// https://github.com/B-Con/crypto-algorithms
// Author:     Brad Conte (brad AT bradconte.com)
// Disclaimer: This code is presented "as is" without any guarantees.
// Details:    Defines the API for the corresponding SHA1 implementation.
// Copyright:  public domain

#pragma once

#include "arch.h"

typedef struct {
  uint32_t state[8];
  uint64_t bits;
  uint32_t len;
  unsigned char buffer[64];
} mg_sha256_ctx;

void mg_sha256_init(mg_sha256_ctx *);
void mg_sha256_update(mg_sha256_ctx *, const unsigned char *data, size_t len);
void mg_sha256_final(unsigned char digest[32], mg_sha256_ctx *);
void mg_hmac_sha256(uint8_t dst[32], uint8_t *key, size_t keysz, uint8_t *data,
                    size_t datasz);