artifact binding + decryption of assertion

dmp-backend/web/pom.xml

@@ -170,6 +170,16 @@
             <artifactId>xmltooling</artifactId>
             <version>1.4.4</version>
         </dependency>
+        <dependency>
+            <groupId>jakarta.xml.soap</groupId>
+            <artifactId>jakarta.xml.soap-api</artifactId>
+            <version>3.0.0</version>
+        </dependency>
+        <dependency>
+            <groupId>com.sun.xml.messaging.saaj</groupId>
+            <artifactId>saaj-impl</artifactId>
+            <version>3.0.0-M2</version>
+        </dependency>
     </dependencies>
 
     <build>

dmp-backend/web/src/main/java/eu/eudat/logic/security/customproviders/ConfigurableProvider/entities/saml2/Saml2ConfigurableProvider.java

@@ -47,12 +47,38 @@ public class Saml2ConfigurableProvider extends ConfigurableProvider {
         }
     }
 
+    public enum KeyFormat {
+        JKS("JKS"), PKCS12("PKCS12");
+
+        private String type;
+        KeyFormat(String type) {
+            this.type = type;
+        }
+        @JsonValue
+        public String getType() { return type; }
+
+        public static KeyFormat fromType(String type) {
+            for (KeyFormat t: KeyFormat.values()) {
+                if (type.equals(t.getType())) {
+                    return t;
+                }
+            }
+            throw new IllegalArgumentException("Unsupported Keystore format " + type);
+        }
+    }
+
     private String spEntityId;
     private String idpEntityId;
     private String idpUrl;
+    private String idpArtifactUrl;
     private String idpMetadataUrl;
+    private boolean assertionEncrypted;
+    private KeyFormat keyFormat;
+    private String keyAlias;
+    private String credentialPath;
+    private String archivePassword;
+    private String keyPassword;
     private boolean responseSigned;
-    private String signedResponseCredential;
     private boolean assertionSigned;
     private SAML2UsingFormat usingFormat;
     private Map<String, SAML2AttributeType> attributeTypes;
@@ -81,6 +107,13 @@ public class Saml2ConfigurableProvider extends ConfigurableProvider {
         this.idpUrl = idpUrl;
     }
 
+    public String getIdpArtifactUrl() {
+        return idpArtifactUrl;
+    }
+    public void setIdpArtifactUrl(String idpArtifactUrl) {
+        this.idpArtifactUrl = idpArtifactUrl;
+    }
+
     public String getIdpMetadataUrl() {
         return idpMetadataUrl;
     }
@@ -88,6 +121,48 @@ public class Saml2ConfigurableProvider extends ConfigurableProvider {
         this.idpMetadataUrl = idpMetadataUrl;
     }
 
+    public boolean isAssertionEncrypted() {
+        return assertionEncrypted;
+    }
+    public void setAssertionEncrypted(boolean assertionEncrypted) {
+        this.assertionEncrypted = assertionEncrypted;
+    }
+
+    public KeyFormat getKeyFormat() {
+        return keyFormat;
+    }
+    public void setKeyFormat(KeyFormat keyFormat) {
+        this.keyFormat = keyFormat;
+    }
+
+    public String getKeyAlias() {
+        return keyAlias;
+    }
+    public void setKeyAlias(String keyAlias) {
+        this.keyAlias = keyAlias;
+    }
+
+    public String getCredentialPath() {
+        return credentialPath;
+    }
+    public void setCredentialPath(String credentialPath) {
+        this.credentialPath = credentialPath;
+    }
+
+    public String getArchivePassword() {
+        return archivePassword;
+    }
+    public void setArchivePassword(String archivePassword) {
+        this.archivePassword = archivePassword;
+    }
+
+    public String getKeyPassword() {
+        return keyPassword;
+    }
+    public void setKeyPassword(String keyPassword) {
+        this.keyPassword = keyPassword;
+    }
+
     public boolean isResponseSigned() {
         return responseSigned;
     }
@@ -95,13 +170,6 @@ public class Saml2ConfigurableProvider extends ConfigurableProvider {
         this.responseSigned = responseSigned;
     }
 
-    public String getSignedResponseCredential() {
-        return signedResponseCredential;
-    }
-    public void setSignedResponseCredential(String signedResponseCredential) {
-        this.signedResponseCredential = signedResponseCredential;
-    }
-
     public boolean isAssertionSigned() {
         return assertionSigned;
     }

dmp-backend/web/src/main/java/eu/eudat/logic/security/validators/configurableProvider/ConfigurableProviderTokenValidator.java

@@ -64,60 +64,60 @@ public class ConfigurableProviderTokenValidator implements TokenValidator {
 		}
 		else if (configurableProvider.getType().equals("saml2")) {
 
