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#! /bin/sh
rm *.key *.pub
# avoid having too many files
ecbits="ecbits.txt"
echo 521 > "$ecbits"
getecbits() {
last=$(cat $ecbits)
case "$last" in
256) last=384;;
384) last=521;;
521) last=256;;
esac
echo $last > "$ecbits"
echo $last
}
genkey() {
fn="$1"
args="-f $fn -C $fn"
case "$fn" in
ecdsa-*) args="$args -t ecdsa -b $(getecbits)" ;;
rsa-*) args="$args -t rsa" ;;
dsa-*) args="$args -t dsa" ;;
ed25519-*) args="$args -t ed25519" ;;
esac
password=''
case "$fn" in
*-psw.*) password="password" ;;
esac
ssh-keygen -q -o $args -N "$password"
}
# generate private key files
for ktype in rsa dsa ecdsa ed25519; do
for psw in nopsw psw; do
genkey "${ktype}-${psw}.key"
done
done
# generate public key files
for fn in *.key; do
ssh-keygen -q -y -f "$fn" > /dev/null
done
rm -f "$ecbits"
# generate public key files with certificate
ssh-keygen -q -s "dsa-nopsw.key" -I "name" \
-z 1 -V 20100101123000:21090101123000 \
"dsa-nopsw.key.pub"
ssh-keygen -q -s "rsa-nopsw.key" -I "name" \
-z 2 -n user1,user2 -t rsa-sha2-512 \
"rsa-nopsw.key.pub"
ssh-keygen -q -s "ecdsa-nopsw.key" -I "name" \
-h -n domain1,domain2 \
"ecdsa-nopsw.key.pub"
ssh-keygen -q -s "ed25519-nopsw.key" -I "name" \
-O no-port-forwarding \
"ed25519-nopsw.key.pub"
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