Package: libscrc
libscrc is a library for calculating CRC3 CRC4 CRC5 CRC6 CRC7 CRC8 CRC16 CRC24 CRC32 CRC64 CRC82.CRCxCRC8CRC16CRC24CRC32CRC64CRC3-GSMINTELMODBUSBLEFSCGO-ISOCRC3-ROHCBCCIBMOPENPGPCRC32ECMA182CRC4-ITULRCXMODEMLTE-AMPEG2WECRC5-ITUMAXIM8CCITTLTE-BADLER32XZ64CRC5-EPCROHCKERMITOS9FLETCHER32CRC5-USBITU8MCRF4XXFLEXRAY-APOSIXCRC6-ITUCRC8SICKFLEXRAY-BBZIP2CRC6-GSMSUM8DNPINTERLAKENJAMCRCCRC6-DARCFLETCHER8X25CRC24AUTOSARCRC7SMBUSUSBC / ISCSICRC7-MMCAUTOSARMAXIM16D/BASE91-DCRC7-UMTSLTEDECT(R/X)Q / AIXMCRC7-ROHCSAE-J1850TCP/UDPXFERI-CODECDMA2000CKSUMCAN15GSM-AFLETCHER16XZ32CAN17NRSC-5EPC16AAL5CAN21WCDMAPROFIBUSISO-HDLCBLUETOOTHBUYPASSPKZIPCRC10-ATMDVB-S2GENIBUSADCCPCRC13-BBCEBUGSM16V-42MPT1327DARCRIELLOSTM32CDMA2000MIFAREOPENSAFETYECMXFLIN1.3EN13757LIN2.xCMSCRC30-CDMAID8PHILIPSDARC82NMEAMODBUS-ASCInstallationCompile and install the library:pip3 install libscrcor:python3 setup.py build
python3 setup.py installYou will need the administrative privileges to execute the last command.Cross compile and install the library:# vim setup.cfg
universal=1
plat-name=linux_armv7l

export CROSS_COMPILE=arm-linux-gnueabihf-
export CC='${CROSS_COMPILE}gcc -pthread'
export LDSHARED='${CROSS_COMPILE}gcc -shared'
export CFLAGS='-I/usr/include/python3.5m -I/usr/include/'

python3 setup.py build
# gcc version 6.2.1 20161016 (Linaro GCC 6.2-2016.11)After installation you can run unit tests to make sure that the library works fine.  Execute:# python3 -m libscrc.test.modbus
# python3 -m libscrc.test.crc8
# python3 -m libscrc.test.crcx
# python3 -m libscrc.test.canx
# python3 -m libscrc.test.crc16
# python3 -m libscrc.test.crc24
# python3 -m libscrc.test.crc32
# python3 -m libscrc.test.crc64UsageIn Python 3:import libscrc
crc16 = libscrc.modbus(b'1234')       # Calculate ASCII of modbus(rtu)
crc16 = libscrc.modbus(b'\x01\x02')   # Calculate HEX of modbus(rtu)
crc16 = libscrc.modbus(bytearray( [ 0x01, 0x02 ] ))You can also calculate CRC gradually( v1.4+ ):import libscrc
crc16 = libscrc.xmodem(b'1234')
crc16 = libscrc.xmodem(b'5678', crc16)ExampleCRCx::crc3 = libscrc.gsm3(b’1234’)
crc3 = libscrc.rohc3(b’1234’)
crc4 = libscrc.itu4(b’1234’)
crc4 = libscrc.g_704(b’1234’)
crc4 = libscrc.interlaken4(b’1234’)
crc5 = libscrc.itu5(b’1234’)
crc5 = libscrc.epc(b’1234’)
crc5 = libscrc.usb5(b’1234’)
crc6 = libscrc.itu6(b’1234’)
crc6 = libscrc.darc6(b’1234’)
crc7 = libscrc.mmc(b’1234’)
crc7 = libscrc.crc7(b’1234’)
crc7 = libscrc.umts7(b’1234’)
