Delegating trust. We do use these words, we keep going back to them, you know, what is trust, what is delegation. I’m sure it will come to a great relief to many of you that I’m not going to talk too much about trust but I would like to point out that in common with many of the terms we use in security, there doesn’t seem to be any general agreement on what it is. There’s the orange book definition: a component of the system that can violate the security of the system. There are uses of trust that are indistinguishable from belief. There are attempts not to use the word at all. I have my own definition, but I won’t bore you with that today. Needless to say though, this does cause confusion. It’s almost unavoidable that we use the term but what I thought I would talk about today is the relationship between trust and delegation, because I think there is a relationship.