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Archive for October, 2008

In my article on WSF/C wsclient command line tool I have explained briefly on how Rampart/C is used to provide security for messages sent using wsclient. Here I would like to explain in detail some examples.

I assume you have installed Rampart/C and wsclient as explained in respective documentations. When you install WSF/C both of them get automatically installed.

Service used is the sec_echo sample service which is deployed when you install Rampart/C.

Also you need to set your WSFC_HOME variable to your repository location.

Now execute the script providing the port you wish to run simple axis2 server.

$ cd WSFC_HOME/bin/samples/wsclient

sh sec_echo.sh 9091

Let me explain what happen when you execute this script.

First you need to change the sec_echo/services.xml according to the policy you wish it to have. So the script will copy a services.xml file with the desired policy and restart the server. After that it execute the following command.

$WSFC_HOME/bin/wsclientsoapno-mtomuser alice —digestpassword password —timestamp sign-bodykey /axis2c/deploy/bin/samples/rampart/keys/ahome/alice_key.pem —certificate /axis2c/deploy/bin/samples/rampart/keys/ahome/alice_cert.cert —recipient-certificate /axis2c/deploy/bin/samples/rampart/keys/ahome/bob_cert.cert encrypt-signatureencrypt-payload http://localhost:9090/axis2/services/sec_echo < $WSFC_HOME/bin/samples/wsclient/data/echo.xml

When you closely examine the above command you can see that user alice send a echo message to the service which is signed and encrypted. To sign the body of the message she need her private key which she provide through —key option. To encrypt the body of the message she need the recipients public key which she provide through —recipient-certificate option.  You need to provide public key of alice using option —certificate which is required for verification process. Note that service policy requires you to sign the signature and timestamp the message. The default behaviour of wsclient is to sign the message before encrypting it. If you need to change this behaviour(encrypt before sign) use —encrypt-before-signing option.

Now if you need to run the sample by providing a policy file run the following sample.

$ sh sec_echo_with_policy.sh 9091

The ability to provide a policy file enable the wsclient to provide fine grained security policies required by the service.  Following is the wsclient command used to send the request.

$WSFC_HOME/bin/wsclient —soapno-mtomuser alice —digestpassword password —key /axis2c/deploy/bin/samples/rampart/keys/ahome/alice_key.pem —certificate /axis2c/deploy/bin/samples/rampart/keys/ahome/alice_cert.cert —recipient-certificate /axis2c/deploy/bin/samples/rampart/keys/ahome/bob_cert.cert —policy-file $WSFC_HOME/bin/samples/wsclient/data/policy.xml http://localhost:9090/axis2/services/sec_echo <$WSFC_HOME/bin/samples/wsclient/data/echo.xml

Note that —policy-file option is used to provide the policy xml file. Also since now security policy is provided by policy xml file you don’t need to use wsclient specific options like —timestamp, —sign-body, —encrypt-signature and —encrypt-payload

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