crcany | Compute any CRC a bit at a time a byte at a time

by madler HTML Version: v2.1 License: No License

X-Ray Key Features Code Snippets Community Discussions(1)Vulnerabilities Install Support

kandi X-RAY | crcany Summary

crcany is a HTML library. crcany has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

Compute any CRC, a bit at a time, a byte at a time, and a word at a time.

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Security

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Support

crcany has a low active ecosystem.

It has 277 star(s) with 47 fork(s). There are 20 watchers for this library.

It had no major release in the last 6 months.

There are 0 open issues and 9 have been closed. On average issues are closed in 213 days. There are 1 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of crcany is v2.1

Quality

crcany has 0 bugs and 0 code smells.

Security

crcany has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

crcany code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

crcany does not have a standard license declared.

Check the repository for any license declaration and review the terms closely.

Without a license, all rights are reserved, and you cannot use the library in your applications.

Reuse

crcany releases are not available. You will need to build from source code and install.

Installation instructions, examples and code snippets are available.

It has 52 lines of code, 0 functions and 1 files.

It has low code complexity. Code complexity directly impacts maintainability of the code.

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crcany Key Features

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crcany Examples and Code Snippets

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Community Discussions

Trending Discussions on crcany

Fast CRC with PCLMULQDQ *NOT* reflected

QUESTION

Fast CRC with PCLMULQDQ *NOT* reflected

Asked 2022-Mar-07 at 15:47

I'm trying to write a PCLMULQDQ-optimized CRC-32 implementation. The specific CRC-32 variant is for one that I don't own, but am trying to support in library form. In crcany model form, it has the following parameters:

width=32 poly=0xaf init=0xffffffff refin=false refout=false xorout=0x00000000 check=0xa5fd3138 (Omitted residue which I believe is 0x00000000 but honestly don't know what it is)

A basic non-table-based/bitwise implementation of the algorithm (as generated by crcany) is:

...

ANSWER

Answered 2022-Mar-07 at 15:47

I have 6 sets of code for 16, 32, 64 bit crc, non-reflected and reflected here. The code is setup for Visual Studio. Comments have been added to the constants which were missing from Intel's github site.

https://github.com/jeffareid/crc

32 bit non-relfected is here:

https://github.com/jeffareid/crc/tree/master/crc32f

You'll need to change the polynomial in crc32fg.cpp, which generates the constants. The polynomial you want is actually:

Source https://stackoverflow.com/questions/71328336

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install crcany

This will compile the crctest, crcgen, and mincrc executables:.

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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