aes.h File Reference

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Detailed Description

Copyright (C) 2006-2009, Paul Bakker <polarssl_maintainer at polarssl.org> All rights reserved.

Joined copyright on original XySSL code with: Christophe Devine

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.

Definition in file aes.h.

Go to the source code of this file.

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

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Define Documentation

#define AES_DECRYPT   0

Definition at line 27 of file aes.h.

#define AES_ENCRYPT   1

Definition at line 26 of file aes.h.

Referenced by main().

#define POLARSSL_ERR_AES_INVALID_KEY_LENGTH   -0x0800

Definition at line 29 of file aes.h.

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Function Documentation

void aes_crypt_cbc	(	aes_context *	ctx,
		int	mode,
		int	length,
		unsigned char	iv[16],
		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

Referenced by main().

void aes_crypt_cfb128	(	aes_context *	ctx,
		int	mode,
		int	length,
		int *	iv_off,
		unsigned char	iv[16],
		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

void aes_crypt_ecb	(	aes_context *	ctx,
		int	mode,
		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

int aes_self_test

(

int

verbose

)

Checkup routine.

Returns:

0 if successful, or 1 if the test failed

Referenced by main().

int aes_setkey_dec	(	aes_context *	ctx,
		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,
		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

Referenced by main().