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python3 +qt5,用pyqt5写一个crc校验工具,crc8 crc16 crc32 crc32

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发布于 07/01 16:21
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python3 +qt5,用pyqt5写一个crc校验工具,crc8 crc16 crc32 crc32

1. 概述

在上一篇博客中分析了crc的原理链接: 图解crc校验,crc8, crc16, crc32, crc24 用 c语言和python实现.
在最后实现部分,只是简单的讲CRC24的源码放在了后面,距离我们做一个工具的目标还有距离,这篇文章就是将我们想法实现了,做一个工具,随时都可以用的。
在这里插入图片描述

闲话不多说,先上一张效果图(PS:这只是第一版,只有基础的计算,还有很多功能在完善中):
在这里插入图片描述
这里的测试数据是:

00 00 00 00 02 00 44 00 02 10 00 25 00 28 0c 00 10 00 02 49 74 36 00 00 00 00 00 00 00 00 00 00 00 00 00 00 10 00 02 49 74 36 48 55 5c 07 7c ef 00 81 00 00 e1 88 01 31 00 00 00 00 10 00 03 96 64 34 00 02 03 00 02 00 01 01 01 00 21 c0 80 73 10 27 00 00 b6 b5 f7 4f b7 65 9a f8 5b 01 ef be 00 00 00 00 00 00 00 00 00 c8 f5 f0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

大家可以在网上随便找个CRC计算工具,来算下肯定是正确的。
在这里插入图片描述

2. 实现

这里用到的都是比较简单的控件,用来显示CRC项的QTreeWidget,显示描述和现实计算结果的QTextBrowser,输入内容的QTextEdit,选择输入格式的QRadioButton,开始计算的pushButton等等。
代码很多,这里就只是把计算CRC的部分贴出来了,整个工程放在了github上面,需要的请自取。

github完整代码: github https://github.com/hellomyself1/crc-calculate.

crc table如下:

# -*- coding: utf-8 -*-


# #######crc table###################


# CRC table for the CRC-32. */
# The poly is 0x4C11DB7 (x^32+ x^26 + x^23 + x^22 + x^16 + x^12 + x^11
# + x^10 + x^8 + x^7 + x^5 + x^4 + x^2 + x + 1)
crc32_table = [
    0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA, 0x076DC419, 0x706AF48F,
    0xE963A535, 0x9E6495A3, 0x0EDB8832, 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988,
    0x09B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91, 0x1DB71064, 0x6AB020F2,
    0xF3B97148, 0x84BE41DE, 0x1ADAD47D, 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7,
    0x136C9856, 0x646BA8C0, 0xFD62F97A, 0x8A65C9EC, 0x14015C4F, 0x63066CD9,
    0xFA0F3D63, 0x8D080DF5, 0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172,
    0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B, 0x35B5A8FA, 0x42B2986C,
    0xDBBBC9D6, 0xACBCF940, 0x32D86CE3, 0x45DF5C75, 0xDCD60DCF, 0xABD13D59,
    0x26D930AC, 0x51DE003A, 0xC8D75180, 0xBFD06116, 0x21B4F4B5, 0x56B3C423,
    0xCFBA9599, 0xB8BDA50F, 0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924,
    0x2F6F7C87, 0x58684C11, 0xC1611DAB, 0xB6662D3D, 0x76DC4190, 0x01DB7106,
    0x98D220BC, 0xEFD5102A, 0x71B18589, 0x06B6B51F, 0x9FBFE4A5, 0xE8B8D433,
    0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818, 0x7F6A0DBB, 0x086D3D2D,