-			Response saml2Response = null;
+			Assertion saml2Assertion = null;
 			try {
-				Saml2ConfigurableProvider saml2ConfigurableProvider = (Saml2ConfigurableProvider)configurableProvider;
+				Saml2ConfigurableProvider saml2Provider = (Saml2ConfigurableProvider)configurableProvider;
-				saml2Response = Saml2SSOUtils.processResponse(credentials.getTicket(), saml2ConfigurableProvider.getIdpEntityId(), saml2ConfigurableProvider.getSpEntityId(),
+				if(saml2Provider.getBinding().equals("Redirect"))
-						saml2ConfigurableProvider.getIdpMetadataUrl(), saml2ConfigurableProvider.isResponseSigned(), saml2ConfigurableProvider.isAssertionSigned());
+					saml2Assertion = Saml2SSOUtils.processResponse(credentials.getTicket(), saml2Provider);
+				else if(saml2Provider.getBinding().equals("Artifact"))
+					saml2Assertion = Saml2SSOUtils.processArtifactResponse(credentials.getTicket(), saml2Provider);
 			} catch (Exception e) {
 				logger.error(e.getMessage(), e);
 			}
 
-			List<Assertion> assertions = saml2Response.getAssertions();
+			if(saml2Assertion == null)
-			if(assertions != null && !assertions.isEmpty()){
+				return null;
 
-				List<AttributeStatement> attributeStatements = assertions.get(0).getAttributeStatements();
+			List<AttributeStatement> attributeStatements = saml2Assertion.getAttributeStatements();
-				if(attributeStatements != null &&  !attributeStatements.isEmpty()){
+			if(attributeStatements != null &&  !attributeStatements.isEmpty()){
 
-					List<Attribute> attributes = attributeStatements.get(0).getAttributes();
+				List<Attribute> attributes = attributeStatements.get(0).getAttributes();
-					if(attributes != null && !attributes.isEmpty()){
+				if(attributes != null && !attributes.isEmpty()){
 
-						Saml2ConfigurableProvider.SAML2UsingFormat usingFormat = ((Saml2ConfigurableProvider)configurableProvider).getUsingFormat();
+					Saml2ConfigurableProvider.SAML2UsingFormat usingFormat = ((Saml2ConfigurableProvider)configurableProvider).getUsingFormat();
-						Map<String, String> attributeMapping = ((Saml2ConfigurableProvider)configurableProvider).getConfigurableUserFromAttributes();
+					Map<String, String> attributeMapping = ((Saml2ConfigurableProvider)configurableProvider).getConfigurableUserFromAttributes();
-						Map<String, Saml2ConfigurableProvider.SAML2AttributeType> attributeType = ((Saml2ConfigurableProvider)configurableProvider).getAttributeTypes();
+					Map<String, Saml2ConfigurableProvider.SAML2AttributeType> attributeType = ((Saml2ConfigurableProvider)configurableProvider).getAttributeTypes();
-						Map<String, Object> saml2User = new HashMap<>();
+					Map<String, Object> saml2User = new HashMap<>();
-						for(Attribute attribute: attributes){
+					for(Attribute attribute: attributes){
 
-							String attributeName = Saml2SSOUtils.getAttributeName(attribute, usingFormat);
+						String attributeName = Saml2SSOUtils.getAttributeName(attribute, usingFormat);
-							if(attributeName != null && attributeMapping.containsValue(attributeName)){
+						if(attributeName != null && attributeMapping.containsValue(attributeName)){
 
-								Saml2ConfigurableProvider.SAML2AttributeType attrType = attributeType.get(attributeName);
+							Saml2ConfigurableProvider.SAML2AttributeType attrType = attributeType.get(attributeName);
-								if(attribute.getAttributeValues() != null && !attribute.getAttributeValues().isEmpty() && attrType != null){
+							if(attribute.getAttributeValues() != null && !attribute.getAttributeValues().isEmpty() && attrType != null){
-									Object attributeValue = Saml2SSOUtils.getAttributeType(attribute.getAttributeValues().get(0), attrType);
+								Object attributeValue = Saml2SSOUtils.getAttributeType(attribute.getAttributeValues().get(0), attrType);
-									if(attributeValue != null) {
+								if(attributeValue != null) {
-										saml2User.put(attributeName, attributeValue);
+									saml2User.put(attributeName, attributeValue);
-									}
 								}
-
 							}
 
 						}
 
-						try{
-							String subjectNameId = assertions.get(0).getSubject().getNameID().getValue();
-							String userId = configurableLoginId + ": " + subjectNameId;
-							user.setId(userId);
-						} catch(NullPointerException e){
-							logger.error("Could not get Subject NameID value of assertion");
-							return null;
-						}
-						user.setEmail((String)saml2User.get(attributeMapping.get("email")));
-						user.setName((String)saml2User.get(attributeMapping.get("name")));
-						user.setProvider(credentials.getProvider());
-						user.setSecret(credentials.getTicket());
-
 					}
 
