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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 */ |