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<title>Yubico Forum</title>
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<updated>2015-04-20T18:23:03+01:00</updated>

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<author><name><![CDATA[taford]]></name></author>
<updated>2015-04-20T18:23:03+01:00</updated>
<published>2015-04-20T18:23:03+01:00</published>
<id>https://forum.yubico.com/viewtopic.php?t=1838&amp;p=7215#p7215</id>
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<title type="html"><![CDATA[Re: [QUESTION] Mainframe Server Validation]]></title>

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thanks Tom, I had seen those items but was still lacking the origination of generating a key i could match against.  Short of the first bytes that identify a key i dont see how i can create one that is a match of hashes. not that that is the only way of verification<p>Statistics: Posted by <a href="https://forum.yubico.com/memberlist.php?mode=viewprofile&amp;u=3634">taford</a> — Mon Apr 20, 2015 6:23 pm</p><hr />
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<entry>
<author><name><![CDATA[Tom2]]></name></author>
<updated>2015-04-20T09:52:03+01:00</updated>
<published>2015-04-20T09:52:03+01:00</published>
<id>https://forum.yubico.com/viewtopic.php?t=1838&amp;p=7213#p7213</id>
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<title type="html"><![CDATA[Re: [QUESTION] Mainframe Server Validation]]></title>

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<!-- m --><a class="postlink" href="https://developers.yubico.com/OTP/">https://developers.yubico.com/OTP/</a><!-- m --><br /><br /><!-- m --><a class="postlink" href="http://www.yubico.com/wp-content/uploads/2015/03/YubiKeyManual_v3.4.pdf">http://www.yubico.com/wp-content/upload ... l_v3.4.pdf</a><!-- m --><p>Statistics: Posted by <a href="https://forum.yubico.com/memberlist.php?mode=viewprofile&amp;u=3364">Tom2</a> — Mon Apr 20, 2015 9:52 am</p><hr />
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<entry>
<author><name><![CDATA[taford]]></name></author>
<updated>2015-04-18T05:08:34+01:00</updated>
<published>2015-04-18T05:08:34+01:00</published>
<id>https://forum.yubico.com/viewtopic.php?t=1838&amp;p=7202#p7202</id>
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<title type="html"><![CDATA[[QUESTION] Mainframe Server Validation]]></title>

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I am interested in writing a mainframe validation server to enhance application security. I can't seem to find a good spec for decrypting a OTP for verification. The verification would be written in a combination of SQL, RPG and API's that perform encryption/decryption. Where can i find the methods for decryption of the OTP?  I understand the first 12 bytes for use in registering the user assigned a key.  It's the rest of the deconstruction I am looking for assistance in. Would rather implement a YUBIKEY than say, the GOOGLE authenticator. Thanks!<p>Statistics: Posted by <a href="https://forum.yubico.com/memberlist.php?mode=viewprofile&amp;u=3634">taford</a> — Sat Apr 18, 2015 5:08 am</p><hr />
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