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Remove anchorSapling field when there are no Spends. 

This corresponds to e0b08fd576 in ZIP 225.

Signed-off-by: Daira Hopwood <daira@jacaranda.org>
This commit is contained in:
Daira Hopwood 2021-04-01 01:49:22 +01:00
parent 49f3b206f5
commit 1eec1f9832
1 changed files with 8 additions and 6 deletions
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14
protocol/protocol.tex
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@ -12154,7 +12154,7 @@ $\bindingSig{} \rightarrow \bindingSig{Sapling}$.
\introlist
The \Zcash{} \defining{\transaction} format for \transactionVersion 5 is as follows
(this should be read in the context of consensus rules later in the section):
\vspace{-1.8ex}
\vspace{-1ex}
\begin{center}
\scalebox{0.77}{
\renewcommand{\arraystretch}{1.28}
@ -12257,10 +12257,12 @@ An \orchardBindingSignature on the \sighashTxHash, validated per \crossref{concr
\vspace{-0.3ex}
\scalebox{0.87}{
\begin{tabularx}{1.14\textwidth}{@{\!\!}l@{\hskip 1em}X@{}}
$\ddagger$ & \valueBalance{Sapling}, \anchorField{Sapling}, and \bindingSig{Sapling}
$\ddagger$ & The fields \valueBalance{Sapling} and \bindingSig{Sapling}
are present if and only if $\nSpendsSapling + \nOutputsSapling > 0$. If \valueBalance{Sapling}
is not present, then $\vBalance{Sapling}$ is defined to be $0$. \\[-0.5ex]
& The field \anchorField{Sapling} is present if and only if $\nSpendsSapling > 0$. \\
$\mathsection$ & The fields \flagsOrchard, \valueBalance{Orchard}, \anchorField{Orchard},
\sizeProofsOrchard, \proofsOrchard, and \bindingSig{Orchard} are present if and only if
$\nActionsOrchard > 0$. If \valueBalance{Orchard} is not present, then $\vBalance{Orchard}$
@ -12268,12 +12270,10 @@ is defined to be $0$.
\end{tabularx}
} %scalebox
\end{center}
\vspace{-2ex}
\vspace{-1.6ex}
\scalebox{0.87}{
\raggedright\!\!\Transactionversion 5 does not support \joinSplitTransfers.
Several fields are reordered and/or renamed relative to prior versions.
} %scalebox
} %nufive
Several fields are reordered and/or renamed relative to prior versions.}} %scalebox %nufive
\begin{consensusrules}
\item The \defining{\transactionVersionNumber} \MUST be greater than or equal to $1$.
@ -14215,6 +14215,8 @@ Peter Newell's illustration of the Jubjub bird, from \cite{Carroll1902}.
reference \cite{Zcash-Orchard} and \cite{Zcash-halo2} there.
\item Section \crossref{concreteorchardkdf} should be in \nufivecolorname.
\item Explicitly note that the end of the \cite{ZIP-212} grace period precedes \NUFive activation.
\item Change the condition for presence of $\anchorField{Sapling}$ in a version 5 \transaction
to $\vSpendsSapling > 0$.
} %nufive
\sapling{
\item Fix type error in $\kdfinput$ for $\KDF{Sapling}$\nufive{ and $\KDF{Orchard}$}