Crypto challenge 1

Showcasing a simple rotation cipher that differs for lower, upper, and digits. Input is give, rotated, and printed. Challenger is expected to explain how each alters the input.
Crypto challenge 2

Intended as an example of a simple block cipher. Output of both plain and cipher text is displayed in hex notation.
Crypto challenge 3

Again, merging our concepts, this shifts then xors the input. Correct explainations include distance of shift, and effect on input of xor.