You want to do interaction cryptography animation by flash and action script.
The program for learning purpose
1- one screen of text tutorial with sound.
2- second screen the structure that is flow box if the user move the mouse on the any box the sound explain this box
3- third screen the animation of primitive cryptography that the user enter key and text then there is sex steps show how the progress following until the result.
4- four screen in calculate by the user enter text and key and show the result immediately
5- one screen for quiz.