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SRTP authentication length configurable ?


David Bernard
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Hello,

 

I have a question regarding SRTP/SDES. Is it possible to configure pbxnsip to use SDES with a SRTP authentication tag length of 80 bits (AES_CM_128_HMAC_SHA1_80) by default? Because of what I see, it uses a tag length of 32 bits (AES_CM_128_HMAC_SHA1_32), even if 80 bits is supported for incoming calls.

 

For information, I am testing pbxnsip version 3.1.2.3120 (Win32).

 

Regards,

David

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I have a question regarding SRTP/SDES. Is it possible to configure pbxnsip to use SDES with a SRTP authentication tag length of 80 bits (AES_CM_128_HMAC_SHA1_80) by default? Because of what I see, it uses a tag length of 32 bits (AES_CM_128_HMAC_SHA1_32), even if 80 bits is supported for incoming calls.

 

Hmm. No that is hard coded. IMHO the 80 bits are just overkill, why would you need it?

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