Hi Pietro, If you don't mind me asking, why?
From my understanding (disclaimer: not a maintainer of the openssl egg nor CHICKEN core maintainer), I think current-milliseconds can stay for now. current-milliseconds has been deprecated in 5.3 but hasn't been removed yet, it's an "alias" for current-process-milliseconds. So everything should work with current-milliseconds in 5.3 and 5.x before it. But if it was changed to current-proess-milliseconds the openssl egg would no longer work with 5.x before 5.3.
Thanks, siiky
