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 an extreme impact on communication, as information is no longer confidential and the credibility of the message can no longer be established.
For this reason, encryption procedures are used to ensure that the content of messages can only be interpreted by the sender and the recipient. This ensures that the information remains confidential. Furthermore, there are procedures that can be used to detect whether there has been a change in the information in a message. These security procedures are currently in widespread use and are used in particular for sensitive services such as online banking.
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 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.
Take the cybersecurity exam and get a qualified certificate!
This course content is part of the cybersecurity series on openHPI. The series consists of three courses and ends with the Cybersecurity exam in March 2021. By the Cybersecurity exam, you have the chance to receive a free record of achievement or a qualified certificate. Therefore, please attend the three courses Confidential Communication in the Internet, Digital Identities, and Cyberthreats: Malware and finish them with a confirmation of participation. This allows you to register for the cybersecurity exam which covers questions from all three courses.
Key data on the course
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Professor Dr. Christoph Meinel (Univ. Prof., Dr. sc. nat., Dr. rer. nat., 1954) is Scientific Director and CEO of the Hasso Plattner Institute for Digital Engineering gGmbH (HPI) . He is a full professor (C4) for computer science and holds a chair at HPI on Internet Technologies and Systems . His areas of research focus on future Internet technologies, in particular Information Security, Web 3.0: Semantic Web, Social and Service Web, as well as on innovative Internet applications, especially in the domains of e-learning, tele-teaching and tele-medicine. Besides, he is scientifically active in the field of innovation research Design Thinking. His earlier research work concentrated on the theoretical foundation of computer science in the areas of computational complexity and the design of efficient (OBDD-based) algorithms and data structures.
Christoph Meinel teaches in the Bachelor and Master courses in IT-Systems Engineering and at the HPI School of Design Thinking. He is honorary professor at the Computer Sciences School at Beijing University of Technology, visiting professor at Shanghai University in China, and a senior research fellow at the Interdisciplinary Centre for Security, Reliability and Trust (SnT) at the University of Luxembourg. Since 2008, together with Larry Leifer from Stanford University, he is program director of the HPI-Stanford Design Thinking Research Program. Since 2010, he chairs the Steering Committee of the HPI Future SOC lab .
Christoph Meinel is author/co-author of 10 books and 4 anthologies, as well as editor of various conference proceedings. More than 400 of his papers have been published in high-profile scientific journals and at international conferences. His high-security solution Lock-Keeper is internationally patented and licensed by Siemens AG. His tele-TASK system provides an innovative mobile system for recording and Internet broadcasting lectures and presentations used in many universities all-over the world. The virtual tele-lab for Internet Security provides the possibility to get hands-on experiences in practical issues of Internet and information security. The recently developed tele-Board supports remote work of creative teams.
Christoph Meinel is a member of acatech, the German academy of sciences and engineering. He is chairman of the German IPv6 council and of the advisory board of UTD Meraka in South Africa, and a member of the SAP Security Advisory Board. In 2006, he hosted together with Hasso Plattner the first German "National IT-Summit" of the German Federal Chancellor Dr. Angela Merkel. From 1998 to 2002 he was the founder and CEO of the Research Lab "Institute for Telematics" in Trier. Christoph Meinel is chief editor of the scientific electronic journals ECCC - Electronic Colloquium on Computational Complexity and ECDTR - Electronic Colloquium on Design Thinking Research , the IT-Gipfelblog , and the tele-TASK archive.