From cjamthagen at gmx.com Sat Aug 1 10:46:59 2015 From: cjamthagen at gmx.com (Christopher Jamthagen) Date: Sat, 1 Aug 2015 12:46:59 +0200 Subject: [Lightning-dev] Stealing money from a hub? In-Reply-To: <1F46EAD4-2B7C-46E7-B803-FF6BB14075C4@gmail.com> References: <87oaiunz8j.fsf@rustcorp.com.au> <87bnetnr5j.fsf@rustcorp.com.au> <0FD75A18-81F1-4C72-B430-F32A35E14475@gmail.com> , <1F46EAD4-2B7C-46E7-B803-FF6BB14075C4@gmail.com> Message-ID: ? ? > Sent:?Saturday, August 01, 2015 at 12:41 PM > From:?"Eric Lombrozo" > To:?"Christopher Jamthagen" > Cc:?"Rusty Russell" , "lightning-dev at lists.linuxfoundation.org" > Subject:?Re: [Lightning-dev] Stealing money from a hub? >> On Aug 1, 2015, at 3:30 AM, Christopher Jamthagen wrote: >> >>> Sent: Saturday, August 01, 2015 at 11:57 AM >>> From: "Eric Lombrozo" >>> To: "Rusty Russell" >>> Cc: "Christopher Jamthagen" , "lightning-dev at lists.linuxfoundation.org" >>> Subject: Re: [Lightning-dev] Stealing money from a hub? >> >> >> >>> On Jul 30, 2015, at 4:48 PM, Rusty Russell wrote: >>> But I realized yesterday, outsourcing needs a new sighash op mode (or >>> normalized txids), so it's not really something to design a deployable >>> system around today. >>> Can you elaborate on this, Rusty? >> >> We wont know the txid of the revoked commitment transaction until the cheater signs and broadcasts it, thus we cannot pre-sign the stealing transaction for the third party. > Got it. I suppose it would still be possible to have the third party notify you and request a signature when it occurs so that your device doesn?t have to sit and monitor the network and do the > filtering, etc... Once notified I could just sign the stealing transaction and take all the money myself.