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<p>I can confirm Daniels investigation in Pascal my implementation
looks like this:</p>
<p> keyIndexLowByte := Data[0];<br>
aKey := $123456789ABCDEF0*keyIndexLowByte;<br>
aKey := crc64(Typ+keyIndexLowByte and $FF,@aKey,8);<br>
nKey := parray(@aKey)^;<br>
</p>
<p>old:</p>
<p> scrambleTableIndex := (((Typ - 1) * 256) +
keyIndexLowByte);<br>
nKey := scrambleTable[scrambleTableIndex];<br>
</p>
<p>should be easy to re-implement it in c too</p>
<p>with this i dont need an scramble table anymore<br>
</p>
<div class="moz-cite-prefix">Am 19.01.20 um 19:10 schrieb Brett
Spell:<br>
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<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">I
agree with Christian: it’s great to have both (scramble
table or direct derivation) options, so thanks to you both
(Ross and Daniel) for sharing the information with us.<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">Brett<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>
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<p class="MsoNormal"><b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">
DJI-log-discuss
[<a class="moz-txt-link-freetext" href="mailto:dji-log-discuss-bounces@us.live555.com">mailto:dji-log-discuss-bounces@us.live555.com</a>] <b>On
Behalf Of </b>Christian U.<br>
<b>Sent:</b> Sunday, January 19, 2020 10:28 AM<br>
<b>To:</b> Discussion of DJI's log file formats<br>
<b>Subject:</b> Re: [DJI-log-discuss] Wrong handling in
RECOVER Record<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<p class="MsoNormal">i have to add <span class="cp"><span
style="font-size:10.0pt;font-family:"Courier
New"">#include <errno.h></span></span><o:p></o:p></p>
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<p class="MsoNormal">to <a
href="http://gitlab.stora.local/produkte/dji/djiparsetxt/commit/6d14c9f58612d7abf0dcc7a670e6bd2c8eeea7db#cd4aa6484a5080c3e53d4f2c4b7b761f7d09d2f0"
moz-do-not-send="true"><strong>djiparsetxt.cpp</strong></a>
to fix compiling with actual gcc<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<div>
<p class="MsoNormal">Am 19.01.20 um 15:46 schrieb Chris:<o:p></o:p></p>
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<p class="MsoNormal">Great work Ross, <br>
<br>
And also Thanks Daniel for the Information. I think my
english is too bad to completely get it. <br>
<br>
Daniel is it completely possible to implement an handler to
generate the key on the fly with the information you gave ?
<br>
<br>
I have tried to make an implementation based of an crc64
function in december but dont was able to recover all
parameters to the gtekey function completely. <br>
<br>
<br>
best regards and happy new year to all <br>
<br>
Christian <br>
<br>
Am 19.01.20 um 14:03 schrieb Ross Finlayson: <br>
<br>
<o:p></o:p></p>
<p class="MsoNormal" style="margin-bottom:12.0pt">FYI, the
latest version (2020-01-19) of the “djiparsetxt” code also
improves the processing of RECOVER records, as a result of
Christian’s feedback on December 20th. <br>
<br>
<br>
Ross Finlayson <br>
Live Networks, Inc. <br>
<a href="http://www.live555.com/" moz-do-not-send="true">http://www.live555.com/</a>
<br>
<br>
<o:p></o:p></p>
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<p><o:p> </o:p></p>
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