I think Nada Amin has already done something like this with the nominal
feature and at least her version was quite simple. Best to ask this
question on the miniKanren/core.logic mailing list -
http://groups.google.com/forum/#!forum/minikanren

David


On Sat, May 25, 2013 at 8:44 PM, Adam Saleh <adamthecam...@gmail.com> wrote:

> Hi,
>
> I am trying to implement a simple knowledge derivation program in
> clojure.core.logic,
> and I am not sure how to approach it. To be more specific, after I am
> done, it will be used as a toy cryptographic protocol verifier,
> that tries to infer what knowledge can attacker get based on some initial
> knowledge and some rules.
>
> For example, I might denote [:pk A] a knowledge of public key of somebody
> and [:pcrypted [:pk A] :nonce] an encrypted nonce sent to this person.
>
> Then I'd like be able to somehow specify, that if I know [:pk A], I know
> as well [:pcrypted [:pk A] [:nonce A]] and therefore my program would
> derive from initial knowledge
>
> [ [:pk :a]  [:pk :b] ] the full knowledge [[:pk :a]  [:pk :b] [:pcrypted
> [:pk :a] [:nonce :a]] [:pcrypted [:pk :b] [:nonce :b]]]
>
> Or in slightly more difficult case to specify that if I know a secret key
> [:sk A] and encrypted nonce [:pcrypted [:pk A] [:nonce A]], I also know the
> [:nonce a].
>
> Anybody has any hints?
>
> So far I managed to implement some of this, but it is a tangled mess of
> recursive pattern matching, membero, nonmembero and macros :-/
>
> Thanks for any pointers,
>
> Adam
>
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