[Freeswitch-users] ZRTP errors in logs - are they significant?

Brian West brian at freeswitch.org
Fri May 29 06:15:59 PDT 2009

This is normal because the switch from clear to secure can happen  
quickly on one end or the other and you'll have a few packets that get  
thru before one end is ready... nothing to be worried about.


On May 29, 2009, at 5:02 AM, Jason White wrote:

> After ZRTP negotiation is complete (the ZRTP state machine has  
> entered the
> "secure" state), I get a number of lines in the log as follows  
> rev. 13501):
> 2009-05-29 16:43:19 [DEBUG] switch_rtp.c:538 zrtp_logger()  [zrtp  
> protoco]:
> ERROR! Decrypt failed. ID=14:DH s=SRTP authentication failure (RTP  
> size=172
> ssrc=2760088424 seq=53043/53043 pt=9)
> They all have a time stamp of shortly after the end of the protocol
> negotiation.
> Is this normal, or a sign of trouble?
> The call itself is fine, and ZRTP does not leave the secure state  
> until the
> end of the call:
> 2009-05-29 16:43:30 [DEBUG] switch_rtp.c:538 zrtp_logger()  [ zrtp  
> engine]:
> STOP STREAM ID=14 mode=DH state=SECURE.
> Are others seeing similar behaviour?

Brian West
brian at freeswitch.org

-- Meet us at ClueCon!  http://www.cluecon.com

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