You're reading from TLS Cryptography In-Depth

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Published inJan 2024

PublisherPackt

ISBN-139781804611951

Edition1st Edition

Concepts

Cryptography

Authors (2):

Dr. Paul Duplys

Dr. Roland Schmitz

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6.5 TLS version 1.2

While we are largely focusing on TLS version 1.3 in this book, it is also instructive to take a look at version 1.2. Firstly, there are still many TLS servers that do not support version 1.3. Secondly, and more importantly, TLS version 1.2 and TLS version 1.3 share the same basic architecture. In particular, the basic steps in the so-called handshake protocol are the same but can be better explained in the context of TLS version 1.2, which is a bit less dense than the TLS version 1.3 handshake.

6.5.1 Subprotocols in TLS version 1.2

TLS version 1.2 consists of several subprotocols. Their location within the internet protocol stack and their relation to each other are shown in Figure 6.4.

Figure 6.4: TLS subprotocols

Handshake protocol: This protocol is invoked when the client and server meet for the first time or if they want to resume an earlier session. In the former case, they need to agree on a set of algorithms that protect the channel between them...

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TLS Cryptography In-Depth

Published in: Jan 2024Publisher: PacktISBN-13: 9781804611951

Authors (2)

Dr. Paul Duplys

Dr. Paul Duplys is chief expert for cybersecurity at the department for technical strategies and enabling within the Mobility sector of Robert Bosch GmbH, a Tier-1 automotive supplier and manufacturer of industrial, residential, and consumer goods. Previous to this position, he spent over 12 years with Bosch Corporate Research, where he led the security and privacy research program and conducted applied research in various fields of information security. Paul's research interests include security automation, software security, security economics, software engineering, and AI. Paul holds a PhD degree in computer science from the University of Tuebingen, Germany.
Read more about Dr. Paul Duplys

Dr. Roland Schmitz

Dr. Roland Schmitz has been a professor of internet security at the Stuttgart Media University (HdM) since 2001. Prior to joining HdM, from 1995 to 2001, he worked as a research engineer at Deutsche Telekom, with a focus on mobile security and digital signature standardization. At HdM, Roland teaches courses on internet security, system security, security engineering, digital rights management, theoretical computer science, discrete mathematics, and game physics. He has published numerous scientific papers in the fields of internet and multimedia security. Moreover, he has authored and co-authored several books. Roland holds a PhD degree in mathematics from Technical University Braunschweig, Germany.
Read more about Dr. Roland Schmitz

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