You need to download the Java Cryptography Strength. When you installed it and start it you wil get the following message. You can download it right here Keystore explorer. A simple GUI based tool is Keystore Explorer. To add the files to the keystore you need either the Command prompt or you need a GUI based tool. I will show you the GUI way, it’s the easiest way and you keep an overview. These four files (it might be different with other providers) need to be added to the KeyStore. This and the certifcate you requested of course. In return they will provide you with a certificate and some certificates.Īs you see with Comodo you get a ROOT certificate, a INTERMEDIATE certificate and a DOMAIN validation certificate. Next you request the certificate from you provider with the CSR file. And when you are done, the files are created, the JKS file is the keystore, the CSR is your certificate request. You need to enter it a few times so make sure you remember it. When running this script you need to enter a password for the keystore, doesn’t have to be difficult but something you can enter more often. Keytool -genkey -alias server -keyalg RSA -keysize 2048 -keystore my_url_com.jks -dname “ CN=my.url.com, OU=ICT, O=Your company, L=Location, ST=NBR, C=NL” & keytool -certreq -alias server -file my_url_com.csr -keystore my_url_com.jks. I coloured the settings you need to change i copied the script here so you can also just copy it here and change with your settings. Copy the contents of this box and run in on the Tomcat server to create the Certificate request. To start you need to create a SSL Certificate, the easiest way to do this is by going to the following website Create SSL CSR and fill in the details.Īfter you will in the details you click on “Generate” and the script is copied to the box on the right side. Add certificate + root / intermediate to KeyStore.Today I thought about documenting it as every time I’m thinking where to start. So today I, again, had to do the same trick. A SSL certificate on a Tomcat server is not as easy as on an Microsoft Internet Information Server. Of course we needed get a certificate on that server so that we can provide our customers with a secure environment. We have a couple of SAAS services where we run Tomcat service to offer the web services. Security is key in todays world, so also your Tomcat server. this is manual work and it's not clear what values need to match in order to guarantee that communication will actually work between ( server having keystore.jks) and ( client having truststore.Securing your Tomcat server with a SSL Certificate.use Keystore explorer or keytool -v -list.jks files you need to use keytool to convert them to. pros: likely more reliable, better debug output.use openssl to start it with s_server and start it with s_client.So, that you can rule-out them as problematic and focus on another things that might cause your system not working. How to ensure that among all configuration you need to do, that keystore.jks and trustore.jks that you've generated will work properly for some of your hostname? Openssl s_client -connect my-host:my-portīut in order to use it you first need to spin up web server with your keystore. I've tried to search is there any existing tool or if keytool can be use directly to give it keystore, truststore and hostname and that result would be YES/NO if your those files are "compatible". Because you need to use various things: openssl, keytool, Kafka (or whatever else) The thing is that it can be overwhelming to learn bunch of stuff all at once. And not just blindly follow some tutorial steps. Good thing is to read as much documentation before to try to understand what you are doing. You don't know did you made mistake while generating root certificate or when creating keystore and truststore, or maybe something is wrong with your configuration. But it can be hard to troubleshoot when it doesn't work. Usually, I would follow some tutorial steps just to get working example locally. My concrete example was that I was trying to setup secure communication for Kafka cluster, so that brokers communicate over SSL and that clients also use SSL when communicating with kafka brokers. In order to setup it, various steps are required. Nowdays, it's common to setup SSL for communication between different internal micro-services.
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