Re: [recon-devel] SRTP: generate the local session key
That is correct. FYI - there are also some SRTP implementation notes
on the wiki:
http://www.resiprocate.org/Reflow_SRTP_Implementation_Notes
Scott
2009/1/19 Karlsson <boost.regex@xxxxxxxxx>:
> Hi, I'm reading recon source code this week, I found this code in
> unsigned int RemoteParticipantDialogSet::getLocalRTPPort():
>
>
> // Set other Srtp properties
> mLocalSrtpSessionKey = Random::getCryptoRandom(SRTP_MASTER_KEY_LEN);
>
>
> And this code in void RemoteParticipant::buildSdpOffer:
>
> case flowmanager::MediaStream::SRTP_AES_CM_128_HMAC_SHA1_32:
> crypto = "1 AES_CM_128_HMAC_SHA1_32 inline:" +
> mDialogSet.getLocalSrtpSessionKey().base64encode();
> audioMedium->addAttribute("crypto", crypto);
> crypto = "2 AES_CM_128_HMAC_SHA1_80 inline:" +
> mDialogSet.getLocalSrtpSessionKey().base64encode();
> audioMedium->addAttribute("crypto", crypto);
> break;
> default:
> crypto = "1 AES_CM_128_HMAC_SHA1_80 inline:" +
> mDialogSet.getLocalSrtpSessionKey().base64encode();
> audioMedium->addAttribute("crypto", crypto);
> crypto = "2 AES_CM_128_HMAC_SHA1_32 inline:" +
> mDialogSet.getLocalSrtpSessionKey().base64encode();
> audioMedium->addAttribute("crypto", crypto);
> break;
>
>
> In the RFC 4568:
> a = crypto : <tag> <crypto-suite> <key – params>[<sesson-params>]
> and the "key – params" has included "["|" lifetime] ["|" MKI ":" length]"
> sub items,
>
> So within recon, just used a random value for the "key – params" and does
> not support lifetime and MKI, right ?
>
> Thanks
>
>
>
>
> _______________________________________________
> recon-devel mailing list
> recon-devel@xxxxxxxxxxxxxxx
> List Archive: http://list.resiprocate.org/archive/recon-devel/
>