Chainsafe: Investigating privacy on Ethereum using ring signature based mixing - Elizabeth Banks

[Music] research so yeah so when my first site is basically the city soaring signature bass mixing materials is like a simple concept of privacy so basically our signature is to normally when you side and potentially it's signed by at 100 Paulo key so you know that the signature came from this person with a real signature the signature is created using a group of kids and then will be won by murder of the group actually creates the signature without all the signatures conformity can't tell from the outside who decided so basically if you decide the transaction is weighing stuff with just your own key you'll be able to like plausibly deny that you are involved in the transaction this is part of the way [Music] so tested so there are powers that was a user would submit a public key to the contract as well as the deposit this is positive things about either as well as the ring size then in the contract it probably says like 11 because that's when your users but so that after that amount of people has admitted public he hadn't faucet to the contracts that were enlisted poll that list public he's from the contrast and created a researcher so so the initial public that you have submitted it could be you got the receiver of this induction cause the corresponding private key so you would perhaps talk to the receiver beforehand there this video this way so all they talk to the recipe beforehand it's under public contracts person either then once the husband filled with nutrients or the recipient now has the private key of one of the keys in the ring they were now create the signature sighting and off basically saying send me the ether and that was deposited into this contract and that [Music] or alternatively the center we're doing an apology and then they would create the signature that notify does it mean that they think we're talking the contract so yeah so yeah so the first issue was possibly implemented yes my signature is super large so you can actually store it signature with more than five members on so you can't perform the verification that we needed to in one spot but enough ringing the set with different size that would be actually useful could if there is too small it's easy to sort of box race to see like second box is he going so a possible solution one us or somebody was just being a pre-contract on fair harvest and then eventually wasn't God and seems towards the bar which is cool but for talks about must be presented to take yes 256 miles and hopefully not so yeah so create new solutions need privacy you can create a signature on chains you have to solve it object and then do the verification so this is a variation on of the original signature so like what we features BCI's another image to it so by saying if you're trying to submit a signature to the contract again be noisome it what deposit and like no I can't do it so yes so some extensions in us that I was thinking of so I think was just generalized transaction privacy so right now we do it makes me think of like ether sort of probably but but a suitable the call T this is what's happening in the mixer is the ACP that you have like a transaction and then this tender she gets signed us Iranian marketed and your thing said actually could be called it so yeah [Music] because the contractor out needs a fix easier to audition because these people help people to set whatever I'll also contracted may be able to link the side of the recipient so I would be like pretty cool I think so I think I'm just really amazing people because American photographers since 2000 is a box of this is people to decide oh yeah yeah [Music] forgive me forgive me for how superficial is questioning but as an end user cares about privacy how would you compare and contrast ring signatures with something like a sea cave snarls because I know I see pig snorts I think like only 15% of exchange is actually influenced seek a snark so what is like the pros and cons to ring at and just it can fight as useful name so yeah [Music] which would be just an observation Bishop about the transaction it will become a cop theta and the who is going to pay me for the gods etc I definitely is just about the transactions you can have you know very like just to have a layer layer who will pay for that one just by very you can consider me [Music] like yeah