+					try{
+						String subjectNameId = saml2Assertion.getSubject().getNameID().getValue();
+						String userId = configurableLoginId + ": " + subjectNameId;
+						user.setId(userId);
+					} catch(NullPointerException e){
+						logger.error("Could not get Subject NameID value of assertion");
+						return null;
+					}
+					user.setEmail((String)saml2User.get(attributeMapping.get("email")));
+					user.setName((String)saml2User.get(attributeMapping.get("name")));
+					user.setProvider(credentials.getProvider());
+					user.setSecret(credentials.getTicket());
+
 				}
 
 			}

dmp-backend/web/src/main/java/eu/eudat/logic/security/validators/configurableProvider/Saml2SSOUtils.java

@@ -1,47 +1,85 @@
 package eu.eudat.logic.security.validators.configurableProvider;
 
 import eu.eudat.logic.security.customproviders.ConfigurableProvider.entities.saml2.Saml2ConfigurableProvider;
+import jakarta.xml.soap.*;
 import net.shibboleth.utilities.java.support.component.ComponentInitializationException;
 import net.shibboleth.utilities.java.support.resolver.CriteriaSet;
 import net.shibboleth.utilities.java.support.xml.BasicParserPool;
+import org.apache.commons.collections4.CollectionUtils;
+import org.apache.commons.lang3.StringUtils;
+import org.apache.http.HttpResponse;
+import org.apache.http.client.HttpClient;
+import org.apache.http.client.ResponseHandler;
+import org.apache.http.client.methods.HttpPost;
+import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
+import org.apache.http.conn.ssl.TrustSelfSignedStrategy;
+import org.apache.http.entity.ContentType;
+import org.apache.http.entity.StringEntity;
+import org.apache.http.impl.client.BasicResponseHandler;
+import org.apache.http.impl.client.CloseableHttpClient;
 import org.apache.http.impl.client.HttpClientBuilder;
+import org.apache.http.impl.client.HttpClients;
+import org.apache.http.ssl.SSLContextBuilder;
 import org.opensaml.core.config.ConfigurationService;
 import org.opensaml.core.config.InitializationException;
 import org.opensaml.core.config.InitializationService;
 import org.opensaml.core.criterion.EntityIdCriterion;
 import org.opensaml.core.xml.XMLObject;
+import org.opensaml.core.xml.XMLObjectBuilderFactory;
 import org.opensaml.core.xml.config.XMLObjectProviderRegistry;
-import org.opensaml.core.xml.io.Unmarshaller;
+import org.opensaml.core.xml.io.*;
-import org.opensaml.core.xml.io.UnmarshallerFactory;
-import org.opensaml.core.xml.io.UnmarshallingException;
 import org.opensaml.core.xml.schema.*;
+import org.opensaml.saml.common.SAMLObject;
+import org.opensaml.saml.common.SAMLObjectBuilder;
+import org.opensaml.saml.common.SAMLVersion;
 import org.opensaml.saml.common.xml.SAMLConstants;
 import org.opensaml.saml.criterion.EntityRoleCriterion;
 import org.opensaml.saml.criterion.ProtocolCriterion;
 import org.opensaml.saml.metadata.resolver.impl.HTTPMetadataResolver;
 import org.opensaml.saml.metadata.resolver.impl.PredicateRoleDescriptorResolver;
 import org.opensaml.saml.saml2.core.*;
+import org.opensaml.saml.saml2.encryption.Decrypter;
 import org.opensaml.saml.saml2.metadata.IDPSSODescriptor;
 import org.opensaml.saml.security.impl.MetadataCredentialResolver;
 import org.opensaml.security.credential.Credential;
+import org.opensaml.security.credential.CredentialSupport;
 import org.opensaml.security.credential.UsageType;
 import org.opensaml.security.criteria.UsageCriterion;
+import org.opensaml.security.x509.BasicX509Credential;
 import org.opensaml.security.x509.X509Credential;
+import org.opensaml.soap.common.SOAPObjectBuilder;
+import org.opensaml.soap.soap11.Body;
+import org.opensaml.soap.soap11.Envelope;
 import org.opensaml.xml.util.Base64;
 import org.opensaml.xmlsec.config.impl.DefaultSecurityConfigurationBootstrap;
+import org.opensaml.xmlsec.encryption.EncryptedKey;
 import org.opensaml.xmlsec.keyinfo.KeyInfoCredentialResolver;
+import org.opensaml.xmlsec.keyinfo.impl.StaticKeyInfoCredentialResolver;
 import org.opensaml.xmlsec.signature.support.SignatureValidator;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.w3c.dom.Document;
 import org.w3c.dom.Element;
+import org.w3c.dom.bootstrap.DOMImplementationRegistry;
+import org.w3c.dom.ls.DOMImplementationLS;
+import org.w3c.dom.ls.LSOutput;
+import org.w3c.dom.ls.LSSerializer;
 import org.xml.sax.SAXException;
 
