Cipher Block Chaining (CBC) mode. More...

#include "core/crypto.h"
#include "cipher_modes/cbc.h"
#include "debug.h"

Macros
#define	TRACE_LEVEL CRYPTO_TRACE_LEVEL

Functions
__weak_func error_t	cbcEncrypt (const CipherAlgo cipher, void context, uint8_t iv, const uint8_t p, uint8_t *c, size_t length)
	CBC encryption. More...

__weak_func error_t	cbcDecrypt (const CipherAlgo cipher, void context, uint8_t iv, const uint8_t c, uint8_t *p, size_t length)
	CBC decryption. More...

Detailed Description

Cipher Block Chaining (CBC) mode.

License

SPDX-License-Identifier: GPL-2.0-or-later

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.

Description

The Cipher Block Chaining (CBC) mode is a confidentiality mode whose encryption process features the combining of the plaintext blocks with the previous ciphertext blocks. The CBC mode requires an IV to combine with the first plaintext block. Refer to SP 800-38A for more details

Author: Oryx Embedded SARL (www.oryx-embedded.com)

Version: 2.4.4

Definition in file cbc.c.

Macro Definition Documentation

◆ TRACE_LEVEL

#define TRACE_LEVEL CRYPTO_TRACE_LEVEL

Definition at line 39 of file cbc.c.

Function Documentation

◆ cbcDecrypt()

__weak_func error_t cbcDecrypt	(	const CipherAlgo *	cipher,
		void *	context,
		uint8_t *	iv,
		const uint8_t *	c,
		uint8_t *	p,
		size_t	length
	)

CBC decryption.

Parameters

[in]	cipher	Cipher algorithm
[in]	context	Cipher algorithm context
[in,out]	iv	Initialization vector
[in]	c	Ciphertext to be decrypted
[out]	p	Plaintext resulting from the decryption
[in]	length	Total number of data bytes to be decrypted

Returns: Error code

Definition at line 108 of file cbc.c.

◆ cbcEncrypt()

__weak_func error_t cbcEncrypt	(	const CipherAlgo *	cipher,
		void *	context,
		uint8_t *	iv,
		const uint8_t *	p,
		uint8_t *	c,
		size_t	length
	)

CBC encryption.