Enabling custom password encryption
You need to protect passwords that are contained in your WebSphere® Application Server configuration. After creating your server profile, you can add protection by creating a custom class for encrypting the passwords.
Before you begin
About this task
Procedure
- Add the following system properties for every server and client process. For server
processes, update the server.xml file for each process. Add these properties as
a genericJvmArgument argument preceded by a -D prefix.
com.ibm.wsspi.security.crypto.customPasswordEncryptionClass= com.acme.myPasswordEncryptionClass com.ibm.wsspi.security.crypto.customPasswordEncryptionEnabled=true
Important: Regarding the wsadmin client, if you use wsadmin in connected mode, this property must be set in the deployment manager or server connected by usingAdminTask.setJVMSystemProperties
command or through the console. If you use wsadmin in local mode (conntype=NONE), you can set the property with ajavaoption
command option, as shown here:wsadmin -conntype none -lang jython -javaoption -Dcom.ibm.wsspi.security.crypto.customPasswordEncryptionClass=<encryptionClassToUse>
Tip: If the custom encryption class name is com.ibm.wsspi.security.crypto.CustomPasswordEncryptionImpl, it is automatically enabled when this class is present in the classpath. Do not define the system properties that are listed previously when the custom implementation has this package and class name. To disable encryption for this class, you must specify com.ibm.wsspi.security.crypto.customPasswordEncryptionEnabled=false as a system property. - Choose one of the following methods to configure the WebSphere Application Server runtime to load the custom encryption implementation
class:
- Place the custom encryption class in a Java™ archive (JAR) file that resides in the
${WAS_INSTALL_ROOT}/classes
directory, which you have created.Avoid trouble: WebSphere Application Server does not create the${WAS_INSTALL_ROOT}/classes
directory. For more information on the classes directory, see the topic,Creating a classes subdirectory in your profile for custom classes
. - Place the custom encryption class in a Java archive (JAR) file that resides in the
${WAS_HOME}/lib/ext
directory.
- Place the custom encryption class in a Java™ archive (JAR) file that resides in the
- Restart all server processes.
- Edit each configuration document that contains a password and save the
configuration. All password fields are then run through the WSEncoderDecoder utility, which calls the plug point when it is enabled. The {custom:alias} tags are displayed in the configuration documents. The passwords, even though they are encrypted, are still Base64-encoded. They seem similar to encoded passwords, except for the tags different.
- Encrypt any passwords that are in client-side property files by using the
PropsFilePasswordEncoder (.bat or .sh) utility.
This utility requires that the properties listed previously are defined as system properties in the script to encrypt new passwords instead of encoding them. You will need to edit the script to add the properties to the java command line. For instance:
For the list of files that need to be run through the PropsFilePasswordEncoder, refer to table two in Encoding passwords in files.%JAVA_EXE% -Dcom.ibm.wsspi.security.crypto.customPasswordEncryptionEnabled=true -Dcom.ibm.wsspi.security.crypto.customPasswordEncryptionClass=mysample.MySampleEncryption -Dcmd.properties.file=%TMPJAVAPROPFILE% "-Dwas.install.root=%WAS_HOME%" com.ibm.ws.bootstrap.WSLauncher com.ibm.ws.security.util.PropFilePasswordEncoder %*
- To decrypt passwords from client Java virtual machines (JVMs), add the properties listed previously as system properties for each client utility.
- Ensure that all nodes have the custom encryption classes in their class paths before
enabling this function. The order in which enablement occurs is important. When adding a new node to a cell that contains password encryption, the new node must contain the custom encryption classes prior to using the addNode command. Consider the following WebSphere Application Server Network Deployment enablement scenarios:
- The StandAloneProfile profile is encrypting passwords with a different key before federation to a deployment manager cell. For this scenario, you must uninstall custom password encryption to ensure that the configuration has {xor} tags preceding the passwords before running the addNode command. The same implementation of the plug point must be in the /classes directory before running the addNode command, and the proper configuration properties are set so that the new node can recognize the encrypted password format of the security.xml file after federation completes.
- The StandAloneProfile profile does not have password encryption configured before federation to a deployment manager cell. The same implementation of the plug point must be in the /classes directory before running the addNode command, and the proper configuration properties are set so that the new node can recognize the encrypted password format of the security.xml file after federation completes.
- If enabling custom password encryption in a cell with multiple nodes present, update the correct configuration properties and have the custom password encryption implementation class that is located on all nodes. Stop all processes in the cell, and then start the deployment manager. Use the administrative console to edit the security configuration and then save it. Verify that the passwords are encrypted by looking at the security.xml file to see if the passwords are preceded by {custom:alias} tags.
- Run the syncNode command on each node, and start each one individually. If any nodes fail to start, make sure that they have custom password encryption enabled properly in each security.xml file and that the implementation class is in the appropriate /classes directory for the platform.