From 4fd287655a72b9aea14cdac715ad5b90ed082ed2 Mon Sep 17 00:00:00 2001 From: Raghuram Subramani Date: Sun, 19 Jun 2022 19:47:51 +0530 Subject: add circuitpython code --- circuitpython/lib/crypto-algorithms/sha256.h | 35 ++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 circuitpython/lib/crypto-algorithms/sha256.h (limited to 'circuitpython/lib/crypto-algorithms/sha256.h') diff --git a/circuitpython/lib/crypto-algorithms/sha256.h b/circuitpython/lib/crypto-algorithms/sha256.h new file mode 100644 index 0000000..9c19472 --- /dev/null +++ b/circuitpython/lib/crypto-algorithms/sha256.h @@ -0,0 +1,35 @@ +/********************************************************************* +* Source: https://github.com/B-Con/crypto-algorithms +* Filename: sha256.h +* Author: Brad Conte (brad AT bradconte.com) +* Copyright: This code is released into the public domain. +* Disclaimer: This code is presented "as is" without any guarantees. +* Details: Defines the API for the corresponding SHA1 implementation. +*********************************************************************/ + +#ifndef SHA256_H +#define SHA256_H + +/*************************** HEADER FILES ***************************/ +#include + +/****************************** 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]; +} CRYAL_SHA256_CTX; + +/*********************** FUNCTION DECLARATIONS **********************/ +void sha256_init(CRYAL_SHA256_CTX *ctx); +void sha256_update(CRYAL_SHA256_CTX *ctx, const BYTE data[], size_t len); +void sha256_final(CRYAL_SHA256_CTX *ctx, BYTE hash[]); + +#endif // SHA256_H -- cgit v1.2.3