Ok, so apparently this is what that error means: http://www.gnupg.org/faq/GnuPG-FAQ.html#why-do-i-get-gpg_warning_using_insecure_memory I put no-secmem-warning in my gpg.conf and I'm letting it run again, but I'm not wasting my time creating my own entropy. If it takes 6 hours, so be it.