... công mạng Wireless LAN sử dụng bảo mật dạng WEP
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Các máy kết nối với nhau theo mô hình
Một máy có Wireless Card hỗ trợ Hack Wep (Bài Lab này chúng tôi sử dụng máy có
wireless Card ... Công Và Bảo Mt Mạng Wireless LAN ispace.edu.vn
DangNS iSPACE Lecturer – Network Security Group Trang 1
LAB TẤN CÔNG VÀ PHÒNG THỦ WIRELESS LAN
Access Point
Wireless Client
Wireless Client
Router ... Công Và Bảo Mt Mạng Wireless LAN ispace.edu.vn
DangNS iSPACE Lecturer – Network Security Group Trang 10
Hình 1.18
Hình 1.19
LINK DANH SÁCH CARD WIRELESS HỖ TRỢ HACK WIRELESS THAM KHẢO...
...
Secure Wireless Network Positioning and VLANs
Deploying a Linux-Based, Custom-Built Hardened Wireless Gateway
Proprietary Improvements to WEP and WEP Usage
802.11i Wireless Security ... guide to penetrating and defending wireless
networks.
Straight from the field, this is the definitive guide to
hacking wireless networks. Authored by world-renowned
wireless security auditors, this ... freely downloaded from Intersil's Web site. Wireless
security software developers would probably be most interested in studying the
Prism MAC controller, which communicates with the software...
... a
time, to allow users to jailbreak their mobile devices, allowing third-party software
to run on them. The downloaded software also fixed the vulnerability months
before Apple did so that more malicious ... can be opened with the right key. Your valuables
might be safe in the strongest, most fortified bank in the world, but if the key is sitting
on the bar with your car keys, it only takes a simple ... where each file now has its own encryption key. Making a
file unrecoverable is as easy as destroying the key. Unfortunately for developers, traces
of these keys can still be recovered, allowing the...
...
Protocol
EAP authentication cung cấp key động cho các
Client. Key động thì bảo mật hơn nhiều so với key
tĩnh.
Phương pháp chứng thực này cần kết hợp với
một RADIUS server.
WEP
IV (Initialization Vector) ... class="bi x0 y0 w0 h0" alt=""
Các tính năng của WEP
WEP sử dụng thủ công để tạo ra một khóa giống
nhau ở các client và ở các Access point.
WEP đưa ra 3 mức an toàn : Mức OFF ( no
security) ... và khóa
WEP kết quả là cùng một chuỗi khóa được sử dụng để
mã hóa frame. Hacker có thể bắt giữ đủ 1 số lượng
packet nào đó thì hoàn toàn có thể phân tích các IV
này để đoán ra khoá -key mà nạn...
... and Rekeying. Once the tree is con-
structed, each node shares a symmetric key with the base
station, a symmetric key with its father in the tree, and
the key K
r
with the whole network. A rekeying ... 16]
Dynamic key
management [17]
Hierarchical key
management [12]
Location based
keys [13]
Figure 2: Existing key management solutions for WSNs.
additional memory space to store authentication keys. ... group key is a key common to the entire network. The
individual key is preloaded. After deployment, neighboring
nodes establish pairwise keys. They authenticate themselves
using a predeployed key...
... k
i+1
| m into extracted key and m
(9) hash extracted
key m + 1 times and store in trial key
(10) if trial
key matches current key
(11) replace current
key with extracted key
(12) else discard packet ... on Wireless Communications and Networking 7
// current key denotes the node’s last correct key
(1) decrypt data
field of P
i
using current key to obtain data and extracted key
(2) if extracted
key ... key component. The shared ephemeral
key is then generated by each side by combining the
received key component with its own key component. This
shared key allows secure transfer of the root key...
... use the node’s individual key, the
pairwise key, or the local cluster key to encrypt and
authenticate network messages. Therefore, adversaries who
do not know these keys cannot obtain, fake, ... cluster key of a node (i.e., the
SN
B
) reaches the preset value, the node will broadcast the
cluster key update message.
(i) Pairwise key update
If ID
S
< ID
R
Unicast: pairwise -key || ID
S
|| ... 1
]
)
,
(14)
where pairwise -key denotes the message type and K and K
are the old and the new pairwise keys, respectively.
(ii) Local cluster key update
Local Broadcast: cluster -key || ID
S
|| SN
B
||...
... link (fibre,
wireless)
Wireless mesh
access networ
k
Wireless clients
MANET and mesh
clients
Figure 1: Network model.
networks. Seamless interworking of both ty pes of networks
would be a key requirement ... Diffie-Hellman Key Exchange
5.2.1. Two Party Key Exchange. Diffie-Hellman is the first
public key distribution protocol that opened new directions
in cryptography [8]. In this important key distribution
protocol, ... authentication and key agreement
should add minimal computational overhead.
Rare Key Reestablishment. Session key refreshments should
be performed as rare as possible, since during every new key
reestablishment...
... private key P
r
n
i
and obtains the symmetric key
K
n
i
n
i
. Since this message should be encrypted by the public
key (based on ECC) of every individual sensor node, then
disclosing symmetric key ... symmetric keys by the gateways, sensor node n
i
can
send a key request message to the gateway G
j
accompanying
with a random nonce, i.e., N
n
i
and encr ypted by P
u
G
j
.
EURASIP Journal on Wireless ... K
n
10
n
13
} symmetric keys encrypted w ith P
u
n
10
.All
the sensor nodes in the network will get the secret key shared
with their neighborhood nodes similarly.
EURASIP Journal on Wireless Communications...
... an initial key or a root
key is secure, the derived key generated by them must be
secure, in other words, the derived key is compromised if
both the associated initial key and root key are insecure.
Therefore, ... initial
key pool and root key pool; then the auxiliary nodes and the
ordinary nodes are preloaded the key materials, respectively.
4.1.1. Generating Key Pool. The initial key pool consists of
L key ... these keys may come from the same key group,
(2) the associated IDCert of every picked initial key,
(3) a hash image of the root key H(R
i
) if there is at least
one initial key of ith key group...