input1 : 05 26 2C 52 69 14 3F 31 4C 2A 69 65 1A 26 4B
input2 : 61 07 28 41 3B 63 07 2C 52 22 21 69 72 0B 42 5E
answer : 41 43 4D 20 49 43 50 43 20 4E 45 45 52 43 27 32
(P.S : I put the spaces only for that is easy to read && understand)
Why is first 2 bytes in answer is 41...?
Cuz, 61h xor 20h = 41h (20h -> 32d = ' ' = Space);
How to find the second,third,...?
41h xor 05h = 44h
44h xor 07h = 43h(Second 2 bytes);
43h xor 26h = 65h
65h xor 28 = 4Dh (Third 2 bytes);
Last some tips:
if you use algos for convert from Dec to Hex be careful;
your algo should convert
1 : 0d to 00h (not to 0h);
2 : 5d to 05h (not to 5h);
GoodLuck!!! ;-)

Edited by author 17.05.2009 08:41