polarssl/aes.h File Reference

Go to the source code of this file.

Classes
struct	aes_context
	AES context structure. More...
Defines
#define	AES_ENCRYPT   1
#define	AES_DECRYPT   0
#define	POLARSSL_ERR_AES_INVALID_KEY_LENGTH   -0x0800
#define	POLARSSL_ERR_AES_INVALID_INPUT_LENGTH   -0x0810
Functions
int	aes_setkey_enc (aes_context *ctx, const unsigned char *key, int keysize)
	AES key schedule (encryption)
int	aes_setkey_dec (aes_context *ctx, const unsigned char *key, int keysize)
	AES key schedule (decryption)
int	aes_crypt_ecb (aes_context *ctx, int mode, const unsigned char input[16], unsigned char output[16])
	AES-ECB block encryption/decryption.
int	aes_crypt_cbc (aes_context *ctx, int mode, int length, unsigned char iv[16], const unsigned char *input, unsigned char *output)
	AES-CBC buffer encryption/decryption Length should be a multiple of the block size (16 bytes)
int	aes_crypt_cfb128 (aes_context *ctx, int mode, int length, int *iv_off, unsigned char iv[16], const unsigned char *input, unsigned char *output)
	AES-CFB128 buffer encryption/decryption.
int	aes_self_test (int verbose)
	Checkup routine.

---

Detailed Description

Copyright (C) 2006-2010, Brainspark B.V.

This file is part of PolarSSL (http://www.polarssl.org) Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>

All rights reserved.

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.

---

Function Documentation

int aes_crypt_cbc	(	aes_context *	ctx,
		int	mode,
		int	length,
		unsigned char	iv[16],
		const unsigned char *	input,
		unsigned char *	output
	)

AES-CBC buffer encryption/decryption Length should be a multiple of the block size (16 bytes)

Parameters:

ctx	AES context
mode	AES_ENCRYPT or AES_DECRYPT
length	length of the input data
iv	initialization vector (updated after use)
input	buffer holding the input data
output	buffer holding the output data

Returns:

0 if successful, or POLARSSL_ERR_AES_INVALID_INPUT_LENGTH

int aes_crypt_cfb128	(	aes_context *	ctx,
		int	mode,
		int	length,
		int *	iv_off,
		unsigned char	iv[16],
		const unsigned char *	input,
		unsigned char *	output
	)

AES-CFB128 buffer encryption/decryption.

Parameters:

ctx	AES context
mode	AES_ENCRYPT or AES_DECRYPT
length	length of the input data
iv_off	offset in IV (updated after use)
iv	initialization vector (updated after use)
input	buffer holding the input data
output	buffer holding the output data

Returns:

0 if successful

int aes_crypt_ecb	(	aes_context *	ctx,
		int	mode,
		const unsigned char	input[16],
		unsigned char	output[16]
	)

AES-ECB block encryption/decryption.

Parameters:

ctx	AES context
mode	AES_ENCRYPT or AES_DECRYPT
input	16-byte input block
output	16-byte output block

Returns:

0 if successful

int aes_self_test

(

int

verbose

)

Checkup routine.

Returns:

0 if successful, or 1 if the test failed

int aes_setkey_dec	(	aes_context *	ctx,
		const unsigned char *	key,
		int	keysize
	)

AES key schedule (decryption)

Parameters:

ctx	AES context to be initialized
key	decryption key
keysize	must be 128, 192 or 256

Returns:

0 if successful, or POLARSSL_ERR_AES_INVALID_KEY_LENGTH

int aes_setkey_enc	(	aes_context *	ctx,
		const unsigned char *	key,
		int	keysize
	)

AES key schedule (encryption)

Parameters:

ctx	AES context to be initialized
key	encryption key
keysize	must be 128, 192 or 256

Returns:

0 if successful, or POLARSSL_ERR_AES_INVALID_KEY_LENGTH