+/*
+ * cryptsetup - setup cryptographic volumes for dm-crypt
+ *
+ * Copyright (C) 2004, Christophe Saout <christophe@saout.de>
+ * Copyright (C) 2004-2007, Clemens Fruhwirth <clemens@endorphin.org>
+ * Copyright (C) 2009-2011, Red Hat, Inc. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
static int action_luksAddKey(int arg);
static int action_luksKillSlot(int arg);
static int action_luksRemoveKey(int arg);
+static int action_luksChangeKey(int arg);
static int action_isLuks(int arg);
static int action_luksUUID(int arg);
static int action_luksDump(int arg);
{ "luksOpen", action_luksOpen, 0, 2, 1, N_("<device> <name> "), N_("open LUKS device as mapping <name>") },
{ "luksAddKey", action_luksAddKey, 0, 1, 1, N_("<device> [<new key file>]"), N_("add key to LUKS device") },
{ "luksRemoveKey",action_luksRemoveKey, 0, 1, 1, N_("<device> [<key file>]"), N_("removes supplied key or key file from LUKS device") },
+ { "luksChangeKey",action_luksChangeKey, 0, 1, 1, N_("<device> [<key file>]"), N_("changes supplied key or key file of LUKS device") },
{ "luksKillSlot", action_luksKillSlot, 0, 2, 1, N_("<device> <key slot>"), N_("wipes key with number <key slot> from LUKS device") },
{ "luksUUID", action_luksUUID, 0, 1, 0, N_("<device>"), N_("print UUID of LUKS device") },
{ "isLuks", action_isLuks, 0, 1, 0, N_("<device>"), N_("tests <device> for LUKS partition header") },
.hash = opt_hash ?: NULL, // FIXME
.offset = opt_offset,
};
- unsigned int key_size = (opt_key_size ?: 128) / 8;
+ unsigned int key_size = (opt_key_size ?: DEFAULT_LOOPAES_KEYBITS) / 8;
int r;
if (!opt_key_file) {
return -EINVAL;
}
- if ((r = crypt_init(&cd, action_argv[1])))
+ if ((r = crypt_init(&cd, action_argv[0])))
goto out;
- r = crypt_format(cd, CRYPT_LOOPAES, NULL, NULL, NULL, NULL,
- key_size, ¶ms);
+ r = crypt_format(cd, CRYPT_LOOPAES, opt_cipher ?: DEFAULT_LOOPAES_CIPHER,
+ NULL, NULL, NULL, key_size, ¶ms);
if (r < 0)
goto out;
- r = crypt_activate_by_keyfile(cd, action_argv[0],
+ r = crypt_activate_by_keyfile(cd, action_argv[1],
CRYPT_ANY_SLOT, opt_key_file, 0,
opt_readonly ? CRYPT_ACTIVATE_READONLY : 0);
out:
crypt_status_info ci;
struct crypt_active_device cad;
struct crypt_device *cd = NULL;
+ char *backing_file;
+ const char *device;
int r = 0;
ci = crypt_status(NULL, action_argv[0]);
log_std(" cipher: %s-%s\n", crypt_get_cipher(cd), crypt_get_cipher_mode(cd));
log_std(" keysize: %d bits\n", crypt_get_volume_key_size(cd) * 8);
- log_std(" device: %s\n", crypt_get_device_name(cd));
+ device = crypt_get_device_name(cd);
+ log_std(" device: %s\n", device);
+ if (crypt_loop_device(device)) {
+ backing_file = crypt_loop_backing_file(device);
+ log_std(" loop: %s\n", backing_file);
+ free(backing_file);
+ }
log_std(" offset: %" PRIu64 " sectors\n", cad.offset);
log_std(" size: %" PRIu64 " sectors\n", cad.size);
if (cad.iv_offset)
crypt_set_iterarion_time(cd, opt_iteration_time);
if (opt_master_key_file) {
- if (_read_mk(opt_master_key_file, &key, keysize) < 0)
+ r = _read_mk(opt_master_key_file, &key, keysize);
+ if (r < 0)
goto out;
-
+ //FIXME: process keyfile arg
r = crypt_keyslot_add_by_volume_key(cd, opt_key_slot,
