I'm thinking more that employing such circumvention for your own purposes would be hard to argue against, but publishing it publicly may not actually be defensi

I'm thinking more that employing such circumvention for your own purposes would be hard to argue against, but publishing it publicly may not actually be defensible under U.S. law, even with the fair use exemption. I think if I were thinking of publishing something like this I'd look at the outcome of lawsuits such as those surrounding the old DeCSS code (https://en.wikipedia.org/wiki/Universal_City_Studios,_Inc._v._Reimerdes https://en.wikipedia.org/wiki/Universal_City_Studios,_Inc._v...). I'm in the U.S. so for me something like this would be relevant. For those elsewhere there may still be issues as DMCA is the U.S. implementation of the WIPO (https://en.wikipedia.org/wiki/WIPO_Copyright_Treaty https://en.wikipedia.org/wiki/WIPO_Copyright_Treaty), so there may be issues elsewhere, too.