# Directions for creating the encrypted key that will be used to mount an # eCryptfs filesystem # Create the eCryptfs key (encrypted key type) # # The encrypted key type supports two formats: the 'default' format allows # to generate a random symmetric key of the length specified, the 'ecryptfs' # format generates an authentication token for the eCryptfs filesystem, # which contains a randomly generated key. Two requirements for the latter # format is that the key description must contain exactly 16 hexadecimal # characters and that the encrypted key length must be equal to 64. $ keyctl add encrypted 1000100010001000 "new ecryptfs trusted:kmk-trusted 64" @u 782117972 # Save the encrypted key $ su -c 'keyctl pipe `keyctl search @u encrypted 1000100010001000` > /etc/keys/ecryptfs-trusted.blob' # The eCryptfs key path name can be set in one of the following ways (specified in # the order in which the variable is overwritten): 1) use the default value: -------------------------------------------------------------------------- ECRYPTFSKEY="/etc/keys/ecryptfs-trusted.blob" -------------------------------------------------------------------------- 2) create the configuration file '/etc/sysconfig/ecryptfs' and set the ECRYPTFSKEY variable; 3) specify the eCryptfs key path name in the 'ecryptfskey=' parameter of the kernel command line. # The configuration file '/etc/sysconfig/ecryptfs' is also used to specify # more options for mounting the eCryptfs filesystem: ECRYPTFSSRCDIR: existent directory in the lower root filesystem; ECRYPTFSDSTDIR: mount point directory for the eCryptfs filesystem (the directory must be created in the root filesystem before rebooting the platform); ECRYPTFS_EXTRA_MOUNT_OPTS: extra mount options for the eCryptfs filesystem (the 'ecryptfs_sig' option is automatically added by the dracut script). # Example of the configuration file: ----------- '/etc/sysconfig/ecryptfs' (with default values) ----------- ECRYPTFS_KEY="/etc/keys/ecryptfs-trusted.blob" ECRYPTFSSRCDIR="/secret" ECRYPTFSDSTDIR="${ECRYPTFSSRCDIR}" ECRYPTFS_EXTRA_MOUNT_OPTS="" ----------------------------------------------------------------------- # If the variable ECRYPTFSDSTDIR is not specified in the configuration file, # its value will be equal to that of ECRYPTFSSRCDIR. SIMPAN PERUBAHAN