mirror of https://github.com/zcash/zips.git
Correct an off-by-one in an expression used in the definition of c for windowed Pedersen commitments
(this does not change the value of c). Signed-off-by: Daira Hopwood <daira@jacaranda.org>
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@ -6570,7 +6570,7 @@ Let $\FindGroupJHash$ be as defined in \crossref{concretegrouphashjubjub}.
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Let $\UncommittedSapling$ be as defined in \crossref{constants}.
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Let $c$ be the largest integer such that $4 \mult \hfrac{2^{4 \mult c}}{15} \leq \hfrac{\ParamJ{r}-1}{2}$,
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Let $c$ be the largest integer such that $4 \mult \hfrac{2^{4 \mult c}-1}{15} \leq \hfrac{\ParamJ{r}-1}{2}$,
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i.e.\ $c := 63$.
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\newsavebox{\gencountbox}
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@ -10830,6 +10830,16 @@ Peter Newell's illustration of the Jubjub bird, from \cite{Carroll1902}.
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\lsection{Change History}{changehistory}
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\historyentry{2020.1.14}{}
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\begin{itemize}
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\item No changes to \Sprout.
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\sapling{
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\item Correct an off-by-one in an expression used in the definition of $c$ in
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\crossref{concretepedersencommit} (this does not change the value of $c$).
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} %sapling
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\end{itemize}
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\historyentry{2020.1.13}{2020-08-11}
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\begin{itemize}
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\sapling{
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