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fix typos

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Florian Dold 2017-05-19 14:25:45 +02:00
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doc/paper/taler.tex
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@ -1354,17 +1354,17 @@ other users.
We will now consider the impact of the refresh operation. We will now consider the impact of the refresh operation.
For the sake of the argument, we will first consider an earlier For the sake of the argument, we will first consider an earlier
encryption-based version of the protocol in which a refresh operated encryption-based version of the protocol in which a refresh operation
consisted of $\kappa$ normal coin withdrawals and the commitment consisted of $\kappa$ normal coin withdrawals and the commitment
consisted of the blinding factors and private keys of the fresh coins consisted of the blinding factors and private keys of the fresh coins
encrypted using the secret $t^{(i)} C_s$ where $C_s = c_s G$ of the encrypted using the secret $t^{(i)} C_s$ where $C_s = c_s G$ of the
dirty coin $C$ being refreshed and $T^{(i)} = t^{(i)} G$ is the dirty coin $C$ being refreshed and $T^{(i)} = t^{(i)} G$ is the
transfer key. transfer key.
% %
In Taler, we replaced this encryption-based schem with the current In Taler, we replaced this encryption-based scheme with the current KDF-based
KDF-based scheme as it required slightly more storage space, the scheme, as the earlier scheme required slightly more storage space, an
additional, encryption primitive, and exposed more random number additional encryption primitive, and exposed more random number generator
generator output from the wallet. output from the wallet.
\begin{proposition} \begin{proposition}
Assuming the encryption used is semantically (IND-CPA) secure, and Assuming the encryption used is semantically (IND-CPA) secure, and