Mea Culpa

Whoops. I've been a bit of an arse and managed to delete all of the images associated with the cryptography pages. Fortunately, I had backups....

I will try to put back as many as I can, and will give preferential attention to any posts that are commented upon as regards broken images - this does, of course, rather assume that some person doesn't comment every post. This will simply be ignored as unhelpful.

The idea here is that the comments will help me if I miss any.