Formal Methods for Information Security
Spring Semester 2021 (263-4600-00L)
Overview
Lecturers and Tutors:
Dr. Ralf Sasse, Dr. Christoph Sprenger and Dr. Srdan Krstic
Lectures:
Thursday 9-11, Zoom (see course material page)
Exercises:
Thursday 11-12, Zoom (see course material page)
Credits: 5 ECTS (2V + 1U + 1A)
Project:
20% of the grade
Homework:
optional, but strongly recommended
Exams:
Oral exam (session examination - mid-to-late August), date individually communicated by examination planning office (Prüfungsplanstelle), usually in late June.
Language: English
Announcements
- Please form and register project groups of two students by Tue, Mar 25.
Description
The course treats formal methods mainly for the modeling and analysis of security protocols. Cryptographic protocols (such as SSL/TLS, SSH, Kerberos, SAML single-sign on, and IPSec) form the basis for secure communication and business processes. Numerous attacks on published protocols show that the design of cryptographic protocols is extremely error-prone. A rigorous analysis of these protocols is therefore indispensable, and manual analysis is insufficient. The lectures cover the theoretical basis for the (tool-supported) formal modeling and analysis of such protocols. Specifically, we discuss their operational semantics, the formalization of security properties, and techniques and algorithms for their verification.
The second part of this course will cover a selection of advanced topics in security protocols such as abstraction techniques for efficient verification, secure communication with humans, the link between symbolic protocol models and cryptographic models as well as RFID protocols (a staple of the Internet of Things) and electronic voting protocols, including the relevant privacy properties. Moreover, we will give an introduction to two additional topics: non-interference as a general notion of secure systems, both from a semantic and a programming language perspective (type system), and runtime verification/monitoring to detect violations of security policies expressed as trace properties.
Resources
Literature
The lecture is based mainly on various journal/conference papers, but see also (all available at the library):
- Benedikt Schmidt, "external page Formal analysis of key exchange protocols and physical protocols", 2012
- Cremers and Mauw, "Operational semantics and verification of security protocols", 2013
- Boyd, "Protocols for authentication and key establishment", 2003
- Bella, "Formal correctness of security protocols", 2007
- Ryan and Schneider, "The modeling and analysis of security protocols", 2001
- Vanstone, van Oorschot and Menezes, "Handbook of applied cryptography", 1997
- Basin et al., "external page Almost event-rate independent monitoring", 2019
- Basin et al., "external page Monitoring Metric First-order Temporal Properties", 2015
- John Rushby. "external page Noninterference, transitivity, and channel-control security policies", 1992.
Course Material
The Zoom link, lecture notes, exercises, slides, and other resources are available in our protected page secured area (log in at the top of the page first!).