Confidential Communication in the Internet

Target Groups:

Everyone interested in encryption methods and digital signatures

Professional Requirements:

general IT knowledge, solid mathematical knowledge

Technical Requirements:

Keine besonderen Anforderungen.

Classification of the Federal Employment Agency:

• C 1410-20-10 Internetnutzung - allgemein

Contents

A message on the Internet is sent through several networks and via different stations on its way to the target system. The individual stations are responsible for ensuring that the message is properly forwarded and finally delivered to the correct recipient. Each of these stations, if the message is sent in plain text, can receive the message and read its content. This means that a potential attacker, if he controls one of these intermediate systems, can also read the content of the message and even modify it before retransmitting it. Such attacks can have extreme effects on communication.

In this course we will look at how and whether your connection to online banking is secure or whether the content of an e-mail is trustworthy. For this purpose we will deal with the basics of cryptography, security objectives and different types of encryption. In addition, we will provide insights into different models and standards that are used in practice.

Contents:
- Introduction
- Safety objectives
- Cryptography
- Cryptoprotocols & Attacks
- Certificates and Trust Center
- Encryption
- Signatures
- Technical digressions (AES, hash functions, ...)