TM8111 - Identity-Based Cryptography


Lessons are not given in the academic year 2021/2022

Course content

The course will be given every second year, next time autumn 2022. Identity-Based Encryption (IBE) is a kind of public-key encryption in which the public key of a user is some unique information about the identity of the user that is publicly known (e.g. the user's email address). The idea was first proposed by Adi Shamir in 1984, and it appeared particularly attractive since there is no need to acquire an identity public key prior to encryption. Interestingly, an implementation of the idea was not given until 2001. Today, it is a vibrant field of research, as it is considered an alternative to the classical PKI infrastructure.

Learning outcome

A. Knowledge: After having completed the course, the students shall have obtained basic knowledge of the principles and methods which are employed in Identity Based Encryption (IBE): the security models, security proof techniques, different implementations, as well as some of the inherent problems that accompany this type of cryptographic schemes.

Learning methods and activities

Lectures, colloquiums and discussions.

Compulsory assignments

  • Final report

Further on evaluation

Portfolio assessment is the basis for the grade in the course. The course portfolio includes a final report, which counts 40%, and a final oral exam, which counts 60%. The final report shall be based on the course material and on the latest articles on identity-based encryption published on ePrint. The final oral exam includes a presentation of the final report and answering oral questions. The entire portfolio is graded to pass/fail. The minimum passing grade is 70/100 point (70%).

Specific conditions

Compulsory activities from previous semester may be approved by the department.

Course materials

1. “Introduction to Identity-Based Encryption”, Luther Martin, ARTECH HOUSE, INC, 2008, 2. “Identity-Based Cryptography”, Edited by Marc Joye, Thomson R&D, France, and, Gregory Neven IBM Zürich Research Laboratory, Switzerland, IOS Press, 2009, 3. “Identity-Based Encryption”, Sanjit Chatterjee, Palash Sarkar, Springer Science+Business Media, LLC 2011 Latest papers posted on Cryptology Eprint Archive

More on the course



Version: 1
Credits:  7.5 SP
Study level: Doctoral degree level



Language of instruction: English

Location: Trondheim

Subject area(s)
  • Safety and Reliability
  • Telematics
  • Technological subjects
Contact information

Department with academic responsibility
Department of Information Security and Communication Technology


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