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!

7A 22 22 17 20 1D 22 15 5F 20 2C 22 28 20 26 22
1F 29 18 17 20 22 21 18 20 20 22 25 18 20 16 1B
14 1F 1F 18 21 1A 18 20 1C 21 20 2C 22 28 25 20
1D 22 28 25 21 18 2C 61 20 07 1B 1C 26 20 22 21
18 20 2A 14 26 20 19 14 1C 25 1F 2C 20 18 14 26
2C 20 27 22 20 16 25 14 16 1E 61 20 0A 14 26 21
5A 27 20 1C 27 72 20 64 65 6B 20 1E 18 2C 26 20
1C 26 20 14 20 24 28 1C 27 18 20 26 20 14 1F 1F
20 1E 18 2C 26 23 14 16 18 5F 20 26 22 20 1C 27
20 26 1B 22 28 1F 17 21 5A 27 20 1B 14 29 18 20
27 14 1E 18 21 20 2C 22 28 20 27 22 22 20 1F 22
21 1A 20 27 22 20 17 18 16 25 2C 23 27 20 27 1B
1C 26 20 20 18 26 26 14 1A 18 61 20 0A 18 1F 1F
20 17 22 21 18 5F 20 2C 22 28 25 20 26 22 1F 28
27 1C 22 21 20 1C 26 20 20 20 19 17 20 1B 21 15
15 18 14 19 61