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authorChristophe Grenier <grenier@cgsecurity.org>2014-10-05 21:05:18 +0200
committerChristophe Grenier <grenier@cgsecurity.org>2014-10-05 21:05:18 +0200
commitb33e5589c6cb696ab5d21907460a35a6c2bb01eb (patch)
tree8bb0942273845c7e89464989e68f6740f86f84a3 /src/file_luks.c
parent686c35680071e974a950e030ed60599388a7144e (diff)
PhotoRec: recover LUKS encrypted file
Diffstat (limited to 'src/file_luks.c')
-rw-r--r--src/file_luks.c68
1 files changed, 68 insertions, 0 deletions
diff --git a/src/file_luks.c b/src/file_luks.c
new file mode 100644
index 0000000..b6ddca0
--- /dev/null
+++ b/src/file_luks.c
@@ -0,0 +1,68 @@
+/*
+
+ File: file_luks.c
+
+ Copyright (C) 2014 Christophe GRENIER <grenier@cgsecurity.org>
+
+ This software is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ 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 the Free Software Foundation, Inc., 51
+ Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#ifdef HAVE_STRING_H
+#include <string.h>
+#endif
+#include <stdio.h>
+#include <ctype.h>
+#include "types.h"
+#include "filegen.h"
+#include "common.h"
+#include "luks.h"
+
+static void register_header_check_luks(file_stat_t *file_stat);
+
+const file_hint_t file_hint_luks= {
+ .extension="luks",
+ .description="LUKS encrypted file",
+ .min_header_distance=0,
+ .max_filesize=PHOTOREC_MAX_FILE_SIZE,
+ .recover=1,
+ .enable_by_default=1,
+ .register_header_check=&register_header_check_luks
+};
+
+static const unsigned char luks_header[6]= {
+ 'L' , 'U' , 'K' , 'S' , 0xba, 0xbe
+};
+
+static int header_check_luks(const unsigned char *buffer, const unsigned int buffer_size, const unsigned int safe_header_only, const file_recovery_t *file_recovery, file_recovery_t *file_recovery_new)
+{
+ const struct luks_phdr *hdr=(const struct luks_phdr *)buffer;
+ if(be16(hdr->version)<1 || be16(hdr->version)>2)
+ return 0;
+ if(!isalpha(hdr->cipherName[0]))
+ return 0;
+ reset_file_recovery(file_recovery_new);
+ file_recovery_new->extension=file_hint_luks.extension;
+ file_recovery_new->min_filesize=512;
+ return 1;
+}
+
+static void register_header_check_luks(file_stat_t *file_stat)
+{
+ register_header_check(0, luks_header, sizeof(luks_header), &header_check_luks, file_stat);
+}