CSC 774 Advanced Network Security

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1 CSC 774 Advanced Network Security 1. Instructor: Dr. Peng Ning, Office: 3258 EB II, Centennial Campus Phone: (919) URL: Office hours: See course website Syllabus 2. Course Objectives: By the end of this course, students will be able to: 1. List the common threats and vulnerabilities of networked systems 2. Describe the following electronic payment systems: NetBill, PayWords, MicroMint, fair exchange protocols. 3. Describe and give examples of broadcast authentication protocols. 4. Explain the two types of group management techniques: group key agreement and group key distribution. 5. Describe the following group key management protocols: Group Diffie-Hellman protocol, Tree-based Group Diffie-Hellman protocol, LKH, and SDR. 6. Explain at least on secure MANET routing protocol. 7. Describe security mechanisms for secure routing in MANET. 8. Explain at least one approach to detecting selfish nodes in MANET. 9. Describe µtesla, the broadcast authentication protocol for sensor networks. 10. Explain the following key pre-distribution protocols for sensor networks: random key predistribution scheme, q-composite scheme, random pairwise keys scheme, polynomial pool based random key predistribution scheme. 11. Explain the techniques for secure and resilient location estimation in wireless sensor networks. 12. Explain client puzzle and its effects on denial of service (DoS) attacks. 13. Use client puzzles to mitigate potential DoS attacks. 14. Use one-way function chains, collisions of one-way function images, and Merkle hash tree to provide authentication. 15. Identify flaws in cryptographic protocols. 3. Text: No textbook is required. Handouts (All handouts are available on-line): 1. R. Merkle. "A digital signature based on a conventional encryption function." In Advances in Cryptology -CRYPTO '87, pages , R. Merkle. "A certified digital signature." In Advances in Cryptology -CRYPTO '89, pages , 1990.

2 3. A. Juels and J. Brainard, "Client puzzles: A Cryptographic Countermeasure Against Connection Depletion Attacks." in: Proceedings of NDSS '99, 1999, pp T. Aura, P. Nikander, and J. Leiwo, "DoS-Resistant Authentication with Client Puzzles." In Proceedings of the 8th International Workshop on Security Protocols, LNCS 2133, X. Wang, and M. Reiter, "Mitigating Bandwidth-Exhaustion Attacks using Congestion Puzzles." In Proceedings of the 11th ACM Conference on Computer and Communications Security (CCS '04), B. Waters, A. Juels, J. Halderman, and E. Felten, "New Client Puzzle Outsourcing Techniques for DoS Resistance." In Proceedings of the 11th ACM Conference on Computer and Communications Security (CCS '04), Adi Shamir. "Identity-Based Cryptosystems and Signature Schemes." Advances in Cryptology: Proceedings of CRYPTO 84, Lecture Notes in Computer Science, 7:47--53, Dan Boneh, Matthew K. Franklin, "Identity-Based Encryption from the Weil Pairing." Advances in Cryptology - Proceedings of CRYPTO Carlo Blundo, Paolo D'Arco, Antonio Giorgio Gaggia. "A τ-restricted Key Agreement Scheme." The Computer Journal, Volume 42, No.1, page , C. Castelluccia, S. Jarecki and G. Tsudik. "Secret Handshakes from CA-oblivious Encryption." IACR AsiaCrypt'04, December D. Balfanz, G. Durfee, N. Shankar, D.K. Smetters, J. Staddon, and H.C.Wong. "Secret handshakes from pairing-based key agreements." In IEEE Symposium on Security and Privacy, Michael O. Rabin. "Efficient dispersal of information for security, load balancing, and fault tolerance." In Journal of the ACM, Vol. 36, No. 2, B. Cox, J.D. Tygar, and M. Sirbu. Netbill Security and Transaction Protocol, In The First USENIX Workshop on Electronic Commerce, pages , July R. Rivest and A. Shamir, PayWord and MicroMint: Two simple micropayment schemes, in Proceedings of Security Protocols Workshop, pages: 69 87, S. Micali and R. Rivest. Micropayments revisited. In Bart Preneel, editor, Progress in Cryptology --- CT-RSA 2002, Lecture Notes in Computer Science, Vol Springer- Verlag, February 18 22, N. Asokan, M. Schunter, and M. Waidner. Optimistic Protocols for Fair Exchange, In Proceedings of 4th ACM Conference on Computer and Communications Security, Zurich, April A. Perrig, R. Canetti, D. Song, and D. Tygar, Efficient Authentication and Signing of Multicast Streams over Lossy Channels, in Proc. of IEEE Security and Privacy Symposium, May A. Perrig, R. Canetti, D. Song, and D. Tygar, Efficient and Secure Source Authentication for Multicast, in Proceedings of Network and Distributed System Security Symposium, February A. Perrig, "The BiBa One-Time Signature and Broadcast Authentication Protocol," in Proceedings of the ACM Conference on Computer and Communications Security, November M. Steiner, G. Tsudik, and M. Waidner, Diffie-Hellman Key Distribution Extended to Group Communication, in Proceedings of the 3rd ACM Conference on Computer and Communications Security, pages , Y. Kim, A. Perrig and G. Tsudik, Simple and fault-tolerant key agreement for dynamic collaborative groups, in Proceedings of the 7th ACM Conference on Computer and Communications Security, pages , 2000.

