Not specific to PeerPub, but I helped work on a prototype of a federated login system based on OpenID that used blind signatures in a similar fashion: http://p

Not specific to PeerPub, but I helped work on a prototype of a federated login system based on OpenID that used blind signatures in a similar fashion: http://private-idp.appspot.com/ http://private-idp.appspot.com/ https://code.google.com/p/pseudoid/ https://code.google.com/p/pseudoid/ http://blind-signer.appspot.com/ http://blind-signer.appspot.com/ I haven't touched it for years and it looks like the login flow is broken now with the demo sites. Also, this uses unsafe server-side JS crypto for demo purposes only.