- From: Vlad Zamfir <vldzmfr@gmail.com>
- Date: Sun, 08 May 2016 17:02:44 +0000
- To: Neha Narula <narula@csail.mit.edu>, Daniel Buchner <dabuchne@microsoft.com>
- Cc: Mountie Lee <mountie@paygate.net>, "public-blockchain-workshop@w3.org" <public-blockchain-workshop@w3.org>, "public-blockchain@w3.org" <public-blockchain@w3.org>
- Message-ID: <CACdoB25EoB5ddeFu89isRAEhBmkdxe=T9fsQ=vCfdAENj9KSOQ@mail.gmail.com>
Neha, I also felt that this was out of scope, but I suppose that there are going to be two mailing lists, one for the chairs + program committee and one public mailing list. The workshop is meant to steer a standards process, so any discussion about standards that doesn't fall under "planning the agenda, soliciting positions and reviewing positions" would be inappropriate in a forum for planning the workshop. There's a clear opportunity for conflict of interest, there. I can spell it out if anyone needs me to, or it ends up being a problem. The public mailing list seems to be completely unstructured, on the other hand, and so far we've only received messages on the public list, as far as I can tell (list addresses have prefix "public-"). Also, be sure to look at this <https://www.w3.org/2016/04/blockchain-workshop/program-committee.html> list of responsibilities for the program committee, which includes participating in the public mailing list. Doug, could you please ping the planning list so we can start using it? Thanks! <3Vlad On Sun, May 8, 2016 at 8:28 AM Neha Narula <narula@csail.mit.edu> wrote: > I might have misunderstood the purpose of this mailing list, and its > discussions. I thought it was to discuss topics and coordination > details for the upcoming workshop happening in late June. Are you > suggesting this for a topic of the workshop, or am I on the wrong > mailing list? > > I'm new to the W3C, but it sounds like a lot of this is reinventing > parts of existing systems (DNS and PKIs). I'm happy to discuss > futuristic identity agent schemes, and have asked questions below. > > If we're talking about the workshop, then I think it makes sense to > talk about user wallets. Wallets (and by that I mean user-specific > key management for signing blockchain transactions) seem core to any > of this. > > On Sun, May 8, 2016 at 10:53 AM, Daniel Buchner <dabuchne@microsoft.com> > wrote: > > > > How do you propose that this "global blockchain identity" works? For > example: > > > > - Who signed the transaction creating this "global blockchain identity"? > > > > You generate a blockchain transaction that you hold the private/public > keys to. That transaction is encoded with a unique name, per a unified hash > format. The hash also includes a pointer to off-chain data. What you now > have is a recognizable, user-friendly name that a system like Blockstack > can index as a globally known name. The data off-chain is signed with the > same keys that own the name, thus anyone checking the data can clearly see > it is from the name owner. > > > > What you now have is provable identity, rooted in the trust of the > blockchain, which can have signed data linked to it for use by anyone you > allow. > > This sounds like DNS. It would be good to understand exactly what the > specific benefits are of this scheme over DNS. > > > - What happens if the entity that signed that is compromised? > > > > What happens any other time you give your private keys to someone? Short > answer: 1) don't do that 2) there are many mitigations, such as: multi-sig > social circle recovery, derivative keys that allow data update but are > separate from the actual name ownership keys. > > When developing any PKI system, we should plan on keys getting > compromised. So (1) is not a good answer. (2) should be fleshed out. > > > - If no one entity signed it, what keeps anyone from creating a "global > blockchain identity" for me against my wishes? > > > > The system can prove that they are not you, because you took the name by > registering it as a transaction before they did, and you have the private > keys to prove it. > > This also sounds a lot like the way domain names work on the web > today. We rely on applications like Google to navigate a reputation > system of backlinks and figure out how to distinguish between similar > sounding names. What's the equivalent in this scheme? If you haven't > seen it, I recommend taking a look at keybase.io. > > > - How does my device prove it has been authorized to transact on behalf > of this identity? > > > > Your off-chain data contains a record of your "Identity Agents", which > your identity container uses to check incoming payloads against. When a > CRUD op or signature request comes it, this layer makes sure the payload is > signed with the identity of someone or thing you have given agency to act > on certain fields. > > > > - If that device-proof is compromised, how do I revoke those keys? > > > > The device only has derivative keys or parts of a multi-factor scheme, > so you would lose your identity. You would message your identity container > using your private master key and it would then reset your identity data > and remove the offending agent/device. > > OK, so it sounds like there is still a need for user-wallets. This > might be a good place to start, independent of the rest of it. > > > > > I would appreciate pointers to information describing the design of such > a thing. Barring that, I think user wallets are a much simpler, more > reasonable thing to consider. > > > > Check this out: https://blockstack.org/docs/how-blockstack-works > > > > - Daniel > > > >> which the UA will understand > >> and use in transactions as an identity agent of the user, via its own > >> unique key. The identity system’s challenge and response loop can be > >> used to interact with sites, devices, etc., to perform all manner of > >> actions, such > >> as: user data storage, messaging, blockchain transactions, etc. > >> > >> > >> > >> The browser should be extended to do four things: > >> > >> > >> > >> · Form an agent relationship with a user’s blockchain identity > >> > >> · CRUD a user’s blockchain identity data as an allowed agent > >> > >> · Sign data on behalf of identity owners it is in agency with > >> > >> · Form basic blockchain transactions across chains > >> > >> > >> > >> With these four capabilities, almost anything you can imagine in the > >> realm of decentralized identity and app development becomes possible. > >> > >> > >> > >> - Daniel > >> > >> > >> > >> From: Mountie Lee [mailto:mountie@paygate.net] > >> Sent: Sunday, May 8, 2016 12:39 AM > >> To: public-blockchain-workshop@w3.org > >> Cc: public-blockchain@w3.org > >> Subject: Blockchain Private Key and Web Same-origin policy > >> > >> > >> > >> hi. > >> > >> > >> > >> let me raise issue for SOP and blockchain private key. > >> > >> > >> > >> when we expand usage of blockchain private to Web, > >> > >> Web SOP will cause some difficult issues. > >> > >> > >> > >> private key can be generated/stored in secure element of client side. > >> > >> user will have ownership of private key and related assets. > >> > >> when the usage of key is restricted to specific origin, > >> > >> that is different from normal user expectations. > >> > >> > >> > >> many user will think, "my money can be used on any site when I want" > >> > >> but with SOP, "your money can be used on this site only" > >> > >> > >> > >> SOP is important security policy of Web. > >> > >> because the previous thinking are "some resources are from some origins" > >> > >> but now we have more requirements letting user have full control of > >> assets which user has ownership. > >> > >> > >> > >> I need opinion for it. > >> > >> > >> > >> -- > >> > >> Mountie Lee > >> > >> PayGate > >> > >> CTO, CISSP > >> Tel : +82 2 2140 2700 > >> E-Mail : mountie@paygate.net > > > > > > > > -- > > > https://na01.safelinks.protection.outlook.com/?url=http%3a%2f%2fnehanaru.la&data=01%7c01%7cdabuchne%40microsoft.com%7cbf7a9d79c597471d68ff08d3774ea7ec%7c72f988bf86f141af91ab2d7cd011db47%7c1&sdata=gtrPWrykDnbwzMZnzSURkS%2fkKmggyqlb6IACd4D0JcE%3d > | @neha > > > > -- > http://nehanaru.la | @neha > >
Received on Monday, 9 May 2016 07:47:30 UTC