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!

42 6A 6A 5F 20 65 6A 5D 27 20 74 6A 70 20 6E 6A
67 71 60 5F 20 6A 69 60 20 68 6A 6D 60 20 5E 63
5C 67 67 60 69 62 60 20 64 69 20 74 6A 70 6D 20
65 6A 70 6D 69 60 74 29 20 4F 63 64 6E 20 6A 69
60 20 72 5C 6E 20 61 5C 64 6D 67 74 20 60 5C 6E
74 20 6F 6A 20 5E 6D 5C 5E 66 29 20 52 5C 6E 69
22 6F 20 64 6F 3A 20 2C 2D 33 20 66 60 74 6E 20
64 6E 20 5C 20 6C 70 64 6F 60 20 6E 68 5C 67 67
20 66 60 74 6E 6B 5C 5E 60 27 20 6E 6A 20 64 6F
20 6E 63 6A 70 67 5F 69 22 6F 20 63 5C 71 60 20
6F 5C 66 60 69 20 74 6A 70 20 6F 6A 6A 20 67 6A
69 62 20 6F 6A 20 5F 60 5E 6D 74 6B 6F 20 6F 63
64 6E 20 68 60 6E 6E 5C 62 60 29 20 52 60 67 67
20 5F 6A 69 60 27 20 74 6A 70 6D 20 6E 6A 67 70
6F 64 6A 69 20 64 6E 20 68 68 61 5F 68 63 69 5D
5D 60 5C 61 29