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/* packet-zbee-security.h
* Dissector helper routines for encrypted ZigBee frames.
* By Owen Kirby <osk@exegin.com>
* Copyright 2009 Exegin Technologies Limited
*
* 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 PACKET_ZBEE_SECURITY_H
#define PACKET_ZBEE_SECURITY_H
/* Structure containing the fields stored in the Aux Header */
typedef struct{
/* The fields of the Aux Header */
guint8 control; /* needed to decrypt */
guint32 counter; /* needed to decrypt */
guint64 src64; /* needed to decrypt */
guint8 key_seqno;
guint8 level;
guint8 key_id; /* needed to decrypt */
gboolean nonce;
} zbee_security_packet;
/* Bit masks for the Security Control Field. */
#define ZBEE_SEC_CONTROL_LEVEL 0x07
#define ZBEE_SEC_CONTROL_KEY 0x18
#define ZBEE_SEC_CONTROL_NONCE 0x20
/* ZigBee security levels. */
#define ZBEE_SEC_NONE 0x00
#define ZBEE_SEC_MIC32 0x01
#define ZBEE_SEC_MIC64 0x02
#define ZBEE_SEC_MIC128 0x03
#define ZBEE_SEC_ENC 0x04
#define ZBEE_SEC_ENC_MIC32 0x05
#define ZBEE_SEC_ENC_MIC64 0x06
#define ZBEE_SEC_ENC_MIC128 0x07
/* ZigBee Key Types */
#define ZBEE_SEC_KEY_LINK 0x00
#define ZBEE_SEC_KEY_NWK 0x01
#define ZBEE_SEC_KEY_TRANSPORT 0x02
#define ZBEE_SEC_KEY_LOAD 0x03
/* ZigBee Security Constants. */
#define ZBEE_SEC_CONST_L 2
#define ZBEE_SEC_CONST_NONCE_LEN (ZBEE_SEC_CONST_BLOCKSIZE-ZBEE_SEC_CONST_L-1)
#define ZBEE_SEC_CONST_BLOCKSIZE 16
/* CCM* Flags */
#define ZBEE_SEC_CCM_FLAG_L 0x01 /* 3-bit encoding of (L-1). */
#define ZBEE_SEC_CCM_FLAG_M(m) ((((m-2)/2) & 0x7)<<3) /* 3-bit encoding of (M-2)/2 shifted 3 bits. */
#define ZBEE_SEC_CCM_FLAG_ADATA(l_a) ((l_a>0)?0x40:0x00) /* Adata flag. */
/* Program Constants */
#define ZBEE_SEC_PC_KEY 0
/* Init routine for the Security dissectors. */
extern void zbee_security_register (module_t *module, int proto);
/* Security Dissector Routine. */
extern tvbuff_t *dissect_zbee_secure(tvbuff_t *, packet_info *, proto_tree *, guint);
extern gboolean zbee_sec_ccm_decrypt(const gchar *, const gchar *, const gchar *, const gchar *, gchar *, guint, guint, guint);
#endif /* PACKET_ZBEE_SECURITY_H */
/*
* Editor modelines - http://www.wireshark.org/tools/modelines.html
*
* Local variables:
* c-basic-offset: 4
* tab-width: 8
* indent-tabs-mode: nil
* End:
*
* vi: set shiftwidth=4 tabstop=8 expandtab:
* :indentSize=4:tabSize=8:noTabs=true:
*/
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