PGP Key Poisoner

Werner Koch wk at
Tue Aug 13 12:08:31 CEST 2019

On Tue, 13 Aug 2019 09:54, gnupg-users at said:

> The bug, however, is in the program that chokes on poisoned keys!

Nope.  This is a long standing DoS protection by limiting the total
length of a keyblock.  The diagnostics were a bit misleading, though.

The time it took to process all these signatures during importing is due
to a fix and out of order keyblock functions which has been enabled by
default in 2.1.  It should be obvious that checking several thousands of
signatures and finding the matching user-id takes its time.

Anyway, given that these keys are real the approach with 2.2.17 is to
auto-retry an import with import-clean etc. if the keyblock size hits
the size limit.  For keyserver imports import-clean is also the default.



Die Gedanken sind frei.  Ausnahmen regelt ein Bundesgesetz.
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