+import javax.crypto.SecretKey;
 import javax.xml.parsers.DocumentBuilder;
 import javax.xml.parsers.DocumentBuilderFactory;
 import javax.xml.parsers.ParserConfigurationException;
+import javax.xml.transform.TransformerException;
+import javax.xml.transform.TransformerFactory;
+import javax.xml.transform.dom.DOMSource;
+import javax.xml.transform.stream.StreamResult;
 import java.io.*;
+import java.net.UnknownHostException;
 import java.nio.charset.StandardCharsets;
+import java.security.*;
+import java.security.cert.X509Certificate;
+import java.time.Instant;
 import java.util.*;
 import java.util.stream.Collectors;
 import java.util.zip.Inflater;
@@ -149,6 +187,26 @@ public class Saml2SSOUtils {
 
     }
 
+    private static String marshall(XMLObject xmlObject) throws Exception {
+
+        try {
+            MarshallerFactory marshallerFactory = registry.getMarshallerFactory();
+            Marshaller marshaller = marshallerFactory.getMarshaller(xmlObject);
+            Element element = marshaller.marshall(xmlObject);
+
+            ByteArrayOutputStream byteArrayOutputStrm = new ByteArrayOutputStream();
+            DOMImplementationRegistry registry = DOMImplementationRegistry.newInstance();
+            DOMImplementationLS impl = (DOMImplementationLS) registry.getDOMImplementation("LS");
+            LSSerializer writer = impl.createLSSerializer();
+            LSOutput output = impl.createLSOutput();
+            output.setByteStream(byteArrayOutputStrm);
+            writer.write(element, output);
+            return byteArrayOutputStrm.toString();
+        } catch (Exception e) {
+            throw new Exception("Error Serializing the SAML Response", e);
+        }
+    }
+
     private static XMLObject unmarshall(String saml2SSOString) throws Exception {
 
         DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance();
@@ -169,7 +227,234 @@ public class Saml2SSOUtils {
 
