The only mention of a HNC encryption I can find is this in an entry on google books (<a href="http://lmgtfy.com/?q=hnc+encryption" target="_blank">http://lmgtfy.com/?q=hnc+encryption</a>)<div><br></div><div>"HNC: A series of proprietary and undocumented encryption algorithms developed by the HNC Network (<a href="http://www.hack-net.com" target="_blank">www.hack-net.com</a>), HNC is designed to create access codes for software package distributions".</div>
<div><br></div><div>Assuming it's the same HNC...</div><div>1) It's proprietary/undocumented. Completely non-standard and unlikely to ever be supported by other software.</div><div>2) It sounds like its not even designed for this type if usage, which concerns me</div>
<div>3) I always regard any nonstandard encryption with sceptism. Usually they're not as secure as the designers believe.<span></span></div><div><br></div><div>Anyway long and short of it is its not standard and probably vendor specific (I found a mention huawei might use it?) I don't think you'll get it to work with fs or almost anything else, and if encrypted DTMF is needed then the standard SRTP would be a far better way to achieve it.<br>
<div><br></div>
<div><br><br><div class="gmail_quote">On 1 June 2013 07:29, afshin afzali <span dir="ltr"><<a href="javascript:_e({}, 'cvml', 'a.afzali2003@gmail.com');" target="_blank">a.afzali2003@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi Brian,<br>
<br>
They refers to a spec. so called HNC1 !<br>
Would you search this key in<br>
<a href="http://www.scribd.com/doc/100596037/01-07-Configuring-Trunk-Data" target="_blank">http://www.scribd.com/doc/100596037/01-07-Configuring-Trunk-Data</a><br>
<br>
BEST,<br>
Afshin<br>
<div><div><br>
On 5/30/13, afshin afzali <<a href="javascript:_e({}, 'cvml', 'a.afzali2003@gmail.com');" target="_blank">a.afzali2003@gmail.com</a>> wrote:<br>
> Sure,<br>
> Thanks Brian<br>
><br>
><br>
> On Wed, May 29, 2013 at 6:27 PM, Brian Foster <<a href="javascript:_e({}, 'cvml', 'bdfoster@davri.com');" target="_blank">bdfoster@davri.com</a>> wrote:<br>
><br>
>> Your operator is likely talking about the DTMF 'method' (inband, SIP<br>
>> INFO,<br>
>> rfc2833), not encryption. In which case yoi are probably set up to do<br>
>> that<br>
>> already. Post a console log of a sample call on pastebin.freeswitch.orgif<br>
>> yiu want is to confirm, and reply to this thread with a link.<br>
>><br>
>> - BDF<br>
>> On May 29, 2013 9:45 AM, "afshin afzali" <<a href="javascript:_e({}, 'cvml', 'a.afzali2003@gmail.com');" target="_blank">a.afzali2003@gmail.com</a>> wrote:<br>
>><br>
>>> Hi Mike,<br>
>>><br>
>>> Actually I'm not. This is a request from my local operator. As you said<br>
>>> I<br>
>>> told them that is possible to encrypt entire rtp stream by SRTP / ZRTP<br>
>>> techniques. She says me that (on Huawei Switch) the encryption option<br>
>>> just<br>
>>> there when she selects rfc2833 for digit handling and not on entire<br>
>>> media<br>
>>> stream !!!<br>
>>> Thank you so much,<br>
>>><br>
>>> Afshin<br>
>>><br>
>>><br>
>>> On Wed, May 29, 2013 at 4:44 PM, Michael Jerris <<a href="javascript:_e({}, 'cvml', 'mike@jerris.com');" target="_blank">mike@jerris.com</a>> wrote:<br>
>>><br>
>>>> We support SRTP, which encrypts the entire media stream including the<br>
>>>> 2833 digits. I'm not familiar with a standard that just encrypts the<br>
>>>> dtmf.<br>
>>>> Did they provide any details of what this standard is?<br>
>>>><br>
>>>> Mike<br>
>>>><br>
>>>> On May 29, 2013, at 5:14 AM, afshin afzali <<a href="javascript:_e({}, 'cvml', 'a.afzali2003@gmail.com');" target="_blank">a.afzali2003@gmail.com</a>><br>
>>>> wrote:<br>
>>>><br>
>>>> > Hi Guys,<br>
>>>> ><br>
>>>> > I don't know if FreeSWITCH is capable of to exchange encrypted<br>
>>>> > rfc2833<br>
>>>> dtmf digits. My voip provider uses a Huawei switch and does ask me to<br>
>>>> enable dtmf encryption but I could not find such parameter in<br>
>>>> sofia.xml.conf file.<br>
>>>> ><br>
>>>><br>
>>>><br>
>>>> _________________________________________________________________________<br>
>>>> Professional FreeSWITCH Consulting Services:<br>
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>>>><br>
>>>> FreeSWITCH-powered IP PBX: The CudaTel Communication Server<br>
>>>> <a href="http://www.cudatel.com" target="_blank">http://www.cudatel.com</a><br>
>>>><br>
>>>> Official FreeSWITCH Sites<br>
>>>> <a href="http://www.freeswitch.org" target="_blank">http://www.freeswitch.org</a><br>
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>>>><br>
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>>>><br>
>>><br>
>>><br>
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>>> Professional FreeSWITCH Consulting Services:<br>
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>>><br>
>>> FreeSWITCH-powered IP PBX: The CudaTel Communication Server<br>
>>> <a href="http://www.cudatel.com" target="_blank">http://www.cudatel.com</a><br>
>>><br>
>>> Official FreeSWITCH Sites<br>
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>>><br>
>>><br>
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>> Professional FreeSWITCH Consulting Services:<br>
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>><br>
>> FreeSWITCH-powered IP PBX: The CudaTel Communication Server<br>
>> <a href="http://www.cudatel.com" target="_blank">http://www.cudatel.com</a><br>
>><br>
>> Official FreeSWITCH Sites<br>
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>><br>
>><br>
><br>
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</div></div></blockquote></div><br></div></div>