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Remove specification of memo contents, which will be in ZIP 302. 

Signed-off-by: Daira Hopwood <daira@jacaranda.org>
This commit is contained in:
Daira Hopwood 2021-03-22 15:59:10 +00:00
parent 75a8a944d4
commit e1bdfce3bc
1 changed files with 3 additions and 17 deletions
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20
protocol/protocol.tex
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@ -10595,23 +10595,8 @@ Each \Sapling \notePlaintext (denoted $\NotePlaintext{}$) consists of:
$\Memo$ is a $\MemoByteLength$-byte \memo associated with this \note.
\introlist
The usage of the \memo is by agreement between the sender and recipient of the
\note. The \memo \SHOULD be encoded as one of:
\begin{itemize}
\item a UTF-8 human-readable string \cite{Unicode}, padded by appending zero bytes; or
\item the byte $\hexint{F6}$ followed by $511$ $\hexint{00}$ bytes, indicating ``no memo''; or
\item any other sequence of $\MemoByteLength$ bytes starting with a byte value $\hexint{F5}$
or greater (which is therefore not a valid UTF-8 string), as specified in \cite{ZIP-302}.
\end{itemize}
When the first byte value is less than $\hexint{F5}$, wallet software is expected to strip any
trailing zero bytes and then display the resulting \mbox{UTF-8} string to the recipient user,
where applicable. Incorrect UTF-8-encoded byte sequences \SHOULD be displayed as replacement
characters (\ReplacementCharacter).
In other cases, the contents of the \memo \SHOULDNOT be displayed unless otherwise specified
by \cite{ZIP-302}.
The usage of the \memo is by agreement between the sender and recipient of the \note.
Non-consensus constraints on the \memo contents are specified in \cite{ZIP-302}.
Other fields are as defined in \crossref{notes}.
@ -13569,6 +13554,7 @@ Peter Newell's illustration of the Jubjub bird, from \cite{Carroll1902}.
\begin{itemize}
\item Correct the description of $\lengthField$ in \crossref{unifiedpaymentaddrencoding}.
\item Correct the type signature of $\DiversifyHash{Orchard}$ in \crossref{abstracthashes}.
\item Remove specification of \memo contents, which will be in \cite{ZIP-302}.
\item Remove support for building the \Sprout-only specification (\texttt{sprout.pdf}).
\item Remove magenta highlighting of differences from \Zerocash.
\end{itemize}