aes.h File Reference

AES block cipher. More...

#include "config.h"
#include <stddef.h>
#include <stdint.h>
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Data Structures

struct  mbedtls_aes_context
 AES context structure. More...

Defines

#define MBEDTLS_AES_ENCRYPT   1
#define MBEDTLS_AES_DECRYPT   0
#define MBEDTLS_ERR_AES_INVALID_KEY_LENGTH   -0x0020
 Invalid key length.
#define MBEDTLS_ERR_AES_INVALID_INPUT_LENGTH   -0x0022
 Invalid data input length.

Functions

void mbedtls_aes_init (mbedtls_aes_context *ctx)
 Initialize AES context.
void mbedtls_aes_free (mbedtls_aes_context *ctx)
 Clear AES context.
int mbedtls_aes_setkey_enc (mbedtls_aes_context *ctx, const unsigned char *key, unsigned int keybits)
 AES key schedule (encryption).
int mbedtls_aes_setkey_dec (mbedtls_aes_context *ctx, const unsigned char *key, unsigned int keybits)
 AES key schedule (decryption).
int mbedtls_aes_crypt_ecb (mbedtls_aes_context *ctx, int mode, const unsigned char input[16], unsigned char output[16])
 AES-ECB block encryption/decryption.
void mbedtls_aes_encrypt (mbedtls_aes_context *ctx, const unsigned char input[16], unsigned char output[16])
 Internal AES block encryption function (Only exposed to allow overriding it, see MBEDTLS_AES_ENCRYPT_ALT).
void mbedtls_aes_decrypt (mbedtls_aes_context *ctx, const unsigned char input[16], unsigned char output[16])
 Internal AES block decryption function (Only exposed to allow overriding it, see MBEDTLS_AES_DECRYPT_ALT).
int mbedtls_aes_self_test (int verbose)
 Checkup routine.

Detailed Description

AES block cipher.

Copyright (C) 2006-2015, ARM Limited, All Rights Reserved SPDX-License-Identifier: Apache-2.0

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

This file is part of mbed TLS (https://tls.mbed.org)

Definition in file aes.h.


Define Documentation

#define MBEDTLS_AES_DECRYPT   0

Definition at line 37 of file aes.h.

#define MBEDTLS_AES_ENCRYPT   1

Definition at line 36 of file aes.h.

#define MBEDTLS_ERR_AES_INVALID_INPUT_LENGTH   -0x0022

Invalid data input length.

Definition at line 40 of file aes.h.

#define MBEDTLS_ERR_AES_INVALID_KEY_LENGTH   -0x0020

Invalid key length.

Definition at line 39 of file aes.h.


Function Documentation

int mbedtls_aes_crypt_ecb ( mbedtls_aes_context ctx,
int  mode,
const unsigned char  input[16],
unsigned char  output[16] 
)

AES-ECB block encryption/decryption.

Parameters:
ctx AES context
mode MBEDTLS_AES_ENCRYPT or MBEDTLS_AES_DECRYPT
input 16-byte input block
output 16-byte output block
Returns:
0 if successful
void mbedtls_aes_decrypt ( mbedtls_aes_context ctx,
const unsigned char  input[16],
unsigned char  output[16] 
)

Internal AES block decryption function (Only exposed to allow overriding it, see MBEDTLS_AES_DECRYPT_ALT).

Parameters:
ctx AES context
input Ciphertext block
output Output (plaintext) block
void mbedtls_aes_encrypt ( mbedtls_aes_context ctx,
const unsigned char  input[16],
unsigned char  output[16] 
)

Internal AES block encryption function (Only exposed to allow overriding it, see MBEDTLS_AES_ENCRYPT_ALT).

Parameters:
ctx AES context
input Plaintext block
output Output (ciphertext) block
void mbedtls_aes_free ( mbedtls_aes_context ctx  ) 

Clear AES context.

Parameters:
ctx AES context to be cleared
void mbedtls_aes_init ( mbedtls_aes_context ctx  ) 

Initialize AES context.

Parameters:
ctx AES context to be initialized
int mbedtls_aes_self_test ( int  verbose  ) 

Checkup routine.

Returns:
0 if successful, or 1 if the test failed
int mbedtls_aes_setkey_dec ( mbedtls_aes_context ctx,
const unsigned char *  key,
unsigned int  keybits 
)

AES key schedule (decryption).

Parameters:
ctx AES context to be initialized
key decryption key
keybits must be 128, 192 or 256
Returns:
0 if successful, or MBEDTLS_ERR_AES_INVALID_KEY_LENGTH
int mbedtls_aes_setkey_enc ( mbedtls_aes_context ctx,
const unsigned char *  key,
unsigned int  keybits 
)

AES key schedule (encryption).

Parameters:
ctx AES context to be initialized
key encryption key
keybits must be 128, 192 or 256
Returns:
0 if successful, or MBEDTLS_ERR_AES_INVALID_KEY_LENGTH

Generated on 11 Mar 2017 for mbed TLS v2.4.2 by  doxygen 1.6.1