I’d Rather Mix than Peel Onions: Anonymity for Payments in ... Blockchain Lab/DBL an update...
Transcript of I’d Rather Mix than Peel Onions: Anonymity for Payments in ... Blockchain Lab/DBL an update...
![Page 1: I’d Rather Mix than Peel Onions: Anonymity for Payments in ... Blockchain Lab/DBL an update 20190131/4...Stefanie Roos Mix Rather than Peel Onions 10 Problem Anonymity Protocol Attack](https://reader033.fdocuments.us/reader033/viewer/2022042300/5ecb8b65b4d6d443cf508624/html5/thumbnails/1.jpg)
I’d Rather Mix than Peel Onions: Anonymity for Paymentsin Decentralized Systems
Stefanie RoosDistributed Systems
![Page 2: I’d Rather Mix than Peel Onions: Anonymity for Payments in ... Blockchain Lab/DBL an update 20190131/4...Stefanie Roos Mix Rather than Peel Onions 10 Problem Anonymity Protocol Attack](https://reader033.fdocuments.us/reader033/viewer/2022042300/5ecb8b65b4d6d443cf508624/html5/thumbnails/2.jpg)
Mix Rather than Peel Onions 2Stefanie Roos
(Technical) Blockchain Issues
Scalability
Privacy
(Anonymity)
![Page 3: I’d Rather Mix than Peel Onions: Anonymity for Payments in ... Blockchain Lab/DBL an update 20190131/4...Stefanie Roos Mix Rather than Peel Onions 10 Problem Anonymity Protocol Attack](https://reader033.fdocuments.us/reader033/viewer/2022042300/5ecb8b65b4d6d443cf508624/html5/thumbnails/3.jpg)
Mix Rather than Peel Onions 3Stefanie Roos
(Technical) Blockchain Issues
Scalability
Privacy
(Anonymity)
Stanford MIT San Diego Berlin
![Page 4: I’d Rather Mix than Peel Onions: Anonymity for Payments in ... Blockchain Lab/DBL an update 20190131/4...Stefanie Roos Mix Rather than Peel Onions 10 Problem Anonymity Protocol Attack](https://reader033.fdocuments.us/reader033/viewer/2022042300/5ecb8b65b4d6d443cf508624/html5/thumbnails/4.jpg)
Mix Rather than Peel Onions 4Stefanie Roos
(Technical) Blockchain Issues
Scalability
Privacy
(Anonymity)
Stanford MIT San Diego Berlin
Transaction content
Metadata (IP address of origin)
![Page 5: I’d Rather Mix than Peel Onions: Anonymity for Payments in ... Blockchain Lab/DBL an update 20190131/4...Stefanie Roos Mix Rather than Peel Onions 10 Problem Anonymity Protocol Attack](https://reader033.fdocuments.us/reader033/viewer/2022042300/5ecb8b65b4d6d443cf508624/html5/thumbnails/5.jpg)
Mix Rather than Peel Onions 5Stefanie Roos
Network Layer Anonymity
![Page 6: I’d Rather Mix than Peel Onions: Anonymity for Payments in ... Blockchain Lab/DBL an update 20190131/4...Stefanie Roos Mix Rather than Peel Onions 10 Problem Anonymity Protocol Attack](https://reader033.fdocuments.us/reader033/viewer/2022042300/5ecb8b65b4d6d443cf508624/html5/thumbnails/6.jpg)
Mix Rather than Peel Onions 6Stefanie Roos
Network Layer Anonymity
Low latency(<= 2s)
![Page 7: I’d Rather Mix than Peel Onions: Anonymity for Payments in ... Blockchain Lab/DBL an update 20190131/4...Stefanie Roos Mix Rather than Peel Onions 10 Problem Anonymity Protocol Attack](https://reader033.fdocuments.us/reader033/viewer/2022042300/5ecb8b65b4d6d443cf508624/html5/thumbnails/7.jpg)
Mix Rather than Peel Onions 7Stefanie Roos
Problem
Anonymity Protocol Attack Effectiveness
None (Standard) Internal attacker 30%
Low Latency (Tor) Timing analysis 25%
