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</o:shapelayout></xml><![endif]--></head><body lang=DE-AT link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='mso-fareast-language:EN-US'>Wow that was fast<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'>Keep up that awsome work!<o:p></o:p></span></p><p class=MsoNormal><a name="_MailEndCompose"><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></a></p><p class=MsoNormal><span style='mso-bookmark:_MailEndCompose'><span style='mso-fareast-language:EN-US'>Thank you.<o:p></o:p></span></span></p><p class=MsoNormal><span style='mso-bookmark:_MailEndCompose'><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></span></p><p class=MsoNormal><span style='mso-bookmark:_MailEndCompose'><span style='font-size:9.0pt;font-family:"Verdana",sans-serif'>Kind Regards,<o:p></o:p></span></span></p><p class=MsoNormal><span style='mso-bookmark:_MailEndCompose'><span style='font-size:9.0pt;font-family:"Verdana",sans-serif'>Georg<o:p></o:p></span></span></p><p class=MsoNormal><span style='mso-bookmark:_MailEndCompose'><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></span></p><p class=MsoNormal><span style='mso-bookmark:_MailEndCompose'><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></span></p><span style='mso-bookmark:_MailEndCompose'></span><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span lang=DE>Von:</span></b><span lang=DE> openssl-users [mailto:openssl-users-bounces@openssl.org] <b>Im Auftrag von </b>Paul Yang<br><b>Gesendet:</b> Freitag, 28. Juli 2017 18:34<br><b>An:</b> Openssl Users <openssl-users@openssl.org><br><b>Betreff:</b> Re: [openssl-users] openssl rsa -check<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>Please refer to this: <a href="https://github.com/openssl/openssl/pull/4043">https://github.com/openssl/openssl/pull/4043</a><o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p><div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><div><p class=MsoNormal>On 29 Jul 2017, at 00:21, Paul Yang <<a href="mailto:paulyang.inf@gmail.com">paulyang.inf@gmail.com</a>> wrote:<o:p></o:p></p></div><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal>Hmmm, it’s a bug introduced by the use of RSA_check_key_ex function. Thanks for reporting.<o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p><div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><div><p class=MsoNormal>On 28 Jul 2017, at 19:16, Georg Höllrigl <<a href="mailto:georg.hoellrigl@gmx.at">georg.hoellrigl@gmx.at</a>> wrote:<o:p></o:p></p></div><p class=MsoNormal><o:p> </o:p></p><div><div><div><div><div><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana",sans-serif'>Hello,<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana",sans-serif'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana",sans-serif'>I think there is something broken with verifying the Private Key with "openssl rsa -check" like it was described in <a href="https://blog.hboeck.de/archives/888-How-I-tricked-Symantec-with-a-Fake-Private-Key.html" target="_blank">https://blog.hboeck.de/archives/888-How-I-tricked-Symantec-with-a-Fake-Private-Key.html</a><o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana",sans-serif'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana",sans-serif'>I tried to implement better checking in a script that tells me if a key matches a certificate or certificate request.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana",sans-serif'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana",sans-serif'>To reproduce, get the fake private key from <a href="https://github.com/hannob/tlshelpers/blob/master/examples/symantec.key" target="_blank">https://github.com/hannob/tlshelpers/blob/master/examples/symantec.key</a><o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana",sans-serif'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana",sans-serif'>Verify the key with openssl 1.0.1e-fips or 1.0.2h:<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana",sans-serif'>$OPENSSL rsa -in symantec-broken.key -check -noout<br>RSA key error: n does not equal p q<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana",sans-serif'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana",sans-serif'>Verify the key with openssl 1.1.0c or 1.1.0f (gives no output)<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana",sans-serif'>$OPENSSL rsa -in symantec-broken.key -check -noout<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana",sans-serif'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana",sans-serif'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana",sans-serif'>I would expect 1.1.0 to report the faked key in some way.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana",sans-serif'>Even the returnvalue for openssl returns with a 0 no matter if used a legimate key or a faked key.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana",sans-serif'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana",sans-serif'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana",sans-serif'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana",sans-serif'>Kind Regards,<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana",sans-serif'>Georg<o:p></o:p></span></p></div></div></div></div><p class=MsoNormal>-- <br>openssl-users mailing list<br>To unsubscribe: <a href="https://mta.openssl.org/mailman/listinfo/openssl-users">https://mta.openssl.org/mailman/listinfo/openssl-users</a><o:p></o:p></p></div></blockquote></div><p class=MsoNormal><o:p> </o:p></p></div></div></div></blockquote></div><p class=MsoNormal><o:p> </o:p></p></div></div></div></body></html>