crc7 = libscrc.rohc7(b’1234’)crc10 = libscrc.atm10(b’1234’)
crc10 = libscrc.gsm10(b’1234’)
crc10 = libscrc.crc10_cdma2000(b’1234’)
crc11 = libscrc.umts11(b’1234’)
crc11 = libscrc.flexray11(b’1234’)
crc12 = libscrc.umts12(b’1234’)
crc12 = libscrc.crc12_3gpp(b’1234’)
crc12 = libscrc.dect12(b’1234’)
crc12 = libscrc.crc12(b’1234’)
crc12 = libscrc.gsm12(b’1234’)
crc12 = libscrc.crc12_cdma2000(b’1234’)
crc13 = libscrc.bbc13(b’1234’)
crc14 = libscrc.darc14(b’1234’)
crc15 = libscrc.mpt1327(b’1234’)crc15 = libscrc.can15(b’1234’)
crc17 = libscrc.can17(b’1234’)
crc21 = libscrc.can21(b’1234’)crc30 = libscrc.cdma(b’1234’)
crc31 = libscrc.philips(b’1234’)crc40 = libscrc.gsm40(b’1234’)crc82 = libscrc.darc82(b’1234’)CRC8::crc8 = libscrc.intel(b’1234’)
crc8 = libscrc.bcc(b’1234’)
crc8 = libscrc.lrc(b’1234’)
crc8 = libscrc.maxim8(b’1234’)
crc8 = libscrc.rohc(b’1234’)
crc8 = libscrc.itu8(b’1234’)
crc8 = libscrc.crc8(b’1234’)
crc8 = libscrc.smbus(b’1234’)
crc8 = libscrc.autosar8(b’1234’)
crc8 = libscrc.lte8(b’1234’)
crc8 = libscrc.sae_j1850(b’1234’)
crc8 = libscrc.icode8(b’1234’)
crc8 = libscrc.gsm8_a(b’1234’)
crc8 = libscrc.nrsc_5(b’1234’)
crc8 = libscrc.wcdma8(b’1234’)
crc8 = libscrc.bluetooth(b’1234’)
crc8 = libscrc.dvb_s2(b’1234’)
crc8 = libscrc.ebu8(b’1234’)
crc8 = libscrc.darc8(b’1234’)
crc8 = libscrc.opensafety8(b’1234’)
crc8 = libscrc.i432_1(b’1234’)
crc8 = libscrc.mifare_mad(b’1234’)
crc8 = libscrc.tech_3250(b’1234’)
crc8 = libscrc.aes8(b’1234’)
crc8 = libscrc.lin(bytes([0x15, 0x5B, 0x67]))
crc8 = libscrc.lin2x(bytes([0x15, 0x5B, 0x67, 0x72, 0xAF, 0x5B]))crc8 = libscrc.id8(b’21020020210229117’)      # ID check code of China
crc8 = libscrc.nmea(b’$PFEC,GPint,RMC06*’)    # National Marine Electronics Association
crc8 = libscrc.modbus_asc(b’010300010001’)    # Modbus(ASCII) checksum. return value is bytes (b’FA’)CRC16::crc16 = libscrc.ibm(b’1234’)            # poly=0xA001 (default Reversed)
crc16 = libscrc.ibm(b’1234’, 0x8005)    # poly=0x8005 (Normal)
crc16 = libscrc.modbus(b’1234’)         # Modbus(RTU) checksum
crc16 = libscrc.xmodem(b’1234’)
crc16 = libscrc.zmodem(b’1234’)
crc16 = libscrc.ccitt(b’1234’)
crc16 = libscrc.ccitt_aug(b’1234’)
crc16 = libscrc.ccitt_true(b’1234’)
crc16 = libscrc.ccitt_false(b’1234’)
crc16 = libscrc.kermit(b’1234’)
crc16 = libscrc.mcrf4xx(b’1234’)
crc16 = libscrc.sick(b’1234’)
crc16 = libscrc.dnp(b’1234’)
crc16 = libscrc.x25(b’1234’)
crc16 = libscrc.usb16(b’1234’)
crc16 = libscrc.maxim16(b’1234’)
crc16 = libscrc.dect_r(b’1234’)
