constellation/image/sysroot-tree/usr/libexec/openssh/sshd-keygen
2025-07-01 12:47:04 +02:00

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Bash

#!/usr/bin/bash
# Taken from the original openssh-server package and slightly modified
set -x
# Create the host keys for the OpenSSH server.
KEYTYPE=$1
case $KEYTYPE in
"dsa") ;& # disabled in FIPS
"ed25519")
FIPS=/proc/sys/crypto/fips_enabled
if [[ -r $FIPS && $(cat $FIPS) == "1" ]]; then
exit 0
fi
;;
"rsa") ;; # always ok
"ecdsa") ;;
*) # wrong argument
exit 12 ;;
esac
mkdir -p /var/run/state/ssh
KEY=/var/run/state/ssh/ssh_host_${KEYTYPE}_key
KEYGEN=/usr/bin/ssh-keygen
if [[ ! -x $KEYGEN ]]; then
exit 13
fi
# remove old keys
rm -f "$KEY"{,.pub}
# create new keys
if ! $KEYGEN -q -t "$KEYTYPE" -f "$KEY" -C '' -N '' >&/dev/null; then
exit 1
fi
# sanitize permissions
/usr/bin/chmod 600 "$KEY"
/usr/bin/chmod 644 "$KEY".pub
if [[ -x /usr/sbin/restorecon ]]; then
/usr/sbin/restorecon "$KEY"{,.pub}
fi
exit 0