Re: [Enigmail] Resolutions of photo for public key

2018-03-10 Thread Robert J. Hansen
> No matter what the size of your photo is, in Enigmail your photo will be
> reduced to at most 100x120 px. Other applications may choose to display
> larger images though.

Historically, photo IDs were 120x144.  I think PGP 8 allowed for 240x288.




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Re: [Enigmail] Resolutions of photo for public key

2018-03-10 Thread Patrick Brunschwig
On 10.03.18 12:08, Marco A.G.Pinto wrote:
> Hello!
> 
> What are the resolutions for adding photos to the public key?

The OpenPGP standard does not define any limit in terms of
size/resolution for photos in your public key. The only requirement is
that the photo be a JPEG picture. As it's possible to add more than 1
photo to a public key, you can put a gallery of your whole life in high
resolution into your key.

However, that's not reasonable. Your public key will grow more or less
exactly by the size of your photo. That is, if you like to have a 3 MB
public key, then go ahead. I recommend you don't.

> I want soon to create a public key with curve 25519 and want the biggest
> photo possible in it.
> 
> I believe this information should be written somewhere and that Enigmail
> should also probably show the resolution in the key properties.

No matter what the size of your photo is, in Enigmail your photo will be
reduced to at most 100x120 px. Other applications may choose to display
larger images though.

-Patrick



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