CRC RevEng: arbitrary-precision CRC calculator and algorithm finder

About CRC RevEng

CRC RevEng is a portable, arbitrary-precision CRC calculator and algorithm finder. It calculates CRCs using any of the 113 preset algorithms, or a user-specified algorithm to any width. It calculates reversed CRCs to give the bit pattern that produces a desired forward CRC. CRC RevEng also reverse-engineers any CRC algorithm from sufficient correctly formatted message-CRC pairs and optional known parameters. It comprises powerful input interpretation options. Compliant with Ross Williams' Rocksoft™ model of parametrised CRC algorithms.

CRC RevEng was first released on 5 January 2011 at regregex.bbcmicro.net. It is a port and expansion of a Perl script, crcbfs.pl, released in 2007. This SourceForge project was created on 28 May 2012.

CRC RevEng is released under the terms of the GNU General Public License, version 3 and later (GPLv3+).

Features

• Reverse-engineers CRC algorithms
• Arbitrary precision, calculates and solves CRCs of any bit width
• Bit oriented, accepts messages of any bit length
• Handles binary, octal, hex, and text input strings, 7-bit and 8-bit files
• Calculates CRCs forwards or backwards, to help produce a desired CRC value
• Define your own algorithm, or use one of 113 traceable presets
• Written in portable C, adapts to most architectures

Latest version

The latest version of CRC RevEng is 3.0.6, released on 7 August 2024. The latest changes are:

• Added algorithm CRC-64/NVME from the CRC Catalogue (thanks to Don MacAskill).

 Enhanced Zip archive available for RISC OS. For other operating systems please view the latest releases.

Documentation

• User manual
• Revision history
• Catalogue of parametrised CRC algorithms, a list of sources for the preset algorithms in CRC RevEng.

Greg Cook,
https://reveng.sourceforge.io/ Last updated 8 August 2024

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