SSL-related passwords in solr.in.sh are in plain text

As per the steps mentioned at following URL, one needs to store the plain text password for the keystore to configure SSL for Solr, which is not a good idea from security perspective.
URL: https://cwiki.apache.org/confluence/display/solr/Enabling+SSL#EnablingSSL-SetcommonSSLrelatedsystemproperties (https://cwiki.apache.org/confluence/display/solr/Enabling+SSL#EnablingSSL-SetcommonSSLrelatedsystemproperties)
Is there any way so that the encrypted password can be stored (instead of plain password) in solr.in.cmd/solr.in.sh to configure SSL?