WAS v8.5 > Secure applications > Authenticate users > Select an authentication mechanism > Configure LTPA and work with keys > Step 3. Import and export keys.

Export LTPA keys

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

Verify 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 dmgr console to export key files for LTPA so they can be shared across domains:

  1. Type http://server_name:port_number/ibm/console in a web browser to access the dmgr 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 you want the exported LTPA keys to reside. You must have write permission to this file.

  6. Click Export keys to export the keys to the location that you 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 WAS.

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

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 Importing LTPA keys


Related concepts:

LTPA key sets and key set groups


Related


Generate LTPA keys
Importing LTPA keys
Disable automatic generation of LTPA keys
Change the number of active LTPA keys


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