![Page 8: I’d Rather Mix than Peel Onions: Anonymity for Payments in ... Blockchain Lab/DBL an update 20190131/4...Stefanie Roos Mix Rather than Peel Onions 10 Problem Anonymity Protocol Attack](https://reader033.fdocuments.us/reader033/viewer/2022042300/5ecb8b65b4d6d443cf508624/html5/thumbnails/8.jpg)
Mix Rather than Peel Onions 8Stefanie Roos
Mixing
![Page 9: I’d Rather Mix than Peel Onions: Anonymity for Payments in ... Blockchain Lab/DBL an update 20190131/4...Stefanie Roos Mix Rather than Peel Onions 10 Problem Anonymity Protocol Attack](https://reader033.fdocuments.us/reader033/viewer/2022042300/5ecb8b65b4d6d443cf508624/html5/thumbnails/9.jpg)
Mix Rather than Peel Onions 9Stefanie Roos
Mix Networks
![Page 10: I’d Rather Mix than Peel Onions: Anonymity for Payments in ... Blockchain Lab/DBL an update 20190131/4...Stefanie Roos Mix Rather than Peel Onions 10 Problem Anonymity Protocol Attack](https://reader033.fdocuments.us/reader033/viewer/2022042300/5ecb8b65b4d6d443cf508624/html5/thumbnails/10.jpg)
Mix Rather than Peel Onions 10Stefanie Roos
Problem
Anonymity Protocol Attack Effectiveness
None (Standard) Internal attacker 30%
Low Latency (Tor) Timing analysis 25%
Mixes Any attack as long as not all mixes are malicious
0%
![Page 11: I’d Rather Mix than Peel Onions: Anonymity for Payments in ... Blockchain Lab/DBL an update 20190131/4...Stefanie Roos Mix Rather than Peel Onions 10 Problem Anonymity Protocol Attack](https://reader033.fdocuments.us/reader033/viewer/2022042300/5ecb8b65b4d6d443cf508624/html5/thumbnails/11.jpg)
Mix Rather than Peel Onions 11Stefanie Roos
Research Challenges
![Page 12: I’d Rather Mix than Peel Onions: Anonymity for Payments in ... Blockchain Lab/DBL an update 20190131/4...Stefanie Roos Mix Rather than Peel Onions 10 Problem Anonymity Protocol Attack](https://reader033.fdocuments.us/reader033/viewer/2022042300/5ecb8b65b4d6d443cf508624/html5/thumbnails/12.jpg)
Mix Rather than Peel Onions 12Stefanie Roos
Research Challenges
![Page 13: I’d Rather Mix than Peel Onions: Anonymity for Payments in ... Blockchain Lab/DBL an update 20190131/4...Stefanie Roos Mix Rather than Peel Onions 10 Problem Anonymity Protocol Attack](https://reader033.fdocuments.us/reader033/viewer/2022042300/5ecb8b65b4d6d443cf508624/html5/thumbnails/13.jpg)
Mix Rather than Peel Onions 13Stefanie Roos
Research Challenges
![Page 14: I’d Rather Mix than Peel Onions: Anonymity for Payments in ... Blockchain Lab/DBL an update 20190131/4...Stefanie Roos Mix Rather than Peel Onions 10 Problem Anonymity Protocol Attack](https://reader033.fdocuments.us/reader033/viewer/2022042300/5ecb8b65b4d6d443cf508624/html5/thumbnails/14.jpg)
Mix Rather than Peel Onions 14Stefanie Roos
Research Challenges
![Page 15: I’d Rather Mix than Peel Onions: Anonymity for Payments in ... Blockchain Lab/DBL an update 20190131/4...Stefanie Roos Mix Rather than Peel Onions 10 Problem Anonymity Protocol Attack](https://reader033.fdocuments.us/reader033/viewer/2022042300/5ecb8b65b4d6d443cf508624/html5/thumbnails/15.jpg)
Mix Rather than Peel Onions 15Stefanie Roos
Research Challenges
![Page 16: I’d Rather Mix than Peel Onions: Anonymity for Payments in ... Blockchain Lab/DBL an update 20190131/4...Stefanie Roos Mix Rather than Peel Onions 10 Problem Anonymity Protocol Attack](https://reader033.fdocuments.us/reader033/viewer/2022042300/5ecb8b65b4d6d443cf508624/html5/thumbnails/16.jpg)
Mix Rather than Peel Onions 16Stefanie Roos
Research Challenges