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<div class="moz-cite-prefix">Hello Yuri and Matthijs. <br>
<br>
I understand now why the behaviour is like this. I have a refresh
period of 21 days. The reason that it is this long is that if
opendnsssec would break down in some way there is absolutely no
stress to fix it ( except for dns changes ). I wonder if there
is any<b> </b>disadvantage in having double ZSK`s for such a
long period. <br>
<br>
<br>
With kind regards, <br>
<br>
Maurice<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
On 05/02/2014 09:14 AM, Matthijs Mekking wrote:<br>
</div>
<blockquote cite="mid:536345CB.40206@nlnetlabs.nl" type="cite">
<pre wrap="">On 05/01/2014 10:30 PM, Yuri Schaeffer wrote:
</pre>
<blockquote type="cite">
<pre wrap="">Hi Maurice,
</pre>
<blockquote type="cite">
<pre wrap="">I noticed that the signature validity time gets added to the
retire period for keys. I am wondering why this is ? I have a TTL
of 1 hour for the keys. My signature validity time is 28 days.
With a TTL of 1H for the keys I think that normally it would be
safe for the old ZSK to stay in the retire state for a few hours
and then be marked dead.
</pre>
</blockquote>
<pre wrap="">
Well the fact that your keys (i.e. DNSKEY records) will be cached for
1H says nothing about the TTL of the other records. Signatures get the
TTL of the records they are signing. As long as these records are
still cached the key must be (post)published.
</pre>
<blockquote type="cite">
<pre wrap="">But now it wil be in the retire state for 28 days. I think this is
strange. Or am I missing something ?
</pre>
</blockquote>
<pre wrap="">
What you are missing is what the signer does. Instead of generating
all new signatures with the new key at once it will only replace the
(soon to be) expired signatures. And keep both the new and old key
published until this transition is done. Which could potentially take
the validity time.
</pre>
</blockquote>
<pre wrap="">
This is called a smooth rollover.
Your keys will be in the retire state for about 28 days. The signer will
indeed reuse signatures created by the old key, as long as the time it
takes before those sigs are expired is longer than the Refresh period.
So if for example your Refresh period is set to 3 days (which is the
default), the rollover should be about 25 days plus some hours in the
retire state.
If you don't want the smooth rollover behavior, set the Refresh period
to PT0S.
Best regards,
Matthijs
</pre>
<blockquote type="cite">
<pre wrap="">
//Yuri
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</blockquote>
<pre wrap="">
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</pre>
</blockquote>
<br>
<br>
<div class="moz-signature">-- <br>
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<td style="font-size:10pt;line-height:12pt;"> Maurice Mahieu
</td>
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System Engineer | <a href="mailto:maurice@info.nl"
style="color:#000;text-decoration:none;">maurice@info.nl</a>
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style="color:#000;text-decoration:none;"><em
style="color:#000;text-decoration:none;">connecting
the dots</em></a> </td>
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Sint Antoniesbreestraat 16 | 1011 HB Amsterdam | <a
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