forked from rpms/openssh
155 lines
3.5 KiB
Bash
155 lines
3.5 KiB
Bash
#!/bin/bash
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# Create the host keys for the OpenSSH server.
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#
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# The creation is controlled by the $AUTOCREATE_SERVER_KEYS environment
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# variable.
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AUTOCREATE_SERVER_KEYS="RSA ECDSA ED25519"
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# source function library
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. /etc/rc.d/init.d/functions
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# Some functions to make the below more readable
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KEYGEN=/usr/bin/ssh-keygen
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RSA1_KEY=/etc/ssh/ssh_host_key
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RSA_KEY=/etc/ssh/ssh_host_rsa_key
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DSA_KEY=/etc/ssh/ssh_host_dsa_key
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ECDSA_KEY=/etc/ssh/ssh_host_ecdsa_key
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ED25519_KEY=/etc/ssh/ssh_host_ed25519_key
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# pull in sysconfig settings
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[ -f /etc/sysconfig/sshd ] && . /etc/sysconfig/sshd
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fips_enabled() {
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if [ -r /proc/sys/crypto/fips_enabled ]; then
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cat /proc/sys/crypto/fips_enabled
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else
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echo 0
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fi
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}
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do_rsa1_keygen() {
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if [ ! -s $RSA1_KEY -a `fips_enabled` -eq 0 ]; then
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echo -n $"Generating SSH1 RSA host key: "
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rm -f $RSA1_KEY
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if test ! -f $RSA1_KEY && $KEYGEN -q -t rsa1 -f $RSA1_KEY -C '' -N '' >&/dev/null; then
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chgrp ssh_keys $RSA1_KEY
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chmod 640 $RSA1_KEY
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chmod 644 $RSA1_KEY.pub
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if [ -x /sbin/restorecon ]; then
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/sbin/restorecon $RSA1_KEY{,.pub}
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fi
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success $"RSA1 key generation"
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echo
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else
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failure $"RSA1 key generation"
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echo
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exit 1
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fi
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fi
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}
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do_rsa_keygen() {
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if [ ! -s $RSA_KEY ]; then
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echo -n $"Generating SSH2 RSA host key: "
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rm -f $RSA_KEY
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if test ! -f $RSA_KEY && $KEYGEN -q -t rsa -f $RSA_KEY -C '' -N '' >&/dev/null; then
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chgrp ssh_keys $RSA_KEY
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chmod 640 $RSA_KEY
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chmod 644 $RSA_KEY.pub
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if [ -x /sbin/restorecon ]; then
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/sbin/restorecon $RSA_KEY{,.pub}
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fi
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success $"RSA key generation"
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echo
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else
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failure $"RSA key generation"
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echo
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exit 1
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fi
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fi
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}
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do_dsa_keygen() {
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if [ ! -s $DSA_KEY -a `fips_enabled` -eq 0 ]; then
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echo -n $"Generating SSH2 DSA host key: "
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rm -f $DSA_KEY
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if test ! -f $DSA_KEY && $KEYGEN -q -t dsa -f $DSA_KEY -C '' -N '' >&/dev/null; then
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chgrp ssh_keys $DSA_KEY
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chmod 640 $DSA_KEY
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chmod 644 $DSA_KEY.pub
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if [ -x /sbin/restorecon ]; then
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/sbin/restorecon $DSA_KEY{,.pub}
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fi
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success $"DSA key generation"
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echo
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else
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failure $"DSA key generation"
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echo
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exit 1
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fi
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fi
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}
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do_ecdsa_keygen() {
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if [ ! -s $ECDSA_KEY ]; then
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echo -n $"Generating SSH2 ECDSA host key: "
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rm -f $ECDSA_KEY
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if test ! -f $ECDSA_KEY && $KEYGEN -q -t ecdsa -f $ECDSA_KEY -C '' -N '' >&/dev/null; then
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chgrp ssh_keys $ECDSA_KEY
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chmod 640 $ECDSA_KEY
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chmod 644 $ECDSA_KEY.pub
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if [ -x /sbin/restorecon ]; then
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/sbin/restorecon $ECDSA_KEY{,.pub}
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fi
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success $"ECDSA key generation"
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echo
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else
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failure $"ECDSA key generation"
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echo
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exit 1
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fi
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fi
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}
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do_ed25519_keygen() {
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if [ ! -s $ED25519_KEY -a `fips_enabled` -eq 0 ]; then
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echo -n $"Generating SSH2 ED25519 host key: "
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rm -f $ED25519_KEY
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if test ! -f $ED25519_KEY && $KEYGEN -q -t ed25519 -f $ED25519_KEY -C '' -N '' >&/dev/null; then
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chgrp ssh_keys $ED25519_KEY
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chmod 640 $ED25519_KEY
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chmod 644 $ED25519_KEY.pub
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if [ -x /sbin/restorecon ]; then
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/sbin/restorecon $ED25519_KEY{,.pub}
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fi
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success $"ED25519 key generation"
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echo
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else
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failure $"ED25519 key generation"
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echo
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exit 1
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fi
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fi
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}
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if [ "x${AUTOCREATE_SERVER_KEYS}" == "xNO" ]; then
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exit 0
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fi
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# legacy options
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case $AUTOCREATE_SERVER_KEYS in
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NODSA) AUTOCREATE_SERVER_KEYS="RSA ECDSA ED25519";;
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RSAONLY) AUTOCREATE_SERVER_KEYS="RSA";;
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YES) AUTOCREATE_SERVER_KEYS="DSA RSA ECDSA ED25519";;
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esac
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for KEY in $AUTOCREATE_SERVER_KEYS; do
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case $KEY in
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DSA) do_dsa_keygen;;
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RSA) do_rsa_keygen;;
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ECDSA) do_ecdsa_keygen;;
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ED25519) do_ed25519_keygen;;
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esac
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done
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