Apkindex format: Difference between revisions

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= The APKINDEX.tar.gz format =
#REDIRECT [[Apk_spec]]
From apk-tools-2.0_pre15 there was added support for package signing. The caused the index format to chage, as it needs to contain a signature for the repository. This document explains how the new index works and how it is created. This is intended to be a reference for abuild developers. Other developers should use the tools provided from abuild.
== Creating APKINDEX.tar.gz ==
The APKINDEX.tar.gz is created by concatenating 2 other tar.gz files, signature.tar.gz and APKINDEX.unsigned.tar.gz.
{{Cmd|cat signature.tar.gz APKINDEX.unsigned.tar.gz > APKINDEX.tar.gz}}
=== Creating signature.tar.gz ===
First we create a signature file for APKINDEX.unsigned.tar.gz, using our [[Creating_keys_for_package_signing|private key]].
{{Cmd|openssl dgst -sha1 -sign ''privatekeyfile'' -out .SIGN.RSA.''nameofpublickey'' APKINDEX.unsigned.tar.gz}}
Then we put this in a tar file, without the ''end-of-tar'' record at the end of the file. This is because we will concatenate this tar archive with the index tar archive.
tar -c .SIGN.RSA.''nameofpublickey'' | abuild-tar --cut | gzip -9 > signature.tar.gz
The name of public key should be the email address of the developer.
=== Creating APKINDEX.unsigned.tar.gz ===
The APKINDEX.unsigned.tar.gz is an old 1.9 style index file in a tar archive. This is created with:
{{Cmd|apk index -o APKINDEX.unsigned.tar.gz *.apk}}

Latest revision as of 01:38, 18 July 2022

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