I’ll take what I can get at this point.  It has that old taste of failure…

I’ve been trying to reinvent the wheel and develop a means for a plain-text attack for Bifid to see if it reveals anything for Kryptos.  I’m using “Berlin” and hoping for the best.

Here is the link: Bifid plain-text attack on K4

Of course if you have already done this or have a computer program or a better method please feel free to tell me.  I’d like to think I’m on the right track with my methodology but am definitely open to feedback.