GPG uses mlock() to prevent swapping, and warns if it cannot do this: http://www.gnupg.org/faq/GnuPG-FAQ.html#why-do-i-get-gpg_warning_using_insecure_memory htt

GPG uses mlock() to prevent swapping, and warns if it cannot do this: http://www.gnupg.org/faq/GnuPG-FAQ.html#why-do-i-get-gpg_warning_using_insecure_memory http://www.gnupg.org/faq/GnuPG-FAQ.html#why-do-i-get-gpg_war...