Ah this has all just clicked with me, using Diffie-Hellman to create a
shared secret then using that to encrypt the nonce.
This could also be used for generating a temporary/disposable aes key for
encrypting messages between people.
satoshi mentioned that storing data in the blockchain or anywhere publicly
might be a bad idea as if you had your private key compromised then all the
data would be revealed.
https://bitcointalk.org/index.php?topic=25.msg159#msg159 (post 10)
Doing private messages/etc over twister or another distributed platform
this is probably a good way to do it securely without having your key
attached to every message that is sent.
Thanks
Bob
On 15 January 2014 12:33, Amir Taaki <genjix@???> wrote:
> some code: https://gist.github.com/jspilman/8396495
>
> On 15/01/14 03:57, Thomas Hartman wrote:
> > Awesome if true.
> >
> > On Jan 14, 2014 5:38 PM, "Amir Taaki" <genjix@???
> > <mailto:genjix@riseup.net>> wrote:
> >
> > I'm not sure that's true (asked Peter about it):
> >
> > <petertodd> stealth addresses are "I give you a chain code, you
> > derive new
> > pubkeys with random 32-byte nonces, and then encrypt that nonce in
> > the tx
> > itself so I can decrypt it and recover the funds"
> >
> > if so then combined with CoinJoin this is holy-grail, and we don't
> > need to
> > worry about Twister/XMPP/BitMessage for transmitting secrets around.
> >
> > > So sad that you're fed up with me.
> > >
> > > This seems great for fairly anonymous payments.
> > >
> > > My only problem is if the deterministic offset n is encoded in the
> > paying
> > > transaction then anyone else you also gave that mpk to, will also
> > see the
> > > address.
> > >
> > > So I still really prefer some solution where payment addresses are
> > > contracted and signed by a key, for either a one off payment or a
> > sequence
> > > of payments over a period.
> > >
> > > Thanks
> > > Bob
> > > On 14 Jan 2014 00:31, "Nicolás Mendoza" <nicolasmendo@???
> > <mailto:nicolasmendo@gmail.com>> wrote:
> > >
> > >> Thanks for using Drak in your example, I'm fed up with Bob and
> Alice
> > >>
> > >>
> > >> On Tue, Jan 14, 2014 at 5:29 AM, Amir Taaki <genjix@???
> > <mailto:genjix@riseup.net>> wrote:
> > >>
> > >>> great, thanks for showing me this. I know the basic idea. The
> only
> > >>> thing
> > >>> I'd add is that once you know the nonce, that the payor doesn't
> > need to
> > >>> recreate these txs repeatedly. So when I pay Drak, I only need
> to do
> > >>> this the first ever time I pay Drak.
> > >>>
> > >>> On 13/01/14 19:49, Drak wrote:
> > >>> > Have you guys seen this discussion on the bitcoin mailing list
> > (and
> > >>> now
> > >>> > there is a working
> > >>> > implementation):
> > >>> http://sourceforge.net/mailarchive/message.php?msg_id=31813471
> > >>> >
> > >>> > Seems to be a major step forward in terms of privacy. Probably
> > needs
> > >>> a
> > >>> > few more technical eyes on it but it looks really promising.
> > >>> >
> > >>> > Drak
> > >>> >
> > >>> >
> > >>> > _______________________________________________
> > >>> > unSYSTEM mailing list: http://unsystem.net
> > >>> >
> https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/unsystem
> > >>> >
> > >>>
> > >>>
> > >>> _______________________________________________
> > >>> unSYSTEM mailing list: http://unsystem.net
> > >>> https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/unsystem
> > >>>
> > >>>
> > >>
> > >>
> > >> --
> > >> Nicolas Mendoza
> > >>
> > >> PhD Researcher
> > >> School of Creative Media
> > >> City University of Hong Kong
> > >> China PDR - HKSAR
> > >>
> > >>
> > >> _______________________________________________
> > >> unSYSTEM mailing list: http://unsystem.net
> > >> https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/unsystem
> > >>
> > >>
> > > _______________________________________________
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> > >
> >
> >
> > _______________________________________________
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> >
> >
> >
> > _______________________________________________
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> >
>
>
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