We address a simple protocol that can be used to distribute a shared key to three or more users over an insecure channel. We use the Elgamal protocol to set up the system and we define a generalization of Massey Omura protocol to allow one user to send a message or a shared key to a group of users. Moreover we analyse some problems about the decryption shared key of Massey Omura generalized protocol and the man-in-the- middle problem.

Massey Omura Multiple Users Key Distribution

MERLANTI, Danilo;MAZZINI, Gianluca
2011

Abstract

We address a simple protocol that can be used to distribute a shared key to three or more users over an insecure channel. We use the Elgamal protocol to set up the system and we define a generalization of Massey Omura protocol to allow one user to send a message or a shared key to a group of users. Moreover we analyse some problems about the decryption shared key of Massey Omura generalized protocol and the man-in-the- middle problem.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/1515721
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