Protecting privacy by sanitizing personal data
Sébastien Canard, Roch Lescuyer · 2013
Anonymous credential systems allow users to obtain certified credentials from organizations and use them later without being traced. For instance, a student will be able to prove, using his student card certified by the University, that he is a student living e.g. in Hangzhou without revealing other information given by the student card, such as his name or studies. Besides, sanitizable signatures enable a designated person, called the sanitizer, to modify some parts of a signed message in a controlled way, such that the message can still be verified w.r.t. the original signer.