Including parts of Chapter 11 and Section 9.6.3 of [Hai19]
(Usage hints for this presentation)
Computer Structures and Operating Systems 2022
Dr. Jens Lechtenbörger (License Information)
De-Mail is a German approach defining legally binding, “secure” e-mail
gpg --version… gpg (GnuPG) 2.1.13 … Öff. Schlüssel: RSA, ELG, DSA, ECDH, ECDSA, EDDSA Verschlü.: IDEA, 3DES, CAST5, BLOWFISH, AES, AES192, AES256, TWOFISH, CAMELLIA128, CAMELLIA192, CAMELLIA256 Hash: SHA1, RIPEMD160, SHA256, SHA384, SHA512, SHA224
SHA-1, SHA-2: Designed by NSA
Hi Bob, let's get started tomorrow! Best wishes Alice
gpg --print-md SHA1 alice.txt
gpg --print-md SHA256 alice.txt
“End-to-End Encryption (Hybrid)” by Noah Lücke, Moritz van den Berg, Anton Levkau, Nick Vrban and Jannes Werk under CC BY-SA 4.0; converted from GitLab
gpg -e -a -r Bob file
file.asc; more precisely:
Verification whether [M] sent by Alice and unchanged along the way
gpg --sign -a -b alice.txt
gpg --verify alice.txt.asc
This document is part of an Open Educational Resource (OER) course on Operating Systems. Source code and source files are available on GitLab under free licenses.
Except where otherwise noted, the work “OS11: Security”, © 2017-2022 Jens Lechtenbörger, is published under the Creative Commons license CC BY-SA 4.0.
No warranties are given. The license may not give you all of the permissions necessary for your intended use.
In particular, trademark rights are not licensed under this license. Thus, rights concerning third party logos (e.g., on the title slide) and other (trade-) marks (e.g., “Creative Commons” itself) remain with their respective holders.