Req #71890 [Opn->Csd]: crc32c checksum algorithm

Edit report at https://bugs.php.net/bug.php?id=71890&edit=1 ID: 71890 Updated by: nikic@php.net Reported by: wookie at no-way dot org Summary: crc32c checksum algorithm -Status: Open +Status: Closed Type: Feature/Change Request Package: hash related PHP Version: Next Minor Version Block user comment: N Private report: N New Comment: Automatic comment on behalf of bramp@google.com Revision: http://git.php.net/?p=php-src.git;a=commit;h=c79ce48ddb2125a3d19723e0fbca1bd770bacab7 Log: Fix #71890: Add support for crc32c Castagnoli's polynomial. Previous Comments: ------------------------------------------------------------------------ [2019-03-04 04:29:33] The following pull request has been associated: Patch Name: Fix #71890: Add support for crc32c Castagnoli's polynomial. On GitHub: https://github.com/php/php-src/pull/3913 Patch: https://github.com/php/php-src/pull/3913.patch ------------------------------------------------------------------------ [2018-06-04 15:48:06] lisachenko dot it at gmail dot com Bump, Apache Kafka also uses hardware-accelerated CRC32-c which is missed in PHP ------------------------------------------------------------------------ [2016-03-24 13:26:56] wookie at no-way dot org Description: ------------ Hi I would like to use Castagnoli's crc32c checksum polynomial on a progressive stream, but it does not seem to be available in hash_algo(). When dealing with streams crc32c generally performs better as a checksum than normal crc32. It would be a nice (IMHO) algorithm feature to include. It would be better that this gets implemented natively as it could take advantage of hardware support if it exists. It is about 3x faster than crc32 in certain conditions and about 7-9x faster when hardware assisted. Just as an indicator of it's popularity: Google seems to be also using crc32c in their cloud storage api: https://cloud.google.com/storage/docs/gsutil/addlhelp/CRC32CandInstallingcrcmod There is also an implementation for nodejs: https://www.npmjs.com/package/fast-crc32c tnx. ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=71890&edit=1