https://github.com/cisco/libsrtp supports aes256.



On Thu, Feb 27, 2014 at 11:05 PM, Robert Jongbloed <robertj@voxlucida.com.au> wrote:
From memory libsrtp does not support 256 bit AES, but I could be wrong.

If you wish to add the code for it, look into .../opal/src/rtp/srtp_session.cxx, it will either be very simple (duplicate the 128 bt one and adjust some number) or extremely difficult, requiring additions to libsrtp.

Robert Jongbloed
OPAL/OpenH323/PTLib Architect and Co-founder.
Commercial support at http://www.voxlucida.com.au
Travelling, so email responses may be slow!


      On 24/02/2014 8:05 pm, Pradeep Kumar wrote:
Hi Opal Dev Team,

I'm facing problem with SRTP/SIPS encryption. If I do sipEP->GetAllMediaCryptoSuites(), I get the following list:
 0 : Clear
 1 : SRTP: AES-128 & SHA1-32
 2 : SRTP: AES-128 & SHA1-8

And then I set them by sipEP->SetMediaCryptoSuites(allMethods).

The above works with #1 and #2 crypto suite. But, I've an end point which sends AES_CM_256_HMAC_SHA1_80 and hence it does not work and even I see core dump.

Query: What should do I do to support the crypto AES_CM_256_HMAC_SHA1_80.

-----------------------------------
Regards 
Pradeep Kumar 



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