How to use crc method in fMBT

Best Python code snippet using fMBT_python

crcPoly.py

Source:crcPoly.py

1# http://reveng.sourceforge.net/crc-catalogue/all.htm2"""3Library of common CRC configurations4:note: POLY is the polynome of CRC and specifies which bits5    should be xored together.6:note: WIDTH - specifies the width of CRC state/value7:note: REFIN - If it is True the bits in each byte are reversed before processing.8:note: REFOUT If it is set to FALSE, the9    final value in the register is fed into the XOROUT stage directly,10    otherwise, if this parameter is TRUE, the final register value is11    reflected first.12:note: XOROUT This is an WIDTH-bit value. It is XORed to the final register value13    (after the REFOUT) stage before the value is returned as the official14    checksum.15:note: http://reveng.sourceforge.net/crc-catalogue/all.htm16:note: https://github.com/nanpuyue/crc/blob/master/CRC.txt17"""18class CRC_POLY:19    """20    Base class for crc configuration specifications21    """22    POLY = None23    WIDTH = None24    INIT = 025    REFIN = False26    REFOUT = False27    XOROUT = 028class CRC_1(CRC_POLY):29    """30    also known as parity bit31    """32    POLY = 0x133    WIDTH = 134class CRC_3_GSM(CRC_POLY):35    """36    Used in mobile networks37    """38    INIT = 0x039    POLY = 0x340    XOROUT = 0x0741    WIDTH = 342class CRC3_ROHC(CRC_POLY):43    "CRC-3/ROHC (Robust header compression rfc3095)"44    WIDTH = 345    POLY = 0x0346    INIT = 0x0747    REFIN = True48    REFOUT = True49    CHECK = 0x650    RESIDUE = 0x051class CRC_4_ITU(CRC_POLY):52    """53    G.70454    """55    POLY = 0x356    WIDTH = 457    REFIN = True58    REFOUT = True59    CHECK = 0x760    RESIDUE = 0x061class CRC_5_EPC(CRC_POLY):62    """63    Gen 2 RFID EPC-C1G264    """65    POLY = 0x0966    WIDTH = 567    CHECK = 0x0068    RESIDUE = 0x0069class CRC_5_ITU(CRC_POLY):70    """71    G.70472    """73    POLY = 0x1574    WIDTH = 575class CRC_5_USB(CRC_POLY):76    """77    USB token packets78    """79    CHECK = 0x1980    INIT = 0b1111181    REFIN = True82    REFOUT = True83    RESIDUE = 0b0110084    POLY = 0x0585    WIDTH = 586    XOROUT = 0x1f87class CRC_6_CDMA2000_A(CRC_POLY):88    "Used in mobile networks"89    POLY = 0x2790    WIDTH = 691class CRC_6_CDMA2000_B(CRC_POLY):92    "Used in mobile networks"93    POLY = 0x0794    WIDTH = 695class CRC_6_DARC(CRC_POLY):96    "Data Radio Channel"97    POLY = 0x1998    WIDTH = 699class CRC_6_GSM(CRC_POLY):100    "Used in mobile networks"101    POLY = 0x2F102    WIDTH = 6103class CRC_6_ITU(CRC_POLY):104    "Used in G.704"105    POLY = 0x03106    WIDTH = 6107class CRC_7(CRC_POLY):108    "Used in telecom systems, G.707,G.832, MMC, SD"109    POLY = 0x09110    WIDTH = 7111class CRC_7_MVB(CRC_POLY):112    "Used in Train Communication Network, IEC 60870-5"113    POLY = 0x65114    WIDTH = 7115class CRC_8(CRC_POLY):116    "Used in DVB-S2"117    POLY = 0xD5118    WIDTH = 8119class CRC_8_AUTOSAR(CRC_POLY):120    "Used in automotive integration, OpenSafety"121    POLY = 0x2F122    WIDTH = 8123class CRC_8_Bluetooth(CRC_POLY):124    "Used in wireless connectivity"125    POLY = 0xA7126    WIDTH = 8127class CRC_8_CCITT(CRC_POLY):128    "Used in I.432.1; ATM HEC, ISDN HEC and cell delineation"129    CHECK = 0xf4130    POLY = 0x07131    WIDTH = 8132    RESIDUE = 0x00133class CRC_8_Dallas_Maxim(CRC_POLY):134    "Used in 1-Wire bus"135    POLY = 0x31136    WIDTH = 8137class CRC_8_DARC(CRC_POLY):138    "Used in Data Radio Channel"139    POLY = 0x39140    WIDTH = 8141class CRC_8_GSM_B(CRC_POLY):142    "Used in mobile networks"143    POLY = 0x49144    WIDTH = 8145class CRC_8_SAE_J1850(CRC_POLY):146    "Used in AES3"147    POLY = 0x1D148    WIDTH = 8149class CRC_8_WCDMA(CRC_POLY):150    "Used in mobile networks"151    CHECK = 0x25152    INIT = 0X00153    POLY = 0x9B154    REFIN = True155    REFOUT = True156    RESIDUE = 0x00157    WIDTH = 8158class CRC_10(CRC_POLY):159    "Used in ATM; I.610"160    POLY = 0x233161    WIDTH = 10162class CRC_10_CDMA2000(CRC_POLY):163    "Used in mobile networks"164    POLY = 0x3D9165    WIDTH = 10166class CRC_10_GSM(CRC_POLY):167    "Used in mobile networks"168    POLY = 0x175169    WIDTH = 10170class CRC_11(CRC_POLY):171    "Used in FlexRay"172    POLY = 0x385173    WIDTH = 11174class CRC_12(CRC_POLY):175    "Used in telecom systems"176    POLY = 0x80F177    WIDTH = 12178class CRC_12_CDMA2000(CRC_POLY):179    "Used in mobile networks"180    POLY = 0xF13181    WIDTH = 12182class CRC_12_GSM(CRC_POLY):183    "Used in mobile networks"184    POLY = 0xD31185    WIDTH = 12186class CRC_13_BBC(CRC_POLY):187    "Used in Time signal, Radio teleswitch"188    POLY = 0x1CF5189    WIDTH = 13190class CRC_14_DARC(CRC_POLY):191    "Used in Data Radio Channel[19]"192    POLY = 0x0805193    WIDTH = 14194class CRC_14_GSM(CRC_POLY):195    "Used in mobile networks"196    POLY = 0x202D197    WIDTH = 14198class CRC_15_CAN(CRC_POLY):199    POLY = 0x4599200    WIDTH = 15201class CRC_15_MPT1327(CRC_POLY):202    POLY = 0x6815203    WIDTH = 15204class CRC_16_Chakravarty(CRC_POLY):205    "Used in Optimal for payloads â¤64 bits"206    POLY = 0x2F15207    WIDTH = 16208class CRC_16_ARINC(CRC_POLY):209    "Used in ACARS applications"210    POLY = 0xA02B211    WIDTH = 16212class CRC_16_CCITT(CRC_POLY):213    """214    Used in X.25, V.41, HDLC FCS, XMODEM, Bluetooth, PACTOR, SD, DigRF, many others;215    Also known as CRC_CCITT216    """217    INIT = 0xFFFF218    POLY = 0x1021219    WIDTH = 16220class CRC_16_CDMA2000(CRC_POLY):221    "Used in mobile networks"222    POLY = 0xC867223    WIDTH = 16224class CRC_16_DECT(CRC_POLY):225    "Used in cordless telephones"226    POLY = 0x0589227    WIDTH = 16228class CRC_16_T10_DIF(CRC_POLY):229    "Used in SCSI DIF"230    POLY = 0x8BB7231    WIDTH = 16232class CRC_16_DNP(CRC_POLY):233    "Used in DNP, IEC 870, M-Bus"234    POLY = 0x3D65235    WIDTH = 16236class CRC_16_IBM(CRC_POLY):237    """238    Used in Bisync, Modbus, ANSI X3.28, SIA DC-07, many others;239    Also known as CRC_16 and CRC_16-ANSI240    """241    POLY = 0x8005242    REFIN = True243    REFOUT = True244    WIDTH = 16245class CRC_16_USB:246    POLY=0x8005247    INIT=0XFFFF248    REFIN=True249    REFOUT=True250    XOROUT=0XFFFF251    CHECK=0XB4C8252    RESIDUE=0XB001253    WIDTH=16254class CRC_16_OpenSafety_A(CRC_POLY):255    "Used in safety fieldbus"256    POLY = 0x5935257    WIDTH = 16258class CRC_16_OpenSafety_B(CRC_POLY):259    "Used in safety fieldbus"260    POLY = 0x755B261    WIDTH = 16262class CRC_16_Profibus(CRC_POLY):263    "Used in fieldbus networks"264    POLY = 0x1DCF265    WIDTH = 16266class CRC_17_CAN(CRC_POLY):267    "Used in CAN FD"268    POLY = 0x1685B269    WIDTH = 17270class CRC_21_CAN(CRC_POLY):271    "Used in CAN FD"272    POLY = 0x102899273    WIDTH = 21274class CRC_24(CRC_POLY):275    "Used in FlexRay"276    POLY = 0x5D6DCB277    WIDTH = 24278class CRC_24_Radix_64(CRC_POLY):279    "Used in OpenPGP, RTCM104v3"280    POLY = 0x864CFB281    WIDTH = 24282class CRC_30(CRC_POLY):283    "Used in CDMA"284    POLY = 0x2030B9C7285    WIDTH = 30286class CRC_32(CRC_POLY):287    """288    Used in  HDLC, ANSI X3.66, ITU-T V.42, Ethernet, Serial ATA,289    MPEG-2, PKZIP, Gzip, Bzip2, PNG, many others290    """291    INIT = 0xffffffff292    POLY = 0x04C11DB7293    RESIDUE = 0xC704DD7B  # CBF43926294    REFIN = True295    REFOUT = True296    WIDTH = 32297    XOROUT = 0xffffffff298class CRC_32C(CRC_POLY):299    "Used in (Castagnoli), iSCSI, SCTP, G.hn payload, SSE4.2, Btrfs, ext4, Ceph"300    INIT = 0Xffffffff301    CHECK = 0xe3069283302    POLY = 0x1EDC6F41303    WIDTH = 32304    REFIN = True305    REFOUT = True306    RESIDUE = 0xb798b438307    XOROUT = 0xffffffff308class CRC_32K(CRC_POLY):309    "Koopman {1,3,28}"310    POLY = 0x741B8CD7311    WIDTH = 32312class CRC_32K_2(CRC_POLY):313    "Koopman {1,1,30}"314    POLY = 0x32583499315    WIDTH = 32316class CRC_32Q(CRC_POLY):317    "Used in aviation; AIXM"318    POLY = 0x814141AB319    WIDTH = 32320class CRC_40_GSM(CRC_POLY):321    "Used in GSM control channel[40][41]"322    POLY = 0x0004820009323    WIDTH = 40324class CRC_64_ECMA(CRC_POLY):325    "Used in ECMA-182, XZ Utils"326    POLY = 0x42F0E1EBA9EA3693327    WIDTH = 64328class CRC_64_ISO(CRC_POLY):329    "Used in HDLC, Swiss-Prot/TrEMBL; considered weak for hashing"330    POLY = 0x000000000000001B...

