lib/crc64.c

   1 /* SPDX-License-Identifier: MIT */
   2 /*
   3  * Library: libcrc
   4  * File:    src/crc64.c
   5  * Author:  Lammert Bies
   6  *
   7  * This file is licensed under the MIT License as stated below
   8  *
   9  * Copyright (c) 2016 Lammert Bies
  10  *
  11  * Permission is hereby granted, free of charge, to any person obtaining a copy
  12  * of this software and associated documentation files (the "Software"), to deal
  13  * in the Software without restriction, including without limitation the rights
  14  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  15  * copies of the Software, and to permit persons to whom the Software is
  16  * furnished to do so, subject to the following conditions:
  17  *
  18  * The above copyright notice and this permission notice shall be included in all
  19  * copies or substantial portions of the Software.
  20  *
  21  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  22  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  23  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  24  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  25  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  26  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  27  * SOFTWARE.
  28  *
  29  * Description
  30  * -----------
  31  * The source file contains the routines which are needed to
  32  * calculate a 64 bit CRC value of a sequence of bytes.
  33  */
  34
  35 #include <stdbool.h>
  36 #include <stdlib.h>
  37
  38 #include "crc64.h"
  39
  40 #define         CRC_START_64_ECMA       0x0000000000000000ull
  41 #define         CRC_START_64_WE         0xFFFFFFFFFFFFFFFFull
  42
  43 const uint64_t crc_tab64[256] = {
  44         0x0000000000000000ull,
  45         0x42F0E1EBA9EA3693ull,
  46         0x85E1C3D753D46D26ull,
  47         0xC711223CFA3E5BB5ull,
  48         0x493366450E42ECDFull,
  49         0x0BC387AEA7A8DA4Cull,
  50         0xCCD2A5925D9681F9ull,
  51         0x8E224479F47CB76Aull,
  52         0x9266CC8A1C85D9BEull,
  53         0xD0962D61B56FEF2Dull,
  54         0x17870F5D4F51B498ull,
  55         0x5577EEB6E6BB820Bull,
  56         0xDB55AACF12C73561ull,
  57         0x99A54B24BB2D03F2ull,
  58         0x5EB4691841135847ull,
  59         0x1C4488F3E8F96ED4ull,
  60         0x663D78FF90E185EFull,
  61         0x24CD9914390BB37Cull,
  62         0xE3DCBB28C335E8C9ull,
  63         0xA12C5AC36ADFDE5Aull,
  64         0x2F0E1EBA9EA36930ull,
  65         0x6DFEFF5137495FA3ull,
  66         0xAAEFDD6DCD770416ull,
  67         0xE81F3C86649D3285ull,
  68         0xF45BB4758C645C51ull,
  69         0xB6AB559E258E6AC2ull,
  70         0x71BA77A2DFB03177ull,
  71         0x334A9649765A07E4ull,
  72         0xBD68D2308226B08Eull,
  73         0xFF9833DB2BCC861Dull,
  74         0x388911E7D1F2DDA8ull,
  75         0x7A79F00C7818EB3Bull,
  76         0xCC7AF1FF21C30BDEull,
  77         0x8E8A101488293D4Dull,
  78         0x499B3228721766F8ull,
  79         0x0B6BD3C3DBFD506Bull,
  80         0x854997BA2F81E701ull,
  81         0xC7B97651866BD192ull,
  82         0x00A8546D7C558A27ull,
  83         0x4258B586D5BFBCB4ull,
  84         0x5E1C3D753D46D260ull,
  85         0x1CECDC9E94ACE4F3ull,
  86         0xDBFDFEA26E92BF46ull,
