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Date: Tue, 18 Oct 2022 12:42:21 +0000
From: Andrew Poelstra <apoelstra@wpsoftware.net>
To: Bryan Bishop <kanzure@gmail.com>,
Bitcoin Protocol Discussion <bitcoin-dev@lists.linuxfoundation.org>
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Subject: Re: [bitcoin-dev]
=?utf-8?q?Trustless_Address_Server_=E2=80=93_Outsou?=
=?utf-8?q?rcing_handing_out_addresses_to_prevent_address_reuse?=
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On Mon, Oct 17, 2022 at 07:07:07PM -0500, Bryan Bishop via bitcoin-dev wrot=
e:
>=20
> Isn't this the same problem but now for copy-pasting pubkeys instead of an
> address?
>
No, as I understand the proposal, the "public key" held by the wallet is si=
mply
a signing key used to authenticate addresses, and never leaves the wallet. =
Yes,
if the wallet's own memory is compromised, it can be tricked into accepting=
bad
addresses, but this is much much harder than compromising data on the clipb=
oard,
which basically any application can do without any "real" exploits or speci=
al
permissions.
As an extreme, this proposal could be run on a hardware wallet which had so=
me
out-of-band way to obtain and authenticate public keys (similar to Signal QR
codes).
--=20
Andrew Poelstra
Director of Research, Blockstream
Email: apoelstra at wpsoftware.net
Web: https://www.wpsoftware.net/andrew
The sun is always shining in space
-Justin Lewis-Webster
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