![]() You can download the certificate analyzer from the zowe artifactory using the following command: curl -output certificate-analyser.jar To get you started, you can use the certificate analyzer, a command line tool that can help you with debugging. ![]() First, let’s take a look at a few tools which can help you. To help out with troubleshooting issues related to your setup, let’s take a look at the most common problems and how to fix them. An example of a faulty setup might be that the hostname of the service does not match any subject alternative name. The validity of the certificate, however, can be affected if the setup is faulty. This is a valid option for installation and it is possible to provide these certificates as input when installing a script. Users may already have certificates provided to them by a Certificate Authority (CA), such as DigiCert. In reality, however, not every user has the same requirements, and each environment is different. By following the steps provided with the enabler, you’ll have the complete setup “out of the box” that is ready for use. You can easily generate all of the necessary certificates and private keys using a script or JCL that is part of Zowe’s distribution. Currently, supported formats are PKCS12 and SAF key ring. To create a TLS setup, certificates and private keys should be provided in one of the supported formats. So what’s the best way to use this security feature also in your application? If you use the Zowe onboarding enabler, it’s just a matter of applying the correct configuration. The owner of the key pair provides only the public key and keeps the private key in a secure storage location such as PKSC12. This system is called asymmetric cryptography. Any data that is encrypted with a public key can only be decrypted with a compatible private key and vice versa. It also identifies the entity on the other side.Īdditionally, the public key from the certificate has its own corresponding private key. The certificate contains a public key, and also serves as proof of ownership of this public key. In short, a digital certificate or public key certificate is an electronic document. To keep it simple, it’s enough for now just to understand that part of this TLS handshake involves the server and client exchanging their digital certificates. There are many things that go on in a TLS handshake, so if you’d like to learn more about this, here’s a quick overview. To establish a secure connection, the client and server take part in a procedure referred to as a “TLS handshake”. For the purpose of this article, we’ll focus on how TLS is used with HTTP. Just as TCP or HTTP is built on a protocol, TLS is also built on another unique protocol. TLS provides privacy and encryption for client-server communication and guarantees that your message is readable only by you and the intended recipient. Transport Layer Security or TLS, the successor of the older Secure Sockets Layer (SSL), was designed to address such security issues. The immediate questions this design presents are: how can the client be sure that this connection is secure? And, how do we know that the server requesting the data is really what it claims to be? While, in its basic form, this very flexible protocol is everywhere, it is widely-known that it also presents some fundamental security risks.īy design, initiation of the connection is performed on the client side. One of the most common ways to communicate over the internet is via HTTP, a client-server protocol that allows resources to be fetched from a server. To better understand issues that can cause your TLS setup to go haywire, let’s start off with an explanation of why TLS is necessary and the role digital certificates play. To better debug most common issues, the Zowe API squad have developed a CLI tool called Zowe Certificate Analyzer, which we will use in this article. In this post, we aim to enhance your understanding of approaches you can use to help you with debugging and fixing the most common problems that could emerge from such a setup. TLS is a very effective way to secure internet connections and safeguard the transfer of sensitive data between systems, but getting this highly-evolving technology to work with your applications is not free of it’s own pain points. Whether you are a system administrator installing The Open Mainframe’s Project’s Zowe, or a software developer trying to register your application with API Mediation Layer, it is certain that you have already come across some form of the SSL/TLS setup.
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