  87         0x990D1F49C77889D5ull,
  88         0x172F5B3033043EBFull,
  89         0x55DFBADB9AEE082Cull,
  90         0x92CE98E760D05399ull,
  91         0xD03E790CC93A650Aull,
  92         0xAA478900B1228E31ull,
  93         0xE8B768EB18C8B8A2ull,
  94         0x2FA64AD7E2F6E317ull,
  95         0x6D56AB3C4B1CD584ull,
  96         0xE374EF45BF6062EEull,
  97         0xA1840EAE168A547Dull,
  98         0x66952C92ECB40FC8ull,
  99         0x2465CD79455E395Bull,
 100         0x3821458AADA7578Full,
 101         0x7AD1A461044D611Cull,
 102         0xBDC0865DFE733AA9ull,
 103         0xFF3067B657990C3Aull,
 104         0x711223CFA3E5BB50ull,
 105         0x33E2C2240A0F8DC3ull,
 106         0xF4F3E018F031D676ull,
 107         0xB60301F359DBE0E5ull,
 108         0xDA050215EA6C212Full,
 109         0x98F5E3FE438617BCull,
 110         0x5FE4C1C2B9B84C09ull,
 111         0x1D14202910527A9Aull,
 112         0x93366450E42ECDF0ull,
 113         0xD1C685BB4DC4FB63ull,
 114         0x16D7A787B7FAA0D6ull,
 115         0x5427466C1E109645ull,
 116         0x4863CE9FF6E9F891ull,
 117         0x0A932F745F03CE02ull,
 118         0xCD820D48A53D95B7ull,
 119         0x8F72ECA30CD7A324ull,
 120         0x0150A8DAF8AB144Eull,
 121         0x43A04931514122DDull,
 122         0x84B16B0DAB7F7968ull,
 123         0xC6418AE602954FFBull,
 124         0xBC387AEA7A8DA4C0ull,
 125         0xFEC89B01D3679253ull,
 126         0x39D9B93D2959C9E6ull,
 127         0x7B2958D680B3FF75ull,
 128         0xF50B1CAF74CF481Full,
 129         0xB7FBFD44DD257E8Cull,
 130         0x70EADF78271B2539ull,
 131         0x321A3E938EF113AAull,
 132         0x2E5EB66066087D7Eull,
 133         0x6CAE578BCFE24BEDull,
 134         0xABBF75B735DC1058ull,
 135         0xE94F945C9C3626CBull,
 136         0x676DD025684A91A1ull,
 137         0x259D31CEC1A0A732ull,
 138         0xE28C13F23B9EFC87ull,
 139         0xA07CF2199274CA14ull,
 140         0x167FF3EACBAF2AF1ull,
 141         0x548F120162451C62ull,
 142         0x939E303D987B47D7ull,
 143         0xD16ED1D631917144ull,
 144         0x5F4C95AFC5EDC62Eull,
 145         0x1DBC74446C07F0BDull,
 146         0xDAAD56789639AB08ull,
 147         0x985DB7933FD39D9Bull,
 148         0x84193F60D72AF34Full,
 149         0xC6E9DE8B7EC0C5DCull,
 150         0x01F8FCB784FE9E69ull,
 151         0x43081D5C2D14A8FAull,
 152         0xCD2A5925D9681F90ull,
 153         0x8FDAB8CE70822903ull,
 154         0x48CB9AF28ABC72B6ull,
 155         0x0A3B7B1923564425ull,
 156         0x70428B155B4EAF1Eull,
 157         0x32B26AFEF2A4998Dull,
 158         0xF5A348C2089AC238ull,
 159         0xB753A929A170F4ABull,
 160         0x3971ED50550C43C1ull,
 161         0x7B810CBBFCE67552ull,
 162         0xBC902E8706D82EE7ull,
 163         0xFE60CF6CAF321874ull,
 164         0xE224479F47CB76A0ull,
 165         0xA0D4A674EE214033ull,
 166         0x67C58448141F1B86ull,
 167         0x253565A3BDF52D15ull,
 168         0xAB1721DA49899A7Full,
 169         0xE9E7C031E063ACECull,
 170         0x2EF6E20D1A5DF759ull,
 171         0x6C0603E6B3B7C1CAull,
 172         0xF6FAE5C07D3274CDull,
 173         0xB40A042BD4D8425Eull,
 174         0x731B26172EE619EBull,
 175         0x31EBC7FC870C2F78ull,
 176         0xBFC9838573709812ull,
 177         0xFD39626EDA9AAE81ull,