3 22. Suvo Mittra, "Iolus: a framework for scalable secure multicasting," In Proceedings of the ACM SIGCOMM '97, pages , Chung Kei Wong, Mohamed Gouda, Simon S. Lam, "Secure group communications using key graphs," In Proceedings of SIGCOMM '98, pages: Y. Hu, A. Perrig, and D. B. Johnson, Ariadne: A Secure On-Demand Routing Protocol for Ad~Hoc Networks, in Proceedings of the Eighth Annual International Conference on Mobile Computing and Networking (MobiCom 2002), September, Yih-Chun Hu, Adrian Perrig, David Johnson, "Efficient Security Mechanisms for Routing Protocols", In Proceedings of NDSS S. Marti, T. J. Giuli, K. Lai, and M. Baker, Mitigating routing misbehavior in mobile ad hoc networks, in Proceedings of the Sixth annual ACM/IEEE International Conference on Mobile Computing and Networking, pages , L. Eschenauer and V. D. Gligor, "A key-management scheme for distributed sensor networks," in Proceedings of the 9th ACM Conference on Computer and Communications Security, pages , November, H. Chan, A. Perrig, and D. Song, Random Key Predistribution Schemes for Sensor Networks, in Proceedings of IEEE Symposium on Research in Security and Privacy, pages , May D. Liu and P. Ning, Establishing Pairwise Keys in Distributed Sensor Networks, in Proceedings of the 10th ACM Conference on Computer and Communications Security (CCS '03), pages , Washington D.C., October, Bartosz Przydatek, Dawn Song, Adrian Perrig, "SIA: Secure Information Aggregation in Sensor Networks", In Proceedings of ACM SenSys Donggang Liu, Peng Ning, Wenliang Du, "Attack-Resistant Location Estimation in Sensor Networks," in Proceedings of The Fourth International Symposium on Information Processing in Sensor Networks (IPSN '05), pages , April Donggang Liu, Peng Ning, Wenliang Du, "Detecting Malicious Beacon Nodes for Secure Location Discovery in Wireless Sensor Networks," in Proceedings of the The 25th International Conference on Distributed Computing Systems (ICDCS '05), pages , June A. Juels and J. Brainard, "Client puzzels: A cryptographic countermeasure against connection depletion attacks," In Proceedings of the 6th Network and Distributed Systems Security Symposium (NDSS 99), February P. MacKenzie and M. K. Reiter. Delegation of cryptographic servers for capture-resilient devices. Distributed Computing 16(4): , December P. MacKenzie and M. K. Reiter. Networked cryptographic devices resilient to capture. International Journal of Information Security, 2(1):1 20, November M. K. Reiter, A. Samar, and C. Wang. The design and implementation of a JCAcompliant capture protection infrastructure. In Proceedings of the 22nd IEEE Symposium on Reliable Distributed Systems, October Course Organization and Scope: (Assume each lecture takes 75 minutes. The following topics need 30 lectures (or 15 weeks).) Introduction to network security (1 lecture) o Basic concepts: security services, security mechanisms, etc. o Scope of course 2. Network Security Primitives (5 lectures) o Absolute basics: Secret key and public key cryptosystems (RSA, DSA, Diffie- Hellman key exchange), one-way hash function

