Crypto-Book SOSP WIP

1. Crypto-Book: Privacy Preserving
Online Identities
John Maheswaran,
David Isaac Wolinsky, Bryan Ford
Yale University

2. The Problem

7. Our Solution

8. Personally identifiable
social networking ID
privacy-preserving crypto layer
Anonymized IDs – one pseudonym per site

9. privacy-preserving crypto layer

10. Not linkable by Facebook
or Crypto-Book
privacy-preserving crypto layer
Not linkable by Facebook
or Crypto-Book

11. Architecture Summary
• Assign public/private keypairs
to Facebook accounts
– Using split trust server cloud
• User generates anonymous
signature (linkable ring
signature)
– To anonymously authenticate
with third party sites
• ID is anonymous and
accountable

12. Thanks!
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More info:
www.crypto-book.com
Poster this afternoon
Workshop paper to appear in HotNets’13
– Available on our website