Encrypt Analog voice directly over gsm by using raspberry pi3

No JB, Do not install APP, No Internet Connection Analog Voice Encryption Encrypting voice of mobile calls (GSM, CDMA, LTE, APP ... calls) directly. Encrypt voice contents before sending into cell phone. Prevent intercept at phone, base station and Telecom server site. Analog encryption guard against crack and hack. Secure your voice contents extremely. No APP Installation No Server involvement project doesn’t need internet connection. project communicate through voice channel. Won’t save or transfer log/key by 3rd party. Less exposure and higher security. Provide unlimited encrypted phone call minutes. No licenese limitation. Secure phone call forever. The phone is used to send encrypted voice between the parties. The piece contains two parts Part of the sender Part of the receiver Where the sender - sends the encrypted voice by phone to the other party The receiver part decrypts the voice and hears it normally This video is only to explain and understand the idea well [login to view URL] Working Conditions: The project discussion will be on this site and not on Skype The total cost of the project is between $ 50 - $ 200 maximum Final delivery time - maximum 5 days Programming language: - Java or Python