KEY DISTRIBUTION FOR SYMMETRIC KEY CRYPTOGRAPHY: The major problem in symmetric key cryptography is that of the key distribution because the key must be shared secretly 2. Keys can be distributed by any one of the following ways: 1. Sender can select the key and physically deliver it to receiver. Methods for generating exchnange or distribute keys. Best way to distribute your key is by using one of the key servers that are available, such as keyserver.ubuntu.com, pgp.mit.edu or keyserver.pgp.com. If you use Seahorse (default key manager under Ubuntu), it automatically syncs your keys to one of these servers. Users can then look up your key using your email address or keyid. Lecture 10: Key Distribution for Symmetric Key Cryptography and Generating Random Numbers Lecture Notes on “Computer and Network Security” by Avi Kak ([email protected]) February 13, 2020 6:22am c 2020 Avinash Kak, Purdue University Goals:. Why might we need key distribution centers?. Master key vs. Session key. The Needham-Schroeder. The establishment of symmetric keys can be performed in several ways: (Authenticated) Key Agreement (KA) Sending of an (authenticated) encrypted key, also known as key wrapping. Derivation from a base key using a Key Derivation Function (KDF), using other data as input, for instance a unique number.
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