 178         0x3A28405220A4F534ull,
 179         0x78D8A1B9894EC3A7ull,
 180         0x649C294A61B7AD73ull,
 181         0x266CC8A1C85D9BE0ull,
 182         0xE17DEA9D3263C055ull,
 183         0xA38D0B769B89F6C6ull,
 184         0x2DAF4F0F6FF541ACull,
 185         0x6F5FAEE4C61F773Full,
 186         0xA84E8CD83C212C8Aull,
 187         0xEABE6D3395CB1A19ull,
 188         0x90C79D3FEDD3F122ull,
 189         0xD2377CD44439C7B1ull,
 190         0x15265EE8BE079C04ull,
 191         0x57D6BF0317EDAA97ull,
 192         0xD9F4FB7AE3911DFDull,
 193         0x9B041A914A7B2B6Eull,
 194         0x5C1538ADB04570DBull,
 195         0x1EE5D94619AF4648ull,
 196         0x02A151B5F156289Cull,
 197         0x4051B05E58BC1E0Full,
 198         0x87409262A28245BAull,
 199         0xC5B073890B687329ull,
 200         0x4B9237F0FF14C443ull,
 201         0x0962D61B56FEF2D0ull,
 202         0xCE73F427ACC0A965ull,
 203         0x8C8315CC052A9FF6ull,
 204         0x3A80143F5CF17F13ull,
 205         0x7870F5D4F51B4980ull,
 206         0xBF61D7E80F251235ull,
 207         0xFD913603A6CF24A6ull,
 208         0x73B3727A52B393CCull,
 209         0x31439391FB59A55Full,
 210         0xF652B1AD0167FEEAull,
 211         0xB4A25046A88DC879ull,
 212         0xA8E6D8B54074A6ADull,
 213         0xEA16395EE99E903Eull,
 214         0x2D071B6213A0CB8Bull,
 215         0x6FF7FA89BA4AFD18ull,
 216         0xE1D5BEF04E364A72ull,
 217         0xA3255F1BE7DC7CE1ull,
 218         0x64347D271DE22754ull,
 219         0x26C49CCCB40811C7ull,
 220         0x5CBD6CC0CC10FAFCull,
 221         0x1E4D8D2B65FACC6Full,
 222         0xD95CAF179FC497DAull,
 223         0x9BAC4EFC362EA149ull,
 224         0x158E0A85C2521623ull,
 225         0x577EEB6E6BB820B0ull,
 226         0x906FC95291867B05ull,
 227         0xD29F28B9386C4D96ull,
 228         0xCEDBA04AD0952342ull,
 229         0x8C2B41A1797F15D1ull,
 230         0x4B3A639D83414E64ull,
 231         0x09CA82762AAB78F7ull,
 232         0x87E8C60FDED7CF9Dull,
 233         0xC51827E4773DF90Eull,
 234         0x020905D88D03A2BBull,
 235         0x40F9E43324E99428ull,
 236         0x2CFFE7D5975E55E2ull,
 237         0x6E0F063E3EB46371ull,
 238         0xA91E2402C48A38C4ull,
 239         0xEBEEC5E96D600E57ull,
 240         0x65CC8190991CB93Dull,
 241         0x273C607B30F68FAEull,
 242         0xE02D4247CAC8D41Bull,
 243         0xA2DDA3AC6322E288ull,
 244         0xBE992B5F8BDB8C5Cull,
 245         0xFC69CAB42231BACFull,
 246         0x3B78E888D80FE17Aull,
 247         0x7988096371E5D7E9ull,
 248         0xF7AA4D1A85996083ull,
 249         0xB55AACF12C735610ull,
 250         0x724B8ECDD64D0DA5ull,
 251         0x30BB6F267FA73B36ull,
 252         0x4AC29F2A07BFD00Dull,
 253         0x08327EC1AE55E69Eull,
 254         0xCF235CFD546BBD2Bull,
 255         0x8DD3BD16FD818BB8ull,
 256         0x03F1F96F09FD3CD2ull,
 257         0x41011884A0170A41ull,
 258         0x86103AB85A2951F4ull,
 259         0xC4E0DB53F3C36767ull,
 260         0xD8A453A01B3A09B3ull,
 261         0x9A54B24BB2D03F20ull,
 262         0x5D45907748EE6495ull,
 263         0x1FB5719CE1045206ull,
 264         0x919735E51578E56Cull,
 265         0xD367D40EBC92D3FFull,
 266         0x1476F63246AC884Aull,
 267         0x568617D9EF46BED9ull,
 268         0xE085162AB69D5E3Cull,
