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System and method for supporting distributed computing mechanisms in a local area network server environment

  • US 5,764,887 A
  • Filed: 12/11/1995
  • Issued: 06/09/1998
  • Est. Priority Date: 12/11/1995
  • Status: Expired due to Fees
First Claim
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1. A method for improving mutual authentication during session setup with a distributed computing environment (DCE) credentials between clients and servers interconnected in a LAN server environment which does not support remote procedure calls (RPC) natively, comprising the steps of:

  • predefining an extension of a server management block (SMB) protocol to exchange credentials;

    accessing with said server as a function of said predefined extension a generic security subsystem (GSS) through a GSS API interface defined by said DCE, said accessing step further includingretrieving tokens with said clients and said server encapsulating information necessary to perform said mutual authentication, and activating a second bit in an SMB-- secmode field in a negotiate protocol (NP) response;

    detecting with said server an SMBsecpkgX response;

    exchanging, in response to said detecting, GSS tokens between said client and said server to effect said mutual authentication;

    defining a GSS/DCE token package corresponding to said SMBsecpkqX response;

    calling with said client a GSS-- initiate-- sec-- context function to obtain a first token to send to said server;

    transferring a second token in response to said first token from said client to said GSS-- initiate-- sec-- context function; and

    returning with said GSS-- initiate-- sec-- context function whether or not said server is authenticated; and

    obtaining and validating said credentials from said GSS in response to said accessing.

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