Idol Smasher
this was one of the strongest communications encryption systems developed by the New Republic, and was used to secure communications during the Yuuzhan Vong invasion of the galaxy. The Idol Smasher system was used by the Republic, the Imperial Remnant, the Hapes Consortium, and even the Chiss Ascendancy, so that the galaxy's major powers could coordinate efforts across interstellar distances without having their plans discovered by the alien invaders.