Method and apparatus for protecting the confidentiality of passwords in a distributed data processing system
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United States of America Patent
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Mar 5, 1996
Issued Date -
N/A
app pub date -
Sep 28, 1994
filing date -
Apr 28, 1992
priority date (Note) -
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Abstract
Apparatus for protecting the confidentiality of a user's password during a remote login authentication exchange between a user node and a directory service node of a distributed, public key cryptography system includes a specialized server application functioning as an intermediary agent for the login procedure. The login agent has responsibility for approving the user's login attempt and distributing a private key to the user. However, the login agent is not trusted with the user's password and is therefore a 'semi-trusted' node. In another aspect of the invention, a login protocol enables remote authentication of the user password without transmitting the password over the network.
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