This presentation is about security protocol for sensor network..

1. Department of Computer Engineering
NAVSAHYADRI EDUCATION SOCIETY'S
GROUP OF INSTITUTES,
FACULTY OF ENGINEERING
Naigaon-412206, Tal. Bhor, Dist. Pune
2012-2013
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2. SPINS: Security Protocols for Sensor Networks
Submitted By
Abhijeet Vijay Awade
Guided By
Mr. A. M. Wade
Seminar Topic
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SPINS: Security Protocols for Sensor Networks

3.  Background
 Protocols
 SNEP
 μTESLA
 Example applications
 Conclusions
 Authenticated Routing
 Node-to-node key agreement
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SPINS: Security Protocols for Sensor Networks

4. Sensor Networks Overview
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SPINS: Security Protocols for Sensor Networks

5.  Sensor networks
 Nodes
 Base stations
 Communication channel
 Communication patterns
 Trust framework
 Resource restrictions
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SPINS: Security Protocols for Sensor Networks

6. SPINS: Security Protocols for Sensor Networks
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7.  Data Confidentiality
 Semantic security
 Data Authentication
 Point-to-point
 Broadcast
 Data Integrity
 Data Freshness
 Weak-Partial ordering.
 Strong-Total ordering.
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SPINS: Security Protocols for Sensor Networks

8.  Purpose: secure two-party communication
 Elements
 Symmetric key
 Message Authentication Code
 Block cipher in counter mode
• Shared counter
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SPINS: Security Protocols for Sensor Networks

9.  Key Setup
 Bootstrap secret master key
 Key generation(PRF)
 Encryption
 RC5
 Message Authentication Code
 CBC-MAC (one per packet)
 {M}KE, MAC(KMAC, {M}KE)
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SPINS: Security Protocols for Sensor Networks

10.  Purpose : authenticated broadcast
 Phases
 Sender setup
 Broadcasting
 Bootstrapping receivers
 Receiving broadcast packets
 Authenticating broadcast packets
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SPINS: Security Protocols for Sensor Networks

11.  Key chain generation
 Randomly pick last key Kn
 Repeatedly apply one-way function F
Fn(Kn) <- ... <- F(F(F(Kn)) <- F(F(Kn) <- F(Kn) <- Kn
K0 = F(K1) = F(F(K2) = …
 Broadcast
 Key disclosure schedule
• Time intervals
• Current key
• Interval offset
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SPINS: Security Protocols for Sensor Networks

12. time
P1
K0
P2 P3 P4 P5
K
1
K
2
P7P6
F
K1 K2
F
K3
F
K4
F
1 2 3 40
K
3
K
4
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SPINS: Security Protocols for Sensor Networks

13. time
P1
K0
P2 P3 P4 P5
K
1
K
2
F
K2K1
F
1 2 3 40
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SPINS: Security Protocols for Sensor Networks

14. Authenticated routing
 Build routing tree based on authenticated packets received
Pair-wise key agreement
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SPINS: Security Protocols for Sensor Networks

15.  SNEP
 Basic node-to-base station security
 Susceptible to synchronization loss?
 Susceptible to packet loss?
 μTESLA
 Authenticated broadcast
 No confidentiality
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SPINS: Security Protocols for Sensor Networks

16.  D.S. Alexander; W.A. Arbaugh; A,D. Keromytis; J.M. Smith. "Safety and
Security of Programmable Networks Infrastructures". IEEE Communications
Magazine. IEEE,1998.
 G. Chen, J Rixon, Q. KONG. Integration CORBA and Java for ATM Connection
Management. IEEE connection management., 2000.
 W. Stallings. Network and Internetwork Security - Principles and Practice. IEEE
Press. Prentice-Hall. IEEE, 2006.
 E. Simon, Distributed Information Systems - From Client/Server to Distributed
Multi-media, McGraw-Hill, IEEE, 2010.
 Adrian Perrig, R. Szewczyk, V. Wen, D. Culler, J. D. Tygar. SPINS: Security
Protocols for Sensor Networks, Mobile Computing and Networking
2001Rome, Italy Copyright 2001 ACM.
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SPINS: Security Protocols for Sensor Networks

17. Thank You
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