I have created an advanced version of the simple substitution cipher.
It can now use chars in range from 0-255, but that should not stop you.
The ciphertext is in the language of this text, and uses correct punctuation and case-sensitivity.

4E 23 E9 EF 39 B4 6B A1 B7 B4 6B F8 23 E9 3C 19
56 E7 D4 F8 3C 56 23 E9 F5 56 3D B4 3C 56 D4 B4
39 2D F5 39 7D 56 FA A1 6B 56 14 23 A1 56 EF 23
6B 56 F8 6B 19 56 4F F5 39 14 56 3D F5 B7 B7 56
2D 23 E9 F5 56 9E F5 B7 B7 23 3D 56 D4 B4 96 10
F5 39 19 56 E7 D4 F5 56 55 39 23 FA B7 F5 4D 56
3D F8 6B D4 56 6B D4 F8 3C 56 96 F8 55 D4 F5 39
56 F8 3C 56 6B D4 B4 6B 56 6B D4 F5 56 10 F5 14
56 F8 3C 56 55 39 F5 6B 6B 14 56 B7 23 E9 EF 19
56 1C 56 3D F8 B7 B7 56 96 23 4D F5 56 A1 55 56
3D F8 6B D4 56 B4 56 FA F5 6B 6B F5 39 56 F5 E9
96 39 14 55 6B F8 23 E9 56 3C D4 F5 4D F5 56 B4
E9 14 56 3C 23 23 E9 19 56 63 23 A1 39 56 3C 23
B7 A1 6B F8 23 E9 56 F8 3C 75 56 B4 55 2D B7 39
F5 39 F8 B4 E9 D4 D4 19