Method and system for changing an authorization password or key in a distributed communication network
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United States of America Patent
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Jul 7, 1998
Grant Date -
N/A
app pub date -
Feb 8, 1996
filing date -
Sep 20, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A robust and secure password (or key) change method between a user and an authentication server in a distributed communication network is disclosed. The protocol requires the exchange of only two messages between the user desiring the key change and the server, the user's request including, at least partly encrypted, an identification of the sending user, old and new keys, and two nonces, at least one including a time indication. The authentication server's response includes a possibly encrypted accept/reject indication and the regularly encrypted request from the user.
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