    0x91646C97, 0xE6635C01, 0x6B6B51F4, 0x1C6C6162, 0x856530D8, 0xF262004E,
    0x6C0695ED, 0x1B01A57B, 0x8208F4C1, 0xF50FC457, 0x65B0D9C6, 0x12B7E950,
    0x8BBEB8EA, 0xFCB9887C, 0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65,
    0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2, 0x4ADFA541, 0x3DD895D7,
    0xA4D1C46D, 0xD3D6F4FB, 0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0,
    0x44042D73, 0x33031DE5, 0xAA0A4C5F, 0xDD0D7CC9, 0x5005713C, 0x270241AA,
    0xBE0B1010, 0xC90C2086, 0x5768B525, 0x206F85B3, 0xB966D409, 0xCE61E49F,
    0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4, 0x59B33D17, 0x2EB40D81,
    0xB7BD5C3B, 0xC0BA6CAD, 0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A,
    0xEAD54739, 0x9DD277AF, 0x04DB2615, 0x73DC1683, 0xE3630B12, 0x94643B84,
    0x0D6D6A3E, 0x7A6A5AA8, 0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1,
    0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE, 0xF762575D, 0x806567CB,
    0x196C3671, 0x6E6B06E7, 0xFED41B76, 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC,
    0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5, 0xD6D6A3E8, 0xA1D1937E,
    0x38D8C2C4, 0x4FDFF252, 0xD1BB67F1, 0xA6BC5767, 0x3FB506DD, 0x48B2364B,
    0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, 0x41047A60, 0xDF60EFC3, 0xA867DF55,
    0x316E8EEF, 0x4669BE79, 0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236,
    0xCC0C7795, 0xBB0B4703, 0x220216B9, 0x5505262F, 0xC5BA3BBE, 0xB2BD0B28,
    0x2BB45A92, 0x5CB36A04, 0xC2D7FFA7, 0xB5D0CF31, 0x2CD99E8B, 0x5BDEAE1D,
    0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A, 0x9C0906A9, 0xEB0E363F,
    0x72076785, 0x05005713, 0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38,
    0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, 0x0BDBDF21, 0x86D3D2D4, 0xF1D4E242,
    0x68DDB3F8, 0x1FDA836E, 0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777,
    0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C, 0x8F659EFF, 0xF862AE69,
    0x616BFFD3, 0x166CCF45, 0xA00AE278, 0xD70DD2EE, 0x4E048354, 0x3903B3C2,
    0xA7672661, 0xD06016F7, 0x4969474D, 0x3E6E77DB, 0xAED16A4A, 0xD9D65ADC,
    0x40DF0B66, 0x37D83BF0, 0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9,
    0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6, 0xBAD03605, 0xCDD70693,
    0x54DE5729, 0x23D967BF, 0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94,
    0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D
]  # 256

