this post was submitted on 09 Jan 2026
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Privacy

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A little help with GnuPG (lemmy.world)
submitted 2 weeks ago by MITM0@lemmy.world to c/privacy@lemmy.dbzer0.com
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I want to some guidance.

So let's say you created a PGP key & then proceeded to create 2 subkeys. Is it possible to just export the particular subkeys only. (let's say one for encryption & the other for signing) for OTHERS to import into their keyring for authentication & encryption ?

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[โ€“] MITM0@lemmy.world 1 points 17 hours ago (1 children)

Let's say I had a primary key that has a validity of 1 year & I didn't want to share that & instead sign messages with my sub-keys for let's say 4 months & use different sets of Subkeys with a validity of 4 months.

[โ€“] ken@discuss.tchncs.de 1 points 10 minutes ago* (last edited 9 minutes ago)

What purpose does (certifying with) the primary key serve there if you don't disclose it prior to rotation? What do you gain by not disclosing it when its only used in this context? It may be you haven't thought it through fully but otherwise sounds like you can get what you want by separate primary keys which you then manually --sign-key between on demand.