Signed/encrypted assertions

This example set up federation using AM as the identity provider with signed/encrypted assertions.

Before you start, set up and test the example in Unsigned/unencrypted assertions.

Set up the SAML keystore:
1. Find the values of AM’s default SAML keypass and storepass:
  $ more /path/to/am/secrets/default/.keypass $ more /path/to/am/secrets/default/.storepass
2. Copy the SAML keystore from the AM configuration to PingGateway:
  $ cp /path/to/am/secrets/keystores/keystore.jceks /path/to/ig/secrets/keystore.jceks
  Legacy keystore types such as JKS and JCEKS are supported but are not secure. Consider using the PKCS#12 keystore type.
Configure the Fedlet in PingGateway:
1. In FederationConfig.properties, make the following changes:
  1. Delete the following lines:
    
    com.sun.identity.saml.xmlsig.keystore=%BASE_DIR%/security/keystores/keystore.jks
    
    com.sun.identity.saml.xmlsig.storepass=%BASE_DIR%/.storepass
    
    com.sun.identity.saml.xmlsig.keypass=%BASE_DIR%/.keypass
    
    com.sun.identity.saml.xmlsig.certalias=test
    
    com.sun.identity.saml.xmlsig.storetype=JKS
    
    am.encryption.pwd=@AM_ENC_PWD@
  2. Add the following line:
    
    org.forgerock.openam.saml2.credential.resolver.class=org.forgerock.openig.handler.saml.SecretsSaml2CredentialResolver
    
    This class is responsible for resolving secrets and supplying credentials.
    
    Be sure to leave no space at the end of the line.
2. In sp.xml, make the following changes:
  1. Change AuthnRequestsSigned="false" to AuthnRequestsSigned="true".
  2. Add the following KeyDescriptor just before </SPSSODescriptor>
    
    <KeyDescriptor use="signing"> <ds:KeyInfo xmlns:ds="http://www.w3.org/2000/09/xmldsig#" > <ds:X509Data> <ds:X509Certificate> </ds:X509Certificate> </ds:X509Data> </ds:KeyInfo> </KeyDescriptor> </SPSSODescriptor>
  3. Copy the value of the signing certificate from idp.xml to this file:
    
    <KeyDescriptor use="signing"> <ds:KeyInfo> <ds:X509Data> <ds:X509Certificate> MII...zA6 </ds:X509Certificate>
    
    This is the public key used for signing so that the IDP can verify request signatures.
Replace the remote service provider in AM:
1. Select Applications > Federation > Entity Providers, and remove the sp entity provider.
2. Drag in or import the new sp.xml updated in the previous step.
3. Select Circles of Trust: Circle of Trust.

Set up PingGateway

In the PingGateway configuration, set environment variables for the following secrets, and then restart PingGateway:

$ export KEYSTORE_SECRET_ID='a2V5c3RvcmU='
$ export SAML_KEYSTORE_STOREPASS_SECRET_ID='base64-encoded value of the SAML storepass'
$ export SAML_KEYSTORE_KEYPASS_SECRET_ID='base64-encoded value of the SAML keypass'

The passwords are retrieved by a SystemAndEnvSecretStore, and must be base64-encoded.

Remove saml-filter.json from the configuration, and add the following route, replacing the path to keystore.jceks with your path:

Linux
Windows

$HOME/.openig/config/routes/saml-filter-secure.json

%appdata%\OpenIG\config\routes\saml-filter-secure.json

{
  "name": "saml-filter-secure",
  "baseURI": "http://app.example.com:8081",
  "condition": "${find(request.uri.path, '^/home')}",
  "heap": [
    {
      "name": "SystemAndEnvSecretStore-1",
      "type": "SystemAndEnvSecretStore"
    },
    {
      "name": "KeyStoreSecretStore-1",
      "type" : "KeyStoreSecretStore",
      "config" : {
        "file" : "/path/to/ig/keystore.jceks",
        "storeType" : "jceks",
        "storePasswordSecretId" : "saml.keystore.storepass.secret.id",
        "entryPasswordSecretId" : "saml.keystore.keypass.secret.id",
        "secretsProvider" : "SystemAndEnvSecretStore-1",
        "mappings" : [ {
          "secretId" : "sp.signing.sp",
          "aliases" : [ "rsajwtsigningkey" ]
        }, {
          "secretId" : "sp.decryption.sp",
          "aliases" : [ "test" ]
        } ]
      }
    }
  ],
  "handler": {
    "type": "Chain",
    "config": {
      "filters": [
        {
          "name": "SamlFilter",
          "type": "SamlFederationFilter",
          "config": {
            "assertionMapping": {
              "name": "cn",
              "surname": "sn"
            },
            "subjectMapping": "sp-subject-name",
            "redirectURI": "/home/saml-filter",
            "secretsProvider" : "KeyStoreSecretStore-1"
          }
        },
        {
          "name": "SetSamlHeaders",
          "type": "HeaderFilter",
          "config": {
            "messageType": "REQUEST",
            "add": {
              "x-saml-cn": [  "${toString(session.name)}" ],
              "x-saml-sn": [  "${toString(session.surname)}" ]
            }
          }
        }
      ],
      "handler": "ReverseProxyHandler"
    }
  }
}

Notice the following features of the route compared to saml-filter.json:

The SamlFederationHandler refers to the KeyStoreSecretStore to provide the keys for the signed and encrypted SAML assertions.
The secret IDs, sp.signing.sp and sp.decryption.sp, follow a naming convention based on the name of the service provider, sp.
The alias for the signing key corresponds to the PEM in keystore.jceks.

Restart PingGateway.

Test the setup:
1. In your browser’s privacy or incognito mode, go to https://sp.example.com:8443/home.
2. Log in to AM as user demo, password Ch4ng31t. The request is redirected to the sample application.

If a request returns an HTTP 414 URI Too Long error, consider the information in URI Too Long error.

PingGateway 2024.9

Signed/encrypted assertions