>The 3.5mm jack outputs the regular audio data. You could just make it output encrypted data, but that is the same as removing it, all the headphones won't work.
The 3.5mm jack outputs an analog signal. It's already been converted from digital data to an analog signal by the phone's DAC chip.
The 3.5mm jack outputs an analog signal. It's already been converted from digital data to an analog signal by the phone's DAC chip.