on DTLS this setting is currently a no-op and the suites it uses are hard coded.

On May 9, 2018, at 2:21 PM, Mirko Brankovic <mirkobrankovic@gmail.com> wrote:

Hi,
I had a same problem.
Was debugging a different handshake problem, and wanted to try other chipers, but failed.
Looks like the setting is not applied at all, and would be nice to use cheeper (network wise) encroption

On Wed, May 9, 2018, 00:52 Aqs Younas <aqsyounas@gmail.com> wrote:
I would also be interested to know if you make this work. 

Best Regards, 

Aqs Younas

On 8 May 2018 at 22:11, Jerry Chinn <JHChinn@thenavisway.com> wrote:

Good Day,

Running FS 1.6.17 on CentOS 7.4

 

We are running WebRTC and are required to use AEAD_AES_256_GCM_8 or AEAD_AES_128_GCM_8 for security.

I have eliminated all of the options in the vars file except rtp_sdes_suites=AEAD_AES_256_GCM_8|AEAD_AES_128_GCM_8.

 

Calls are successfully completing, however, in debug we are seeing AES_CM_128_HMAC_SHA1_80 as the sdes suite for srtp:dtls.

 

2018-05-04 22:38:30.429310 [INFO] switch_rtp.c:3185 Changing audio DTLS state from HANDSHAKE to SETUP

2018-05-04 22:38:30.450549 [INFO] switch_rtp.c:3094 audio Fingerprint Verified.

2018-05-04 22:38:30.450549 [INFO] switch_rtp.c:3908 Activating audio Secure RTP SEND

2018-05-04 22:38:30.450549 [DEBUG] switch_core_sqldb.c:2617 Secure Type: srtp:dtls:AES_CM_128_HMAC_SHA1_80

2018-05-04 22:38:30.450549 [INFO] switch_rtp.c:3886 Activating audio Secure RTP RECV

2018-05-04 22:38:30.450549 [INFO] switch_rtp.c:3134 Changing audio DTLS state from SETUP to READY

2018-05-04 22:38:30.450549 [DEBUG] switch_core_sqldb.c:2617 Secure Type: srtp:dtls:AES_CM_128_HMAC_SHA1_80

2018-05-04 22:38:30.450549 [DEBUG] switch_rtp.c:1885 rtcp_stats_init: audio ssrc[3910337773] base_seq[2433]

 

Any ideas on how or where to change this to the desired encryption protocol?

 

Jerry Chinn

Telecom VoIP Specialist

.

 


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