Hi,

First off, thank you very much for the Diffie Hellman code. I have a question please. Once I have the 128 byte key using the Diffie Hellman implementation from this site, do you know where I can find a symmetric key encryption function that allows a key of such length? Most algorithms only allow keys of length up to 32 bytes (128 bits). Thank you very much.

Tim

Having a 32 bytes (or 256 bits) key is _more_ than enough for symmetric keys. A 256-bit key means that there are 2^256 possible key values, which is an enormous amount of keys. In fact, the current standard is a 128-bit symmetric key.