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Alan Christensen asked

How to generate crypto key and encrypt/decrypt audio on SIP call with TLS 1.2?

I have a custom SIP phone that is working without TLS 1.2 on RingCentral but I want to update it to be more secure. Can you help me with the algorithm to generate the crypto inline key that I need to send on the INVITE request and the encrypt and decrypt method for the audio bytes? I have a SIP phone that we have programmed in Java.

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Developer sandbox tools

Using the RingCentral Phone for Desktop, you can dial or receive test calls, send and receive test SMS or Fax messages in your sandbox environment.

Download RingCentral Phone for Desktop:

Tip: switch to the "sandbox mode" before logging in the app:

  • On MacOS: press "fn + command + f2" keys
  • On Windows: press "Ctrl + F2" keys