crc16 = libscrc.dect_x(b’1234’)data  = b’x45x00x00x3cx00x00x00x00x40x11x00x00xc0xa8x2bxc3x08x08x08x08x11’
crc16 = libscrc.tcp( data )             # 13933
crc16 = libscrc.udp( data )             # 13933crc16 = libscrc.epc16(b’1234’)          # RFID EPC(CRC16-PC-EPC)
crc16 = libscrc.profibus(b’1234’)
crc16 = libscrc.buypass(b’1234’)
crc16 = libscrc.genibus(b’1234’)
crc16 = libscrc.gsm16(b’1234’)
crc16 = libscrc.riello(b’1234’)crc16 = libscrc.crc16_a(b’1234’)
crc16 = libscrc.cdma2000(b’1234’)
crc16 = libscrc.teledisk(b’1234’)
crc16 = libscrc.tms37157(b’1234’)
crc16 = libscrc.en13757(b’1234’)
crc16 = libscrc.t10_dif(b’1234’)
crc16 = libscrc.dds_110(b’1234’)
crc16 = libscrc.lj1200(b’1234’)
crc16 = libscrc.opensafety_a(b’1234’)
crc16 = libscrc.opensafety_b(b’1234’)crc16 = libscrc.arc(b’1234’)
crc16 = libscrc.lha(b’1234’)
crc16 = libscrc.cms(b’1234’)
crc16 = libscrc.darc(b’1234’)
crc16 = libscrc.epc_c1g2(b’1234’)
crc16 = libscrc.icode16(b’1234’)
crc16 = libscrc.ibm_3740(b’1234’)
crc16 = libscrc.autosar16(b’1234’)
crc16 = libscrc.ibm_sdlc(b’1234’)
crc16 = libscrc.iso_hdlc16(b’1234’)
crc16 = libscrc.iec14443_3_b(b’1234’)
crc16 = libscrc.iec14443_3_a(b’1234’)
crc16 = libscrc.v41_lsb(b’1234’)
crc16 = libscrc.v41_msb(b’1234’)
crc16 = libscrc.spi_fujitsu(b’1234’)
crc16 = libscrc.umts(b’1234’)
crc16 = libscrc.verifone(b’1234’)
crc16 = libscrc.acorn(b’1234’)
crc16 = libscrc.lte16(b’1234’)
crc16 = libscrc.nrsc5(b’1234’)CRC24::crc24 = libscrc.ble(b’1234’)
crc24 = libscrc.flexraya(b’1234’)
crc24 = libscrc.flexrayb(b’1234’)
crc24 = libscrc.openpgp(b’1234’)
crc24 = libscrc.lte_a(b’1234’)
crc24 = libscrc.lte_b(b’1234’)
crc24 = libscrc.os9(b’1234’)
crc24 = libscrc.interlaken(b’1234’)
crc24 = libscrc.crc24(b’1234’)CRC32::crc32 = libscrc.fsc(b’1234’)            # Ethernet frame sequence (FSC)
crc32 = libscrc.mpeg2(b’1234’)          # MPEG2
crc32 = libscrc.crc32(b’1234’)          # WinRAR, File
crc32 = libscrc.posix(b’1234’)
crc32 = libscrc.bzip2(b’1234’)
crc32 = libscrc.jamcrc(b’1234’)
crc32 = libscrc.autosar(b’1234’)
crc32 = libscrc.crc32_c(b’1234’)
crc32 = libscrc.crc32_d(b’1234’)
crc32 = libscrc.crc32_q(b’1234’)
crc32 = libscrc.xfer(b’1234’)
crc32 = libscrc.aixm(b’1234’)
crc32 = libscrc.base91_d(b’1234’)
crc32 = libscrc.cksum(b’1234’)
crc32 = libscrc.base91_c(b’1234’)
crc32 = libscrc.iscsi(b’1234’)
crc32 = libscrc.iso_hdlc(b’1234’)
crc32 = libscrc.xz32(b’1234’)
crc32 = libscrc.pkzip(b’1234’)
crc32 = libscrc.adccp(b’1234’)
crc32 = libscrc.v_42(b’1234’)
crc32 = libscrc.aal5(b’1234’)
