I guess you are done with Caesar I, aren't you?
The big problem with caesar is that it does not allow digits or other characters.
I have fixed this, and now I can use any ascii character in the plaintext.
The keyspace has increased from 26 to 128 too. \o/

Enjoy!

0D 35 35 2A 20 30 35 28 72 20 3F 35 3B 20 39 35
32 3C 2B 2A 20 35 34 2B 20 33 35 38 2B 20 29 2E
27 32 32 2B 34 2D 2B 20 2F 34 20 3F 35 3B 38 20
30 35 3B 38 34 2B 3F 74 20 1A 2E 2F 39 20 35 34
2B 20 3D 27 39 20 2C 27 2F 38 32 3F 20 2B 27 39
3F 20 3A 35 20 29 38 27 29 31 74 20 1D 27 39 34
6D 3A 20 2F 3A 05 20 77 78 7E 20 31 2B 3F 39 20
2F 39 20 27 20 37 3B 2F 3A 2B 20 39 33 27 32 32
20 31 2B 3F 39 36 27 29 2B 72 20 39 35 20 2F 3A
20 39 2E 35 3B 32 2A 34 6D 3A 20 2E 27 3C 2B 20
3A 27 31 2B 34 20 3F 35 3B 20 3A 35 35 20 32 35
34 2D 20 3A 35 20 2A 2B 29 38 3F 36 3A 20 3A 2E
2F 39 20 33 2B 39 39 27 2D 2B 74 20 1D 2B 32 32
20 2A 35 34 2B 72 20 3F 35 3B 38 20 39 35 32 3B
3A 2F 35 34 20 2F 39 20 2E 2C 39 34 33 2F 39 38
2D 2D 39 33 74