What is wrong with 0xC4739D2D?

folkert folkert at vanheusden.com
Sat Feb 9 01:48:58 CET 2013


> > There's this key, 0xC4739D2D, and it is not usable for encryption:
> > $ gpg --encrypt -r C4739D2D foobar.txt
> > gpg: c4739d2d: skipped: unusable public key
> > gpg: foobar.txt encryption failed: unusable public key
> > 
> > It can be used for signing I found.
> 
> There is nothing wrong with this key.  It is a single primary key with
> no subkeys attached.  the primary key is marked with usage flags to
> indicate that it should be used for data signing and identity certification.
> There are no encryption capabilities, presumably because the keyholder
> wants to indicate that no one should encrypt anything to it.

So the holder should add a sub-key? Or can the holder change the usage
flags?


Folkert van Heusden

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