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Cryptography in networking

Individual course

Max amount of FITech students: 10

Persons without a valid study right to a Finnish university have preference to this course.

Course contents

  • Basics of cryptography
  • Mathematical tools

Symmetric ciphers:

  • AES, differential and linear cryptanalysis, block cipher modes, random number generators, stream ciphers, cryptanalysis against stream ciphers
  • Public-key encryption:
  • RSA, side channel attacks, quantum computer attacks

Digital signatures:

  • Hash functions, certificates, PKI

Systems based on discrete logarithms:

  • Diffie-Hellman key exchange, Man-in-the-middle attacks, One-time pad, ElGamal, Elliptic Curve Cryptography

Cryptographic protocols:

  • Key establishment, attacks, design principles

Special protocols:

  • Secret sharing, Bitcoin, Zero-knowledge proofs, Oblivious transfer, Secure multiparty computation, Authenticated encryption

Communication security:

  • TLS, IPSec

Cryptography for mobile security:

  • GSM, 3G, LTE, 5G, WiFi, Bluetooth

Learning outcomes

The student learns the most important cryptographic concepts and relevant mechanisms that are used in realizing those concepts. Examples of these concepts are symmetric ciphers, public-key encryption, digital signatures, message authentication codes and has functions. The student also learns basic mathematical tools that are used as building blocks in cryptographic mechanisms. The student becomes able to apply mathematics for the purposes of cryptography. More advanced cryptographic primitives are also learnt at least on conceptual level. Such primitives include protocols for e.g. zero-knowledge proofs, secret sharing and multipart computations. The student learns how to apply cryptographic tools for information security and privacy, especially in the domain of networking. Mobile communication and block chains are examples of application areas that the student becomes familar with.

Completion methods

Contact teaching. Exam at the end of the course.

  • The lectures will be held on Tuesdays at 12-14 and on Wednesdays at 16-18 (Material will be available after the lectures)
  • The exercises will be held on Thursdays at 16-18.

The student has to complete 25% of the exercise problems to qualify to the exam. Completion of good portion of exercise problems provides bonus points in the exam. Completion of 25% provides 0 bonus points while completion of 90% provides bonus points worth of 20% of points available in the exam.

More information of the University of Helsinki course page.

You can get a digital badge after completing this course.

Responsible teacher

University of Helsinki
Valtteri Niemi

Contact person for applications

FITech Network University
Fanny Qvickström, Student services specialist
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ICT Studies
5G technology,
Internet technology
Course code:
0 €
Teaching period:
Application deadline:
Application period has ended
Host university:
University of Helsinki
Study is open for:
Adult learner,
Degree student
Teaching methods:
Place of contact learning:
General prerequisites:
Basic university mathematics course. Basic university-level course in networking.
Study suitable for:
The course is targetted for first year master students
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