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Hi, |
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|
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This one would be committed once new sys-apps/portage release is wrapped |
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up and hits ~arch. |
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|
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--- |
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Title: Portage rsync tree verification |
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Author: Michał Górny <mgorny@g.o> |
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Posted: 2018-01-xx |
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Revision: 1 |
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News-Item-Format: 2.0 |
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Display-If-Installed: <sys-apps/portage-2.3.21 |
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|
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Starting with sys-apps/portage-2.3.22, Portage enables strong |
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cryptographic verification of the Gentoo rsync tree by default. |
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This aims to prevent malicious third parties from altering the contents |
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of the ebuild repository received by our users. |
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|
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The verification is implemented using app-portage/gemato. Currently, |
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the whole repository is verified after syncing. On systems with slow |
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hard drives, this could take around 2 minutes. If you wish to disable |
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it, you can disable the 'rsync-verify' flag on sys-apps/portage |
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or set 'sync-rsync-verify-metamanifest = no' in your repos.conf. |
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|
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Please note that the verification currently does not prevent Portage |
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from using the repository after syncing. If 'emerge --sync' fails, |
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do not install any packages and retry syncing. In case of prolonged |
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or frequent verification failures, please make sure to report a bug |
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including the failing mirror addresses (found in emerge.log). |
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|
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The verification uses keys provided by the app-crypt/gentoo-keys |
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package. The keys are refreshed from the keyserver before every use |
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in order to check for revocation. The post-sync verification ensures |
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that the key package is verified itself. However, manual verification |
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is required before the first use. |
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|
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On new Gentoo installations including portage-2.3.22, the verification |
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of the keys will be covered by verifying the installation media |
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and repository snapshot signatures. On existing installations, you need |
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to manually compare the primary key fingerprint (reported by gemato |
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on every sync) against the official Gentoo keys [1]. An example gemato |
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output is: |
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|
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INFO:root:Valid OpenPGP signature found: |
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INFO:root:- primary key: 1234567890ABCDEF1234567890ABCDEF12345678 |
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INFO:root:- subkey: FEDCBA0987654321FEDCBA0987654321FEDCBA09 |
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|
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The primary key printed must match 'Gentoo Portage Snapshot Signing Key' |
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on the site. Please make sure to also check the certificate used |
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for the secure connection to the site! |
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|
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[1]:https://www.gentoo.org/downloads/signatures/ |
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--- |
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|
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-- |
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Best regards, |
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Michał Górny |
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