> On Oct 16, 2020, at 08:46, Skip Carter <s...@taygeta.com> wrote:
> 
> What are the characteristics of a poison key ?

A large number of bogus 3rd party signatures applied to the public key and 
uploaded to the network

> What makes it bad ?

The key size becomes too large for GPG to process it

> I wonder if there is an algorithmic way to deal with them instead of a
> blacklist.

This has been discussed to death on the list previously. Check the archives if 
you’d like more info. The short answer is no due to a lack of development 
resources. GNUPG has already mitigated against this by stripping 3rd party 
signatures & numerous GPG implementations have also moved to keys.openpgp.org 
<http://keys.openpgp.org/> as the default keyserver in response to this issue.

-T

> --
> Dr Everett (Skip) Carter  0xF29BF36844FB7922
> s...@taygeta.com
> 
> Taygeta Scientific Inc
> 607 Charles Ave
> Seaside CA 93955
> 831-641-0645 x103
> 
> 

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