     }
 
-    public static Response processResponse(String saml2SSOResponse, String idPEntityId, String spEntityId, String metadataUrl, boolean responseSigned, boolean assertionSigned) throws Exception {
+    public static Assertion processArtifactResponse(String artifactString, Saml2ConfigurableProvider saml2Provider) throws Exception {
+
+        doBootstrap();
+        if (artifactString != null){
+            ArtifactResolve artifactResolve = generateArtifactResolveReq(artifactString, saml2Provider.getSpEntityId());
+            ArtifactResponse artifactResponse = sendArtifactResolveRequest(artifactResolve, saml2Provider.getIdpArtifactUrl());
+            Response saml2Response = (Response)artifactResponse.getMessage();
+            return processSSOResponse(saml2Response, saml2Provider);
+        }
+        else {
+            throw new Exception("Invalid SAML2 Artifact. SAML2 Artifact can not be null.");
+        }
+
+    }
+
+    private static ArtifactResolve generateArtifactResolveReq(String samlArtReceived, String spEntityId) {
+
+        ArtifactResolve artifactResolve = createArtifactResolveObject(samlArtReceived, spEntityId);
+//        if (config.isEnableArtifactResolveSigning()) {
+//            artifactResolve = signArtifactResolveReq(artifactResolve);
+//        }
+        return artifactResolve;
+
+    }
+
+    private static ArtifactResolve createArtifactResolveObject(String samlArtReceived, String spEntityId) {
+
+        XMLObjectBuilderFactory builderFactory = registry.getBuilderFactory();
+
+        SAMLObjectBuilder<ArtifactResolve> artifactResolveBuilder =
+                (SAMLObjectBuilder<ArtifactResolve>) builderFactory.getBuilder(ArtifactResolve.DEFAULT_ELEMENT_NAME);
+        ArtifactResolve artifactResolve = artifactResolveBuilder.buildObject();
+        artifactResolve.setVersion(SAMLVersion.VERSION_20);
+        artifactResolve.setID(UUID.randomUUID().toString());
+        artifactResolve.setIssueInstant(Instant.now());
+
+        SAMLObjectBuilder<Artifact> artifactBuilder =
+                (SAMLObjectBuilder<Artifact>) builderFactory.getBuilder(Artifact.DEFAULT_ELEMENT_NAME);
+        Artifact artifact = artifactBuilder.buildObject();
+        artifact.setValue(samlArtReceived);
+
+        SAMLObjectBuilder<Issuer> issuerBuilder = (SAMLObjectBuilder<Issuer>) builderFactory.getBuilder(Issuer.DEFAULT_ELEMENT_NAME);
+        Issuer issuer = issuerBuilder.buildObject();
+        issuer.setValue(spEntityId);
+
+        artifactResolve.setIssuer(issuer);
+        artifactResolve.setArtifact(artifact);
+
+        return artifactResolve;
+
+    }
+
+    private static ArtifactResponse sendArtifactResolveRequest(ArtifactResolve artifactResolve, String idpArtifactUrl) throws Exception {
+
+        Envelope envelope = buildSOAPMessage(artifactResolve);
+        String envelopeElement;
+        try {
+            envelopeElement = marshall(envelope);
+        } catch (Exception e) {
+            throw new Exception("Encountered error marshalling SOAP message with artifact " + "resolve, into its DOM representation", e);
+        }
+
+        String artifactResponseString = sendSOAP(envelopeElement, idpArtifactUrl);
+
+        ArtifactResponse artifactResponse = extractArtifactResponse(artifactResponseString);
+        validateArtifactResponse(artifactResolve, artifactResponse);
+        return artifactResponse;
+
+    }
+
+    private static Envelope buildSOAPMessage(SAMLObject samlMessage) {
+
+        XMLObjectBuilderFactory builderFactory = registry.getBuilderFactory();
+
+        SOAPObjectBuilder<Envelope> envBuilder = (SOAPObjectBuilder<Envelope>) builderFactory.getBuilder(
+                Envelope.DEFAULT_ELEMENT_NAME);
+        Envelope envelope = envBuilder.buildObject();
+
+        SOAPObjectBuilder<Body> bodyBuilder = (SOAPObjectBuilder<Body>) builderFactory.getBuilder(
+                Body.DEFAULT_ELEMENT_NAME);
+        Body body = bodyBuilder.buildObject();
+        body.getUnknownXMLObjects().add(samlMessage);
+        envelope.setBody(body);
+        return envelope;
+
+    }
+
+    private static String sendSOAP(String message, String idpArtifactUrl) throws Exception {
+
+        if (message == null) {
+            throw new Exception("Cannot send null SOAP message.");
+        }
+        if (idpArtifactUrl == null) {
+            throw new Exception("Cannot send SOAP message to null URL.");
+        }
+
+        StringBuilder soapResponse = new StringBuilder();
+        try {
+            HttpPost httpPost = new HttpPost(idpArtifactUrl);
+            setRequestProperties(idpArtifactUrl, message, httpPost);
+            HttpClient httpClient = getHttpClient();
+            HttpResponse httpResponse = httpClient.execute(httpPost);
+
+            int responseCode = httpResponse.getStatusLine().getStatusCode();
+            if (responseCode != 200) {
+                throw new Exception("Problem in communicating with: " + idpArtifactUrl + ". Received response: " + responseCode);
+            } else {
+                soapResponse.append(getResponseBody(httpResponse));
+            }
+        } catch (UnknownHostException e) {
+            throw new Exception("Unknown targeted host: " + idpArtifactUrl, e);
+        } catch (IOException e) {
+            throw new Exception("Could not open connection with host: " + idpArtifactUrl, e);
