mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-29 08:01:08 +00:00
1a4596601f
Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
54 lines
1.3 KiB
C
54 lines
1.3 KiB
C
/*
|
|
* Copyright (c) 2011 The Chromium OS Authors.
|
|
* (C) Copyright 2010 - 2011 NVIDIA Corporation <www.nvidia.com>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#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_ */
|