899eb0b5ce
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4898 42af7a65-404d-4744-a932-0658087f49c3
111 lines
4.1 KiB
C
111 lines
4.1 KiB
C
/************************************************************************************
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* arch/arm/src/lpc43xx/chip/lpc43_aes.h
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*
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* Copyright (C) 2012 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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************************************************************************************/
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#ifndef __ARCH_ARM_SRC_LPC43XX_CHIP_LPC43_AES_H
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#define __ARCH_ARM_SRC_LPC43XX_CHIP_LPC43_AES_H
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/************************************************************************************
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* Included Files
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************************************************************************************/
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#include <nuttx/config.h>
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/************************************************************************************
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* Pre-processor Definitions
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************************************************************************************/
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/* The AES is controlled through a set of simple API calls located in the LPC43xx
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* ROM. This value holds the pointer to the AES driver table.
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*/
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#define LPC43_ROM_AES_DRIVER_TABLE LPC43_ROM_DRIVER_TABLE2
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/************************************************************************************
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* Public Types
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************************************************************************************/
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enum lpc43_aescmd_e
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{
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AES_API_CMD_ENCODE_ECB = 0,
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AES_API_CMD_DECODE_ECB = 1,
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AES_API_CMD_ENCODE_CBC = 2,
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AES_API_CMD_DECODE_CBC = 3
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};
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struct lpc43_aes_s
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{
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/* Initialize the AES engine */
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void (*aes_Init)(void);
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/* Offset 0x04 -- Defines AES engine operation mode. See enum lpc43_aescmd_e */
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unsigned int (*aes_SetMode)(unsigned int cmd);
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/* Load 128-bit AES user keys */
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void (*aes_LoadKey1)(void);
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void (*aes_LoadKey2)(void);
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/* Loads randomly generated key in AES engine. To update the RNG and load a new
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* random number, use the API call otp_GenRand before aes_LoadKeyRNG.
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*/
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void (*aes_LoadKeyRNG)(void);
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/* Loads 128-bit AES software defined user key (16 bytes) */
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void (*aes_LoadKeySW)(unsigned char *key);
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/* Loads 128-bit AES initialization vector (16 bytes) */
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void (*aes_LoadIV_SW)(unsigned char *iv);
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/* Loads 128-bit AES IC specific initialization vector, which is used to decrypt
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* a boot image.
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*/
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void (*aes_LoadIV_IC)(void);
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};
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/************************************************************************************
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* Public Data
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************************************************************************************/
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/************************************************************************************
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* Public Functions
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************************************************************************************/
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#endif /* __ARCH_ARM_SRC_LPC43XX_CHIP_LPC43_AES_H */
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