[Bitcoin-development] Proposal to address Bitcoin malware

Mike Hearn mike at plan99.net
Mon Feb 2 17:59:54 UTC 2015


We're way ahead of you guys ;)

On Mon, Feb 2, 2015 at 6:54 PM, Martin Habovštiak <
martin.habovstiak at gmail.com> wrote:

> Good idea. I think this could be even better:
>
> instead of using third party, send partially signed TX from computer
> to smartphone. In case, you are paranoid, make 3oo5 address made of
> two cold storage keys, one on desktop/laptop, one on smartphone, one
> using third party.
>

https://www.bitcoinauthenticator.org/      - does this already, currently
in alpha


> > It should be possible to use multisig wallets to protect against
> malware.  For example, a user could generate a wallet with 3 keys and
> require a transaction that has been signed by 2 of those keys.  One key is
> placed in cold storage and anther sent to a third-party.
>

BitGo, CryptoCorp and (slight variant) GreenAddress all offer this model.
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