Just paste the CSR into the online form and hit 'Decode'. Need to see what information is in a CSR? You could do it with OpenSSL but it is far easier to just use Comodo's CSR Decoder tool. Make sure to view our list of Most Common OpenSSL commands. However, it also has hundreds of different functions that allow you to view the details of a CSR or certificate, compare an MD5 hash of the certificate and private key (to make sure they match), verify that a certificate is installed properly on any website, and convert the certificate to a different format. OpenSSL is commonly used to create the CSR and private key for many different platforms, including Apache. There are versions for nearly every platform, including Windows, Linux, and Mac OS X. OpenSSLīy far the most versatile (and complex) SSL tool, OpenSSL is an open source implementation of the SSL protocol. Note: Since writing this article we have created our own selection of SSL Certificate Tools. Don't worry though! There are several SSL tools that are available that can help you determine the problem and get your servers running SSL properly. At times, it can take a lot of time and effort to figure out what a specific problem is. While you always hope that things will go smoothly when you do your SSL install, life likes to make things difficult sometimes.