SAML Signing Certificate - Which SSL Certificate Type? : <p>We're currently developing an SSL solution using SAML 2.0, and until now, have been using self signed certificates for signing the XML requests.</p>

<p>However, as we move to production, we want to use a certificate from a certificate authority. But I'm not really sure what type of certificate to purchase as they are all website centric. For example, single domain, wildcard domain, etc.</p>

<p>For example, have been looking at these:
<a href="https://www.123-reg.co.uk/ssl-certificates/" rel="noreferrer">https://www.123-reg.co.uk/ssl-certificates/</a></p>

<p>I'm fairly knowledgeable when it comes to purchasing SSL certificates for a website. However, as the certificate is just going to be use for signing SAML requests, does it matter which type is purchased? Surely whether it supports a single domain or wildcard domain is irrelevant?</p>
