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In \crossref{sighash}, add a consensus rule that SIGHASH type encodings MUST be canonical 

for v5 transactions.

Signed-off-by: Daira Hopwood <daira@jacaranda.org>
This commit is contained in:
Daira Hopwood 2022-01-19 18:01:34 +00:00
parent 24cfab0b55
commit dcc5532d61
1 changed files with 13 additions and 0 deletions
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13
protocol/protocol.tex
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@ -6053,6 +6053,15 @@ to use the \sighashAlgorithm defined in \cite{ZIP-243}. After \NUFive activation
\transaction versions use the \NUFive \consensusBranchID \hexint{F919A198} as defined in \transaction versions use the \NUFive \consensusBranchID \hexint{F919A198} as defined in
\cite{ZIP-252}.} \cite{ZIP-252}.}
\nufive{
\consensusrule{
\nufiveonward{Any \sighashType encoding used in a version 5 \transaction \MUST be the
canonical encoding of one of the defined \sighashTypes, i.e.\ one of \hexint{01},
\hexint{02}, \hexint{03}, \hexint{81}, \hexint{82}, or \hexint{83}. (Previously,
undefined bits of a \sighashType encoding were ignored.)}
} %consensusrule
} %nufive
\lsubsection{Non-malleability (\SproutText)}{sproutnonmalleability} \lsubsection{Non-malleability (\SproutText)}{sproutnonmalleability}
@ -14545,6 +14554,10 @@ Peter Newell's illustration of the Jubjub bird, from \cite{Carroll1902}.
\historyentry{2022.2.19}{} \historyentry{2022.2.19}{}
\begin{itemize} \begin{itemize}
\nufive{
\item In \crossref{sighash}, add a consensus rule that \sighashType encodings \MUST
be canonical for v5 \transactions.
} %nufive
\item In \crossref{joinsplit}, clarify that balance for \joinSplitTransfers is enforced \item In \crossref{joinsplit}, clarify that balance for \joinSplitTransfers is enforced
by the \joinSplitStatement, and that there is no consensus rule to check it directly. by the \joinSplitStatement, and that there is no consensus rule to check it directly.
\item In \crossref{internalh}, add a security argument for why the \shaHash-based \item In \crossref{internalh}, add a security argument for why the \shaHash-based