Cryptology I

Lecture spring 2020

Instructor Dominique Unruh <<surname> at ut dot ee>
Teaching assistant
Kristiine Saarmann
Lecture Period February 11 –
Lectures Tuesday, 12:15-13:45, room 1022 (Delta) (Unruh; may sometimes be switched with practice)
Practice sessions
Friday, 10:15-11:45, room 2047 (Delta) (Saarmann)
Course Material Lecture notes, blackboard photos (of practice), and exam study guide.
Language English
Mailing list
Contact Dominique Unruh <<surname> at ut dot ee>

Topics covered

2019-02-18 (lecture)Perfect secrecy. One-time pad. Limitations of one-time-pad/perfect security.[video]
2020-02-11 (lecture)Historical ciphers. Enigma.[video]


Your current amount of points in the homework can be accessed here.
Out Due Homework Solution


The course "Cryptology I" introduces the basics of cryptography. After discussing historic ciphers and their weaknesses, we introduce modern cryptographic primitives such as encryption and signature schemes, hash functions, one-way functions etc. We explain how the security of cryptographic schemes is defined and proven. We study advanced cryptographic schemes such as zero-knowledge proofs and secure function evaluation.


"Elements of Discrete Mathematics" or some comparable mathematical foundations.


The following reading supplements this lecture (optional!)

Lindell and Katz, Introduction to Modern Cryptography, Chapman & Hall, 2007.
Materials from the course "Topics of Mathematics in Cryptology" (especially the chapter on probability and the one on modular arithmetic).