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!

7D 25 25 1A 20 20 25 18 62 20 2F 25 2B 20 29 25
22 2C 1B 1A 20 25 24 1B 20 23 25 28 1B 20 19 1E
17 22 22 1B 24 1D 1B 20 1F 24 20 2F 25 2B 28 20
20 25 2B 28 24 1B 2F 64 20 0A 1E 1F 29 20 25 24
1B 20 2D 17 29 20 1C 17 1F 28 22 2F 20 1B 17 29
2F 20 2A 25 20 19 28 17 19 21 64 20 0D 17 29 24
5D 2A 20 1F 2A 75 20 67 68 6E 20 21 1B 2F 29 20
1F 29 20 17 20 27 2B 1F 2A 1B 20 29 23 17 22 22
20 21 1B 2F 29 26 17 19 1B 62 20 29 25 20 1F 2A
20 29 1E 25 2B 22 1A 24 5D 2A 20 1E 17 2C 1B 20
2A 17 21 1B 24 20 2F 25 2B 20 2A 25 25 20 22 25
24 1D 20 2A 25 20 1A 1B 19 28 2F 26 2A 20 2A 1E
1F 29 20 23 1B 29 29 17 1D 1B 64 20 0D 1B 22 22
20 1A 25 24 1B 62 20 2F 25 2B 28 20 29 25 22 2B
2A 1F 25 24 20 1F 29 20 23 23 1C 1A 23 1E 24 18
18 1B 17 1C 64