diff options
Diffstat (limited to 'id/server/idserverlib/src/main/java/at/gv/egovernment/moa/id/auth/builder/SignatureVerificationUtils.java')
| -rw-r--r-- | id/server/idserverlib/src/main/java/at/gv/egovernment/moa/id/auth/builder/SignatureVerificationUtils.java | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/id/server/idserverlib/src/main/java/at/gv/egovernment/moa/id/auth/builder/SignatureVerificationUtils.java b/id/server/idserverlib/src/main/java/at/gv/egovernment/moa/id/auth/builder/SignatureVerificationUtils.java new file mode 100644 index 000000000..ec94101d1 --- /dev/null +++ b/id/server/idserverlib/src/main/java/at/gv/egovernment/moa/id/auth/builder/SignatureVerificationUtils.java @@ -0,0 +1,172 @@ +/* + * Copyright 2014 Federal Chancellery Austria + * MOA-ID has been developed in a cooperation between BRZ, the Federal + * Chancellery Austria - ICT staff unit, and Graz University of Technology. + * + * Licensed under the EUPL, Version 1.1 or - as soon they will be approved by + * the European Commission - subsequent versions of the EUPL (the "Licence"); + * You may not use this work except in compliance with the Licence. + * You may obtain a copy of the Licence at: + * http://www.osor.eu/eupl/ + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the Licence is distributed on an "AS IS" basis, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the Licence for the specific language governing permissions and + * limitations under the Licence. + * + * This product combines work with different licenses. See the "NOTICE" text + * file for details on the various modules and licenses. + * The "NOTICE" text file is part of the distribution. Any derivative works + * that you distribute must include a readable copy of the "NOTICE" text file. + */ +package at.gv.egovernment.moa.id.auth.builder; + +import javax.xml.parsers.DocumentBuilder; +import javax.xml.parsers.DocumentBuilderFactory; + +import org.w3c.dom.Document; +import org.w3c.dom.Element; +import org.w3c.dom.Node; + +import at.gv.egovernment.moa.id.auth.data.VerifyXMLSignatureResponse; +import at.gv.egovernment.moa.id.auth.exception.BuildException; +import at.gv.egovernment.moa.id.auth.exception.ParseException; +import at.gv.egovernment.moa.id.auth.exception.ServiceException; +import at.gv.egovernment.moa.id.auth.invoke.SignatureVerificationInvoker; +import at.gv.egovernment.moa.id.auth.parser.VerifyXMLSignatureResponseParser; +import at.gv.egovernment.moa.id.commons.api.exceptions.MOAIDException; +import at.gv.egovernment.moa.logging.Logger; +import at.gv.egovernment.moa.util.Base64Utils; +import at.gv.egovernment.moa.util.Constants; + +/** + * @author tlenz + * + */ +public class SignatureVerificationUtils { + /** shortcut for XMLNS namespace URI */ + private static final String XMLNS_NS_URI = Constants.XMLNS_NS_URI; + /** shortcut for MOA namespace URI */ + private static final String MOA_NS_URI = Constants.MOA_NS_URI; + /** The DSIG-Prefix */ + private static final String DSIG = Constants.DSIG_PREFIX + ":"; + + /** The document containing the <code>VerifyXMLsignatureRequest</code> */ + private Document requestDoc_; + /** the <code>VerifyXMLsignatureRequest</code> root element */ + private Element requestElem_; + + + public SignatureVerificationUtils() throws BuildException { + try { + DocumentBuilder docBuilder = DocumentBuilderFactory.newInstance().newDocumentBuilder(); + requestDoc_ = docBuilder.newDocument(); + requestElem_ = requestDoc_.createElementNS(MOA_NS_URI, "VerifyXMLSignatureRequest"); + requestElem_.setAttributeNS(XMLNS_NS_URI, "xmlns", MOA_NS_URI); + requestElem_.setAttributeNS(XMLNS_NS_URI, "xmlns:" + Constants.DSIG_PREFIX, Constants.DSIG_NS_URI); + requestDoc_.appendChild(requestElem_); + + } catch (Throwable t) { + throw new BuildException( + "builder.00", + new Object[] {"VerifyXMLSignatureRequest", t.toString()}, + t); + } + } + + public VerifyXMLSignatureResponse verify(byte[] signature, String trustProfileID) throws MOAIDException { + try { + //build signature-verification request + Element domVerifyXMLSignatureRequest = build(signature, trustProfileID); + + //send signature-verification to MOA-SP + Element domVerifyXMLSignatureResponse = SignatureVerificationInvoker.getInstance() + .verifyXMLSignature(domVerifyXMLSignatureRequest); + + // parses the <VerifyXMLSignatureResponse> + VerifyXMLSignatureResponse verifyXMLSignatureResponse = new VerifyXMLSignatureResponseParser( + domVerifyXMLSignatureResponse).parseData(); + + return verifyXMLSignatureResponse; + + } catch (ParseException e) { + Logger.error("Build signature-verification request FAILED." ,e); + throw e; + + } catch (ServiceException e) { + Logger.error("MOA-SP signature verification FAILED." ,e); + throw e; + + } + + } + + /** + * Builds a <code><VerifyXMLSignatureRequest></code> + * from an IdentityLink with a known trustProfileID which + * has to exist in MOA-SP + * @param signature - The XML signature as byte[] + * @param trustProfileID - a preconfigured TrustProfile at MOA-SP + * + * @return Element - The complete request as Dom-Element + * + * @throws ParseException + */ + private Element build(byte[] signature, String trustProfileID) + throws ParseException + { + try { + // build the request + Element verifiySignatureInfoElem = + requestDoc_.createElementNS(MOA_NS_URI, "VerifySignatureInfo"); + requestElem_.appendChild(verifiySignatureInfoElem); + Element verifySignatureEnvironmentElem = + requestDoc_.createElementNS(MOA_NS_URI, "VerifySignatureEnvironment"); + verifiySignatureInfoElem.appendChild(verifySignatureEnvironmentElem); + Element base64ContentElem = requestDoc_.createElementNS(MOA_NS_URI, "Base64Content"); + verifySignatureEnvironmentElem.appendChild(base64ContentElem); + + // insert the base64 encoded signature + String base64EncodedAssertion = Base64Utils.encode(signature); + //replace all '\r' characters by no char. + StringBuffer replaced = new StringBuffer(); + for (int i = 0; i < base64EncodedAssertion.length(); i ++) { + char c = base64EncodedAssertion.charAt(i); + if (c != '\r') { + replaced.append(c); + } + } + base64EncodedAssertion = replaced.toString(); + Node base64Content = requestDoc_.createTextNode(base64EncodedAssertion); + base64ContentElem.appendChild(base64Content); + + // specify the signature location + Element verifySignatureLocationElem = + requestDoc_.createElementNS(MOA_NS_URI, "VerifySignatureLocation"); + verifiySignatureInfoElem.appendChild(verifySignatureLocationElem); + Node signatureLocation = requestDoc_.createTextNode(DSIG + "Signature"); + verifySignatureLocationElem.appendChild(signatureLocation); + + // signature manifest params + Element signatureManifestCheckParamsElem = + requestDoc_.createElementNS(MOA_NS_URI, "SignatureManifestCheckParams"); + requestElem_.appendChild(signatureManifestCheckParamsElem); + signatureManifestCheckParamsElem.setAttribute("ReturnReferenceInputData", "false"); + + Element returnHashInputDataElem = + requestDoc_.createElementNS(MOA_NS_URI, "ReturnHashInputData"); + requestElem_.appendChild(returnHashInputDataElem); + + //add trustProfileID + Element trustProfileIDElem = requestDoc_.createElementNS(MOA_NS_URI, "TrustProfileID"); + trustProfileIDElem.appendChild(requestDoc_.createTextNode(trustProfileID)); + requestElem_.appendChild(trustProfileIDElem); + } catch (Throwable t) { + throw new ParseException("builder.00", + new Object[] { "VerifyXMLSignatureRequest (IdentityLink)" }, t); + } + + return requestElem_; + } +} |