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Re: LISP security query

Is anyone doing work on securing LISP packages from hackery.  That is,
suppose I wanted to write a function (system of functions) that would
perform some file access or another and did not want the password to
the file accessible.  I could perform various encryptions of the
password so that it was not availble by reading my functions but I
would prefer to be able to simply write a function that could not be
opened for editing (grinding, etc) and that had some way of verifying
that the functions that it called had not been tampered with.  The
latter is an obviously necessary requirement:the hacker could simply
replace OPEN with a function that printed out the password.  This is a
fully non- trivial problem, especially for LISP since it is so easy to
"fix" any function in the environment.

-- Jeff