pam-cryptsetup provides a PAM module that allows LUKS-based disk encryption
passwords to be kept in sync with account passwords automatically based on
factors like if the user has decrypted the disk successfully previously.
The project as a whole consists of two parts: a PAM module pam_cryptsetup.so for
triggering on user authentication, and a helper program pam_cryptsetup_helper to
perform the actual encryption checks and modifications required.
