# libcrc **Repository Path**: tianbeibei/libcrc ## Basic Information - **Project Name**: libcrc - **Description**: 循环冗余校验 (CRC8 / CRC16 / CRC24 / CRC32 / CRC64) - **Primary Language**: C - **License**: Apache-2.0 - **Default Branch**: main - **Homepage**: https://github.com/skb666/libcrc - **GVP Project**: No ## Statistics - **Stars**: 1 - **Forks**: 0 - **Created**: 2026-07-28 - **Last Updated**: 2026-09-08 ## Categories & Tags **Categories**: Uncategorized **Tags**: None ## README # libcrc 本仓库代码均由 [skb666/CRC](https://github.com/skb666/CRC) 生成 ## 使用方法 **编译测试工程** ```bash cmake -S. -Bbuild # 构建所有目标 cmake --build build --target all -- -j${nproc} # 执行单元测试 cmake --build build --target test ``` **接口举例** crc32_mpeg 对外接口如下，不同的参数模型只需替换 CRC32_MPEG2、crc32_mpeg 即可 ```c // 创建 crc 变量 CRC32_MPEG2 crc; // 初始化 crc void CRC(crc32_mpeg, init)(CRC32_MPEG2 *crc); // 重置分次校验值 void CRC(crc32_mpeg, reset)(CRC32_MPEG2 *crc); // 分次校验 CRC32_MPEG2_NUM_TYPE CRC(crc32_mpeg, accum)(CRC32_MPEG2 *crc, void *data, size_t length); // 获取分次校验值 CRC32_MPEG2_NUM_TYPE CRC(crc32_mpeg, get)(CRC32_MPEG2 *crc); // 单次校验 CRC32_MPEG2_NUM_TYPE CRC(crc32_mpeg, calc)(CRC32_MPEG2 *crc, void *data, size_t length); ``` ## 支持的 CRC 参数模型 | 算法名称 | 宽度 | 多项式 | 初始值 | 结果异或值 | 输入反转 | 输出反转 | | :------------------ | :---: | :----------------- | :----------------- | :----------------- | -------: | -------: | | crc8 | 8 | 0x07 | 0x00 | 0x00 | False | False | | crc8_sae_j1850 | 8 | 0x1D | 0xFF | 0xFF | False | False | | crc8_sae_j1850_zero | 8 | 0x1D | 0x00 | 0x00 | False | False | | crc8_8h2f | 8 | 0x2F | 0xFF | 0xFF | False | False | | crc8_cdma2000 | 8 | 0x9B | 0xFF | 0x00 | False | False | | crc8_darc | 8 | 0x39 | 0x00 | 0x00 | True | True | | crc8_dvb_s2 | 8 | 0xD5 | 0x00 | 0x00 | False | False | | crc8_ebu | 8 | 0x1D | 0xFF | 0x00 | True | True | | crc8_icode | 8 | 0x1D | 0xFD | 0x00 | False | False | | crc8_itu | 8 | 0x07 | 0x00 | 0x55 | False | False | | crc8_maxim | 8 | 0x31 | 0x00 | 0x00 | True | True | | crc8_rohc | 8 | 0x07 | 0xFF | 0x00 | True | True | | crc8_wcdma | 8 | 0x9B | 0x00 | 0x00 | True | True | | crc16_ccit_zero | 16 | 0x1021 | 0x0000 | 0x0000 | False | False | | crc16_arc | 16 | 0x8005 | 0x0000 | 0x0000 | True | True | | crc16_aug_ccitt | 16 | 0x1021 | 0x1D0F | 0x0000 | False | False | | crc16_buypass | 16 | 0x8005 | 0x0000 | 0x0000 | False | False | | crc16_ccitt_false | 16 | 0x1021 | 0xFFFF | 0x0000 | False | False | | crc16_cdma2000 | 16 | 0xC867 | 0xFFFF | 0x0000 | False | False | | crc16_dds_110 | 16 | 0x8005 | 0x800D | 0x0000 | False | False | | crc16_dect_r | 16 | 0x0589 | 0x0000 | 0x0001 | False | False | | crc16_dect_x | 16 | 0x0589 | 0x0000 | 0x0000 | False | False | | crc16_dnp | 16 | 0x3D65 | 0x0000 | 0xFFFF | True | True | | crc16_en_13757 | 16 | 0x3D65 | 0x0000 | 0xFFFF | False | False | | crc16_genibus | 16 | 0x1021 | 0xFFFF | 0xFFFF | False | False | | crc16_ibm | 16 | 0x8005 | 0x0000 | 0x0000 | True | True | | crc16_maxim | 16 | 0x8005 | 0x0000 | 0xFFFF | True | True | | crc16_mcrf4xx | 16 | 0x1021 | 0xFFFF | 0x0000 | True | True | | crc16_riello | 16 | 0x1021 | 0xB2AA | 0x0000 | True | True | | crc16_t10_dif | 16 | 0x8BB7 | 0x0000 | 0x0000 | False | False | | crc16_teledisk | 16 | 0xA097 | 0x0000 | 0x0000 | False | False | | crc16_tms37157 | 16 | 0x1021 | 0x89EC | 0x0000 | True | True | | crc16_usb | 16 | 0x8005 | 0xFFFF | 0xFFFF | True | True | | crc16_a | 16 | 0x1021 | 0xC6C6 | 0x0000 | True | True | | crc16_kermit | 16 | 0x1021 | 0x0000 | 0x0000 | True | True | | crc16_modbus | 16 | 0x8005 | 0xFFFF | 0x0000 | True | True | | crc16_x25 | 16 | 0x1021 | 0xFFFF | 0xFFFF | True | True | | crc16_xmodem | 16 | 0x1021 | 0x0000 | 0x0000 | False | False | | crc24_openpgp | 24 | 0x864cfb | 0xb704ce | 0x000000 | False | False | | crc24_flexray_a | 24 | 0x5d6dcb | 0xfedcba | 0x000000 | False | False | | crc24_flexray_b | 24 | 0x5d6dcb | 0xabcdef | 0x000000 | False | False | | crc32 | 32 | 0x04C11DB7 | 0xFFFFFFFF | 0xFFFFFFFF | True | True | | crc32_bzip2 | 32 | 0x04C11DB7 | 0xFFFFFFFF | 0xFFFFFFFF | False | False | | crc32_c | 32 | 0x1EDC6F41 | 0xFFFFFFFF | 0xFFFFFFFF | True | True | | crc32_d | 32 | 0xA833982B | 0xFFFFFFFF | 0xFFFFFFFF | True | True | | crc32_mpeg2 | 32 | 0x04C11DB7 | 0xFFFFFFFF | 0x00000000 | False | False | | crc32_posix | 32 | 0x04C11DB7 | 0x00000000 | 0xFFFFFFFF | False | False | | crc32_q | 32 | 0x814141AB | 0x00000000 | 0x00000000 | False | False | | crc32_jamcrc | 32 | 0x04C11DB7 | 0xFFFFFFFF | 0x00000000 | True | True | | crc32_xfer | 32 | 0x000000AF | 0x00000000 | 0x00000000 | False | False | | crc64_ecma_182 | 64 | 0x42F0E1EBA9EA3693 | 0x0000000000000000 | 0x0000000000000000 | False | False | | crc64_go_iso | 64 | 0x000000000000001B | 0xFFFFFFFFFFFFFFFF | 0xFFFFFFFFFFFFFFFF | True | True | | crc64_we | 64 | 0x42F0E1EBA9EA3693 | 0xFFFFFFFFFFFFFFFF | 0xFFFFFFFFFFFFFFFF | False | False | | crc64_xz | 64 | 0x42F0E1EBA9EA3693 | 0xFFFFFFFFFFFFFFFF | 0xFFFFFFFFFFFFFFFF | True | True | ## 在线验证平台 1. [CRC（循环冗余校验）在线计算](http://www.ip33.com/crc.html) 2. [CRC Calculator (Javascript)](http://www.sunshine2k.de/coding/javascript/crc/crc_js.html) 3. [16进制(CRC24)(多项式异或,多种)校验](https://www.23bei.com/tool/825.html)