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!

68 10 10 05 20 0B 10 03 4D 20 1A 10 16 20 14 10
0D 17 06 05 20 10 0F 06 20 0E 10 13 06 20 04 09
02 0D 0D 06 0F 08 06 20 0A 0F 20 1A 10 16 13 20
0B 10 16 13 0F 06 1A 4F 20 75 09 0A 14 20 10 0F
06 20 18 02 14 20 07 02 0A 13 0D 1A 20 06 02 14
1A 20 15 10 20 04 13 02 04 0C 4F 20 78 02 14 0F
48 15 20 0A 15 60 20 52 53 59 20 0C 06 1A 14 20
0A 14 20 02 20 12 16 0A 15 06 20 14 0E 02 0D 0D
20 0C 06 1A 14 11 02 04 06 4D 20 14 10 20 0A 15
20 14 09 10 16 0D 05 0F 48 15 20 09 02 17 06 20
15 02 0C 06 0F 20 1A 10 16 20 15 10 10 20 0D 10
0F 08 20 15 10 20 05 06 04 13 1A 11 15 20 15 09
0A 14 20 0E 06 14 14 02 08 06 4F 20 78 06 0D 0D
20 05 10 0F 06 4D 20 1A 10 16 13 20 14 10 0D 16
15 0A 10 0F 20 0A 14 20 0E 0E 07 05 0E 09 0F 03
03 06 02 07 4F