key, keysize, NULL, 0);
} else if (opt_key_file || opt_new_key_file) {
return r;
}
+static int _slots_full(struct crypt_device *cd)
+{
+ int i;
+
+ for (i = 0; i < crypt_keyslot_max(crypt_get_type(cd)); i++)
+ if (crypt_keyslot_status(cd, i) == CRYPT_SLOT_INACTIVE)
+ return 0;
+ return 1;
+}
+
+static int action_luksChangeKey(int arg)
+{
+ const char *opt_new_key_file = (action_argc > 1 ? action_argv[1] : NULL);
+ struct crypt_device *cd = NULL;
+ char *vk = NULL, *password = NULL;
+ unsigned int passwordLen = 0;
+ size_t vk_size;
+ int new_key_slot, old_key_slot, r;
+
+ if ((r = crypt_init(&cd, action_argv[0])))
+ goto out;
+
+ if ((r = crypt_load(cd, CRYPT_LUKS1, NULL)))
+ goto out;
+
+ if (opt_iteration_time)
+ crypt_set_iterarion_time(cd, opt_iteration_time);
+
+ r = crypt_get_key(_("Enter LUKS passphrase to be changed: "),
+ &password, &passwordLen,
+ opt_keyfile_size, opt_key_file, opt_timeout,
+ opt_batch_mode ? 0 : opt_verify_passphrase, cd);
+ if (r < 0)
+ goto out;
+
+ vk_size = crypt_get_volume_key_size(cd);
+ vk = crypt_safe_alloc(vk_size);
+ if (!vk) {
+ r = -ENOMEM;
+ goto out;
+ }
+
+ r = crypt_volume_key_get(cd, opt_key_slot, vk, &vk_size,
+ password, passwordLen);
+ if (r < 0) {
+ if (opt_key_slot != CRYPT_ANY_SLOT)
+ log_err(_("No key available with this passphrase.\n"));
+ goto out;
+ }
+
+ if (opt_key_slot != CRYPT_ANY_SLOT || _slots_full(cd)) {
+ log_dbg("Key slot %d is going to be overwritten (%s).",
+ r, opt_key_slot != CRYPT_ANY_SLOT ?
+ "explicit key slot specified" : "no free key slot");
+ old_key_slot = r;
+ new_key_slot = r;
+ } else {
+ log_dbg("Allocating new key slot.");
+ old_key_slot = r;
+ new_key_slot = CRYPT_ANY_SLOT;
+ }
+
+ crypt_safe_free(password);
+ password = NULL;
+ passwordLen = 0;
+ r = crypt_get_key(_("Enter new LUKS passphrase: "),
+ &password, &passwordLen,
+ opt_new_keyfile_size, opt_new_key_file,
+ opt_timeout, opt_batch_mode ? 0 : 1, cd);
+ if (r < 0)
+ goto out;
+
+ if (new_key_slot == old_key_slot) {
+ (void)crypt_keyslot_destroy(cd, old_key_slot);
+ r = crypt_keyslot_add_by_volume_key(cd, new_key_slot,
+ vk, vk_size,
+ password, passwordLen);
+ if (r >= 0)
+ log_verbose(_("Key slot %d changed.\n"), r);
+ } else {
+ r = crypt_keyslot_add_by_volume_key(cd, CRYPT_ANY_SLOT,
+ vk, vk_size,
+ password, passwordLen);
+ if (r >= 0) {
+ log_verbose(_("Replaced with key slot %d.\n"), r);
+ r = crypt_keyslot_destroy(cd, old_key_slot);
+ }
+ }
+ if (r < 0)
+ log_err(_("Failed to swap new key slot.\n"));
+out:
+ crypt_safe_free(vk);
+ crypt_safe_free(password);
+ crypt_free(cd);
+ return r;
+}
+
static int action_isLuks(int arg)
{
struct crypt_device *cd = NULL;
crypt_get_dir());
log_std(_("\nDefault compiled-in device cipher parameters:\n"
+ "\tloop-AES: %s, Key %d bits\n"
"\tplain: %s, Key: %d bits, Password hashing: %s\n"
"\tLUKS1: %s, Key: %d bits, LUKS header hashing: %s, RNG: %s\n"),
+ DEFAULT_LOOPAES_CIPHER, DEFAULT_LOOPAES_KEYBITS,
DEFAULT_CIPHER(PLAIN), DEFAULT_PLAIN_KEYBITS, DEFAULT_PLAIN_HASH,
DEFAULT_CIPHER(LUKS1), DEFAULT_LUKS1_KEYBITS, DEFAULT_LUKS1_HASH,
DEFAULT_RNG);
projects / platform / upstream / cryptsetup.git / blobdiff