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// This file has been copied 1:1 from www.spale.com/download/scrypt/scrypt1.0/sha256.c
// Besides these 2 comment lines and the correction of uint32 (see below) nothing has been changed.
#ifndef __SHA256_H__
#define __SHA256_H__
typedef unsigned int uint32;
typedef unsigned char uint8;
#define SHA256_DIGEST_SIZE 32
#ifdef SHA256_OLD
typedef struct
{
uint32 total[2];
uint32 state[8];
uint8 buffer[64];
} t_SHA256Context, *t_pSHA256Context;
void SHA256Init (t_pSHA256Context pContext);
void SHA256Append (t_pSHA256Context pContext, uint8 *input, uint32 length );
void SHA256Finish (t_pSHA256Context pContext, uint8 digest[32] );
#else
typedef struct
{
uint32 state[8];
uint32 total[2];
size_t buflen;
uint32 buffer[32];
} t_SHA256Context, *t_pSHA256Context;
// Always make sure that these functions are compiled with O3 optimisation or
// else, performance is about 5 times worse! See also SHA256ProcessBlock in sha256.cpp.
void SHA256Init (t_pSHA256Context pContext) __attribute__((optimize("-O3")));
void SHA256Append (t_pSHA256Context pContext, const void *buffer, size_t len) __attribute__((optimize("-O3")));
void SHA256Finish (t_pSHA256Context pContext, void *pDigest) __attribute__((optimize("-O3")));
#endif
#endif
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