 269         0xA275F7C11F7768AFull,
 270         0x6564D5FDE549331Aull,
 271         0x279434164CA30589ull,
 272         0xA9B6706FB8DFB2E3ull,
 273         0xEB46918411358470ull,
 274         0x2C57B3B8EB0BDFC5ull,
 275         0x6EA7525342E1E956ull,
 276         0x72E3DAA0AA188782ull,
 277         0x30133B4B03F2B111ull,
 278         0xF7021977F9CCEAA4ull,
 279         0xB5F2F89C5026DC37ull,
 280         0x3BD0BCE5A45A6B5Dull,
 281         0x79205D0E0DB05DCEull,
 282         0xBE317F32F78E067Bull,
 283         0xFCC19ED95E6430E8ull,
 284         0x86B86ED5267CDBD3ull,
 285         0xC4488F3E8F96ED40ull,
 286         0x0359AD0275A8B6F5ull,
 287         0x41A94CE9DC428066ull,
 288         0xCF8B0890283E370Cull,
 289         0x8D7BE97B81D4019Full,
 290         0x4A6ACB477BEA5A2Aull,
 291         0x089A2AACD2006CB9ull,
 292         0x14DEA25F3AF9026Dull,
 293         0x562E43B4931334FEull,
 294         0x913F6188692D6F4Bull,
 295         0xD3CF8063C0C759D8ull,
 296         0x5DEDC41A34BBEEB2ull,
 297         0x1F1D25F19D51D821ull,
 298         0xD80C07CD676F8394ull,
 299         0x9AFCE626CE85B507ull
 300 };
 301
 302
 303 /*
 304  * uint64_t crc_64_ecma( const unsigned char *input_str, size_t num_bytes );
 305  *
 306  * The function crc_64_ecma() calculates in one pass the ECMA 64 bit CRC value
 307  * for a byte string that is passed to the function together with a parameter
 308  * indicating the length.
 309  */
 310
 311 uint64_t ul_crc64_ecma( const unsigned char *input_str, size_t num_bytes ) {
 312
 313         uint64_t crc;
 314         const unsigned char *ptr;
 315         size_t a;
 316
 317         crc = CRC_START_64_ECMA;
 318         ptr = input_str;
 319
 320         if ( ptr != NULL ) for (a=0; a<num_bytes; a++) {
 321
 322                 crc = (crc << 8) ^ crc_tab64[ ((crc >> 56) ^ (uint64_t) *ptr++) & 0x00000000000000FFull ];
 323         }
 324
 325         return crc;
 326
 327 }  /* crc_64_ecma */
 328
 329 /*
 330  * uint64_t ul_crc64_we( const unsigned char *input_str, size_t num_bytes );
 331  *
 332  * The function crc_64_we() calculates in one pass the CRC64-WE 64 bit CRC
 333  * value for a byte string that is passed to the function together with a
 334  * parameter indicating the length.
 335  */
 336
 337 uint64_t ul_crc64_we( const unsigned char *input_str, size_t num_bytes ) {
 338
 339         uint64_t crc;
 340         const unsigned char *ptr;
 341         size_t a;
 342
 343         crc = CRC_START_64_WE;
 344         ptr = input_str;
 345
 346         if ( ptr != NULL ) for (a=0; a<num_bytes; a++) {
 347
 348                 crc = (crc << 8) ^ crc_tab64[ ((crc >> 56) ^ (uint64_t) *ptr++) & 0x00000000000000FFull ];
 349         }
 350
 351         return crc ^ 0xFFFFFFFFFFFFFFFFull;
 352
 353 }  /* crc_64_we */
 354
 355 /*
 356  * uint64_t ul_update_crc64( uint64_t crc, unsigned char c );
 357  *
 358  * The function update_crc_64() calculates a new CRC-64 value based on the
 359  * previous value of the CRC and the next byte of the data to be checked.
 360  */
 361
 362 uint64_t ul_update_crc64( uint64_t crc, unsigned char c ) {
 363
 364         return (crc << 8) ^ crc_tab64[ ((crc >> 56) ^ (uint64_t) c) & 0x00000000000000FFull ];
 365
 366 }  /* update_crc_64 */