+        }
+        return soapResponse.toString();
+
+    }
+
+    private static void setRequestProperties(String idpArtifactUrl, String message, HttpPost httpPost) {
+
+        httpPost.addHeader("Content-Type", "text/xml; charset=utf-8");
+        httpPost.addHeader("Accept", "text/xml; charset=utf-8");
+        String sbSOAPAction = "\"" + idpArtifactUrl + "\"";
+        httpPost.addHeader("SOAPAction", sbSOAPAction);
+        httpPost.addHeader("Pragma", "no-cache");
+        httpPost.addHeader("Cache-Control", "no-cache, no-store");
+
+        httpPost.setEntity(new StringEntity(message, ContentType.create("text/xml", StandardCharsets.UTF_8)));
+
+    }
+
+    private static HttpClient getHttpClient() throws Exception {
+
+        CloseableHttpClient httpClient = null;
+        SSLContextBuilder builder = new SSLContextBuilder();
+        try {
+            builder.loadTrustMaterial(null, new TrustSelfSignedStrategy());
+            SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(
+                    builder.build());
+            httpClient = HttpClients.custom().setSSLSocketFactory(
+                    sslsf).build();
+        } catch (NoSuchAlgorithmException | KeyStoreException e) {
+            throw new Exception("Error while building trust store.", e);
+        } catch (KeyManagementException e) {
+            throw new Exception("Error while building socket factory.", e);
+        }
+
+        return httpClient;
+
+    }
+
+    private static String getResponseBody(HttpResponse response) throws Exception {
+
+        ResponseHandler<String> responseHandler = new BasicResponseHandler();
+        String responseBody;
+        try {
+            responseBody = responseHandler.handleResponse(response);
+        } catch (IOException e) {
+            throw new Exception("Error when retrieving the HTTP response body.", e);
+        }
+        return responseBody;
+
+    }
+
+    private static ArtifactResponse extractArtifactResponse(String artifactResponseString) throws Exception {
+
+        ArtifactResponse artifactResponse = null;
+        InputStream stream = new ByteArrayInputStream(artifactResponseString.getBytes(StandardCharsets.UTF_8));
+        try {
+            MessageFactory messageFactory = MessageFactory.newInstance();
+            SOAPMessage soapMessage = messageFactory.createMessage(new MimeHeaders(), stream);
+            SOAPBody soapBody = soapMessage.getSOAPBody();
+            Iterator<Node> iterator = soapBody.getChildElements();
+
+            while (iterator.hasNext()) {
+                SOAPBodyElement artifactResponseElement = (SOAPBodyElement) iterator.next();
+
+                if (StringUtils.equals(SAMLConstants.SAML20P_NS, artifactResponseElement.getNamespaceURI()) &&
+                        StringUtils.equals(ArtifactResponse.DEFAULT_ELEMENT_LOCAL_NAME,
+                                artifactResponseElement.getLocalName())) {
+
+                    DOMSource source = new DOMSource(artifactResponseElement);
+                    StringWriter stringResult = new StringWriter();
+                    TransformerFactory.newInstance().newTransformer().transform(
+                            source, new StreamResult(stringResult));
+                    artifactResponse = (ArtifactResponse) unmarshall(stringResult.toString());
+                } else {
+                    throw new Exception("Received invalid artifact response with nameSpaceURI: " +
+                            artifactResponseElement.getNamespaceURI() + " and localName: " +
+                            artifactResponseElement.getLocalName());
+                }
+            }
+        } catch (SOAPException | IOException | TransformerException e) {
+            throw new Exception("Didn't receive valid artifact response.", e);
+        } catch (Exception e) {
+            throw new Exception("Encountered error unmarshalling response into SAML2 object", e);
+        }
+        return artifactResponse;
+
+    }
+
+    private static void validateArtifactResponse(ArtifactResolve artifactResolve, ArtifactResponse artifactResponse) throws Exception {
+
+        if (artifactResponse == null) {
+            throw new Exception("Received artifact response message was null.");
+        }
+
+        String artifactResolveId = artifactResolve.getID();
+        String artifactResponseInResponseTo = artifactResponse.getInResponseTo();
+        if (!artifactResolveId.equals(artifactResponseInResponseTo)) {
+            throw new Exception("Artifact resolve ID: " + artifactResolveId + " is not equal to " +
+                    "artifact response InResponseTo : " + artifactResponseInResponseTo);
+        }
+
+        String artifactResponseStatus = artifactResponse.getStatus().getStatusCode().getValue();
+        if (!StatusCode.SUCCESS.equals(artifactResponseStatus)) {
+            throw new Exception("Unsuccessful artifact response with status: " +
+                    artifactResponseStatus);
+        }
+
+        SAMLObject message = artifactResponse.getMessage();
+        if (message == null) {
+            throw new Exception("No SAML response embedded into the artifact response.");
+        }
+
+    }
+
+    public static Assertion processResponse(String saml2SSOResponse, Saml2ConfigurableProvider saml2Provider) throws Exception {
 
