title: TLS and SRTP certificate in android linphone project
body: <p>we have an Android Application with linphone library for voice calling (sip server - asterisk). </p>
  
  <p>we need to switch transport mode from TCP to TLS  and change media encryption to SRTP  for secure communications.</p>
  
  <p>my problem is how can i embed and use .CA and .pem certificate file in Linphone project. i searched about it but could not find any good solution. </p>
  
  <p>can anybody help me and save my life ? </p>
  
  <p>thank you so mouch. </p>