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From Owen Kirby: 

Packet decryption for IEEE 802.15.4.
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=4457

svn path=/trunk/; revision=31820
This commit is contained in:
Anders Broman 2010-02-07 19:39:31 +00:00
parent 2a9a424cf5
commit 95e212e6c7
2 changed files with 1111 additions and 712 deletions
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1742
epan/dissectors/packet-ieee802154.c
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81
epan/dissectors/packet-ieee802154.h
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@ -62,36 +62,37 @@
#define IEEE802154_CMD_GTS_REQ_TYPE 0x20
/* Bit masks & shifts for various beacon fields */
#define IEEE802154_BCN_BO_MASK 0x0F
#define IEEE802154_BCN_SFO_MASK 0xF0
#define IEEE802154_BCN_CAP_MASK 0x0F
#define IEEE802154_BCN_BATT_EXTN_MASK 0x10
#define IEEE802154_BCN_COORD_MASK 0x40
#define IEEE802154_BCN_ASSOC_PERM_MASK 0x80
#define IEEE802154_BCN_SFO_SHIFT 4
#define IEEE802154_BEACON_ORDER_MASK 0x000F
#define IEEE802154_SUPERFRAME_ORDER_MASK 0x00F0
#define IEEE802154_SUPERFRAME_CAP_MASK 0x0F00
#define IEEE802154_BATT_EXTENSION_MASK 0x1000
#define IEEE802154_SUPERFRAME_COORD_MASK 0x4000
#define IEEE802154_ASSOC_PERMIT_MASK 0x8000
#define IEEE802154_SUPERFRAME_ORDER_SHIFT 4
#define IEEE802154_SUPERFRAME_CAP_SHIFT 8
#define IEEE802154_BCN_GTS_COUNT_MASK 0x03
#define IEEE802154_BCN_GTS_PERMIT_MASK 0x80
#define IEEE802154_BCN_GTS_DIRECTION_SLOT(i) (0x01<<(i))
#define IEEE802154_BCN_GTS_MAX_SLOTS 7
#define IEEE802154_BCN_GTS_DIRECTION_SLOT1 0x01
#define IEEE802154_BCN_GTS_DIRECTION_SLOT2 0x02
#define IEEE802154_BCN_GTS_DIRECTION_SLOT3 0x04
#define IEEE802154_BCN_GTS_DIRECTION_SLOT4 0x08
#define IEEE802154_BCN_GTS_DIRECTION_SLOT5 0x10
#define IEEE802154_BCN_GTS_DIRECTION_SLOT6 0x20
#define IEEE802154_BCN_GTS_DIRECTION_SLOT7 0x40
#define IEEE802154_BCN_GTS_SLOT_MASK 0x0F
#define IEEE802154_BCN_GTS_LENGTH_MASK 0xF0
#define IEEE802154_BCN_GTS_LENGTH_SHIFT 4
#define IEEE802154_GTS_COUNT_MASK 0x03
#define IEEE802154_GTS_PERMIT_MASK 0x80
#define IEEE802154_GTS_DIRECTION_SLOT(i) (0x01<<(i))
#define IEEE802154_GTS_MAX_SLOTS 7
#define IEEE802154_GTS_DIRECTION_SLOT1 0x01
#define IEEE802154_GTS_DIRECTION_SLOT2 0x02
#define IEEE802154_GTS_DIRECTION_SLOT3 0x04
#define IEEE802154_GTS_DIRECTION_SLOT4 0x08
#define IEEE802154_GTS_DIRECTION_SLOT5 0x10
#define IEEE802154_GTS_DIRECTION_SLOT6 0x20
#define IEEE802154_GTS_DIRECTION_SLOT7 0x40
#define IEEE802154_GTS_SLOT_MASK 0x0F
#define IEEE802154_GTS_LENGTH_MASK 0xF0
#define IEEE802154_GTS_LENGTH_SHIFT 4
#define IEEE802154_BCN_PADDR_SHORT_MASK 0x07
#define IEEE802154_BCN_PADDR_LONG_MASK 0x70
#define IEEE802154_BCN_PADDR_LONG_SHIFT 4
#define IEEE802154_PENDADDR_SHORT_MASK 0x07
#define IEEE802154_PENDADDR_LONG_MASK 0x70
#define IEEE802154_PENDADDR_LONG_SHIFT 4
#define IEEE802154_BCN_SFRM_DURATION (IEEE802154_BCN_SLOT_DURATION * IEEE802154_BCN_NUM_SLOTS)
#define IEEE802154_BCN_SLOT_DURATION 60
#define IEEE802154_BCN_NUM_SLOTS 16
#define IEEE802154_SUPERFRAME_DURATION (IEEE802154_BASE_SLOT_DURATION * IEEE802154_SUPERFRAME_SLOTS)
#define IEEE802154_BASE_SLOT_DURATION 60
#define IEEE802154_SUPERFRAME_SLOTS 16
/* Bit-masks for the FCF */
#define IEEE802154_FCF_TYPE_MASK 0x0007 /* Frame Type Mask */
@ -109,6 +110,10 @@
#define IEEE802154_FCF_ACK 0x0002 /* Acknowlegement Frame */
#define IEEE802154_FCF_CMD 0x0003 /* Command Frame */
/* Frame version definitions. */
#define IEEE802154_VERSION_2003 0x0
#define IEEE802154_VERSION_2006 0x1
/* Address Mode Definitions */
#define IEEE802154_FCF_ADDR_NONE 0x0000
#define IEEE802154_FCF_ADDR_SHORT 0x0002
@ -130,6 +135,7 @@
/* Auxiliary Security Header */
#define IEEE802154_AUX_SEC_LEVEL_MASK 0x07 /* Security Level */
#define IEEE802154_AUX_KEY_ID_MODE_MASK 0x18 /* Key Identifier Mode */
#define IEEE802154_AUX_KEY_ID_MODE_SHIFT 3
#define IEEE802154_AUX_KEY_RESERVED_MASK 0xE0 /* Reserved */
typedef enum {
@ -150,6 +156,14 @@ typedef enum {
KEY_ID_MODE_KEY_EXPLICIT_8 = 0x03
} ieee802154_key_id_mode;
/* IEEE 802.15.4 cipher block size. */
#define IEEE802154_CIPHER_SIZE 16
/* Macro to compute the MIC length. */
#define IEEE802154_MIC_LENGTH(_level_) ((0x2 << ((_level_) & 0x3)) & ~0x3)
/* Macro to check for payload encryption. */
#define IEEE802154_IS_ENCRYPTED(_level_) ((_level_) & 0x4)
/* Structure containing information regarding all necessary packet feilds. */
typedef struct {
/* Frame control field. */
@ -175,6 +189,19 @@ typedef struct {
guint16 addr16;
guint64 addr64;
} src;
/* Security Info. */
ieee802154_security_level security_level;
ieee802154_key_id_mode key_id_mode;
guint32 frame_counter;
union {
guint32 addr32;
guint64 addr64;
} key_source;
guint8 key_index;
/* Command ID (only if frame_type == 0x3) */
guint8 command_id;
} ieee802154_packet;