We are looking for an Android client that permit type a text message, encript it and send over gsm call. The call will be received by Asterisk SIP server, we need in the server side a software that can decript the audio encripted before in the Android client and extract the text was sent originally.
7 freelancers are bidding on average $800 for this job
Hi, I'm certainly interested in working with you on this -- but I think you might find you'll struggle to accomplish what you're asking. Please check the private message.