endif |
