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References: <55AFBBE6.3060702@electrum.org> <1437606706.2688.0.camel@yahoo.com>
<114b2a76-ebc7-461a-b4bc-10873574d6c4@HUB2.rwth-ad.de>
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From: Stefan Richter <richter@cs.rwth-aachen.de>
Date: Thu, 23 Jul 2015 12:23:35 +0000
Message-ID: <CAH+=Z+Xt4mja348Rg5Ot0u1VeCnVxm0wkVUA3GVgryZ4Yp4QNw@mail.gmail.com>
To: Eric Voskuil <eric@voskuil.org>, gb <kiwigb@yahoo.com>,
Thomas Voegtlin <thomasv@electrum.org>
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Cc: bitcoin-dev@lists.linuxfoundation.org
Subject: Re: [bitcoin-dev] Making Electrum more anonymous
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This looks like a prime application for this PIR library:
http://percy.sourceforge.net/apidocs/index.html
Eric Voskuil via bitcoin-dev <bitcoin-dev@lists.linuxfoundation.org>
schrieb am Do., 23. Juli 2015 um 02:07 Uhr:
> This is a good point. I didn't delve into the specifics of
> implementation due to the larger issues that I raised. Libbitcoin Server
> uses CurveZMQ, an implementation of CurveCP.
>
> http://curvecp.org
> http://curvezmq.org
> https://en.bitcoin.it/wiki/Libbitcoin_Server
>
> e
>
> On 07/22/2015 04:11 PM, gb via bitcoin-dev wrote:
> > Why RSA?
> >
> >>
> >> Here is an idea, inspired by TOR, on which I would like to have some
> >> feedback: We create an anonymous routing layer between Electrum servers
> >> and clients.
> >>
> >> * Each server S publishes a RSA public key, KS
> >> * Each client receives a list of available servers and their pubkeys
> >> * For each wallet address, addr_i, a client chooses a server S_i, and a
> >> RSA keypair (K_addr_i, k_addr_i)
> >> * The client creates a list of encrypted requests. Each request contains
> >> addr_i and K_addr_i, and is encrypted with the pubkey KS_i of S_i
> >> * The client chooses a main server M, and sends the list of encrypted
> >> requests to M
> >> * M dispatches the client's requests to the corresponding servers S_i
> >> (without the client's IP address.)
> >> * Each server decrypts the requests it receives, performs the request,
> >> and encrypts the result with K_addr_i
> >> * M receives encrypted responses, and forwards them to the client.
> >> * The client decrypts the encrypted response with k_addr_i
>
> _______________________________________________
> bitcoin-dev mailing list
> bitcoin-dev@lists.linuxfoundation.org
> https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev
>
--001a11c3674c623639051b89f5d3
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable
<div dir=3D"ltr">This looks like a prime application for this PIR library:=
=C2=A0<a href=3D"http://percy.sourceforge.net/apidocs/index.html">http://pe=
rcy.sourceforge.net/apidocs/index.html</a></div><br><div class=3D"gmail_quo=
te"><div dir=3D"ltr">Eric Voskuil via bitcoin-dev <<a href=3D"mailto:bit=
coin-dev@lists.linuxfoundation.org">bitcoin-dev@lists.linuxfoundation.org</=
a>> schrieb am Do., 23. Juli 2015 um 02:07=C2=A0Uhr:<br></div><blockquot=
e class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc sol=
id;padding-left:1ex">This is a good point. I didn't delve into the spec=
ifics of<br>
implementation due to the larger issues that I raised. Libbitcoin Server<br=
>
uses CurveZMQ, an implementation of CurveCP.<br>
<br>
<a href=3D"http://curvecp.org" rel=3D"noreferrer" target=3D"_blank">http://=
curvecp.org</a><br>
<a href=3D"http://curvezmq.org" rel=3D"noreferrer" target=3D"_blank">http:/=
/curvezmq.org</a><br>
<a href=3D"https://en.bitcoin.it/wiki/Libbitcoin_Server" rel=3D"noreferrer"=
target=3D"_blank">https://en.bitcoin.it/wiki/Libbitcoin_Server</a><br>
<br>
e<br>
<br>
On 07/22/2015 04:11 PM, gb via bitcoin-dev wrote:<br>
> Why RSA?<br>
><br>
>><br>
>> Here is an idea, inspired by TOR, on which I would like to have so=
me<br>
>> feedback: We create an anonymous routing layer between Electrum se=
rvers<br>
>> and clients.<br>
>><br>
>> * Each server S publishes a RSA public key, KS<br>
>> * Each client receives a list of available servers and their pubke=
ys<br>
>> * For each wallet address, addr_i, a client chooses a server S_i, =
and a<br>
>> RSA keypair (K_addr_i, k_addr_i)<br>
>> * The client creates a list of encrypted requests. Each request co=
ntains<br>
>> addr_i and K_addr_i, and is encrypted with the pubkey KS_i of S_i<=
br>
>> * The client chooses a main server M, and sends the list of encryp=
ted<br>
>> requests to M<br>
>> * M dispatches the client's requests to the corresponding serv=
ers S_i<br>
>> (without the client's IP address.)<br>
>> * Each server decrypts the requests it receives, performs the requ=
est,<br>
>> and encrypts the result with K_addr_i<br>
>> * M receives encrypted responses, and forwards them to the client.=
<br>
>> * The client decrypts the encrypted response with k_addr_i<br>
<br>
_______________________________________________<br>
bitcoin-dev mailing list<br>
<a href=3D"mailto:bitcoin-dev@lists.linuxfoundation.org" target=3D"_blank">=
bitcoin-dev@lists.linuxfoundation.org</a><br>
<a href=3D"https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev" =
rel=3D"noreferrer" target=3D"_blank">https://lists.linuxfoundation.org/mail=
man/listinfo/bitcoin-dev</a><br>
</blockquote></div>
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