The application server does not start after changes to the SSL keystore password

You change the password to the SSL keystore on WebSphere Application Server Liberty Base, or you change the security settings using WebSphere Application Server Liberty Base the ssl_config.xml or authentication_config.xml configuration files. The application server does not start. The following message is found in the application server trace file trace.log (the message is shown here on three lines to make it more readable): 
JSAS0011E: [SSLConfiguration.validateSSLConfig] Java. exception 
Exception = java.io.IOException: 
Keystore was tampered with, or password was incorrect

Cause and solution:

The certificate has not been reloaded or regenerated. Any change to the keystore password on the server or connector requires the SSL certificate to be reloaded or regenerated to work correctly.

Reload or regenerate the certificate and restart the application server.

To regenerate the certificate issue this command: 
openssl genrsa -des3 -passout pass:<your_password> -out client.key 2048
If you do not want to supply the password openly in the command, omit it, and you will be prompted for it.