Warning. This exercise is probably very hard even prohibitive for those who don't know primitive polynomials over finite fields. In this case please prefer Decrypt which is mathematically much more rudimentary.
Graphical decrypt is an exercise on the algebraic cryptology based on pseudo-random sequences generated by primitive polynomials over a finite field . You will be presented a picture composed of pixels, crypted by such a sequence. This picture has colors, each color representing an element .
And your goal is to decrypt this crypted picture, by finding back the primitive polynomial as well as the starting terms which determine the pseudo-random sequence.
Please take note that WIMS pages are interactively generated; they are not ordinary HTML files. They must be used interactively ONLINE. It is useless for you to gather them through a robot program.