threeeye
bc1d038eac
Squashed backup commit (no shallow-clone history issues) of xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2 branch, upstream commit 9eece662e) plus all fixes applied to get everpal_defconfig building clean against a modern (GCC 15.2.0) toolchain -- see the previous commit message on the lineage-23.2 branch (also in this repo history is not available here since this is a squashed snapshot; full incremental history lives in the local DL380 checkout and the upstream GitHub remote). Upstream: https://github.com/xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2)
109 lines
3.5 KiB
C
109 lines
3.5 KiB
C
/*******************************************************************************
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* Copyright (C) 2017 Maxim Integrated Products, Inc., All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
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* OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Except as contained in this notice, the name of Maxim Integrated
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* Products, Inc. shall not be used except as stated in the Maxim Integrated
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* Products, Inc. Branding Policy.
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*
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* The mere transfer of this software does not imply any licenses
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* of trade secrets, proprietary technology, copyrights, patents,
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* trademarks, maskwork rights, or any other form of intellectual
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* property whatsoever. Maxim Integrated Products, Inc. retains all
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* ownership rights.
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*******************************************************************************
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*/
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// SHA3_HMAC - HMAC using SHA3-256
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#include "ucl_sha3.h"
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#include <linux/string.h>
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#define SHA3_256_HMAC
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#include "sha384_software.h"
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//---------------------------------------------------------------------------
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/// Compute HMAC using SHA3-256.
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///
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/// @param[in] key
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/// buffer for key
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/// @param[in] ken_len
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/// length of key
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/// @param[in] message
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/// buffer for message
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/// @param[in] msg_len
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/// length of message
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/// @param[out] mac
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/// 32 byte output mac
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///
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/// Restrictions:
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/// Key length limited to 32 bytes.
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/// Message Length is limited to 512 bytes.
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///
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/// @return
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/// TRUE - command successful @n
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/// FALSE - command failed
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///
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int sha3_256_hmac(unsigned char *key, int key_len, unsigned char *message, int msg_len, unsigned char *mac)
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{
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int i;
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unsigned char thash[256];
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unsigned char tmac[256];
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unsigned char cat_input_thash[1024];
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unsigned char cat_input_final[1024];
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int blocksize = 136;
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int hashsize = 32;
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unsigned char opad[136];
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unsigned char ipad[136];
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memset(opad, 0x5C, blocksize);
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memset(ipad, 0x36, blocksize);
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// Check to see if key is larger then blocksize
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if (key_len > blocksize)
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return 0; // Not supported
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// check for blocks too big
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if (msg_len > 512)
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return 0;
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// Loop through bytes of ipad/opad and XOR with key
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for (i = 0; i < key_len; i++) {
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// XOR ipad with key
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ipad[i] ^= key[i];
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// XOR opad with key
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opad[i] ^= key[i];
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}
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// thash = hash(ipad || message)
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memcpy(cat_input_thash, ipad, blocksize);
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memcpy(&cat_input_thash[blocksize], message, msg_len);
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ucl_sha3_256(thash, cat_input_thash, blocksize + msg_len);
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// return hash(opad || thash)
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memcpy(cat_input_final, opad, blocksize);
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memcpy(&cat_input_final[blocksize], thash, hashsize);
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ucl_sha3_256(tmac, cat_input_final, blocksize + hashsize);
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memcpy(mac, tmac, hashsize);
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return 1;
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}
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