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Export Lightweight Third Party Authentication keys

To support SSO in WebSphere Application Server across multiple WebSphere Application Server domains or cells, you must share the LTPA keys and the password among the domains.

Make sure the time in the domains is similar so that we do not mistakenly interpret the tokens as expired between the cells.

Complete the following steps in the console to export key files for LTPA so that they can be shared across domains:

  1. Type http://server_name:port_number/ibm/console in a web browser to access the console.

  2. Click Security > Global security > Authentication mechanisms and expiration.

  3. Click LTPA.

  4. In the Password and Confirm password fields, enter the password used to encrypt the LTPA keys. Remember the password so that we can use it later when the keys are imported into the other cell.

  5. In the Fully qualified key file name field, specify the fully qualified path to the location where we want the exported LTPA keys to reside. We must have write permission to this file.

  6. Click Export keys to export the keys to the location that specified in the Fully qualified key file name field.

  7. Specify the Internal server ID used for interprocess communication between servers. The server ID is protected with an LTPA token when sent remotely. We can edit the internal server ID to make it identical to server IDs across multiple application server administrative domains (cells). By default this ID is the cell name.

  8. Click OK and Save.


Results

We can share LTPA keys and passwords among domains on WebSphere Application Server.

LTPA keys that are exported to a file should be readable in an ASCII editor like Notepad.


What to do next

After exporting the keys from one cell, you must import those keys into the other cell. If the other cell is on a separate system, you must ftp the key file in binary format. For more information, see Import Lightweight Third Party Authentication keys


Related concepts

  • Lightweight Third Party Authentication key sets and key set groups


    Related tasks

  • Generating Lightweight Third Party Authentication keys
  • Import Lightweight Third Party Authentication keys
  • Disable automatic generation of Lightweight Third Party Authentication keys
  • Change the number of active LTPA keys