Re: [bitcoin-dev] Emergency Deployment of SegWit as a partial mitigation of CVE-2017-9230

2017-05-31 Thread Eric Voskuil via bitcoin-dev
On 05/29/2017 04:19 AM, Anthony Towns wrote: > On Sat, May 27, 2017 at 01:07:58PM -0700, Eric Voskuil via bitcoin-dev wrote: >> Anthony, >> For the sake of argument: > > (That seems like the cue to move any further responses to bitcoin-discuss) I didn't meant to imply that the point was academic,

Re: [bitcoin-dev] Emergency Deployment of SegWit as a partial mitigation of CVE-2017-9230

2017-05-29 Thread Anthony Towns via bitcoin-dev
On Sat, May 27, 2017 at 01:07:58PM -0700, Eric Voskuil via bitcoin-dev wrote: > Anthony, > For the sake of argument: (That seems like the cue to move any further responses to bitcoin-discuss) > (1) What would the situation look like if there was no patent? If there were no patent, and it were ea

Re: [bitcoin-dev] Emergency Deployment of SegWit as a partial mitigation of CVE-2017-9230

2017-05-27 Thread Eric Voskuil via bitcoin-dev
-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 Anthony, For the sake of argument: (1) What would the situation look like if there was no patent? (2) Would the same essential formulation exist if there had been a patent on bitcoin mining ASICs in general? (3) Would an unforeseen future patente

Re: [bitcoin-dev] Emergency Deployment of SegWit as a partial mitigation of CVE-2017-9230

2017-05-27 Thread Anthony Towns via bitcoin-dev
On Fri, May 26, 2017 at 11:02:27AM +0300, Cameron Garnham via bitcoin-dev wrote: > If one assumes that the 67% of the hash rate that refuse to signal > for SegWit are using ASICBOOST. The entire picture of this political > stalemate became much more understandable. A couple of bits of math that mi

Re: [bitcoin-dev] Emergency Deployment of SegWit as a partial mitigation of CVE-2017-9230

2017-05-26 Thread Cameron Garnham via bitcoin-dev
Hello Eric, Thank you for your question and your time off-list clarifying your position. I’m posting to the list so that a wider audience may benefit. Original Question: ‘Presumably the "very serious security vulnerability" posed is one of increased centralization of hash power. Would this dang

Re: [bitcoin-dev] Emergency Deployment of SegWit as a partial mitigation of CVE-2017-9230

2017-05-26 Thread Tom Zander via bitcoin-dev
On Friday, 26 May 2017 16:39:30 CEST Erik Aronesty wrote: > Linking a bit4 MASF with a bit4 "lock in of a hard fork in 6 months" is > something that will simply never happen for basic engineering reasons. The modifications to Bitcoin Core would take at most a day to do, plus a week to test. I’m n

Re: [bitcoin-dev] Emergency Deployment of SegWit as a partial mitigation of CVE-2017-9230

2017-05-26 Thread Erik Aronesty via bitcoin-dev
Linking a bit4 MASF with a bit4 "lock in of a hard fork in 6 months" is something that will simply never happen for basic engineering reasons. Spoonet, an oft-quoted hard fork that actually has some strong support, is a much better candidate for the code base - but not of the supposed supporters o

Re: [bitcoin-dev] Emergency Deployment of SegWit as a partial mitigation of CVE-2017-9230

2017-05-26 Thread Tom Zander via bitcoin-dev
On Friday, 26 May 2017 10:02:27 CEST Cameron Garnham via bitcoin-dev wrote: > So, I started searching for the motivations of such a large amount of the > mining hash-rate holding a position that isn’t at-all represented in the > wider Bitcoin Community. My study of ASICBOOST lead to a ‘bingo’ momen

Re: [bitcoin-dev] Emergency Deployment of SegWit as a partial mitigation of CVE-2017-9230

2017-05-26 Thread Eric Voskuil via bitcoin-dev
-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 Hi Cameron, Presumably the "very serious security vulnerability" posed is one of increased centralization of hash power. Would this danger exist without the patent risk? e On 05/26/2017 01:02 AM, Cameron Garnham via bitcoin-dev wrote: > Thank you

Re: [bitcoin-dev] Emergency Deployment of SegWit as a partial mitigation of CVE-2017-9230

2017-05-26 Thread Andreas M. Antonopoulos via bitcoin-dev
I rarely post here, out of respect to the mailing list. But since my name was mentioned... I much prefer Gregory Maxwell's proposal to defuse covert ASICBOOST (only) with a segwit-like commitment to the coinbase which does not obligate miners to signal Segwit or implement Segwit, thus disarming an

Re: [bitcoin-dev] Emergency Deployment of SegWit as a partial mitigation of CVE-2017-9230

2017-05-26 Thread Cameron Garnham via bitcoin-dev
Thank you for your reply Andreas, I can assure you that I have many motivations for activating SegWit. Before studding ASICBOOST I wanted to activate SegWit as it is a wonderful upgrade for Bitcoin. It seems to me that virtually the entire Bitcoin Ecosystem agrees with me. Except for around 67

[bitcoin-dev] Emergency Deployment of SegWit as a partial mitigation of CVE-2017-9230

2017-05-25 Thread Cameron Garnham via bitcoin-dev
Hello Bitcoin-Dev, CVE-2017-9230 (1) (2), or commonly known as ‘ASICBOOST’ is a severe (3) (4) and actively exploited (5) security vulnerability. To learn more about this vulnerability please read Jeremy Rubin’s detailed report: http://www.mit.edu/~jlrubin//public/pdfs/Asicboost.pdf Andreas