00:00 <lavaflow> I threw together a (really shitty) implementation for it: https://gist.github.com/jgreco/147503479916d08e3efb6291678f6016

00:04 <vraid> nisstyre: a flawless scheme

14:06 <jarindyk2> hi. is there a way to wipe the secrets? since racket uses GC, we cannot have absolute control over when a piece of sensitive information is removed from memory, but is there a way we could do something like explicit_bzero? or should I run (collect-garbage 'minor) and hope for the best, or what's the strategy? what about eliminating swapping to disk, is that possible? (mlock and munlock perhaps)... or my

14:06 <jarindyk2> question is, is racket suitable for high-security programs that must withstand local attacks against values stores in memory? is it possible to erase values securely?

17:46 <dzoe> jarindyk2: for what kind of data? If it is mutable and fixed size (bytes, vector, ...), it should not move (but you should check this assumption in documentation/source) and you can safely overwrite its contents either when you deem that appropriate or within a (will-executor?).

17:46 <dzoe> jarindyk2: memory locking, I am afraid, is not possible without some hacks.

17:48 <dzoe> For ffi/unsafe stuff based upon (malloc) and such, it should be perfectly possible to mlock them using a ffi call to mlock.

19:39 <plathrop> save

19:51 <selimcan> 'sup

20:53 <lavaflow> can somebody help me understand what I'm doing wrong here? https://gist.github.com/jgreco/1c5e4e09573f0daf48f231563f9aa346

20:54 <lavaflow> I'm trying to create an implementation of #%top that searches at runtime for an identifier inside a hash if there is no top level binding for it

20:56 <lavaflow> oh, I think I got it

20:56 <lavaflow> #`(lookup-plugin-id '#,sym) instead of #`(lookup-plugin-id #,sym)

20:58 <lavaflow> (I updated the gist accordingly) can somebody review that code and tell me what you think? is my approach to this reasonable?

20:59 <lavaflow> I'm going to swap out the hash with something a bit more sophisticated to facilitate adding and removing plugins dynamically, as well as reordering their 'load order', etc.

21:26 <jcowan> Does anyone know how Racket decides when to clear entries from weak hash tables? Does it use guardians?