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Examples of internal CAs are Microsoft’s Active Directory Certificate Services (AD CS) which can be added as a role to a subset of your Windows servers. If it is going to be generally available for the whole Internet community, an external CA provider is a must. Which one to pick depends fundamentally on whether your SSL server will be accessible from outside. Mathematically speaking that trust is computed as digital signatures bound to the SSL certificates.ĬAs can be essentially either internal or external to your IT organization. If any of them does not known about it or does not trust, SSL will not work (well it will not make sense rather than it will not work) since basically they can’t thereby trust on what client or server are claiming to be. Let’s begin with a fundamental concept: what is the generation of SSL certificates all about?įirstly SSL is based on a hierarchical model of trust where Certificate Authorities, or shortly CAs, are the very fundamental entities on which both parties involved in a SSL communication must know and trust. This task is delegated to some other groups within your IT organization who based upon information sent over by SAP BASIS team members when requested they reply with an already signed certificate, in PKCS#7 format for instance, which must be uploaded into your SAP somehow. Nonetheless you would like to have some work done in advanced like for instance request and sign up the SSL certificates. You don’t have your SAP system installed yet, and hence no access to SAP tools whatsoever.For instance, Subject Alternative Names certificates. You want to make use of any X.509 extensions which SAP tools do not support.You can ask your Apache web server administrators if you don’t believe me. In fact this is the tool many web server administrators use to generate the SSL certificates. You are used to OpenSSL for this kind of tasks.You simply have a second alternative other than the one proposed by SAP.However I will try to give you next several reasons which for me justify this blog: And you probably right and do not need to lose your time reading through this blog. Furthermore, if you know how this process works using those SAP tools, or even though you are not, you should be wondering why I do need to bring OpenSSL into the scene to do something I already can do without it. I have to say that you can generate SSL certificates right away using tools delivered by SAP: transaction STRUST for ABAP, command line program sapgenpse or the Key Storage Service for Java. Thus, if you stick around, this is indeed what I am going to show you in this blog following as pragmatic way as possible. You probably did know already but for those of you who did not yet you can generate your Secure Socket Layer (SSL) certificates for SAP systems using the well-known OpenSSL suite.