E4CRYPT(8) System Manager's Manual E4CRYPT(8) e4crypt - ext4 e4crypt add_key -S [ -k keyring ] [-v] [-q] [ -p pad ] [ path ... ] e4crypt new_session e4crypt get_policy path ... e4crypt set_policy [ -p pad ] policy path ... e4crypt ext4. e4crypt add_key [-vq] [-S salt ] [-k keyring ] [ -p pad ] [ path ... ] . e4crypt . . e4crypt ext4 . . salt "s:" . "0x" . "f:" . '/' . salt UUID UUID . keyring . pad . pad 4 8 16 32. e4crypt add_key. . . e4crypt get_policy path ... . e4crypt new_session ( ) . e4crypt set_policy [ -p pad ] policy path ... . e4crypt . 16 . Michael Halcrow Ildar Muslukhov Theodore Ts'o keyctl(1) mke2fs(8) mount(8). 3 . . : . E2fsprogs 1.47.4 2025 E4CRYPT(8)