taglinefilesource code
lo_encrypt_key71drivers/block/loop.ckey = lo->lo_encrypt_key;
lo_encrypt_key299drivers/block/loop.cmemset(lo->lo_encrypt_key, 0, LO_KEY_SIZE);
lo_encrypt_key333drivers/block/loop.cdes_set_key((des_cblock *) lo->lo_encrypt_key,
lo_encrypt_key347drivers/block/loop.cmemcpy(lo->lo_encrypt_key, info.lo_encrypt_key,
lo_encrypt_key376drivers/block/loop.cmemcpy(info.lo_encrypt_key, lo->lo_encrypt_key,
lo_encrypt_key30include/linux/loop.hchar    lo_encrypt_key[LO_KEY_SIZE];
lo_encrypt_key58include/linux/loop.hunsigned char  lo_encrypt_key[LO_KEY_SIZE]; /* ioctl w/o */