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-rw-r--r--doc/paper/taler.tex10
1 files changed, 5 insertions, 5 deletions
diff --git a/doc/paper/taler.tex b/doc/paper/taler.tex
index 8698719cb..6c8092719 100644
--- a/doc/paper/taler.tex
+++ b/doc/paper/taler.tex
@@ -1354,17 +1354,17 @@ other users.
We will now consider the impact of the refresh operation.
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 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
dirty coin $C$ being refreshed and $T^{(i)} = t^{(i)} G$ is the
transfer key.
%
-In Taler, we replaced this encryption-based schem with the current
-KDF-based scheme as it required slightly more storage space, the
-additional, encryption primitive, and exposed more random number
-generator output from the wallet.
+In Taler, we replaced this encryption-based scheme with the current KDF-based
+scheme, as the earlier scheme required slightly more storage space, an
+additional encryption primitive, and exposed more random number generator
+output from the wallet.
\begin{proposition}
Assuming the encryption used is semantically (IND-CPA) secure, and