         doBootstrap();
         if (saml2SSOResponse != null) {
@@ -178,38 +463,34 @@ public class Saml2SSOUtils {
             InflaterInputStream inflater = new InflaterInputStream(bytesIn, new Inflater(true));
             String response = new BufferedReader(new InputStreamReader(inflater, StandardCharsets.UTF_8))
 						.lines().collect(Collectors.joining("\n"));
-            return processSSOResponse(response, idPEntityId, spEntityId, metadataUrl, responseSigned, assertionSigned);
+            Response saml2Response = (Response) Saml2SSOUtils.unmarshall(response);
+            return processSSOResponse(saml2Response,  saml2Provider);
 
         } else {
             throw new Exception("Invalid SAML2 Response. SAML2 Response can not be null.");
         }
     }
 
-    private static Response processSSOResponse(String saml2SSOResponse, String idPEntityId, String spEntityId, String metadataUrl, boolean responseSigned, boolean assertionSigned) throws Exception {
+    private static Assertion processSSOResponse(Response saml2Response, Saml2ConfigurableProvider saml2Provider) throws Exception {
-
-        Response saml2Response = (Response) Saml2SSOUtils.unmarshall(saml2SSOResponse);
 
         Assertion assertion = null;
-//		if (config.isAssertionEncrypted()) {
+		if (saml2Provider.isAssertionEncrypted()) {
-//			List<EncryptedAssertion> encryptedAssertions = saml2Response.getEncryptedAssertions();
+			List<EncryptedAssertion> encryptedAssertions = saml2Response.getEncryptedAssertions();
-//			EncryptedAssertion encryptedAssertion = null;
+			EncryptedAssertion encryptedAssertion;
-//			if (!CollectionUtils.isEmpty(encryptedAssertions)) {
+			if (!CollectionUtils.isEmpty(encryptedAssertions)) {
-//				encryptedAssertion = encryptedAssertions.get(0);
+				encryptedAssertion = encryptedAssertions.get(0);
-//				try {
+				try {
-//					assertion = getDecryptedAssertion(encryptedAssertion);
+					assertion = getDecryptedAssertion(encryptedAssertion, saml2Provider);
-//				} catch (Exception e) {
+				} catch (Exception e) {
-//					if (log.isDebugEnabled()) {
+					throw new Exception("Unable to decrypt the SAML2 Assertion");
-//						log.debug("Assertion decryption failure : ", e);
+				}
-//					}
+			}
-//					throw new Exception("Unable to decrypt the SAML2 Assertion");
+		} else {
-//				}
+            List<Assertion> assertions = saml2Response.getAssertions();
-//			}
+            if (assertions != null && !assertions.isEmpty()) {
-//		} else {
+                assertion = assertions.get(0);
-        List<Assertion> assertions = saml2Response.getAssertions();
+            }
-        if (assertions != null && !assertions.isEmpty()) {
+		}
-            assertion = assertions.get(0);
-        }
-//		}
 		if (assertion == null) {
 			throw new Exception("SAML2 Assertion not found in the Response");
 		}
@@ -217,7 +498,7 @@ public class Saml2SSOUtils {
         String idPEntityIdValue = assertion.getIssuer().getValue();
         if (idPEntityIdValue == null || idPEntityIdValue.isEmpty()) {
             throw new Exception("SAML2 Response does not contain an Issuer value");
-        } else if (!idPEntityIdValue.equals(idPEntityId)) {
+        } else if (!idPEntityIdValue.equals(saml2Provider.getIdpEntityId())) {
             throw new Exception("SAML2 Response Issuer verification failed");
         }
 
@@ -230,9 +511,9 @@ public class Saml2SSOUtils {
             throw new Exception("SAML2 Response does not contain the name of the subject");
         }
 
-        validateAudienceRestriction(assertion, spEntityId);
+        validateAudienceRestriction(assertion, saml2Provider.getSpEntityId());
 
-        final HTTPMetadataResolver metadataResolver = new HTTPMetadataResolver(HttpClientBuilder.create().build(), metadataUrl);
+        final HTTPMetadataResolver metadataResolver = new HTTPMetadataResolver(HttpClientBuilder.create().build(), saml2Provider.getIdpMetadataUrl());
         metadataResolver.setId(metadataResolver.getClass().getCanonicalName());
         metadataResolver.setParserPool(parserPool);
         metadataResolver.initialize();
@@ -249,16 +530,40 @@ public class Saml2SSOUtils {
         criteriaSet.add(new UsageCriterion(UsageType.SIGNING));
         criteriaSet.add(new EntityRoleCriterion(IDPSSODescriptor.DEFAULT_ELEMENT_NAME));
         criteriaSet.add(new ProtocolCriterion(SAMLConstants.SAML20P_NS));
-        criteriaSet.add(new EntityIdCriterion(idPEntityId));
+        criteriaSet.add(new EntityIdCriterion(saml2Provider.getIdpEntityId()));
 
         Credential credential = metadataCredentialResolver.resolveSingle(criteriaSet);
 
-        validateSignature(saml2Response, assertion, responseSigned, null, assertionSigned, credential);
+        validateSignature(saml2Response, assertion, saml2Provider.isResponseSigned(), saml2Provider.isAssertionSigned(), credential);
 
-        return saml2Response;
+        return assertion;
 
