#ifndef LIBMINEZIPER_CRYPTO
#define LIBMINEZIPER_CRYPTO

/*************************** HEADER FILES ***************************/
#include <stddef.h>

/****************************** MACROS ******************************/
#define SHA256_BLOCK_SIZE 32  // SHA256 outputs a 32 byte digest

/**************************** DATA TYPES ****************************/
typedef unsigned char BYTE;  // 8-bit byte
typedef unsigned int WORD;  // 32-bit word, change to "long" for 16-bit machines

typedef struct
{
  BYTE data[64];
  WORD datalen;
  unsigned long long bitlen;
  WORD state[8];
} SHA256_CTX;

/*********************** FUNCTION DECLARATIONS **********************/
void sha256_init(SHA256_CTX *ctx);
void sha256_update(SHA256_CTX *ctx, const BYTE data[], size_t len);
void sha256_final(SHA256_CTX *ctx, BYTE hash[]);

#endif