crc.py

Source:crc.py

1def crc_check(data, div):2    l = len(div)3    ct = 04    data = [int(i) for i in data]5    div = [int(i) for i in div]6    zero = [0 for i in range(l)]7    temp_data = [data[i] for i in range(l)]8    result = []9    for j in range(len(data) - len(div) + 1):10        print("Temp_dividend", temp_data)11        msb = temp_data[0]12        if msb == 0:13            result.append(0)14            for i in range(l - 1, -1, -1):15                temp_data[i] = temp_data[i] ^ zero[i]16        else:17            result.append(1)18            for i in range(l - 1, -1, -1):19                temp_data[i] = temp_data[i] ^ div[i]20        temp_data.pop(0)21        if l + j < len(data):22            temp_data.append(data[l + j])23    crc = temp_data24    print("Quotient: ", result, "remainder", crc)25    return crc26# returning crc value27while 1 > 0:28    print("Enter data: ")29    data = input()  # can use it like int(input())30    print("Enter divisor")31    div = input()  # can use it like int(input())32    original_data = data33    data = data + ("0" * (len(div) - 1))34    crc = crc_check(data, div)35    crc_str = ""36    for c in crc:37        crc_str += c38    print("Sent data: ", original_data + crc_str)39    sent_data = original_data + crc_str40    print(41        "If again applying CRC algorithm, the remainder/CRC must be zero if errorless."42    )43    crc = crc_check(sent_data, div)44    remainder = crc45    print("Receiver side remainder: ", remainder)46    print("Continue [Y/N]:")47    ch = input()48    if ch == "N" or ch == "n":49        break50    else:...

crc16.py

Source:crc16.py

1#!/usr/bin/python2# ======================================================================3# crc16.py - Prototype implementations of CRC16 calculation4#5# Copyright (C) 2006 Dick Streefland6#7# This is free software, licensed under the terms of the GNU General8# Public License as published by the Free Software Foundation.9# ======================================================================10import sys11polynomial = 0xA001	# X^16 + X^15 + X^2 + 1 - lower 16 bits, reversed12def crc_update(crc, value, bits):13	for bit in range(bits):14		xor = (crc ^ (value >> bit)) & 115		crc >>= 116		if xor:17			crc ^= polynomial18	return crc19def crc1(crc, byte):20	return crc_update(crc, byte, 8)21def crc4(crc, byte):22	crc = (crc >> 4) ^ tab4[(crc ^ byte) & 0xf]23	crc = (crc >> 4) ^ tab4[(crc ^ (byte >> 4)) & 0xf]24	return crc25def crc8(crc, byte):26	return (crc >> 8) ^ tab8[(crc ^ byte) & 0xff]27def crc_file(file, crcfunc):28	crc = 0xffff29	for byte in open(file).read():30		crc = crcfunc(crc, ord(byte))31	crc ^= 0xffff32	print "%02x %02x %s" % (crc & 0xff, crc >> 8, file)33tab4 = [crc_update(i, 0, 4) for i in range(2**4)]34tab8 = [crc_update(i, 0, 8) for i in range(2**8)]35for file in sys.argv[1:]:36	crc_file(file, crc1)37	crc_file(file, crc4)...

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