bug-guix
[Top][All Lists]
Advanced

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

bug#45675: Zip-based archives store timestamps


From: Julien Lepiller
Subject: bug#45675: Zip-based archives store timestamps
Date: Tue, 05 Jan 2021 10:17:53 -0500
User-agent: K-9 Mail for Android

For java packages, we have a strip-jar-timestamps phase in the ant-build-system.

Le 5 janvier 2021 08:10:37 GMT-05:00, "Miguel Ángel Arruga Vivas" <rosen644835@gmail.com> a écrit :
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




reply via email to

[Prev in Thread] Current Thread [Next in Thread]