957ba85ce9
Fix the function annotations in aes.h so they're compatible with kerneldoc. Signed-off-by: Marek Vasut <marex@denx.de>
57 lines
1.4 KiB
C
57 lines
1.4 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),
|
|
};
|
|
|
|
/**
|
|
* aes_expand_key() - Expand the AES key
|
|
*
|
|
* Expand a key into a key schedule, which is then used for the other
|
|
* operations.
|
|
*
|
|
* @key Key, of length AES_KEY_LENGTH bytes
|
|
* @expkey Buffer to place expanded key, AES_EXPAND_KEY_LENGTH
|
|
*/
|
|
void aes_expand_key(u8 *key, u8 *expkey);
|
|
|
|
/**
|
|
* aes_encrypt() - Encrypt single block of data with AES 128
|
|
*
|
|
* @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);
|
|
|
|
/**
|
|
* aes_decrypt() - Decrypt single block of data with AES 128
|
|
*
|
|
* @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_ */
|