question archive You have to choose the cryptographic algorithms for a KDC where two different classes of encryption occur: ekU,KDC (), where U denotes an arbitrary network node (user), ekses() for the communication between two users
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You have to choose the cryptographic algorithms for a KDC where two different classes of encryption occur: ekU,KDC (), where U denotes an arbitrary network node (user), ekses() for the communication between two users. You have the choice between two different algorithms, DES and 3DES (TripleDES), and you are advised to use distinct algorithms for both encryption classes.
Which algorithm do you use for which class? Justify your answer including aspects of security as well as celerity.
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