In this course students will learn the foundations of modern cryptography.

In class lectures and exercise sessions.

1. Information Theoretic CryptographyOne-time padNotions of security2. Private-Key EncryptionAdvanced Encryption Standard (AES)Modes of operationHash functions3. Public-Key EncryptionRSADiffie-Hellman Key ExchangeElGamalDigital signaturesIf enough time is left at the end of the semester:4. Lattice-Based CryptographyInteger latticesLearning With Errors (LWE) and Short-Integer Solution (SIS)LWE-based public key encryptionSIS-based digital signature

Elementary algebra and discrete probability theory

Written or oral examination (depending on the total number of exam registrations).

Content of the course and examples similar to the exercises of the course.

The questions of the exam will be weighted with points. For a positive result one has to reach at least 50% of all possible points.