crc64.cpp

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/*
 * libxcks
 * Copyright (C) 2022 Julien Couot
 *
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or (at your
 * option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
 * License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
//---------------------------------------------------------------------------
#include <sstream>
 
#include "crc64.hpp"
//---------------------------------------------------------------------------
 
using namespace std;
 
 
namespace libxcks
{
// Table used to compute the CRC64 value.
const uint64_t CRC64::crc_table[256] =
{
  UINT64_C(0x0000000000000000), UINT64_C(0x42F0E1EBA9EA3693), UINT64_C(0x85E1C3D753D46D26), UINT64_C(0xC711223CFA3E5BB5), UINT64_C(0x493366450E42ECDF), UINT64_C(0x0BC387AEA7A8DA4C), UINT64_C(0xCCD2A5925D9681F9), UINT64_C(0x8E224479F47CB76A),
  UINT64_C(0x9266CC8A1C85D9BE), UINT64_C(0xD0962D61B56FEF2D), UINT64_C(0x17870F5D4F51B498), UINT64_C(0x5577EEB6E6BB820B), UINT64_C(0xDB55AACF12C73561), UINT64_C(0x99A54B24BB2D03F2), UINT64_C(0x5EB4691841135847), UINT64_C(0x1C4488F3E8F96ED4),
  UINT64_C(0x663D78FF90E185EF), UINT64_C(0x24CD9914390BB37C), UINT64_C(0xE3DCBB28C335E8C9), UINT64_C(0xA12C5AC36ADFDE5A), UINT64_C(0x2F0E1EBA9EA36930), UINT64_C(0x6DFEFF5137495FA3), UINT64_C(0xAAEFDD6DCD770416), UINT64_C(0xE81F3C86649D3285),
  UINT64_C(0xF45BB4758C645C51), UINT64_C(0xB6AB559E258E6AC2), UINT64_C(0x71BA77A2DFB03177), UINT64_C(0x334A9649765A07E4), UINT64_C(0xBD68D2308226B08E), UINT64_C(0xFF9833DB2BCC861D), UINT64_C(0x388911E7D1F2DDA8), UINT64_C(0x7A79F00C7818EB3B),
  UINT64_C(0xCC7AF1FF21C30BDE), UINT64_C(0x8E8A101488293D4D), UINT64_C(0x499B3228721766F8), UINT64_C(0x0B6BD3C3DBFD506B), UINT64_C(0x854997BA2F81E701), UINT64_C(0xC7B97651866BD192), UINT64_C(0x00A8546D7C558A27), UINT64_C(0x4258B586D5BFBCB4),
  UINT64_C(0x5E1C3D753D46D260), UINT64_C(0x1CECDC9E94ACE4F3), UINT64_C(0xDBFDFEA26E92BF46), UINT64_C(0x990D1F49C77889D5), UINT64_C(0x172F5B3033043EBF), UINT64_C(0x55DFBADB9AEE082C), UINT64_C(0x92CE98E760D05399), UINT64_C(0xD03E790CC93A650A),
  UINT64_C(0xAA478900B1228E31), UINT64_C(0xE8B768EB18C8B8A2), UINT64_C(0x2FA64AD7E2F6E317), UINT64_C(0x6D56AB3C4B1CD584), UINT64_C(0xE374EF45BF6062EE), UINT64_C(0xA1840EAE168A547D), UINT64_C(0x66952C92ECB40FC8), UINT64_C(0x2465CD79455E395B),
  UINT64_C(0x3821458AADA7578F), UINT64_C(0x7AD1A461044D611C), UINT64_C(0xBDC0865DFE733AA9), UINT64_C(0xFF3067B657990C3A), UINT64_C(0x711223CFA3E5BB50), UINT64_C(0x33E2C2240A0F8DC3), UINT64_C(0xF4F3E018F031D676), UINT64_C(0xB60301F359DBE0E5),
  UINT64_C(0xDA050215EA6C212F), UINT64_C(0x98F5E3FE438617BC), UINT64_C(0x5FE4C1C2B9B84C09), UINT64_C(0x1D14202910527A9A), UINT64_C(0x93366450E42ECDF0), UINT64_C(0xD1C685BB4DC4FB63), UINT64_C(0x16D7A787B7FAA0D6), UINT64_C(0x5427466C1E109645),
