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More precisely describe the Lowe fix. |
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===An attack on the protocol===
Unfortunately, this protocol is vulnerable to a [[man-in-the-middle attack]]. If an impostor can persuade A to initiate a session with him(how ? this is wrong, tell the mechanism how ?), he can relay the messages to B and convince B that he is communicating with A.
Ignoring the traffic to and from S, which is unchanged, the attack runs as follows:
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