Non-Transferable Anonymous Tokens by Secret Binding

ePrint Report: Non-Transferable Anonymous Tokens by Secret Binding

F. Betül Durak, Laurane Marco, Abdullah Talayhan, Serge Vaudenay

Non-transferability (NT) is a security notion which ensures that credentials are only used by their intended owners. Despite its importance, it has not been formally treated in the context of anonymous tokens (AT) which are lightweight anonymous credentials. In this work, we consider a client who "buys" access tokens which are forbidden to be transferred although anonymously redeemed. We extensively study the trade-offs …

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