  UINT64_C(0x4863CE9FF6E9F891), UINT64_C(0x0A932F745F03CE02), UINT64_C(0xCD820D48A53D95B7), UINT64_C(0x8F72ECA30CD7A324), UINT64_C(0x0150A8DAF8AB144E), UINT64_C(0x43A04931514122DD), UINT64_C(0x84B16B0DAB7F7968), UINT64_C(0xC6418AE602954FFB),
  UINT64_C(0xBC387AEA7A8DA4C0), UINT64_C(0xFEC89B01D3679253), UINT64_C(0x39D9B93D2959C9E6), UINT64_C(0x7B2958D680B3FF75), UINT64_C(0xF50B1CAF74CF481F), UINT64_C(0xB7FBFD44DD257E8C), UINT64_C(0x70EADF78271B2539), UINT64_C(0x321A3E938EF113AA),
  UINT64_C(0x2E5EB66066087D7E), UINT64_C(0x6CAE578BCFE24BED), UINT64_C(0xABBF75B735DC1058), UINT64_C(0xE94F945C9C3626CB), UINT64_C(0x676DD025684A91A1), UINT64_C(0x259D31CEC1A0A732), UINT64_C(0xE28C13F23B9EFC87), UINT64_C(0xA07CF2199274CA14),
  UINT64_C(0x167FF3EACBAF2AF1), UINT64_C(0x548F120162451C62), UINT64_C(0x939E303D987B47D7), UINT64_C(0xD16ED1D631917144), UINT64_C(0x5F4C95AFC5EDC62E), UINT64_C(0x1DBC74446C07F0BD), UINT64_C(0xDAAD56789639AB08), UINT64_C(0x985DB7933FD39D9B),
  UINT64_C(0x84193F60D72AF34F), UINT64_C(0xC6E9DE8B7EC0C5DC), UINT64_C(0x01F8FCB784FE9E69), UINT64_C(0x43081D5C2D14A8FA), UINT64_C(0xCD2A5925D9681F90), UINT64_C(0x8FDAB8CE70822903), UINT64_C(0x48CB9AF28ABC72B6), UINT64_C(0x0A3B7B1923564425),
  UINT64_C(0x70428B155B4EAF1E), UINT64_C(0x32B26AFEF2A4998D), UINT64_C(0xF5A348C2089AC238), UINT64_C(0xB753A929A170F4AB), UINT64_C(0x3971ED50550C43C1), UINT64_C(0x7B810CBBFCE67552), UINT64_C(0xBC902E8706D82EE7), UINT64_C(0xFE60CF6CAF321874),
  UINT64_C(0xE224479F47CB76A0), UINT64_C(0xA0D4A674EE214033), UINT64_C(0x67C58448141F1B86), UINT64_C(0x253565A3BDF52D15), UINT64_C(0xAB1721DA49899A7F), UINT64_C(0xE9E7C031E063ACEC), UINT64_C(0x2EF6E20D1A5DF759), UINT64_C(0x6C0603E6B3B7C1CA),
  UINT64_C(0xF6FAE5C07D3274CD), UINT64_C(0xB40A042BD4D8425E), UINT64_C(0x731B26172EE619EB), UINT64_C(0x31EBC7FC870C2F78), UINT64_C(0xBFC9838573709812), UINT64_C(0xFD39626EDA9AAE81), UINT64_C(0x3A28405220A4F534), UINT64_C(0x78D8A1B9894EC3A7),
  UINT64_C(0x649C294A61B7AD73), UINT64_C(0x266CC8A1C85D9BE0), UINT64_C(0xE17DEA9D3263C055), UINT64_C(0xA38D0B769B89F6C6), UINT64_C(0x2DAF4F0F6FF541AC), UINT64_C(0x6F5FAEE4C61F773F), UINT64_C(0xA84E8CD83C212C8A), UINT64_C(0xEABE6D3395CB1A19),
  UINT64_C(0x90C79D3FEDD3F122), UINT64_C(0xD2377CD44439C7B1), UINT64_C(0x15265EE8BE079C04), UINT64_C(0x57D6BF0317EDAA97), UINT64_C(0xD9F4FB7AE3911DFD), UINT64_C(0x9B041A914A7B2B6E), UINT64_C(0x5C1538ADB04570DB), UINT64_C(0x1EE5D94619AF4648),
  UINT64_C(0x02A151B5F156289C), UINT64_C(0x4051B05E58BC1E0F), UINT64_C(0x87409262A28245BA), UINT64_C(0xC5B073890B687329), UINT64_C(0x4B9237F0FF14C443), UINT64_C(0x0962D61B56FEF2D0), UINT64_C(0xCE73F427ACC0A965), UINT64_C(0x8C8315CC052A9FF6),
  UINT64_C(0x3A80143F5CF17F13), UINT64_C(0x7870F5D4F51B4980), UINT64_C(0xBF61D7E80F251235), UINT64_C(0xFD913603A6CF24A6), UINT64_C(0x73B3727A52B393CC), UINT64_C(0x31439391FB59A55F), UINT64_C(0xF652B1AD0167FEEA), UINT64_C(0xB4A25046A88DC879),
