mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-11 15:37:23 +00:00
71 lines
2 KiB
C
71 lines
2 KiB
C
|
/*
|
||
|
|
* Copyright (c) 2011 The Chromium OS Authors.
|
||
|
|
* (C) Copyright 2010 - 2011 NVIDIA Corporation <www.nvidia.com>
|
||
|
|
*
|
||
|
|
* See file CREDITS for list of people who contributed to this
|
||
|
|
* project.
|
||
|
|
*
|
||
|
|
* 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., 59 Temple Place, Suite 330, Boston,
|
||
|
|
* MA 02111-1307 USA
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef _AES_REF_H_
|
||
|
|
#define _AES_REF_H_
|
||
|
|
|
||
|
|
/*
|
||
|
|
* AES encryption library, with small code size, supporting only 128-bit AES
|
||
|
|
*
|
||
|
|
* AES is a stream cipher which works a block at a time, with each block
|
||
|
|
* in this case being AES_KEY_LENGTH bytes.
|
||
|
|
*/
|
||
|
|
|
||
|
|
enum {
|
||
|
|
AES_STATECOLS = 4, /* columns in the state & expanded key */
|
||
|
|
AES_KEYCOLS = 4, /* columns in a key */
|
||
|
|
AES_ROUNDS = 10, /* rounds in encryption */
|
||
|
|
|
||
|
|
AES_KEY_LENGTH = 128 / 8,
|
||
|
|
AES_EXPAND_KEY_LENGTH = 4 * AES_STATECOLS * (AES_ROUNDS + 1),
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Expand a key into a key schedule, which is then used for the other
|
||
|
|
* operations.
|
||
|
|
*
|
||
|
|
* \param key Key, of length AES_KEY_LENGTH bytes
|
||
|
|
* \param expkey Buffer to place expanded key, AES_EXPAND_KEY_LENGTH
|
||
|
|
*/
|
||
|
|
void aes_expand_key(u8 *key, u8 *expkey);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Encrypt a single block of data
|
||
|
|
*
|
||
|
|
* in Input data
|
||
|
|
* expkey Expanded key to use for encryption (from aes_expand_key())
|
||
|
|
* out Output data
|
||
|
|
*/
|
||
|
|
void aes_encrypt(u8 *in, u8 *expkey, u8 *out);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Decrypt a single block of data
|
||
|
|
*
|
||
|
|
* in Input data
|
||
|
|
* expkey Expanded key to use for decryption (from aes_expand_key())
|
||
|
|
* out Output data
|
||
|
|
*/
|
||
|
|
void aes_decrypt(u8 *in, u8 *expkey, u8 *out);
|
||
|
|
|
||
|
|
#endif /* _AES_REF_H_ */
|