Btrfs Authenticated File-System Support Looks To Be Revived

Last year a SUSE developer sent out a set of patches adding authentication support to the Btrfs file-system. Btrfs already has checksums on meta-data blocks and data blocks while the original implementation of these authentication patches was performing HMAC on a SHA256 checksum as a keyed hash. A proper key in turn is then needed to mount a verified file-system...