Appeal No. 2003-0325
Application No. 08/775,077 Page 6
service 514 that makes use of a second authentication agent 512.
Requestor 504 communicates with service 514 via request-for-
service request 411 and its reply 412 (col. 8, lines 35-49). In
addition (see figures 4-6), before a process at a first machine
503 begins to send a request 411, to use the services of a second
machine 513, an authentication procedure is performed. The
requesting process 504 sends a message 520 to the first
authenticating agent 502 at the first node to initiate
authentication. This message contains information 531 describing
the process making the request and information 532 identifying
the requested service. The first authentication agent 502 uses
the content of message 520 to construct a reply 521. Reply 521
contains authentication information and an authentication ack
534. The service receiving the request 411 passes the
authentication information to the authentication agent 512. In
message 524 sent from agent 512 to service 514, the agent places
a set of credentials 536 that describe the remote requestor in a
manner that is meaningful to the service 514. The service makes
a determination, based on the credentials on the authentication
and authorization of the requestor's permission to request an
operation 420 of the service 514. The results of the
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