Java SSL Untrusted Certificate

When you trying to connect to a server with untrusted SSL certificate, you might encounter below mentioned exceptions:

javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target

It was thrown because Java was unable to verify the validity of the certificate. In your web browser it might warn you that the certificate is untrusted and you’re still be able to add the certificate to a trusted list. But in Java, you’ll have to use a keytool to do the same thing.

You can find the keytool in your Java jdk bin directory. After you located your keytool, follow the steps:

• Download your server certificate to your local machine
• Insert to your Java cacerts by executing the keytool with some parameters:
  

  keytool -keystore ..\jre\lib\security\cacerts -import -alias anyaliasyoulike -file c:\path\to\your.crt -trustcacerts

• Keystore password: changeit

If you did it correctly, it should notify you with: Certificate was added to keystore.

Quick tip:

• To list all the certificate in keystore

  keytool -list -keystore ..\jre\lib\security\cacerts

• To remove certificate from keystore

  keytool -delete -alias certalias -keystore ..\jre\lib\security\cacerts