# CRC table for the CRC-24.
# The poly is 0x800063 (x^24 + x^23 + x^6 + x^5 + x + 1)
# This table for little-endian CRC computation.

crc24_table = [
    0x00000000, 0x00848401, 0x00850801, 0x00018c00, 0x00861001, 0x00029400,
    0x00031800, 0x00879c01, 0x00802001, 0x0004a400, 0x00052800, 0x0081ac01,
    0x00063000, 0x0082b401, 0x00833801, 0x0007bc00, 0x008c4001, 0x0008c400,
    0x00094800, 0x008dcc01, 0x000a5000, 0x008ed401, 0x008f5801, 0x000bdc00,
    0x000c6000, 0x0088e401, 0x00896801, 0x000dec00, 0x008a7001, 0x000ef400,
    0x000f7800, 0x008bfc01, 0x00948001, 0x00100400, 0x00118800, 0x00950c01,
    0x00129000, 0x00961401, 0x00979801, 0x00131c00, 0x0014a000, 0x00902401,
    0x0091a801, 0x00152c00, 0x0092b001, 0x00163400, 0x0017b800, 0x00933c01,
    0x0018c000, 0x009c4401, 0x009dc801, 0x00194c00, 0x009ed001, 0x001a5400,
    0x001bd800, 0x009f5c01, 0x0098e001, 0x001c6400, 0x001de800, 0x00996c01,
    0x001ef000, 0x009a7401, 0x009bf801, 0x001f7c00, 0x00a50001, 0x00218400,
    0x00200800, 0x00a48c01, 0x00231000, 0x00a79401, 0x00a61801, 0x00229c00,
    0x00252000, 0x00a1a401, 0x00a02801, 0x0024ac00, 0x00a33001, 0x0027b400,
    0x00263800, 0x00a2bc01, 0x00294000, 0x00adc401, 0x00ac4801, 0x0028cc00,
    0x00af5001, 0x002bd400, 0x002a5800, 0x00aedc01, 0x00a96001, 0x002de400,
    0x002c6800, 0x00a8ec01, 0x002f7000, 0x00abf401, 0x00aa7801, 0x002efc00,
    0x00318000, 0x00b50401, 0x00b48801, 0x00300c00, 0x00b79001, 0x00331400,
    0x00329800, 0x00b61c01, 0x00b1a001, 0x00352400, 0x0034a800, 0x00b02c01,
    0x0037b000, 0x00b33401, 0x00b2b801, 0x00363c00, 0x00bdc001, 0x00394400,
    0x0038c800, 0x00bc4c01, 0x003bd000, 0x00bf5401, 0x00bed801, 0x003a5c00,
    0x003de000, 0x00b96401, 0x00b8e801, 0x003c6c00, 0x00bbf001, 0x003f7400,
    0x003ef800, 0x00ba7c01, 0x00c60001, 0x00428400, 0x00430800, 0x00c78c01,
    0x00401000, 0x00c49401, 0x00c51801, 0x00419c00, 0x00462000, 0x00c2a401,
    0x00c32801, 0x0047ac00, 0x00c03001, 0x0044b400, 0x00453800, 0x00c1bc01,
    0x004a4000, 0x00cec401, 0x00cf4801, 0x004bcc00, 0x00cc5001, 0x0048d400,
    0x00495800, 0x00cddc01, 0x00ca6001, 0x004ee400, 0x004f6800, 0x00cbec01,
    0x004c7000, 0x00c8f401, 0x00c97801, 0x004dfc00, 0x00528000, 0x00d60401,
    0x00d78801, 0x00530c00, 0x00d49001, 0x00501400, 0x00519800, 0x00d51c01,
    0x00d2a001, 0x00562400, 0x0057a800, 0x00d32c01, 0x0054b000, 0x00d03401,
    0x00d1b801, 0x00553c00, 0x00dec001, 0x005a4400, 0x005bc800, 0x00df4c01,
    0x0058d000, 0x00dc5401, 0x00ddd801, 0x00595c00, 0x005ee000, 0x00da6401,
    0x00dbe801, 0x005f6c00, 0x00d8f001, 0x005c7400, 0x005df800, 0x00d97c01,
    0x00630000, 0x00e78401, 0x00e60801, 0x00628c00, 0x00e51001, 0x00619400,
    0x00601800, 0x00e49c01, 0x00e32001, 0x0067a400, 0x00662800, 0x00e2ac01,
    0x00653000, 0x00e1b401, 0x00e03801, 0x0064bc00, 0x00ef4001, 0x006bc400,
    0x006a4800, 0x00eecc01, 0x00695000, 0x00edd401, 0x00ec5801, 0x0068dc00,
    0x006f6000, 0x00ebe401, 0x00ea6801, 0x006eec00, 0x00e97001, 0x006df400,
    0x006c7800, 0x00e8fc01, 0x00f78001, 0x00730400, 0x00728800, 0x00f60c01,
    0x00719000, 0x00f51401, 0x00f49801, 0x00701c00, 0x0077a000, 0x00f32401,
    0x00f2a801, 0x00762c00, 0x00f1b001, 0x00753400, 0x0074b800, 0x00f03c01,
    0x007bc000, 0x00ff4401, 0x00fec801, 0x007a4c00, 0x00fdd001, 0x00795400,
    0x0078d800, 0x00fc5c01, 0x00fbe001, 0x007f6400, 0x007ee800, 0x00fa6c01,
    0x007df000, 0x00f97401, 0x00f8f801, 0x007c7c00
]  # 256

