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/*********************************************************************
* Filename: sha256.h
* Author: Brad Conte (brad AT bradconte.com)
* Copyright:
* Disclaimer: This code is presented "as is" without any guarantees.
* Details: Defines the API for the corresponding SHA1 implementation.
*
* File copied from the project: https://github.com/B-Con/crypto-algorithms
* License (quoting from author's github project):
* This code is released into the public domain free of any restrictions. The author requests
* acknowledgement if the code is used, but does not require it. This code is provided free of any
* liability and without any quality claims by the author.
*
*********************************************************************/
#ifndef SHA256_H
#define SHA256_H
/*************************** HEADER FILES ***************************/
#include <stddef.h>
#include <stdint.h>
/****************************** MACROS ******************************/
#define SHA256_BLOCK_SIZE 32 // SHA256 outputs a 32 byte digest
/**************************** DATA TYPES ****************************/
typedef struct {
uint8_t data[64];
uint32_t datalen;
unsigned long long bitlen;
uint32_t state[8];
} SHA256_CTX;
/*********************** FUNCTION DECLARATIONS **********************/
void _librist_SHA256_Transform(SHA256_CTX *ctx, const uint8_t data[]);
void _librist_SHA256_Init(SHA256_CTX *ctx);
void _librist_SHA256_Update(SHA256_CTX *ctx, const uint8_t data[], size_t len);
void _librist_SHA256_Final(SHA256_CTX *ctx, uint8_t hash[]);
#endif // SHA256_H
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