<div dir="ltr">Hi,<div><br></div><div>I am encrypting SIP and RTP message before sending it from sip mobile dialer and it sends UDP packet over network. So no one can know about the type (SIP or RTP) of packet until we decrypt it. This is for secured call and also solution for voip blocked countries.</div>
<div><br></div><div>I want to know which file or module is used in opensips to get and send udp packets? when opensips receives message , i will decrypt it and before send response to mobile dialer , i will encrypt the message. Same for rtpproxy server.</div>
<div><br></div><div><br></div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Wed, Jun 25, 2014 at 2:41 PM, Bogdan-Andrei Iancu <span dir="ltr"><<a href="mailto:bogdan@opensips.org" target="_blank">bogdan@opensips.org</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
<div><tt>Hi Kaushik,<br>
<br>
So the while SIP package is encrypted . It is not easy to add
hooks before the SIP stack (between transport layer and SIP
stack), but can be done - could you provide more details how the
encryption / decryption works, if over UDP or TCP, etc ?<br>
<br>
Regards,<br>
</tt>
<pre cols="72">Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
<a href="http://www.opensips-solutions.com" target="_blank">http://www.opensips-solutions.com</a></pre><div><div class="h5">
On 25.06.2014 09:26, kaushik parmar wrote:<br>
</div></div></div><div><div class="h5">
<blockquote type="cite">
<div dir="ltr">Hi <span style="font-size:13px;font-family:arial,sans-serif">Adrian,</span>
<div><span style="font-family:arial,sans-serif;font-size:13px"><br>
</span></div>
<div><font face="arial, sans-serif">It is not OTR. Actually we
have own algorithm for encryption and decryption of sip and
rtp packets. We implemented it in our SIP mobile dialer. Now
we need to implement it on proxy server. I want to add
encryption and decryption code in opensips</font><span style="font-family:arial,sans-serif"> </span><span style="font-family:arial,sans-serif">(and rtpproxy)</span><span style="font-family:arial,sans-serif"> so opensips (rtpproxy)
can come to know that it is SIP and rtp packets. Can you
please tell me where should i add this code in opensips? I
am searching for file where opensips getting sip messages
and from where it sends/forward sip messages.</span></div>
</div>
<div class="gmail_extra"><br>
<br>
<div class="gmail_quote">On Tue, Jun 24, 2014 at 3:30 PM, <span dir="ltr"><<a href="mailto:devel-request@lists.opensips.org" target="_blank">devel-request@lists.opensips.org</a>></span>
wrote:<br>
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Today's Topics:<br>
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1. Re: [OpenSIPS-Users] Encrypt and Decrypt sip
signals<br>
(<a href="mailto:ag@ag-projects.com" target="_blank">ag@ag-projects.com</a>)<br>
<br>
<br>
----------------------------------------------------------------------<br>
<br>
Message: 1<br>
Date: Mon, 23 Jun 2014 16:11:46 -0300<br>
From: <a href="mailto:ag@ag-projects.com" target="_blank">ag@ag-projects.com</a><br>
Subject: Re: [OpenSIPS-Devel] [OpenSIPS-Users] Encrypt and
Decrypt sip<br>
signals<br>
To: OpenSIPS users mailling list <<a href="mailto:users@lists.opensips.org" target="_blank">users@lists.opensips.org</a>><br>
Cc: OpenSIPS devel mailling list <<a href="mailto:devel@lists.opensips.org" target="_blank">devel@lists.opensips.org</a>><br>
Message-ID: <<a href="mailto:2EA9531B-F5B8-42EF-B513-395B6A493175@ag-projects.com" target="_blank">2EA9531B-F5B8-42EF-B513-395B6A493175@ag-projects.com</a>><br>
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<br>
Perhaps is using OTR? In this case the encryption is
end-to-end and cannot be handled by an intermediary as it
defies the purpose.<br>
<br>
Adrian<br>
<br>
On 23 Jun 2014, at 04:24, Olle E. Johansson <<a href="mailto:oej@edvina.net" target="_blank">oej@edvina.net</a>>
wrote:<br>
<br>
><br>
> On 23 Jun 2014, at 09:12, kaushik parmar <<a href="mailto:androidjpc0@gmail.com" target="_blank">androidjpc0@gmail.com</a>>
wrote:<br>
><br>
>> Hello All,<br>
>><br>
>> My Android mobile SIP Dialer is sending Encrypted
SIP messages<br>
> Is it actually using S/MIME to decrypt on a per-message
basis or do you mean it's using TLS as a transport?<br>
><br>
> /O<br>
><br>
>> and i want to decrypt that SIP message on opensips
proxy server. Opensips server will Decrypt the sip request
and forward it to my voip server. Same way it will take sip
request of voip switch , Encrypt it and send Encrypted SIP
request to Android mobile Application.<br>
>><br>
>> Can anyone tell me where should i write Encryption
and Decryption code in opensips? Is there any particular
file in which i can write my encryption code?<br>
>><br>
>><br>
>> --<br>
>> Kind regards,<br>
>><br>
>> Kaushik Parmar<br>
>> _______________________________________________<br>
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</blockquote>
</div>
<br>
<br clear="all">
<div><br>
</div>
-- <br>
<div dir="ltr">
<div>
<div><font face="arial">Kind regards,</font></div>
<div><font face="arial"><br>
</font></div>
<div><font face="arial">Kaushik Parmar</font></div>
</div>
</div>
</div>
<br>
<fieldset></fieldset>
<br>
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</blockquote>
<br>
</div></div></div>
</blockquote></div><br><br clear="all"><div><br></div>-- <br><div dir="ltr"><div><div><font face="arial">Kind regards,</font></div><div><font face="arial"><br></font></div><div><font face="arial">Kaushik Parmar</font></div>
</div></div>
</div>