Design paper: <a href="https:&#x2F;&#x2F;svn.torproject.org&#x2F;svn&#x2F;projects&#x2F;design-paper&#x2F;tor-design.pdf" rel="nofollow">https:&#x2F;&#x2F;svn.torproject.org&#x2F;svn&#x2F;projects&#x2F;design-paper&#x2F;tor-des...</a>