  UINT64_C(0xA8E6D8B54074A6AD), UINT64_C(0xEA16395EE99E903E), UINT64_C(0x2D071B6213A0CB8B), UINT64_C(0x6FF7FA89BA4AFD18), UINT64_C(0xE1D5BEF04E364A72), UINT64_C(0xA3255F1BE7DC7CE1), UINT64_C(0x64347D271DE22754), UINT64_C(0x26C49CCCB40811C7),
  UINT64_C(0x5CBD6CC0CC10FAFC), UINT64_C(0x1E4D8D2B65FACC6F), UINT64_C(0xD95CAF179FC497DA), UINT64_C(0x9BAC4EFC362EA149), UINT64_C(0x158E0A85C2521623), UINT64_C(0x577EEB6E6BB820B0), UINT64_C(0x906FC95291867B05), UINT64_C(0xD29F28B9386C4D96),
  UINT64_C(0xCEDBA04AD0952342), UINT64_C(0x8C2B41A1797F15D1), UINT64_C(0x4B3A639D83414E64), UINT64_C(0x09CA82762AAB78F7), UINT64_C(0x87E8C60FDED7CF9D), UINT64_C(0xC51827E4773DF90E), UINT64_C(0x020905D88D03A2BB), UINT64_C(0x40F9E43324E99428),
  UINT64_C(0x2CFFE7D5975E55E2), UINT64_C(0x6E0F063E3EB46371), UINT64_C(0xA91E2402C48A38C4), UINT64_C(0xEBEEC5E96D600E57), UINT64_C(0x65CC8190991CB93D), UINT64_C(0x273C607B30F68FAE), UINT64_C(0xE02D4247CAC8D41B), UINT64_C(0xA2DDA3AC6322E288),
  UINT64_C(0xBE992B5F8BDB8C5C), UINT64_C(0xFC69CAB42231BACF), UINT64_C(0x3B78E888D80FE17A), UINT64_C(0x7988096371E5D7E9), UINT64_C(0xF7AA4D1A85996083), UINT64_C(0xB55AACF12C735610), UINT64_C(0x724B8ECDD64D0DA5), UINT64_C(0x30BB6F267FA73B36),
  UINT64_C(0x4AC29F2A07BFD00D), UINT64_C(0x08327EC1AE55E69E), UINT64_C(0xCF235CFD546BBD2B), UINT64_C(0x8DD3BD16FD818BB8), UINT64_C(0x03F1F96F09FD3CD2), UINT64_C(0x41011884A0170A41), UINT64_C(0x86103AB85A2951F4), UINT64_C(0xC4E0DB53F3C36767),
  UINT64_C(0xD8A453A01B3A09B3), UINT64_C(0x9A54B24BB2D03F20), UINT64_C(0x5D45907748EE6495), UINT64_C(0x1FB5719CE1045206), UINT64_C(0x919735E51578E56C), UINT64_C(0xD367D40EBC92D3FF), UINT64_C(0x1476F63246AC884A), UINT64_C(0x568617D9EF46BED9),
  UINT64_C(0xE085162AB69D5E3C), UINT64_C(0xA275F7C11F7768AF), UINT64_C(0x6564D5FDE549331A), UINT64_C(0x279434164CA30589), UINT64_C(0xA9B6706FB8DFB2E3), UINT64_C(0xEB46918411358470), UINT64_C(0x2C57B3B8EB0BDFC5), UINT64_C(0x6EA7525342E1E956),
  UINT64_C(0x72E3DAA0AA188782), UINT64_C(0x30133B4B03F2B111), UINT64_C(0xF7021977F9CCEAA4), UINT64_C(0xB5F2F89C5026DC37), UINT64_C(0x3BD0BCE5A45A6B5D), UINT64_C(0x79205D0E0DB05DCE), UINT64_C(0xBE317F32F78E067B), UINT64_C(0xFCC19ED95E6430E8),
  UINT64_C(0x86B86ED5267CDBD3), UINT64_C(0xC4488F3E8F96ED40), UINT64_C(0x0359AD0275A8B6F5), UINT64_C(0x41A94CE9DC428066), UINT64_C(0xCF8B0890283E370C), UINT64_C(0x8D7BE97B81D4019F), UINT64_C(0x4A6ACB477BEA5A2A), UINT64_C(0x089A2AACD2006CB9),
  UINT64_C(0x14DEA25F3AF9026D), UINT64_C(0x562E43B4931334FE), UINT64_C(0x913F6188692D6F4B), UINT64_C(0xD3CF8063C0C759D8), UINT64_C(0x5DEDC41A34BBEEB2), UINT64_C(0x1F1D25F19D51D821), UINT64_C(0xD80C07CD676F8394), UINT64_C(0x9AFCE626CE85B507)
};
//---------------------------------------------------------------------------
 
