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gluon-firmware/contrib/sign.sh

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#!/bin/sh
if [ $# -eq 0 -o "-h" = "$1" -o "-help" = "$1" -o "--help" = "$1" ]; then
cat <<EOHELP
Usage: $0 <secret> <manifest>
EOHELP
exit 1
fi
SECRET=$1
manifest=$2
upper=$(mktemp)
lower=$(mktemp)
awk "BEGIN { sep=0 }
/^---\$/ { sep=1; next }
{ if(sep==0) print > \"$upper\";
else print > \"$lower\"}" \
$manifest
ecdsasign $upper < $SECRET >> $lower
cat $upper > $manifest
echo --- >> $manifest
cat $lower >> $manifest
rm -f $upper $lower