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Globus Toolkit 4.0 release includes NCSA contributions

released May 03, 2005

Version 4.0 of the Globus Toolkit (GT4), developed by the Globus Alliance, is now available for download from This is the first Globus Toolkit release to include the MyProxy and GSI-OpenSSH software developed at NCSA; GT4 components also are packaged using the Grid Packaging Toolkit developed at NCSA.

The Globus Toolkit provides key enabling software and services that let people share computing power, databases, and other tools securely online across corporate, institutional, and geographic boundaries without sacrificing local autonomy. It has been deployed broadly worldwide for both science and industry.

The MyProxy online credential repository provides secure and convenient storage for grid security credentials. MyProxy is mature, open source software that has been used by the grid community for over four years, in projects such as NEESgrid, TeraGrid, EU DataGrid, and the NASA Information Power Grid. MyProxy allows users to easily obtain an X.509 proxy credential from the repository, without requiring users to manage private key and certificate files. Grid portals use MyProxy to obtain proxy credentials, so users can access secure grid resources via the portal interface. Job management software, such as Condor-G, uses MyProxy to renew credentials for long-running jobs. MyProxy can also be integrated with CA software, such as the Globus Simple CA, to ease credential distribution.

GSI-OpenSSH is a modified version of OpenSSH, available from NCSA since 2002, that adds support for X.509 proxy certificate authentication and delegation, providing a single sign-on remote login and file transfer service. GSI-OpenSSH can be used to login to remote systems and transfer files between systems without entering a password, relying instead on a valid proxy credential for authentication. GSI-OpenSSH forwards proxy credentials to the remote system on login, so commands requiring proxy credentials (including GSI-OpenSSH commands) can be used on the remote system without the need to manually create a new proxy credential on that system.

The Globus Alliance is a consortium dedicated to the collaborative design, development, testing, and support of the open source Globus Toolkit. NCSA joined the Globus Alliance in August 2004. The other Globus Alliance members are Argonne National Laboratory, the University of Southern California's Information Sciences Institute (ISI), the University of Chicago, the University of Edinburgh, the Swedish Center for Parallel Computers, and Univa Corporation. For more information, see


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