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</o:shapelayout></xml><![endif]--></head><body lang=FR link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Hi Karl,<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><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I believe it could be helpful to have a look at the 509_check_host() and do_x509_check() source code in crypto\x509v3\v3_utl.c.<br><br>Also, if you want to parse the SAN just for certificate validation, it is now easier to use :<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><a href="https://www.openssl.org/docs/manmaster/crypto/X509_VERIFY_PARAM_set_flags.html">https://www.openssl.org/docs/manmaster/crypto/X509_VERIFY_PARAM_set_flags.html</a><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><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Hope this helps,<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><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Regards,<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><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Michel.<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><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>De :</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> openssl-users [mailto:openssl-users-bounces@openssl.org] <b>De la part de</b> Karl Denninger<br><b>Envoyé :</b> lundi 11 janvier 2016 04:08<br><b>À :</b> openssl-users@openssl.org<br><b>Objet :</b> Re: [openssl-users] (Probably) Silly Application Programming Question<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal style='margin-bottom:12.0pt'>Yeah, now I just have to figure out how to parse the X509 Extension data from the certificate to pull out the SubjectAltName information.... :-)<br><br>There wouldn't be a snippet of code laying around somewhere that does that given a X509 cert as input would there? It looks a bit arcane....<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p></div></div></body></html>