What is wrong with 0xC4739D2D?

Daniel Kahn Gillmor dkg at fifthhorseman.net
Fri Feb 8 23:35:06 CET 2013

On 02/08/2013 05:28 PM, folkert wrote:
> 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.


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