title: How to make fingerprint and decode in webrtc sdp
body: <p>now I need to make webrtc SDP -> normal SDP.</p>
  
  <p>so I need to encode and decode fingerprint in webrtc.  I think that fingerprint is SRTP encrypt method.</p>
  
  <p>anyone have experience decode and encode fingerprint. I need following step</p>
  
  <p>WEBRTC SDP -> signal server(decode fingerprint,  make normal rtp SDP) -> sip client.</p>
  
  <p>sip client SDP(normal rtp) -> signal server(encode fingerprint, make webrtc sdp) -> WEBRTC.</p>
  
  <p>and we decode and encode SRTP in turn server...</p>
  
  <p>please help me</p>