# CRC table for the CRC-16.
# The poly is 0x1021 (x^16 + x^12 + x^5 + 1)
crc16_table = [
    0X0000, 0X1189, 0X2312, 0X329B, 0X4624, 0X57AD, 0X6536, 0X74BF,
    0X8C48, 0X9DC1, 0XAF5A, 0XBED3, 0XCA6C, 0XDBE5, 0XE97E, 0XF8F7,
    0X1081, 0X0108, 0X3393, 0X221A, 0X56A5, 0X472C, 0X75B7, 0X643E,
    0X9CC9, 0X8D40, 0XBFDB, 0XAE52, 0XDAED, 0XCB64, 0XF9FF, 0XE876,
    0X2102, 0X308B, 0X0210, 0X1399, 0X6726, 0X76AF, 0X4434, 0X55BD,
    0XAD4A, 0XBCC3, 0X8E58, 0X9FD1, 0XEB6E, 0XFAE7, 0XC87C, 0XD9F5,
    0X3183, 0X200A, 0X1291, 0X0318, 0X77A7, 0X662E, 0X54B5, 0X453C,
    0XBDCB, 0XAC42, 0X9ED9, 0X8F50, 0XFBEF, 0XEA66, 0XD8FD, 0XC974,
    0X4204, 0X538D, 0X6116, 0X709F, 0X0420, 0X15A9, 0X2732, 0X36BB,
    0XCE4C, 0XDFC5, 0XED5E, 0XFCD7, 0X8868, 0X99E1, 0XAB7A, 0XBAF3,
    0X5285, 0X430C, 0X7197, 0X601E, 0X14A1, 0X0528, 0X37B3, 0X263A,
    0XDECD, 0XCF44, 0XFDDF, 0XEC56, 0X98E9, 0X8960, 0XBBFB, 0XAA72,
    0X6306, 0X728F, 0X4014, 0X519D, 0X2522, 0X34AB, 0X0630, 0X17B9,
    0XEF4E, 0XFEC7, 0XCC5C, 0XDDD5, 0XA96A, 0XB8E3, 0X8A78, 0X9BF1,
    0X7387, 0X620E, 0X5095, 0X411C, 0X35A3, 0X242A, 0X16B1, 0X0738,
    0XFFCF, 0XEE46, 0XDCDD, 0XCD54, 0XB9EB, 0XA862, 0X9AF9, 0X8B70,
    0X8408, 0X9581, 0XA71A, 0XB693, 0XC22C, 0XD3A5, 0XE13E, 0XF0B7,
    0X0840, 0X19C9, 0X2B52, 0X3ADB, 0X4E64, 0X5FED, 0X6D76, 0X7CFF,
    0X9489, 0X8500, 0XB79B, 0XA612, 0XD2AD, 0XC324, 0XF1BF, 0XE036,
    0X18C1, 0X0948, 0X3BD3, 0X2A5A, 0X5EE5, 0X4F6C, 0X7DF7, 0X6C7E,
    0XA50A, 0XB483, 0X8618, 0X9791, 0XE32E, 0XF2A7, 0XC03C, 0XD1B5,
    0X2942, 0X38CB, 0X0A50, 0X1BD9, 0X6F66, 0X7EEF, 0X4C74, 0X5DFD,
    0XB58B, 0XA402, 0X9699, 0X8710, 0XF3AF, 0XE226, 0XD0BD, 0XC134,
    0X39C3, 0X284A, 0X1AD1, 0X0B58, 0X7FE7, 0X6E6E, 0X5CF5, 0X4D7C,
    0XC60C, 0XD785, 0XE51E, 0XF497, 0X8028, 0X91A1, 0XA33A, 0XB2B3,
    0X4A44, 0X5BCD, 0X6956, 0X78DF, 0X0C60, 0X1DE9, 0X2F72, 0X3EFB,
    0XD68D, 0XC704, 0XF59F, 0XE416, 0X90A9, 0X8120, 0XB3BB, 0XA232,
    0X5AC5, 0X4B4C, 0X79D7, 0X685E, 0X1CE1, 0X0D68, 0X3FF3, 0X2E7A,
    0XE70E, 0XF687, 0XC41C, 0XD595, 0XA12A, 0XB0A3, 0X8238, 0X93B1,
    0X6B46, 0X7ACF, 0X4854, 0X59DD, 0X2D62, 0X3CEB, 0X0E70, 0X1FF9,
    0XF78F, 0XE606, 0XD49D, 0XC514, 0XB1AB, 0XA022, 0X92B9, 0X8330,
    0X7BC7, 0X6A4E, 0X58D5, 0X495C, 0X3DE3, 0X2C6A, 0X1EF1, 0X0F78
]  # 256


