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Hi all, |
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|
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One of the items that has come up in the Git conversion, and needs some |
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attention. |
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|
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Previously, the PORTAGE_GPG_KEY variable has allowed ANY argument, and |
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passed it to GPG, letting GPG use that. This was intended to explicitly |
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be a unique identifier for a key (or subkey). |
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|
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However, it seems that there are signed commits with other values in the |
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variable, and instead of something nice like: |
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(Portage version: 2.2.0_alpha138/cvs/Linux x86_64, signed Manifest commit |
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with key 0x586A3B1F) |
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We have commits with: |
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(Portage version: 2.2.0_alpha138/cvs/Linux x86_64, signed Manifest commit |
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with key emailaddress) |
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|
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This makes validation harder, as we need to extract the identity of the |
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key from the Manifest before we can proceed. Additionally, if a |
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developer has multiple keys, possibly over time, we cannot use this |
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string to identify what key was used easily. |
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|
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As such, we've decided to make the PORTAGE_GPG_KEY strictly enforce what |
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was originally intended. |
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|
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- You must specify a key or subkey exactly. |
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- The leading "0x" is optional. |
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- If you want to use a subkey, per the PGP specifications, you must |
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suffix your keyid with "!". |
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- Your keyid is exactly: 8, 16, 24, 32 xor 40 hexdigits long. |
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|
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Additionally, while we are NOT enforcing the use of long key-ids |
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presently, I strongly encourage ALL developers to move to using them, |
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due to known attacks against short ids: |
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http://www.asheesh.org/note/debian/short-key-ids-are-bad-news.html |
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Long key-ids are the 16/24/32 hexdigit long versions of your key ids. |
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Using your full fingerprint (40 hexdigit) is also possible, but doesn't |
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allow you to select a subkey (subkeys don't have a full fingerprint). |
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Additionally, we'll be chasing up LDAP to convert all entries there to |
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long key-ids. |
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|
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Examples: |
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--------- |
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Recommended: |
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PORTAGE_GPG_KEY='0123456789ABCEF' |
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PORTAGE_GPG_KEY='0123456789ABCEF!' |
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PORTAGE_GPG_KEY='0x0123456789ABCEF' |
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PORTAGE_GPG_KEY='0x0123456789ABCEF!' |
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|
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Valid, but not recommended: |
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PORTAGE_GPG_KEY='01234567' |
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PORTAGE_GPG_KEY='ABCDEF01!' |
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PORTAGE_GPG_KEY='0x01234567' |
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PORTAGE_GPG_KEY='0xABCDEF01!' |
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PORTAGE_GPG_KEY='0123456789ABCEF0123456789ABCEF0123456789' |
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|
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Invalid: |
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PORTAGE_GPG_KEY='username' |
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PORTAGE_GPG_KEY='username@××××××.com' |
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|
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-- |
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Robin Hugh Johnson |
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Gentoo Linux: Developer, Trustee & Infrastructure Lead |
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E-Mail : robbat2@g.o |
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GnuPG FP : 11ACBA4F 4778E3F6 E4EDF38E B27B944E 34884E85 |
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