     }
 
+    private static Assertion getDecryptedAssertion(EncryptedAssertion encryptedAssertion, Saml2ConfigurableProvider saml2Provider) throws Exception {
+
+        try {
+            KeyStore ks = (saml2Provider.getKeyFormat().getType().equals("JKS")) ? KeyStore.getInstance("JKS") : KeyStore.getInstance("PKCS12");
+            String archivePassword = saml2Provider.getArchivePassword();
+            char[] pwdArray = (archivePassword != null) ? archivePassword.toCharArray() : "changeit".toCharArray();
+            ks.load(new FileInputStream(saml2Provider.getCredentialPath()), pwdArray);
+            X509Certificate cert = (X509Certificate)ks.getCertificate(saml2Provider.getKeyAlias());
+            PrivateKey pk = (PrivateKey) ks.getKey(saml2Provider.getKeyAlias(), saml2Provider.getKeyPassword().toCharArray());
+            KeyInfoCredentialResolver keyResolver = new StaticKeyInfoCredentialResolver(
+                    new BasicX509Credential(cert, pk));
+            EncryptedKey key = encryptedAssertion.getEncryptedData().getKeyInfo().getEncryptedKeys().get(0);
+            Decrypter decrypter = new Decrypter(null, keyResolver, null);
+            SecretKey dkey = (SecretKey) decrypter.decryptKey(key, encryptedAssertion.getEncryptedData().getEncryptionMethod().getAlgorithm());
+            Credential shared = CredentialSupport.getSimpleCredential(dkey);
+            decrypter = new Decrypter(new StaticKeyInfoCredentialResolver(shared), null, null);
+            decrypter.setRootInNewDocument(true);
+            return decrypter.decrypt(encryptedAssertion);
+        } catch (Exception e) {
+            throw new Exception("Decrypted assertion error", e);
+
+        }
+    }
+
     private static void validateAudienceRestriction(Assertion assertion, String requiredSPEntityId) throws Exception {
 
         if (assertion != null) {
@@ -293,14 +598,14 @@ public class Saml2SSOUtils {
         }
     }
 
-    private static void validateSignature(Response response, Assertion assertion, Boolean isResponseSigned, X509Credential signedResponseCredential, Boolean isAssertionSigned, Credential assertionCredential) throws Exception {
+    private static void validateSignature(Response response, Assertion assertion, Boolean isResponseSigned, Boolean isAssertionSigned, Credential credential) throws Exception {
 
         if (isResponseSigned) {
             if (response.getSignature() == null) {
                 throw new Exception("SAML2 Response signing is enabled, but signature element not found in SAML2 Response element");
             } else {
                 try {
-                    SignatureValidator.validate(response.getSignature(), signedResponseCredential);
+                    SignatureValidator.validate(response.getSignature(), credential);
                 } catch (Exception e) {
                     throw new Exception("Signature validation failed for SAML2 Response");
                 }
@@ -311,7 +616,7 @@ public class Saml2SSOUtils {
                 throw new Exception("SAML2 Assertion signing is enabled, but signature element not found in SAML2 Assertion element");
             } else {
                 try {
-                    SignatureValidator.validate(assertion.getSignature(), assertionCredential);
+                    SignatureValidator.validate(assertion.getSignature(), credential);
                 } catch (Exception e) {
                     throw new Exception("Signature validation failed for SAML2 Assertion");
                 }

dmp-backend/web/src/main/resources/configurableLoginProviders.json

@@ -26,28 +26,28 @@
       "logoUrl": null
     },
     {
-      "enabled": true,
+      "enabled": false,
-      "type": "saml2",
+      "type": "",
-      "configurableLoginId": "keycloak-saml2",
+      "configurableLoginId": "",
-      "name": "keycloak",
+      "name": "",
-      "spEntityId": "argos",
+      "spEntityId": "",
-      "idpEntityId": "http://localhost:8080/auth/realms/master",
+      "idpEntityId": "",
-      "idpUrl": "http://localhost:8080/auth/realms/master/protocol/saml",
+      "idpUrl": "",
-      "idpMetadataUrl": "http://localhost:8080/auth/realms/master/protocol/saml/descriptor",
+      "idpArtifactUrl": "",
-      "responseSigned": false,
+      "idpMetadataUrl": "",
-      "signedResponseCredential": null,
+      "assertionEncrypted": null,
-      "assertionSigned": true,
+      "keyFormat": "",
-      "usingFormat": "friendly_name",
+      "keyAlias": "",
-      "configurableUserFromAttributes": {
+      "credentialPath": "",
-        "email": "email",
+      "archivePassword": "",
-        "name": "givenName"
+      "keyPassword": "",
-      },
+      "responseSigned": null,
-      "attributeTypes": {
+      "assertionSigned": null,
-        "email": "XSString",
+      "usingFormat": "",
-        "givenName": "XSString"
+      "configurableUserFromAttributes": null,
-      },
+      "attributeTypes": null,
-      "binding": "Redirect",
+      "binding": "",
-      "logoUrl": "https://upload.wikimedia.org/wikipedia/commons/2/29/Keycloak_Logo.png"
+      "logoUrl": ""
     }
   ]
 }