# CRC table for the CRC-8.
# The poly is 0x31 (x^8 + x^5 + x^4 + 1)
crc8_table = [
    0x00, 0x5e, 0xbc, 0xe2, 0x61, 0x3f, 0xdd, 0x83,
    0xc2, 0x9c, 0x7e, 0x20, 0xa3, 0xfd, 0x1f, 0x41,
    0x9d, 0xc3, 0x21, 0x7f, 0xfc, 0xa2, 0x40, 0x1e,
    0x5f, 0x01, 0xe3, 0xbd, 0x3e, 0x60, 0x82, 0xdc,
    0x23, 0x7d, 0x9f, 0xc1, 0x42, 0x1c, 0xfe, 0xa0,
    0xe1, 0xbf, 0x5d, 0x03, 0x80, 0xde, 0x3c, 0x62,
    0xbe, 0xe0, 0x02, 0x5c, 0xdf, 0x81, 0x63, 0x3d,
    0x7c, 0x22, 0xc0, 0x9e, 0x1d, 0x43, 0xa1, 0xff,
    0x46, 0x18, 0xfa, 0xa4, 0x27, 0x79, 0x9b, 0xc5,
    0x84, 0xda, 0x38, 0x66, 0xe5, 0xbb, 0x59, 0x07,
    0xdb, 0x85, 0x67, 0x39, 0xba, 0xe4, 0x06, 0x58,
    0x19, 0x47, 0xa5, 0xfb, 0x78, 0x26, 0xc4, 0x9a,
    0x65, 0x3b, 0xd9, 0x87, 0x04, 0x5a, 0xb8, 0xe6,
    0xa7, 0xf9, 0x1b, 0x45, 0xc6, 0x98, 0x7a, 0x24,
    0xf8, 0xa6, 0x44, 0x1a, 0x99, 0xc7, 0x25, 0x7b,
    0x3a, 0x64, 0x86, 0xd8, 0x5b, 0x05, 0xe7, 0xb9,
    0x8c, 0xd2, 0x30, 0x6e, 0xed, 0xb3, 0x51, 0x0f,
    0x4e, 0x10, 0xf2, 0xac, 0x2f, 0x71, 0x93, 0xcd,
    0x11, 0x4f, 0xad, 0xf3, 0x70, 0x2e, 0xcc, 0x92,
    0xd3, 0x8d, 0x6f, 0x31, 0xb2, 0xec, 0x0e, 0x50,
    0xaf, 0xf1, 0x13, 0x4d, 0xce, 0x90, 0x72, 0x2c,
    0x6d, 0x33, 0xd1, 0x8f, 0x0c, 0x52, 0xb0, 0xee,
    0x32, 0x6c, 0x8e, 0xd0, 0x53, 0x0d, 0xef, 0xb1,
    0xf0, 0xae, 0x4c, 0x12, 0x91, 0xcf, 0x2d, 0x73,
    0xca, 0x94, 0x76, 0x28, 0xab, 0xf5, 0x17, 0x49,
    0x08, 0x56, 0xb4, 0xea, 0x69, 0x37, 0xd5, 0x8b,
    0x57, 0x09, 0xeb, 0xb5, 0x36, 0x68, 0x8a, 0xd4,
    0x95, 0xcb, 0x29, 0x77, 0xf4, 0xaa, 0x48, 0x16,
    0xe9, 0xb7, 0x55, 0x0b, 0x88, 0xd6, 0x34, 0x6a,
    0x2b, 0x75, 0x97, 0xc9, 0x4a, 0x14, 0xf6, 0xa8,
    0x74, 0x2a, 0xc8, 0x96, 0x15, 0x4b, 0xa9, 0xf7,
    0xb6, 0xe8, 0x0a, 0x54, 0xd7, 0x89, 0x6b, 0x35
]

crc计算的py如下:

# -*- coding: utf-8 -*-

import crc_table


class CrcCal:
    def __init__(self):
        pass

    def crc8(self, octets):
        crc = 0 & 0x00FFFFFF
        try:
            for octet in octets:
                crc = crc ^ octet
                crc = crc_table.crc8_table[crc & 0x0FF]
        except:
            pass
        return crc & 0x00FFFFFF

    def crc16(self, octets):
        crc = 0 & 0x00FFFFFF
        try:
            for octet in octets:
                crc = crc ^ octet
                crc = (crc >> 8) ^ crc_table.crc16_table[crc & 0x0FF]
        except:
            pass
        return crc & 0x00FFFFFF

    def crc24(self, octets):
        crc = 0 & 0x00FFFFFF
        try:
            for octet in octets:
                crc = crc ^ octet
                crc = (crc >> 8) ^ crc_table.crc24_table[crc & 0x0FF]
        except:
            pass
        return crc & 0x00FFFFFF

    def crc32(self, octets):
        crc = 0 & 0x00FFFFFF
        try:
            for octet in octets:
                crc = crc ^ octet
                crc = ((crc >> 8) & 0x00FFFFFF) ^ crc_table.crc32_table[crc & 0x0FF]
        except:
            pass
        return crc

好了,这里就放了主要的crc计算的py,如果大家需要源码,可以用上面的链接自取,谢谢,如果有什么建议,欢迎提出。

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