At a command prompt type:
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gpg --edit-key <keyID> addphoto
GnuPG suggests a resolution of 240x288. PGP suggests 120x144. Both recommend JPEGs <= 7KB in size.
How do PhotoID's work?
A jpeg image is treated as an additional UserID, eg
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pub 1024D/608D2A10 created: 2003-03-06 expires: never usage: SC
trust: ultimate validity: ultimate
sub 2048g/EF4010D2 created: 2003-03-06 expires: never usage: E
[ultimate] (1). John P. Clizbe <JPClizbe@Earthling.nyet>
[ultimate] (2) [jpeg image of size 4563]
It is included in an ASCII armored key if it is present at the time of export.
It will be downloaded from a keyserver if it was included in a key that was sent to a keyserver, either by the key owner or a second party.
It will be included in your key, if present, when you send your key to a recipient in an email whether inline or attaching an exported key file (.asc).
It will likewise be included if sent to a keyserver.
Signing an email (or any other file) with OpenPGP does not automatically include your key with the signature (S/MIME does however).
There is no mechanism in OpenPGP for selecting which key UIDs are included in a key export or send operation. If present in the key, they are included. Once on a keyserver, they are there *forever*, even if revoked.
If you add an image, consider that it will eventually be available worldwide from any keyserver.
This item was created from a post by John Clizbe to the Enigmail Mailing List.
