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\begin{abstract}
David Chaum's original RSA blind sgnatures provide information theoretic
anonymity for customers' purchases. In practice, there are many schemes
that weaken this to provide properties. We describe a refresh protocol
for Taler that provides customers with post-quantum anonymity.
It replaces an elliptic curve Diffe-Hellman operation with a unique
hash-based encryption scheme for the proof-of-trust via key knoledge
property that Taler requires to distinguish untaxable operations from
taxable purchases.
that weaken this to provide properties, such as offline transactions or
taxability in Taler. We describe a refresh protocol for Taler that
provides customers with post-quantum anonymity. It replaces an elliptic
curve Diffe-Hellman operation with a hash-based encryption scheme for
the proof-of-trust via key knoledge property that Taler requires to
distinguish untaxable operations from taxable purchases.
\end{abstract}