aes-internal.c File Reference

AES (Rijndael) cipher. More...

#include "includes.h"
#include "common.h"
#include "crypto.h"
#include "aes_i.h"

Include dependency graph for aes-internal.c:

Go to the source code of this file.

Functions
void	rijndaelKeySetupEnc (u32 rk[], const u8 cipherKey[])
Variables
const u32	Te0 [256]
const u32	Te1 [256]
const u32	Te2 [256]
const u32	Te3 [256]
const u32	Te4 [256]
const u32	Td0 [256]
const u32	Td1 [256]
const u32	Td2 [256]
const u32	Td3 [256]
const u32	Td4 [256]
const u32	rcon []

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Detailed Description

AES (Rijndael) cipher.

Modifications to public domain implementation:

• support only 128-bit keys
• cleanup
• use C pre-processor to make it easier to change S table access
• added option (AES_SMALL_TABLES) for reducing code size by about 8 kB at cost of reduced throughput (quite small difference on Pentium 4, 10-25% when using -O1 or -O2 optimization)

Copyright

Copyright (c) 2003-2005, Jouni Malinen <j@w1.fi>

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License version 2 as published by the Free Software Foundation.

Alternatively, this software may be distributed under the terms of BSD license.

See README and COPYING for more details.

Definition in file aes-internal.c.

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Function Documentation

void rijndaelKeySetupEnc	(	u32	rk[],
		const u8	cipherKey[]
	)

Expand the cipher key into the encryption key schedule.

Returns:

the number of rounds for the given cipher key size.

Definition at line 787 of file aes-internal.c.

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Variable Documentation

const u32 rcon[]

Initial value:

 {
        0x01000000, 0x02000000, 0x04000000, 0x08000000,
        0x10000000, 0x20000000, 0x40000000, 0x80000000,
        0x1B000000, 0x36000000, 
}

Definition at line 737 of file aes-internal.c.