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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>Please see responses below, posted on behalf of TSYS.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Calibri",sans-serif'>From:</span></b><span style='font-size:11.0pt;font-family:"Calibri",sans-serif'> public-bounces@cabforum.org <b>On Behalf Of </b>Andrew R. Whalley<br><br><o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><div><div><div><div><p class=MsoNormal> <o:p></o:p></p></div><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in'><p class=MsoNormal>The response I received from TSYS regarding the OU value is as follows:<br><br>"The value at the end of the OU, is an independent cryptographically created<br>identity value used by TSYS Support for the sole purpose of identifying the<br>site where the services terminate."<o:p></o:p></p></blockquote><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>It would be useful to get more information on this point. For example:<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>* Is this required for correct operation of the systems using the certificates?<span style='color:#1F497D'><o:p></o:p></span></p><pre><b><i><span style='font-family:"Segoe UI",sans-serif;color:black'>It is not critical for SSL/TLS operations, however is used to distinguish different certificates on different ports at the same site for the same domain. It provides the Support Teams (non-technical teams) with a guaranteed unique value to confirm the client is attempting to access the correct service.<o:p></o:p></span></i></b></pre><p class=MsoNormal><br>* Is the cryptographic operation something simple we could verify such as the hash of the site name that could be provided?<o:p></o:p></p><pre><b><i><span style='font-family:"Segoe UI",sans-serif;color:black'>The value is not a hash, it is a site identifying value that is randomly generated using Agile Bits 1Password 6.4.3 Password Algorithms. It is indented to remain sticky to the site/host going forward and will be used on all subsequent certificate replacements of the same Certificate Type.</span></i></b><o:p></o:p></pre><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'><o:p> </o:p></span></p></div><div><p class=MsoNormal>* Are any earlier existing certs that have the same style of OU value available for inspection?<o:p></o:p></p></div><div><p class=MsoNormal><b><i><span style='font-size:10.0pt;font-family:"Segoe UI",sans-serif;color:black'>In the payment space, no, the additional element was added due to the challenges teams had confirming a host and by certificate name when multiple Virtual IPs/Ports exist for the same domain name.<o:p></o:p></span></i></b></p></div></div></div></div></div></body></html>