From 044ad7c3987460ede48ff27afd6bdb0ca05a0432 Mon Sep 17 00:00:00 2001 From: Harald Welte Date: Mon, 4 Jul 2011 20:52:54 +0200 Subject: import at91lib from at91lib_20100901_softpack_1_9_v_1_0_svn_v15011 it's sad to see that atmel doesn't publish their svn repo or has a centralized location or even puts proper version/release info into the library itself --- utility/encryption/libtomcrypt.h | 149 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 149 insertions(+) create mode 100644 utility/encryption/libtomcrypt.h (limited to 'utility/encryption/libtomcrypt.h') diff --git a/utility/encryption/libtomcrypt.h b/utility/encryption/libtomcrypt.h new file mode 100644 index 0000000..4052075 --- /dev/null +++ b/utility/encryption/libtomcrypt.h @@ -0,0 +1,149 @@ +/* ---------------------------------------------------------------------------- + * ATMEL Microcontroller Software Support + * ---------------------------------------------------------------------------- + * Copyright (c) 2008, Atmel Corporation + * + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * - Redistributions of source code must retain the above copyright notice, + * this list of conditions and the disclaimer below. + * + * Atmel's name may not be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE + * DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, + * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, + * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * ---------------------------------------------------------------------------- + */ + +//------------------------------------------------------------------------------ +/// \unit +/// +/// !Purpose +/// +/// Firmware encryption using libTomCrypt +/// +/// !Usage +/// +/// -# ltc_init: Initialize LibTomCrypt +/// -# ltc_init_AES_CBC +/// -# ltc_init_AES_CTR +/// -# ltc_init_AES_ECB +/// -# ltc_init_3DES_CBC +/// -# ltc_init_3DES_CTR +/// -# ltc_init_3DES_ECB +/// -# ltc_cleanup +/// -# ltc_cleanup_CBC +/// -# ltc_cleanup_CTR +/// -# ltc_cleanup_ECB +/// -# ltc_decrypt +/// -# ltc_decrypt_CBC +/// -# ltc_decrypt_CTR +/// -# ltc_decrypt_ECB +//------------------------------------------------------------------------------ + +#ifndef BOOTLOADER_LIBTOMCRYPT_H +#define BOOTLOADER_LIBTOMCRYPT_H + +//------------------------------------------------------------------------------ +// Includes +//------------------------------------------------------------------------------ + +#include "config.h" + +#if defined(USE_ENCRYPTION) && (defined(ENCRYPTION_AES_LTC) || defined(ENCRYPTION_3DES_LTC)) + +//------------------------------------------------------------------------------ +// Check configuration +//------------------------------------------------------------------------------ + +// Supported modes +#if !defined(ENCRYPTION_CTR) && \ + !defined(ENCRYPTION_CBC) && \ + !defined(ENCRYPTION_ECB) + #error No other mode than ECB, CBC & CTR are supported. +#endif + +// Supported key length +#if defined(ENCRYPTION_AES_LTC) + #if (ENCRYPTION_KEY_LENGTH != 16) && \ + (ENCRYPTION_KEY_LENGTH != 24) && \ + (ENCRYPTION_KEY_LENGTH != 32) + #error Only a key length of 128, 192 or 256 bits are supported with AES. + #endif +#elif defined(ENCRYPTION_3DES_LTC) + #if (ENCRYPTION_KEY_LENGTH != 16) && \ + (ENCRYPTION_KEY_LENGTH != 24) + #error Only a key length of 128 or 192 bits are supported with Triple-DES. + #endif +#endif + +// Supported block length +#if defined(ENCRYPTION_AES_LTC) + #if (ENCRYPTION_BLOCK_LENGTH != 16) + #error Only a block length of 128 bits is supported with AES. + #endif +#elif defined(ENCRYPTION_3DES_LTC) + #if (ENCRYPTION_BLOCK_LENGTH != 8) + #error Only a block length of 64 bits is supported with Triple-DES. + #endif +#endif + +//------------------------------------------------------------------------------ +// Definitions +//------------------------------------------------------------------------------ + +// Functions +#ifdef ONLY_ONE_ENCRYPTION +#define ENCRYPTION_INIT ltc_init +#define ENCRYPTION_CLEANUP ltc_cleanup +#define ENCRYPTION_DECRYPT ltc_decrypt + +#if defined(ENCRYPTION_AES_LTC) + #define CIPHER_NAME "rijndael" + #define CIPHER_DESC rijndael_desc +#elif defined(ENCRYPTION_3DES_LTC) + #define CIPHER_NAME "3des" + #define CIPHER_DESC des3_desc +#endif +#endif + +//------------------------------------------------------------------------------ +// Prototypes +//------------------------------------------------------------------------------ + +#ifdef ONLY_ONE_ENCRYPTION +extern void ltc_init(void); +#endif +extern void ltc_init_AES_CBC(void); +extern void ltc_init_AES_CTR(void); +extern void ltc_init_AES_ECB(void); +extern void ltc_init_3DES_CBC(void); +extern void ltc_init_3DES_CTR(void); +extern void ltc_init_3DES_ECB(void); + +extern void ltc_cleanup(void); +extern void ltc_cleanup_CBC(void); +extern void ltc_cleanup_CTR(void); +extern void ltc_cleanup_ECB(void); + +extern int ltc_decrypt(const unsigned char * cipherText, unsigned char * plainText, unsigned int length); +extern int ltc_decrypt_CBC(const unsigned char * cipherText, unsigned char * plainText, unsigned int length); +extern int ltc_decrypt_CTR(const unsigned char * cipherText, unsigned char * plainText, unsigned int length); +extern int ltc_decrypt_ECB(const unsigned char * cipherText, unsigned char * plainText, unsigned int length); + +#endif // defined(USE_ENCRYPTION) && (defined(ENCRYPTION_AES_LTC) || defined(ENCRYPTION_3DES_LTC)) +#endif // BOOTLOADER_AES_LIBTOMCRYPT_H + + -- cgit v1.2.3