• Theodore Ts'o's avatar
    ext4 crypto: add padding to filenames before encrypting · a44cd7a0
    Theodore Ts'o authored
    This obscures the length of the filenames, to decrease the amount of
    information leakage.  By default, we pad the filenames to the next 4
    byte boundaries.  This costs nothing, since the directory entries are
    aligned to 4 byte boundaries anyway.  Filenames can also be padded to
    8, 16, or 32 bytes, which will consume more directory space.
    
    Change-Id: Ibb7a0fb76d2c48e2061240a709358ff40b14f322
    Signed-off-by: Theodore Ts'o's avatarTheodore Ts'o <tytso@mit.edu>
    a44cd7a0
crypto_fname.c 18 KB