It may seem that this is a programming question, but I just need advice on the cryptography side of the question. I want to implement the Diffie-Hellman key exchange algorithm on iOS (since no free library with easy integration exists). I'm wondering how the implementation would be if the parameters would be – for example – 128 bytes of data, instead of integers.
I'm looking for instructions so that I find out how I should implement it because performing such operations on non-integers is quite ambiguous to me.
Sorry if it's a newbie question, but I'm new to this concept.
Any suggestions is really appreciated.