Abdi Wahab1, Rizal Bahaweres2 dan Mudrik Alaydrus3
Abstract – The use of VoIP in Indonesia industries is still very low, it’s caused by security problem that haven’t guarenteed by VoIP provider. For this security problem, VoIP users can only access the VoIP client, but not for the VoIP server build by VoIP provider. So, to secure the communication, users can secure the communication data transmitted via VoIP network, with adding encryption module into VoIP client. The growing use of smartphone also effect the increase of mobile application development, one of them is mobile VoIP client apps. This research try to integrate encryption module in VoIP client application especially for Android smartphone. Research methodology for this research use prototyping method for developing VoIP client integrated with encryption module. From the prototyping model, the module will be tested by communicated with the module. The results from the testing with black box method, obtained that the integrated encryption modul can run well to encrypt communication data.
Key Words: VoIP, VoIP Client, Encryption