aes.h File Reference

AES block cipher, as specified by NIST FIPS 197. More...

#include "beecrypt.h"
#include "aesopt.h"

Go to the source code of this file.

Data Structures
struct	aesParam
	Holds all the parameters necessary for the AES cipher. More...
Functions
int	aesSetup (aesParam *ap, const byte *key, size_t keybits, cipherOperation op)
	This function performs the cipher's key expansion.
int	aesSetIV (aesParam *ap, const byte *iv)
	This function sets the Initialization Vector.
int	aesEncrypt (aesParam *ap, uint32_t *dst, const uint32_t *src)
	This function performs the raw AES encryption; it encrypts one block of 128 bits.
int	aesDecrypt (aesParam *ap, uint32_t *dst, const uint32_t *src)
	This function performs the raw AES decryption; it decrypts one block of 128 bits.
uint32_t *	aesFeedback (aesParam *ap)
Variables
const blockCipher	aes
	Holds the full API description of the AES algorithm.

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Detailed Description

AES block cipher, as specified by NIST FIPS 197.

Author:

Bob Deblier <bob.deblier@pandora.be>

Definition in file aes.h.

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Function Documentation

aesDecrypt (  aesParam *  ap, uint32_t *  dst, const uint32_t *  src )

This function performs the raw AES decryption; it decrypts one block of 128 bits. Parameters: ap  The cipher's parameter block. dst  The cleartext; should be aligned on 32-bit boundary. src  The ciphertext; should be aligned on 32-bit boundary. Return values: 0  on success.

aesEncrypt (  aesParam *  ap, uint32_t *  dst, const uint32_t *  src )

This function performs the raw AES encryption; it encrypts one block of 128 bits. Parameters: ap  The cipher's parameter block. dst  The ciphertext; should be aligned on 32-bit boundary. src  The cleartext; should be aligned on 32-bit boundary. Return values: 0  on success.

uint32_t* aesFeedback (  aesParam *  ap  )

int aesSetIV (  aesParam *  ap, const byte *  iv )

This function sets the Initialization Vector. Note: This function is only useful in block chaining or feedback modes. Parameters: ap  The cipher's parameter block. iv  The initialization vector; may be null. Return values: 0  on success.

int aesSetup (  aesParam *  ap, const byte *  key, size_t  keybits, cipherOperation  op )

This function performs the cipher's key expansion. Parameters: ap  The cipher's parameter block. key  The key value. keybits  The number of bits in the key; legal values are: 128, 192 and 256. op  ENCRYPT or DECRYPT. Return values: 0  on success. -1  on failure.

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Variable Documentation

aes

Holds the full API description of the AES algorithm.

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