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Fix CRC and hash calculations (#321)

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* Fix CRC calculation, add more CRC parameters

Use the Boost CRC module to calculate the CRC values.
Add options for final xor value, reflectIn and reflectOut.
Fixes #320

* Cleanup Hash view combo box, add CRC8

* Use offset/size consistently

* Cleanup: unify processing data by chunks

* Change CRC algorithm back, drop boost dependency

This is mostly the original algorithm, with a few fixes and small
additions (support for reflect In / Out, final XOR value).

* Use size_t for file read size consistently
This commit is contained in:
RADICS Áron
2021-10-26 17:21:48 +02:00
committed by GitHub
parent cab1089e22
commit a6b8597f5a
5 changed files with 365 additions and 242 deletions
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7
plugins/libimhex/include/hex/helpers/crypto.hpp
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@@ -14,8 +14,9 @@ namespace hex::crypt {
void initialize();
void exit();
u16 crc16(prv::Provider* &data, u64 offset, size_t size, u16 polynomial, u16 init);
u32 crc32(prv::Provider* &data, u64 offset, size_t size, u32 polynomial, u32 init);
u16 crc8(prv::Provider* &data, u64 offset, size_t size, u32 polynomial, u32 init, u32 xorout, bool reflectIn, bool reflectOut);
u16 crc16(prv::Provider* &data, u64 offset, size_t size, u32 polynomial, u32 init, u32 xorout, bool reflectIn, bool reflectOut);
u32 crc32(prv::Provider* &data, u64 offset, size_t size, u32 polynomial, u32 init, u32 xorout, bool reflectIn, bool reflectOut);
std::array<u8, 16> md5(prv::Provider* &data, u64 offset, size_t size);
std::array<u8, 20> sha1(prv::Provider* &data, u64 offset, size_t size);
@@ -54,4 +55,4 @@ namespace hex::crypt {
};
std::vector<u8> aesDecrypt(AESMode mode, KeyLength keyLength, const std::vector<u8> &key, std::array<u8, 8> nonce, std::array<u8, 8> iv, const std::vector<u8> &input);
}
}