4 o One-way key chain, Merkle hash tree o Traditional key distribution techniques (Key distribution center, Certificate based key distribution) o Client puzzles o Zero-knowledge proof o Bloom filter o Secret sharing o ID-based cryptography o Secret handshake o Rabin s information dispersal algorithm 3. Electronic payment systems (3 lectures) o Electronic billing systems o Micropayments o Fair exchange protocols 4. Broadcast authentication (2 lectures) o TESLA and EMSS o BiBa 5. Group key management (4 Lectures) o Basic concepts in group key management o Group key agreement protocols (GDH, B-D protocols, TGDH) o Group key distribution protocols (LKH, secret-sharing based protocols, SDR) 6. Security in ad-hoc networks (4 lectures) o Secure ad-hoc routing protocols o Detecting selfish or malicious nodes o Broadcast authentication o Key management for sensor networks o Secure location verification 7. Network intrusion detection (1 lecture) o Intrusion alert correlation 8. In-class presentations of advanced topics (10 lectures) o Topics selected by the instructor on a per-semester basis o Students present the above topics individually or in group (depending on enrollment) o 25 minutes per presentation (3 presentations per lecture) o See Section H for grading policy for in-class presentations 5. Schedule of Reading Assignments: See schedule of classes on course website. 6. Schedule of homework due dates, quizzes and exams: There are five homework assignments and two exams. Quizzes are given in the form of popup quizzes. Pop-up quizzes are adopted to encourage the students to study during the nonexam weeks. The results are not counted in the final grade. Homework 1: See schedule of classes on course website. Mid-term exam #1: week 6

5 Mid-term exam #2: week 12 Term paper: end of semester. 7. Grading: Assignments: 10%; midterm #1: 25%; midterm #2: 25%; research paper: 30%; in-class presentation: 10%. The final grades are computed according to the following rules: o A+: >= 95% o A: >= 90% and < 95% o A-: >= 85% and < 90% o B+: >= 80% and < 85% o B: >= 75% and < 80% o B-: >= 70% and < 75% o C+: >= 66% and < 70% o C: >= 63% and < 66% o C-: >= 60% and < 63% o D+: >= 56% and < 60% o D: >= 53% and < 56% o D-: >= 50% and < 53% o F: < 50%. 8. Policies on incomplete grades and late assignments: Homework and project deadlines will be hard. Late homework will be accepted with a 10% reduction in grade for each class period they are late by. However, once a homework assignment is discussed in class, submissions will no longer be accepted. All assignments must be turned in before the start of class on the due date. 9. Policies on absences (excused and unexcused) and scheduling makeup work: You may be excused from an exam only with a university approved condition, with proof. For example, if you cannot take an exam because of a sickness, we will need a doctor's note. Events such as going on a business trip or attending a brother's wedding are not an acceptable excuse for not taking an exam at its scheduled time and place. You will have one chance to take a makeup exam if your absence is excused. There will be no makeup for homework assignments. 10. Course prerequisites: CSC 570 Computer Networks, CSC 574 Information Systems Security 11. Academic integrity: The university, college, and department policies against academic dishonesty will be strictly enforced. You may obtain copies of the NCSU Code of Student Conduct from the Office of Student Conduct, or from the following URL.

6 12. NC State policy on working with students with disabilities: Reasonable accommodations will be made for students with verifiable disabilities. In order to take advantage of available accommodations, students must register with Disability Service for Students at 1900 Student Health Center, Campus Box 7509, For more information on NC State s policy on working with students with disabilities, please see Laboratory Safety or Risk Assumption: Not Applicable. 14. Pass-through Charges: Not applicable.

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