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| author | Ahmad Fatoum <ahmad@a3f.at> | 2017-06-04 12:32:13 +0200 |
|---|---|---|
| committer | Peter Wu <peter@lekensteyn.nl> | 2017-06-05 16:10:58 +0000 |
| commit | 345046c83d780c6c32a729ce5945b869f27c37f5 (patch) | |
| tree | b69902b32bedae2e110d58ed28c3c7495dd4a10d /wsutil/xtea.h | |
| parent | 027aae1cd39f8cf9ce220fd20b94a9780d3b167e (diff) | |
| download | wireshark-345046c83d780c6c32a729ce5945b869f27c37f5.tar.gz | |
wsutil: Add XTEA block cipher
XTEA is a 64-bit block Feistel cipher with a 128-bit key and a suggested
64 rounds. It's used by the MMORPG Tibia for encrypting game server traffic.
Usual XTEA treats the blocks as big-endian. Tibia treats them as little
endian, therefore both versions are provided.
Change-Id: I9ad0c8e066f848b20772ce4e1d3df19deff307b8
Reviewed-on: https://code.wireshark.org/review/21942
Petri-Dish: Michael Mann <mmann78@netscape.net>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Reviewed-by: Peter Wu <peter@lekensteyn.nl>
Diffstat (limited to 'wsutil/xtea.h')
| -rw-r--r-- | wsutil/xtea.h | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/wsutil/xtea.h b/wsutil/xtea.h new file mode 100644 index 0000000000..6a9160222d --- /dev/null +++ b/wsutil/xtea.h @@ -0,0 +1,39 @@ +/* xtea.h + * Implementation of XTEA cipher + * By Ahmad Fatoum <ahmad[AT]a3f.at> + * Copyright 2017 Ahmad Fatoum + * + * Wireshark - Network traffic analyzer + * By Gerald Combs <gerald@wireshark.org> + * Copyright 1998 Gerald Combs + * + * This program 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 to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * + */ + +#ifndef __XTEA_H__ +#define __XTEA_H__ + +/* Actual XTEA is big-endian, nevertheless there exist protocols that treat every block + * as little endian, so we provide both + */ +#include "ws_symbol_export.h" +#include <glib.h> + +WS_DLL_PUBLIC void decrypt_xtea_ecb(guint8 plaintext[8], const guint8 ciphertext[8], const guint32 key[4], guint num_rounds); + +WS_DLL_PUBLIC void decrypt_xtea_le_ecb(guint8 plaintext[8], const guint8 ciphertext[8], const guint32 key[4], guint num_rounds); + +#endif /* __XTEA_H__ */ |