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!

49 71 71 66 20 6C 71 64 2E 20 7B 71 77 20 75 71
6E 78 67 66 20 71 70 67 20 6F 71 74 67 20 65 6A
63 6E 6E 67 70 69 67 20 6B 70 20 7B 71 77 74 20
6C 71 77 74 70 67 7B 30 20 56 6A 6B 75 20 71 70
67 20 79 63 75 20 68 63 6B 74 6E 7B 20 67 63 75
7B 20 76 71 20 65 74 63 65 6D 30 20 59 63 75 70
29 76 20 6B 76 41 20 33 34 3A 20 6D 67 7B 75 20
6B 75 20 63 20 73 77 6B 76 67 20 75 6F 63 6E 6E
20 6D 67 7B 75 72 63 65 67 2E 20 75 71 20 6B 76
20 75 6A 71 77 6E 66 70 29 76 20 6A 63 78 67 20
76 63 6D 67 70 20 7B 71 77 20 76 71 71 20 6E 71
70 69 20 76 71 20 66 67 65 74 7B 72 76 20 76 6A
6B 75 20 6F 67 75 75 63 69 67 30 20 59 67 6E 6E
20 66 71 70 67 2E 20 7B 71 77 74 20 75 71 6E 77
76 6B 71 70 20 6B 75 20 6F 6F 68 66 6F 6A 70 64
64 67 63 68 30