Thread: Finding a Key - C

Hi,
I was wondering would anybody have any ideas on my problem.

I am trying to find a key which encrypts a plaintext byte. I am using a limited exhaustive search and have reduced the number of bits need to be flipped.

here is my variable.

#define WORD16 unsigned short

WORD16 key[1]={0xffff};

now...is there anyway I can cycle through all possible values for this key and test the output. The key is in hex. At the moment I am using a counter, converting it to hex and it is getting rather messy!!! Basically is there an automated way I can get all possible values up to the hex value 0xffff.

Any suggestions would be very much appreciated....
thank you!!!

> now...is there anyway I can cycle through all possible values for this key and test the output.
A loop and an if statement seem like a good place to start.