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!

63 0B 0B 00 20 06 0B 7E 48 20 15 0B 11 20 0F 0B
08 12 01 00 20 0B 0A 01 20 09 0B 0E 01 20 7F 04
7D 08 08 01 0A 03 01 20 05 0A 20 15 0B 11 0E 20
06 0B 11 0E 0A 01 15 4A 20 70 04 05 0F 20 0B 0A
01 20 13 7D 0F 20 02 7D 05 0E 08 15 20 01 7D 0F
15 20 10 0B 20 7F 0E 7D 7F 07 4A 20 73 7D 0F 0A
43 10 20 05 10 5B 20 4D 4E 54 20 07 01 15 0F 20
05 0F 20 7D 20 0D 11 05 10 01 20 0F 09 7D 08 08
20 07 01 15 0F 0C 7D 7F 01 48 20 0F 0B 20 05 10
20 0F 04 0B 11 08 00 0A 43 10 20 04 7D 12 01 20
10 7D 07 01 0A 20 15 0B 11 20 10 0B 0B 20 08 0B
0A 03 20 10 0B 20 00 01 7F 0E 15 0C 10 20 10 04
05 0F 20 09 01 0F 0F 7D 03 01 4A 20 73 01 08 08
20 00 0B 0A 01 48 20 15 0B 11 0E 20 0F 0B 08 11
10 05 0B 0A 20 05 0F 20 09 09 02 00 09 04 0A 7E
7E 01 7D 02 4A