On Wed, Oct 16, 2013 at 6:21 AM, Pieter Hintjens <[email protected]> wrote:
> - a more secure hash, which we must truncate to fit the use case, e.g.
> first 6 bytes of SHA512 hash

6 bytes does not provide a sufficient security margin for key
verification. This is still well within the realm of a brute force
search.

PGP key IDs are not intended for the purposes of securely
authenticating keys. They are intended for a more Git-like purpose:
telling a small set of local keys apart.

You should still provide a secure digest for authenticating public keys.

-- 
Tony Arcieri
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