From: <rsbecker@nexbridge.com>
To: "'Hans Petter Selasky'" <hps@selasky.org>,
"'Konstantin Ryabitsev'" <konstantin@linuxfoundation.org>
Cc: <git@vger.kernel.org>
Subject: RE: Gitorious should use CRC128 / 256 / 512 instead of SHA-1
Date: Fri, 13 Jan 2023 10:56:35 -0500 [thread overview]
Message-ID: <00b201d92767$a0403ee0$e0c0bca0$@nexbridge.com> (raw)
In-Reply-To: <6061d012-13b7-ca4b-5556-70875b65c887@selasky.org>
On January 13, 2023 10:50 AM, Hans Petter Selasky wrote:
>On 1/13/23 16:45, Konstantin Ryabitsev wrote:
>> I think you're misunderstanding some of the core principles of git.
>
>Maybe, I'm usually commandering git via the terminal.
>
>But if you say you can already edit stuff, why does the commit hash need to be
>cryptographic? I don't get that part. Yeah, I think of git commits like blockchain.
git is using SHA1/SHA256 (which happen to be coincidentally cryptographic) as message digests with a very low probability of collisions when the hashes are computed. There is never a situation, implied by cryptography, where there is a decode of a git hash. In order to make git a blockchain, you would need to implement central signing authorities, which would require a fork if the signature mechanism changes. The signature mechanism (SSH, GPG) is distinct from hash computation in git's trees, but depends on hash integrity.
next prev parent reply other threads:[~2023-01-13 16:06 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 [this message]
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
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
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