[asterisk-dev] Choosing Crypo Suite

[Mark Michelson]

On 09/12/2013 05:37 AM, sachin wrote:
> Hello,
>
> I am using Asterisk 11.2. How do I choose the crypto suite for the 
> users registered in sip.conf.
>
> As I am new to SRTP, please let me know how this can be done
>
> Thanks and Regards,
> Sachin

In general, the secure calling tutorial wiki page [1] can be a good 
start for learning about TLS and SRTP in Asterisk.

When it comes to SRTP crypto suites, you can set the "encryption_taglen" 
option in sip.conf to either 80 or 32 in order to use 
AES_CM_128_HMAC_SHA1_80 or AES_CM_128_HMAC_SHA1_32, respectively. The 
default is 80.


[1] https://wiki.asterisk.org/wiki/display/AST/Secure+Calling+Tutorial
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