xtea.h File Reference

XTEA (eXtended TEA) More...

#include "core/crypto.h"

Go to the source code of this file.

Data Structures
struct	XteaContext
	XTEA algorithm context. More...

Macros
#define	XTEA_PRIVATE_CONTEXT
#define	XTEA_BLOCK_SIZE   8
#define	XTEA_NB_ROUNDS   32
#define	XTEA_CIPHER_ALGO   (&xteaCipherAlgo)

Functions
error_t	xteaInit (XteaContext *context, const uint8_t *key, size_t keyLen)
	Key expansion. More...
void	xteaEncryptBlock (XteaContext *context, const uint8_t *input, uint8_t *output)
	Encrypt a 16-byte block using XTEA algorithm. More...
void	xteaDecryptBlock (XteaContext *context, const uint8_t *input, uint8_t *output)
	Decrypt a 16-byte block using XTEA algorithm. More...
void	xteaDeinit (XteaContext *context)
	Release XTEA context. More...

Variables
const CipherAlgo	xteaCipherAlgo

Detailed Description

XTEA (eXtended TEA)

License

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

Copyright (C) 2010-2024 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.

Author

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

Version

2.4.4

Definition in file xtea.h.

Macro Definition Documentation

XTEA_BLOCK_SIZE

#define XTEA_BLOCK_SIZE   8

Definition at line 43 of file xtea.h.

XTEA_CIPHER_ALGO

#define XTEA_CIPHER_ALGO   (&xteaCipherAlgo)

Definition at line 47 of file xtea.h.

XTEA_NB_ROUNDS

#define XTEA_NB_ROUNDS   32

Definition at line 45 of file xtea.h.

XTEA_PRIVATE_CONTEXT

#define XTEA_PRIVATE_CONTEXT

Definition at line 39 of file xtea.h.

Function Documentation

xteaDecryptBlock()

void xteaDecryptBlock	(	XteaContext *	context,
		const uint8_t *	input,
		uint8_t *	output
	)

Decrypt a 16-byte block using XTEA algorithm.

Parameters

[in]	context	Pointer to the XTEA context
[in]	input	Ciphertext block to decrypt
[out]	output	Plaintext block resulting from decryption

Decrypt a 16-byte block using XTEA algorithm.

Parameters

[in]	context	Pointer to the XTEA context
[in]	input	Ciphertext block to decrypt
[out]	output	Plaintext block resulting from decryption

Definition at line 134 of file xtea.c.

xteaDeinit()

void xteaDeinit

(

XteaContext *

context

)

Release XTEA context.

Parameters

[in]

context

Pointer to the XTEA context

Definition at line 168 of file xtea.c.

xteaEncryptBlock()

void xteaEncryptBlock	(	XteaContext *	context,
		const uint8_t *	input,
		uint8_t *	output
	)

Encrypt a 16-byte block using XTEA algorithm.

Parameters

[in]	context	Pointer to the XTEA context
[in]	input	Plaintext block to encrypt
[out]	output	Ciphertext block resulting from encryption

Encrypt a 16-byte block using XTEA algorithm.

Parameters

[in]	context	Pointer to the XTEA context
[in]	input	Plaintext block to encrypt
[out]	output	Ciphertext block resulting from encryption

Definition at line 98 of file xtea.c.

xteaInit()

error_t xteaInit	(	XteaContext *	context,
		const uint8_t *	key,
		size_t	keyLen
	)

Key expansion.

Parameters

[in]	context	Pointer to the XTEA context to initialize
[in]	key	Pointer to the key
[in]	keyLen	Length of the key

Returns

Error code

Key expansion.

Parameters

[in]	context	Pointer to the XTEA context to initialize
[in]	key	Pointer to the key
[in]	keyLen	Length of the key (must be set to 16)

Returns

Error code

Definition at line 69 of file xtea.c.

Variable Documentation

xteaCipherAlgo

const CipherAlgo xteaCipherAlgo

extern

Definition at line 46 of file xtea.c.