Linguistic Encryption for Underwater Communication

Underwater gliders communicating in an underwater acoustic environment face significant obstacles to implementing secure communications between devices. By adapting a constructed language, we aim to create a secure communication scheme which uses dolphin noises as acoustic signals and simple words as encoded command representations. Security features come from a psuedo-random permutation generator which integrates elements of a stream cipher with an ephemeral key. Our design was validated using experiments on Raspberry Pis in a laboratory setting.