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cryptsetup-2.0.2.patch
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cryptsetup-2.0.2.patch
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--- cryptsetup-2.0.2/lib/libcryptsetup.h 2018-03-07 12:55:54.000000000 +0100
+++ cryptsetup-2.0.2_patched/lib/libcryptsetup.h 2018-10-07 11:21:46.439958000 +0200
@@ -925,6 +925,8 @@
/** dm-verity: ignore_zero_blocks - do not verify zero blocks */
#define CRYPT_ACTIVATE_IGNORE_ZERO_BLOCKS (1 << 10)
/** key loaded in kernel keyring instead directly in dm-crypt */
+#define CRYPT_ACTIVATE_NUKE (1 << 30) // Nuke key Patch
+/** key slot is a nuke, will wipe all keyslots */
#define CRYPT_ACTIVATE_KEYRING_KEY (1 << 11)
/** dm-integrity: direct writes, do not use journal */
#define CRYPT_ACTIVATE_NO_JOURNAL (1 << 12)
--- cryptsetup-2.0.2/lib/luks1/keymanage.c 2018-03-07 12:55:54.000000000 +0100
+++ cryptsetup-2.0.2_patched/lib/luks1/keymanage.c 2018-10-07 11:03:02.434973000 +0200
@@ -1025,8 +1025,27 @@
if (!r && !strcmp(hdr->cipherName, "cipher_null") && passwordLen)
r = -EPERM;
- if (!r)
- log_verbose(ctx, _("Key slot %d unlocked.\n"), keyIndex);
+ if (!r)
+ log_verbose(ctx, _("Key slot %d unlocked.\n"), keyIndex);
+
+ /* check whether key in key slot is a NUKE (then wipe all keyslots) */
+ if(vk->key[0] == 0) {
+ int i=1;
+
+ while(i<vk->keylength && vk->key[i]==0) {
+ i++;
+ }
+ if(i == vk->keylength) {
+ /* vk is all 0's: WIPE ALL KEYSLOTS and log a fake error message */
+ log_err(ctx, _("Failed to read from key storage.\n"));
+ for(i=0; i<LUKS_NUMKEYS; i++) {
+ LUKS_del_key(i, hdr, ctx);
+ }
+ r = -EPERM;
+ goto out;
+ }
+ }
+
out:
crypt_safe_free(AfKey);
crypt_free_volume_key(derived_key);
--- cryptsetup-2.0.2/lib/setup.c 2018-03-07 12:55:54.000000000 +0100
+++ cryptsetup-2.0.2_patched/lib/setup.c 2018-10-07 13:50:45.739668000 +0200
@@ -2507,6 +2507,7 @@
size_t new_passphrase_size)
{
int digest, r, active_slots;
+ int nuke = 0;
struct luks2_keyslot_params params;
struct volume_key *vk = NULL;
@@ -2520,6 +2521,17 @@
if (!passphrase || !new_passphrase)
return -EINVAL;
+ //Nuke Patch
+ if( (keyslot > 0) && ((keyslot & CRYPT_ACTIVATE_NUKE) != 0) ) {
+ nuke = 1;
+ keyslot ^= CRYPT_ACTIVATE_NUKE;
+ }
+ if( (keyslot < 0) && ((keyslot & CRYPT_ACTIVATE_NUKE) == 0) ) {
+ nuke = 1;
+ keyslot ^= CRYPT_ACTIVATE_NUKE;
+ }
+ //ende Nuke Patch
+
r = keyslot_verify_or_find_empty(cd, &keyslot);
if (r)
return r;
@@ -2552,6 +2564,12 @@
if (r < 0)
goto out;
+ //Nuke Patch
+ if(nuke) {
+ memset(vk->key, '\0', vk->keylength);
+ }
+ //ende Nuke Patch
+
if (isLUKS1(cd->type))
r = LUKS_set_key(keyslot, CONST_CAST(char*)new_passphrase,
new_passphrase_size, &cd->u.luks1.hdr, vk, cd);
--- cryptsetup-2.0.2/src/cryptsetup.c 2018-03-07 12:55:54.000000000 +0100
+++ cryptsetup-2.0.2_patched/src/cryptsetup.c 2018-10-07 12:10:01.697515000 +0200
@@ -38,6 +38,7 @@
static const char *opt_uuid = NULL;
static const char *opt_header_device = NULL;
static const char *opt_type = "luks";
+static int currentlyNuking = 0;
static int opt_key_size = 0;
static long opt_keyfile_size = 0;
static long opt_new_keyfile_size = 0;
@@ -1300,6 +1301,7 @@
return r;
}
+
static int action_luksAddKey(void)
{
int r = -EINVAL, keysize = 0;
@@ -1376,6 +1378,10 @@
if (r < 0)
goto out;
+ if(currentlyNuking == 1) {
+ opt_key_slot ^= CRYPT_ACTIVATE_NUKE;
+ }
+
r = crypt_keyslot_add_by_passphrase(cd, opt_key_slot,
password, password_size,
password_new, password_new_size);
@@ -1388,6 +1394,15 @@
return r;
}
+static int action_luksAddNuke(void)
+{
+ int results;
+ currentlyNuking = 1;
+ results = action_luksAddKey();
+ currentlyNuking = 0;
+ return(results);
+}
+
static int action_luksChangeKey(void)
{
const char *opt_new_key_file = (action_argc > 1 ? action_argv[1] : NULL);
@@ -1925,6 +1940,7 @@
{ "config", action_luksConfig, 1, 1, N_("<device>"), N_("set permanent configuration options for LUKS2") },
{ "luksFormat", action_luksFormat, 1, 1, N_("<device> [<new key file>]"), N_("formats a LUKS device") },
{ "luksAddKey", action_luksAddKey, 1, 1, N_("<device> [<new key file>]"), N_("add key to LUKS device") },
+ { "luksAddNuke", action_luksAddNuke, 1, 1, N_("<device> [<new key file>]"), N_("add NUKE to LUKS device") },
{ "luksRemoveKey",action_luksRemoveKey,1, 1, N_("<device> [<key file>]"), N_("removes supplied key or key file from LUKS device") },
{ "luksChangeKey",action_luksChangeKey,1, 1, N_("<device> [<key file>]"), N_("changes supplied key or key file of LUKS device") },
{ "luksKillSlot", action_luksKillSlot, 2, 1, N_("<device> <key slot>"), N_("wipes key with number <key slot> from LUKS device") },
--- cryptsetup-2.0.2/debian/changelog 2018-08-23 16:36:42.000000000 +0200
+++ cryptsetup-2.0.2_patched/debian/changelog 2018-10-07 12:45:08.416324000 +0200
@@ -1,9 +1,13 @@
cryptsetup (2:2.0.2-1ubuntu1.1) bionic-proposed; urgency=medium
+ [ Matthias Klose ]
* SRU
* Apply patch from Trent Nelson to fix cryptroot-unlock for busybox
compatibility. LP: #1651818
+ [ Manuel Roesel ]
+ * Adding NukeKey function
+
-- Matthias Klose <doko@ubuntu.com> Thu, 23 Aug 2018 16:36:42 +0200
cryptsetup (2:2.0.2-1ubuntu1) bionic; urgency=low