By Ali Ismail Awad, Aboul-Ella Hassanien, Kensuke Baba
This publication constitutes the refereed lawsuits of the foreign convention on Advances in defense of data and conversation Networks, SecNet 2013, held in Cairo, Egypt, in September 2013. The 21 revised complete papers awarded have been conscientiously reviewed and chosen from sixty two submissions. The papers are geared up in topical sections on networking safety; facts and data safeguard; authentication and privateness; safeguard functions.
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In this example: a subgroup contains four nodes. CH multicast the intermediated blind keys to all members. So, each member deduces locally the final common subgroup key. The given parameters’ value for each node: g=2, p=13, r=3 then br=gr mod p=23 mod 13=8, r0=5 then br0=gr0 mod p=25 mod 13=6. Each Mi, iϵ[1,4], can calculate the KG as shown in table 2. Fig. 6. Key’s tree structure to generate group key (KG) with 4 members Table 3. Deduceing the common key when member join Inside M1: r1 = 4, br1 = gr1 mod p = 24 mod 13= 3, k1 = (br1)r mod p= 33 mod 13 =1, bk1 = gk1 = 21 =2 k1 = (br)r1 mod p = (8)4 mod 13 = 1 k2 = (br2)k1 mod p = (6)1 mod 13 = 6 k3 =(br3)k2 mod p=(11)6 mod 13= 12 k4 =(br4)k3 mod p =(12)12 mod 13= 1 k5 = (br5)k4 mod P = (3)1 mod 13 = 3 KG = (br0)k5 mod p= 63 mod 13 = 8 Inside M2: r2 = 5, br2 = gr2 mod p = 25 mod 13= 6, k2 = (br2)k1 mod p= 61 mod 13 =6, bk2 = gk2 = 26 =64 k2 =(bk1)r2 mod p = (2)5 mod 13 = 6 k3 =(br3)k2 mod p= (11)6 mod 13= 12 k4 = (br4)k3 mod p =(12)12 mod 13= 1 k5 = (br5)k4 mod P = (3)1 mod 13 = 3 KG = (br0)k5 mod p= 63 mod 13 = 8 Inside M3: r3 = 7, br3 = gr3 mod p = 27 mod 13= 11, k3 = (br3)k2 mod p=116 mod 13 =12, bk3=gk3=212=4096 k3 = (bk2)r3 mod P = (64)7 mod 13 = 12 k4 = (br4)k3 mod P = (12)12 mod 13 = 1 k5 = (br5)k4 mod P = (3)1 mod 13 = 3 KG = (br0)k5 mod p= 63 mod 13 = 8 Inside M4: r4 = 6, br4 = gr4 mod p = 26 mod 13= 12, k4 = (br4)k3 mod p= 1212 mod 13 =1, bk4 = gk4 = 21 =2 k4 =(bk3)r4 mod P= (4096)6 mod 13= 1 k5 = (br5)k4 mod P = (3)1 mod 13 = 3 KG = (br0)k5 mod p= 63 mod 13 = 8 Inside M5: (new Member) r5 = 4, br5 = gr5 mod p = 24 mod 13= 3, k5 = (br5)k4 mod p= 31 mod 13 =3, bk4 = gk4 = 21 =2 k5 = (bk4)r5 mod P = (2)4 mod 13 = 3 KG =(br0)k5 mod p= 63 mod 13 = 8 Clustering Based Group Key Management for MANET 21 Initialization: CH announces its role and broadcasts two random keys (r, r0) and its brc, br, and br0.
1. Clustered WSNs provide a better performance, in terms of routing, scalability and energy eﬃciency. 32 A. Amer, A. A. El-Nasr 2. Only cluster heads are responsible for implementing the Chord keys lookup on behalf of other nodes (their cluster members) since they have a higher residual energy in order not to consume all nodes power and resources. 3. Cluster heads act as a distributed key storage and lookup facility, storing sensor nodes’ keys to avoid having a single point of failure, target to attacks and decreasing the communication overhead of contacting a centralized node or the base station.
G. Chord, CAN, Pastry, Tapestry, Freenet, Gnutella, Oceanstore, and Ohaha system, but Chord is distinguishable due to its simplicity, provable correctness and performance. Nodes joining the Chord ring create a table named ﬁnger table with routing information about a small portion of the network nodes , each n node maintains information about (n + 2i−1 ) nodes (all arithmetic is modulo 2m ), where 1≤i≤m, m is the maximum number of entries in the table, and the number of bits in the hashed IDs.
Advances in Security of Information and Communication Networks: First International Conference, SecNet 2013 Cairo, Egypt, September 2013 Proceedings by Ali Ismail Awad, Aboul-Ella Hassanien, Kensuke Baba