Importance

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Abstract

A method for a first participant to establish a shared secret with a second participant, where the first participant and the second participant share a password-based first master key and a hash function includes sending a first message including a first private value for the second participant and a first authenticator for the second participant encrypted with the first master key. The first message also includes a first hashed authenticator for the first participant encrypted with a first shared secret key. The first message also includes a first public value for the first participant. The first participant receives a second message, the second message including the first authenticator for the second participant and a first public value for the second participant encrypted with the first shared secret key. The first participant sends a third message, the third message including the first authenticator for the first participant, a second hashed authenticator for the first participant, a second authenticator for the second participant and a second master key encrypted with a second shared secret key. The third message also includes a second public value for the first participant. A fourth message is received by the first participant, the fourth message including a second authenticator for the second participant and a second public value for the second participant encrypted with the second shared secret key.

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First Claim