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Support for ecryptfs in authconfig
Summary
Authconfig will allow the system administrator to configure automatic mounting of an encrypted area in each user's home directory.
Owner
- Name: Paolo Bonzini
- Email: pbonzini@redhat.com
Current status
- Targeted release: Fedora 15
- Last updated: 2010-12-22
- Percentage of completion: 30%
Detailed Description
pam_ecryptfs is a PAM module that allows to mount a private part of the home directory (or the entire home directory) when a user logs in. However, using pam_ecryptfs in Fedora <=14 is complicated by the configuration style adopted by authconfig. This feature aims at simplifying this across various PAM users and integrating ecryptfs support into authconfig.
Benefit to Fedora
ecryptfs is a useful tool, but it is hard to configure under Fedora. Compared to encrypted partitions, for example, it easily lets the user do encrypted backups.
Scope
Changes are required to PAM, authconfig, and several pam users. All of these have been identified.
How To Test
- Set up an ecryptfs private area under ~/Private using ecryptfs-setup-private.
- Enable ecryptfs using authconfig (e.g. setting USE_ECRYPTFS=yes under /etc/sysconfig/authconfig and rerunning authconfig-tui --updateall)
- Log out and log back in.
- mount should show an ecryptfs mount for ~/Private.
Contingency Plan
The feature touches several independent packages, but all patches have precise dependencies included in their bugzilla entries (see here). In case the feature will not be available for F15, it is possible to either revert changes that were already included, or leave them in. In the latter case the changes will be unnecessary, but will not break anything.
Documentation
- pam_ecryptfs(8) man page (note the man page is a bit Ubuntu-centric, we do not have /etc/pam.d/common-auth and the Fedora implementation will be different in order to support authconfig)
Release Notes
Fedora 15 brings in improved support for eCryptfs, a stacked cryptographic filesystem for Linux. Starting from Fedora 15, authconfig can be used to automatically mount a private encrypted part of the home directory when a user logs in.