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