sha256.h File Reference

SHA-256 (Secure Hash Algorithm 256) More...

#include "core/crypto.h"

Go to the source code of this file.

Data Structures

struct  Sha256Context
 SHA-256 algorithm context. More...


#define SHA256_BLOCK_SIZE   64
#define SHA256_DIGEST_SIZE   32
#define SHA256_OID   sha256Oid
#define SHA256_HASH_ALGO   (&sha256HashAlgo)


error_t sha256Compute (const void *data, size_t length, uint8_t *digest)
 Digest a message using SHA-256. More...
void sha256Init (Sha256Context *context)
 Initialize SHA-256 message digest context. More...
void sha256Update (Sha256Context *context, const void *data, size_t length)
 Update the SHA-256 context with a portion of the message being hashed. More...
void sha256Final (Sha256Context *context, uint8_t *digest)
 Finish the SHA-256 message digest. More...
void sha256ProcessBlock (Sha256Context *context)
 Process message in 16-word blocks. More...


const uint8_t sha256Oid [9]
const HashAlgo sha256HashAlgo

Detailed Description

SHA-256 (Secure Hash Algorithm 256)


Copyright (C) 2010-2018 Oryx Embedded SARL. All rights reserved.

This file is part of CycloneCrypto Open.

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

Oryx Embedded SARL (

Definition in file sha256.h.

Macro Definition Documentation


#define SHA256_BLOCK_SIZE   64

Definition at line 36 of file sha256.h.


#define SHA256_DIGEST_SIZE   32

Definition at line 38 of file sha256.h.


#define SHA256_HASH_ALGO   (&sha256HashAlgo)

Definition at line 42 of file sha256.h.

◆ SHA256_OID

#define SHA256_OID   sha256Oid

Definition at line 40 of file sha256.h.

Function Documentation

◆ sha256Compute()

error_t sha256Compute ( const void *  data,
size_t  length,
uint8_t *  digest 

Digest a message using SHA-256.

[in]dataPointer to the message being hashed
[in]lengthLength of the message
[out]digestPointer to the calculated digest
Error code

Definition at line 104 of file sha256.c.

◆ sha256Final()

void sha256Final ( Sha256Context context,
uint8_t *  digest 

Finish the SHA-256 message digest.

[in]contextPointer to the SHA-256 context
[out]digestCalculated digest (optional parameter)

Definition at line 196 of file sha256.c.

◆ sha256Init()

void sha256Init ( Sha256Context context)

Initialize SHA-256 message digest context.

[in]contextPointer to the SHA-256 context to initialize

Definition at line 131 of file sha256.c.

◆ sha256ProcessBlock()

void sha256ProcessBlock ( Sha256Context context)

Process message in 16-word blocks.

[in]contextPointer to the SHA-256 context

Definition at line 236 of file sha256.c.

◆ sha256Update()

void sha256Update ( Sha256Context context,
const void *  data,
size_t  length 

Update the SHA-256 context with a portion of the message being hashed.

[in]contextPointer to the SHA-256 context
[in]dataPointer to the buffer being hashed
[in]lengthLength of the buffer

Definition at line 157 of file sha256.c.

Variable Documentation

◆ sha256HashAlgo

const HashAlgo sha256HashAlgo

Definition at line 81 of file sha256.c.

◆ sha256Oid

const uint8_t sha256Oid[9]

Definition at line 78 of file sha256.c.