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1 A peer mutual authentication method on super peer based peer-to- peer network Authors: Byeong-Thaek Oh, Sang-Bong Lee, and Ho-Jin Park Source: IEEE International.

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Presentation on theme: "1 A peer mutual authentication method on super peer based peer-to- peer network Authors: Byeong-Thaek Oh, Sang-Bong Lee, and Ho-Jin Park Source: IEEE International."— Presentation transcript:

1 1 A peer mutual authentication method on super peer based peer-to- peer network Authors: Byeong-Thaek Oh, Sang-Bong Lee, and Ho-Jin Park Source: IEEE International Symposium on Consumer Electronics, pp. 1-4, 2008 Speaker: Shu-Fen Chiou ( 邱淑芬 )

2 2 Introduction Super peer P2P network Advantages: Reduce time and bandwidth for search Autonomous units Manageability Load balancing

3 3 Motivation Exchange information Security issues: Copyright protect Anonymous malicious attack => Guarantee mutual Authentication

4 4 Peer authentication Peer A-> Super Peer A: UID A ||PID A ||TS 2 ||PKC||Sign Sign=E_K PA [UID A ||TS 1 ]

5 5 Peer mutual authentication Super Peer A-> AS: UID A ||PID A ||PID B ||SID B ||TS 3 Ticket B1 =E_K B [K A,B ||UID A ||PID A ||SID B ||TS 4 ||TID 1 ||lifetime 1 ] AS->Super Peer A:E_K A [K A,B ||SID B ||TS 4 ||lifetime 1 ||Ticket B1 ] Peer A->Peer B: Ticket B1, Authenticator A Authenticator A =E_K A,B [UID A ||PID A ||SID B ||TS 5 ] Peer B-> Peer A: Ticket B2 Ticket B2 =E_K B [K A,B ||UID A ||PID A ||SID B ||TS 6 ||TID 2 ||lifetime 2 ]

6 6 Comments Peer A-> Super Peer A: UID A ||PID A ||TS 2 ||PKC||Sign Sign=E_K PA [UID A ||TS 1 ] Peer A-> Super Peer A: PID A ||TS 2 ||PKC||Sign Sign=E_K PA [PID A ||TS 1 ]

7 7 Comments Super Peer A-> AS: UID A ||PID A ||PID B ||SID B ||TS 3 Ticket B1 =E_K B [K A,B ||UID A ||PID A ||SID B ||TS 4 ||TID 1 ||lifetime 1 ] AS->Super Peer A:E_K A [K A,B ||SID B ||TS 4 ||lifetime 1 ||Ticket B1 ] Peer A->Peer B: Ticket B1, Authenticator A Authenticator A =E_K A,B [UID A ||PID A ||SID B ||TS 5 ] Peer B-> Peer A: Ticket B2 Ticket B2 =E_K B [K A,B ||UID A ||PID A ||SID B ||TS 6 ||TID 2 ||lifetime 2 ]


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