Dear client
I have checked on your job posting carefully and came to the result that carry out the project.
I am native android expert ,mathematician,Signal processing expert.
I have full mastered on the math.
Thus, I can help for you.
That is , I can send message via encryption and decryption , receiver can read via decryption.
I will wait to reply from u.
Warmly hope your project will be mine
Kind Regards .