[asterisk-bugs] [JIRA] (ASTERISK-21323) Asterisk 11 svn branch and srtp - white noise only

[andrea (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-21323?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=204613#comment-204613 ] 

andrea commented on ASTERISK-21323:
-----------------------------------

anyway the original report to the dev mailing list 
was posted by Martin Koening. It seems he already found 
the possible cause of the problem, look at: 

http://article.gmane.org/gmane.comp.telephony.pbx.asterisk.devel/56248

he said that: 

"Look at the crypto logging. When Asterisk is processing the remote SDP answer, 
it is logging his own key and not the one from SDP – I assume that it is then 
trying to decode the remote srtp stream with the wrong key, and not with the 
proper remote from the SDP. This would explain the white noise."


                
>  Asterisk 11 svn branch and srtp - white noise only
> ---------------------------------------------------
>
>                 Key: ASTERISK-21323
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-21323
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Channels/chan_sip/SRTP
>    Affects Versions: SVN, 11.3.0
>         Environment: ubuntu 12.10 / 12.04 64bit
>            Reporter: andrea
>            Assignee: andrea
>            Severity: Critical
>         Attachments: myDebugLog, sip.conf
>
>
> Hi all,
>  
> we have just updated our Asterisk 11 testbed from 11.2.1 to 11.3.0-rc1. Now we notice that all sRTP calls fail with “white noise” in the media channel phone > asterisk.
>  
> Example 1:
>  
> Snom w/ srtp > asterisk > Yealink w/ srtp
> Both ends hear “white noise”
>  
> Snom w/ srtp > asterisk > Gigaset w/o srtp
> Snom hears Gigaset, Gigaset hears white noise.
>  
> There have been no other changes to the setup, SIP.conf  specifies
>  
> transport=tls
> encryption=yes
>  
> for the sRTP phones.
>  
> Asterisk is linked to libsrtp 1.4.2.
>  
> Here is the log (that imho looks good):
> \[inline log removed\]

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