From: "Miguel Ángel Arruga Vivas" <rosen644835@gmail.com>
To: 45675@debbugs.gnu.org
Subject: bug#45675: Zip-based archives store timestamps
Date: Tue, 05 Jan 2021 14:10:37 +0100 [thread overview]
Message-ID: <877dor34xe.fsf@gmail.com> (raw)
A procedure like reset-gzip-timestamp should be useful for
reproducibility purposes, adapted to zip based archives as Smalltalk's
STAR or Java's JAR binary formats, as some or all of their contents are
generated usually at build time.
On the latest Zip specification[1], which only seem to be encumbered
regarding encryption, there is one header ID which could be used for
timestamp purposes (0x0020) but third party header IDs are allowed,
which include a "commonly used" 0x5455 timestamp.
[1] https://pkware.cachefly.net/webdocs/APPNOTE/APPNOTE-6.3.8.TXT
next reply other threads:[~2021-01-05 13:11 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-05 13:10 Miguel Ángel Arruga Vivas [this message]
2021-01-05 15:17 ` bug#45675: Zip-based archives store timestamps Julien Lepiller
2021-01-06 22:34 ` Miguel Ángel Arruga Vivas
2021-01-06 23:10 ` Julien Lepiller
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
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=877dor34xe.fsf@gmail.com \
--to=rosen644835@gmail.com \
--cc=45675@debbugs.gnu.org \
/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 external index
https://git.savannah.gnu.org/cgit/guix.git
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.