crc32 = libscrc.stm32(b’1234’)        # STM32 hardware calculate CRC32
crc32 = libscrc.ecmxf(b’1234’)                              # ECMXFCRC64::crc64 = libscrc.iso(b’1234’)
crc64 = libscrc.ecma182(b’1234’)
crc64 = libscrc.we(b’1234’)
crc64 = libscrc.xz64(b’1234’)CRC82::crc82 = libscrc.darc82(b’123456789’)NOTICERevert gradually calculating function v1.4+ (2020-08-04)V1.8.1(2022-08-18)PyArg_ParseTuple() and formats which use # require the PY_SSIZE_T_CLEAN macro since python 3.10V1.8(2022-03-04)New add modbus (ASCII) LRC checksum.CRC8   -> libscrc.modbus_asc()V1.7(2021-06-07)New add CRC8   -> libscrc.id8() and libscrc.nmea()Update gradually calculate functions ( CRCx   -> libscrc.umts12()  libscrc.crc12_3gpp() )Fixed Issues #8V1.6(2021-01-18)New add CRC32  -> libscrc.stm32()New add CRC8   -> libscrc.lin()  and libscrc.lin2x()V1.4 (2020-08-04)Revert gradually calculating function. ( Fixed Issues #4 )Optimized codeGradually calculate invalid functions( TODO )CRCx -> libscrc.umts12() libscrc.crc12_3gpp()CRC8 -> libscrc.intel() libscrc.lrc()CRC16 -> libscrc.sick() libscrc.udp() libscrc.tcp() libscrc.fletcher16()CRC32 -> libscrc.fletcher32()V1.0 (2020-03-23)New hacker8 hacker16 hacker32 hacker64New FLETCHER8 FLETCHER16 FLETCHER32V0.1.5 (2017-09-22)New CRC4-ITU      Poly = 0x03 Initial = 0x00 Xorout=0x00 Refin=True Refout=TrueNew CRC5-ITU      Poly = 0x15 Initial = 0x00 Xorout=0x00 Refin=True Refout=TrueNew CRC5-EPC      Poly = 0x09 Initial = 0x09 Xorout=0x00 Refin=False Refout=FalseNew CRC5-USB      Poly = 0x05 Initial = 0x1F Xorout=0x1F Refin=True Refout=TrueNew CRC6-ITU      Poly = 0x03 Initial = 0x00 Xorout=0x00 Refin=True Refout=TrueNew CRC7-MMC      Poly = 0x09 Initial = 0x00 Xorout=0x00 Refin=False Refout=FalseV0.1.4 (2017-09-21)New CRC8-MAXIM8   Poly = 0x31 Initial = 0x00 Xorout=0x00 Refin=True  Refout=TrueNew CRC8-ROHC     Poly = 0x07 Initial = 0xFF Xorout=0x00 Refin=True  Refout=TrueNew CRC8-ITU      Poly = 0x07 Initial = 0x00 Xorout=0x55 Refin=False Refout=FalseNew CRC8-CRC8     Poly = 0x07 Initial = 0x00 Xorout=0x00 Refin=False Refout=FalseV0.1.3 (2017-09-19)New CRC16-X25New CRC16-USBNew CRC16-MAXIM16New CRC16-CCITT_FALSENew CRC16-DECTBugfixesCalculate CRC16-IBM of poly = 0x8005 is ERROR.V0.1.2 (2017-08-22)Platform SupportWin32 X64Linux_x86_64MacOSX_10_6_intelARMv7 (Toradex Ixora iMX6 Linux-4.1.41)BugfixesCoding C99 standard.Python/C API parsing arguments type error in linux.V0.1.1 (2017-08-20)New CRC16-DNP and CRC16-SICK