AES - Advanced Encryption Standard

Classes
struct	aes_context
	AES context structure. More...

Functions
void	aes_set_key (aes_context *ctx, const unsigned char *key, int keysize)
	AES key schedule.
void	aes_encrypt (aes_context *ctx, unsigned char input[16], unsigned char output[16])
	AES block encryption (ECB mode)
void	aes_decrypt (aes_context *ctx, unsigned char input[16], unsigned char output[16])
	AES block decryption (ECB mode)
void	aes_cbc_encrypt (aes_context *ctx, unsigned char iv[16], unsigned char *input, unsigned char *output, int len)
	AES-CBC buffer encryption.
void	aes_cbc_decrypt (aes_context *ctx, unsigned char iv[16], unsigned char *input, unsigned char *output, int len)
	AES-CBC buffer decryption.
int	aes_self_test (int verbose)
	Checkup routine.

Detailed Description

#include< aes.h>


Function to implement the symetric block cyper AES

Function Documentation

aes_cbc_decrypt()

void aes_cbc_decrypt	(	aes_context *	ctx,
		unsigned char	iv[16],
		unsigned char *	input,
		unsigned char *	output,
		int	len )

#include <aes.h>

AES-CBC buffer decryption.

Parameters

ctx	AES context
iv	initialization vector (modified after use)
input	buffer holding the ciphertext
output	buffer holding the plaintext
len	length of the data to be decrypted

aes_cbc_encrypt()

void aes_cbc_encrypt	(	aes_context *	ctx,
		unsigned char	iv[16],
		unsigned char *	input,
		unsigned char *	output,
		int	len )

#include <aes.h>

AES-CBC buffer encryption.

Parameters

ctx	AES context
iv	initialization vector (modified after use)
input	buffer holding the plaintext
output	buffer holding the ciphertext
len	length of the data to be encrypted

aes_decrypt()

void aes_decrypt	(	aes_context *	ctx,
		unsigned char	input[16],
		unsigned char	output[16] )

#include <aes.h>

AES block decryption (ECB mode)

Parameters

ctx	AES context
input	ciphertext block
output	plaintext block

aes_encrypt()

void aes_encrypt	(	aes_context *	ctx,
		unsigned char	input[16],
		unsigned char	output[16] )

#include <aes.h>

AES block encryption (ECB mode)

Parameters

ctx	AES context
input	plaintext block
output	ciphertext block

aes_self_test()

int aes_self_test

(

int

verbose

)

#include <aes.h>

Checkup routine.

Returns

0 if successful, or 1 if the test failed

aes_set_key()

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

#include <aes.h>

AES key schedule.

Parameters

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