77 lines
2.7 KiB
C++
77 lines
2.7 KiB
C++
/*
|
|
MIT License
|
|
|
|
Copyright (c) 2021 Jérémy LAMBERT (SystemGlitch)
|
|
|
|
Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
of this software and associated documentation files (the "Software"), to deal
|
|
in the Software without restriction, including without limitation the rights
|
|
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
copies of the Software, and to permit persons to whom the Software is
|
|
furnished to do so, subject to the following conditions:
|
|
|
|
The above copyright notice and this permission notice shall be included in all
|
|
copies or substantial portions of the Software.
|
|
|
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
SOFTWARE.
|
|
*/
|
|
|
|
#ifndef SHA256_H
|
|
#define SHA256_H
|
|
|
|
#include <string>
|
|
#include <array>
|
|
|
|
class SHA256 {
|
|
|
|
public:
|
|
SHA256();
|
|
void update(const uint8_t * data, size_t length);
|
|
void update(const std::string &data);
|
|
uint8_t * digest();
|
|
|
|
static std::string toString(const uint8_t * digest);
|
|
|
|
private:
|
|
uint8_t m_data[64];
|
|
uint32_t m_blocklen;
|
|
uint64_t m_bitlen;
|
|
uint32_t m_state[8]; //A, B, C, D, E, F, G, H
|
|
|
|
static constexpr std::array<uint32_t, 64> K = {
|
|
0x428a2f98,0x71374491,0xb5c0fbcf,0xe9b5dba5,
|
|
0x3956c25b,0x59f111f1,0x923f82a4,0xab1c5ed5,
|
|
0xd807aa98,0x12835b01,0x243185be,0x550c7dc3,
|
|
0x72be5d74,0x80deb1fe,0x9bdc06a7,0xc19bf174,
|
|
0xe49b69c1,0xefbe4786,0x0fc19dc6,0x240ca1cc,
|
|
0x2de92c6f,0x4a7484aa,0x5cb0a9dc,0x76f988da,
|
|
0x983e5152,0xa831c66d,0xb00327c8,0xbf597fc7,
|
|
0xc6e00bf3,0xd5a79147,0x06ca6351,0x14292967,
|
|
0x27b70a85,0x2e1b2138,0x4d2c6dfc,0x53380d13,
|
|
0x650a7354,0x766a0abb,0x81c2c92e,0x92722c85,
|
|
0xa2bfe8a1,0xa81a664b,0xc24b8b70,0xc76c51a3,
|
|
0xd192e819,0xd6990624,0xf40e3585,0x106aa070,
|
|
0x19a4c116,0x1e376c08,0x2748774c,0x34b0bcb5,
|
|
0x391c0cb3,0x4ed8aa4a,0x5b9cca4f,0x682e6ff3,
|
|
0x748f82ee,0x78a5636f,0x84c87814,0x8cc70208,
|
|
0x90befffa,0xa4506ceb,0xbef9a3f7,0xc67178f2
|
|
};
|
|
|
|
static uint32_t rotr(uint32_t x, uint32_t n);
|
|
static uint32_t choose(uint32_t e, uint32_t f, uint32_t g);
|
|
static uint32_t majority(uint32_t a, uint32_t b, uint32_t c);
|
|
static uint32_t sig0(uint32_t x);
|
|
static uint32_t sig1(uint32_t x);
|
|
void transform();
|
|
void pad();
|
|
void revert(uint8_t * hash);
|
|
};
|
|
|
|
#endif // SHA256_H
|