git@vger.kernel.org mailing list mirror (one of many)
 help / color / mirror / code / Atom feed
From: Hans Petter Selasky <hps@selasky.org>
To: Konstantin Ryabitsev <konstantin@linuxfoundation.org>
Cc: rsbecker@nexbridge.com, git@vger.kernel.org
Subject: Re: Gitorious should use CRC128 / 256 / 512 instead of SHA-1
Date: Fri, 13 Jan 2023 17:45:45 +0100	[thread overview]
Message-ID: <af36e6cd-f649-5ef5-ecdb-19555833b5d4@selasky.org> (raw)
In-Reply-To: <20230113164131.swif4buln2py7tyl@meerkat.local>

On 1/13/23 17:41, Konstantin Ryabitsev wrote:
> It doesn't matter how it works behind the scenes as long as the produced hash
> is not unique (and CRC gives you no assurance of being unique). Git is built
> on the concept that every object has a unique hash. If this is no longer true,
> then it's literally no longer git, but is something else.

That's why I say you need a fixup field, in case of collisions. CRC is 
used plenty all over the place and has good entropy.

--HPS

  reply	other threads:[~2023-01-13 16:49 UTC|newest]

Thread overview: 42+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-01-13 12:59 Gitorious should use CRC128 / 256 / 512 instead of SHA-1 Hans Petter Selasky
2023-01-13 13:30 ` Konstantin Khomoutov
2023-01-13 13:39   ` Hans Petter Selasky
2023-01-13 14:21     ` rsbecker
2023-01-13 14:42       ` Hans Petter Selasky
2023-01-13 15:45         ` Konstantin Ryabitsev
2023-01-13 15:50           ` Hans Petter Selasky
2023-01-13 15:56             ` rsbecker
2023-01-13 16:02               ` Hans Petter Selasky
2023-01-13 15:54           ` Hans Petter Selasky
2023-01-13 16:02             ` Konstantin Ryabitsev
2023-01-13 16:06               ` Hans Petter Selasky
2023-01-13 16:18                 ` Hans Petter Selasky
2023-01-13 16:36                   ` Konstantin Ryabitsev
2023-01-13 16:44                     ` Hans Petter Selasky
2023-01-13 16:49                       ` Konstantin Ryabitsev
2023-01-13 16:51                         ` Hans Petter Selasky
2023-01-13 16:27                 ` Konstantin Ryabitsev
2023-01-13 16:30                   ` Hans Petter Selasky
2023-01-13 16:35                   ` Hans Petter Selasky
2023-01-13 16:41                     ` Konstantin Ryabitsev
2023-01-13 16:45                       ` Hans Petter Selasky [this message]
2023-01-13 15:15       ` Hans Petter Selasky
2023-01-13 17:44       ` Philip Oakley
2023-01-13 15:30     ` Konstantin Khomoutov
2023-01-13 15:39     ` Konstantin Ryabitsev
  -- strict thread matches above, loose matches on Subject: below --
2023-01-13 13:23 Hans Petter Selasky
2023-01-14 23:59 ` brian m. carlson
2023-01-15  3:14   ` Junio C Hamano
2023-01-15 10:09   ` demerphq
2023-01-16  7:21   ` Hans Petter Selasky
2023-01-16  7:23   ` Hans Petter Selasky
2023-01-16 12:34     ` rsbecker
2023-01-16 14:01       ` Hans Petter Selasky
2023-01-16 15:06         ` Junio C Hamano
2023-01-15 13:53 ` Michal Suchánek
2023-01-16  7:17   ` Hans Petter Selasky
2023-01-16  9:13     ` Michal Suchánek
2023-01-16  9:55       ` Hans Petter Selasky
2023-01-16 12:31         ` rsbecker
2023-01-16 14:10           ` Hans Petter Selasky
2023-01-16 19:08         ` Michal Suchánek

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

  List information: http://vger.kernel.org/majordomo-info.html

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=af36e6cd-f649-5ef5-ecdb-19555833b5d4@selasky.org \
    --to=hps@selasky.org \
    --cc=git@vger.kernel.org \
    --cc=konstantin@linuxfoundation.org \
    --cc=rsbecker@nexbridge.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
Code repositories for project(s) associated with this public inbox

	https://80x24.org/mirrors/git.git

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).