 
/*
 * Default constructor.
 */
CRC64::CRC64()
{
  reset();
}
//---------------------------------------------------------------------------
 
 
/*
 * Resets the CRC64 to initial value.
 */
void CRC64::reset()
{
  crc64 = UINT64_C(0);
}
//---------------------------------------------------------------------------
 
 
/*
 * Returns the CRC64 value.
 */
uint64_t CRC64::getUint64Value() const
{
  return crc64;
}
//---------------------------------------------------------------------------
 
 
/*
 * Returns the CRC64 value in the first 8 bytes of the given address.
 */
uint8_t* CRC64::getValue(uint8_t* buffer) const
{
  *(reinterpret_cast<uint64_t*>(buffer)) = swapOnLE(getUint64Value());
  return buffer;
}
//---------------------------------------------------------------------------
 
 
/*
 * Returns the checksum value in a string.
 *
 * @param  hexInUpperCase  If <CODE>true</CODE> the hexadecimal letters will
 *                         be in uppercase.
 * @return The current checksum value.
 */
string CRC64::toString(const bool hexInUpperCase) const
{
  ostringstream ss;
  ss.fill('0');
  ss.width(16);
 
  if (hexInUpperCase)
    ss << uppercase << hex << getUint64Value();
  else
    ss << hex << getUint64Value();
 
  return ss.str();
}
//---------------------------------------------------------------------------
 
 
/*
 * Updates the CRC64 with specified array of bytes.
 */
void CRC64::update(const uint8_t* buf, size_t len)
{
  for (size_t a = 0; a < len; a++)
        crc64 = (crc64 << 8) ^ crc_table[((crc64 >> 56) ^ static_cast<uint64_t>(*buf++)) & UINT64_C(0x00000000000000FF) ];
}
//---------------------------------------------------------------------------
 
 
ArrayString CRC64::getAlternativeNames()
{
  return ArrayString{ "CRC-64" };
}
//---------------------------------------------------------------------------
}  // namespace libxcks
//---------------------------------------------------------------------------