mirror of
https://github.com/nsacyber/HIRS.git
synced 2024-12-19 04:58:00 +00:00
Add validation for support RIM hash and base RIM signature.
This commit is contained in:
chubtub
parent
1b3abe465a
commit
24cf71642d
@ -4,6 +4,9 @@ import hirs.data.persist.BaseReferenceManifest;
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import hirs.data.persist.ReferenceManifest;
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import hirs.data.persist.SupportReferenceManifest;
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import hirs.data.persist.SwidResource;
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import hirs.data.persist.certificate.Certificate;
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import hirs.data.persist.certificate.CertificateAuthorityCredential;
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import hirs.persist.CertificateManager;
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import hirs.persist.DBManagerException;
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import hirs.persist.ReferenceManifestManager;
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import hirs.tpm.eventlog.TCGEventLog;
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@ -12,6 +15,7 @@ import hirs.attestationca.portal.page.PageController;
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import hirs.attestationca.portal.page.PageMessages;
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import hirs.attestationca.portal.page.params.ReferenceManifestDetailsPageParams;
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import java.io.ByteArrayInputStream;
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import java.io.IOException;
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import java.security.NoSuchAlgorithmException;
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import java.security.cert.CertificateException;
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@ -21,6 +25,7 @@ import java.util.List;
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import java.util.ArrayList;
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import java.util.UUID;
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import hirs.utils.ReferenceManifestValidator;
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import org.apache.logging.log4j.LogManager;
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import org.apache.logging.log4j.Logger;
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import org.springframework.beans.factory.annotation.Autowired;
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@ -38,6 +43,7 @@ public class ReferenceManifestDetailsPageController
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extends PageController<ReferenceManifestDetailsPageParams> {
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private final ReferenceManifestManager referenceManifestManager;
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private final CertificateManager certificateManager;
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private static final Logger LOGGER
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= LogManager.getLogger(ReferenceManifestDetailsPageController.class);
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@ -48,9 +54,11 @@ public class ReferenceManifestDetailsPageController
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*/
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@Autowired
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public ReferenceManifestDetailsPageController(
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final ReferenceManifestManager referenceManifestManager) {
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final ReferenceManifestManager referenceManifestManager,
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final CertificateManager certificateManager) {
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super(Page.RIM_DETAILS);
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this.referenceManifestManager = referenceManifestManager;
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this.certificateManager = certificateManager;
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}
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/**
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@ -80,7 +88,7 @@ public class ReferenceManifestDetailsPageController
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} else {
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try {
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UUID uuid = UUID.fromString(params.getId());
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data.putAll(getRimDetailInfo(uuid, referenceManifestManager));
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data.putAll(getRimDetailInfo(uuid, referenceManifestManager, certificateManager));
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} catch (IllegalArgumentException iaEx) {
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String uuidError = "Failed to parse ID from: " + params.getId();
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messages.addError(uuidError);
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@ -114,7 +122,8 @@ public class ReferenceManifestDetailsPageController
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* @throws CertificateException if a certificate doesn't parse.
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*/
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public static HashMap<String, Object> getRimDetailInfo(final UUID uuid,
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final ReferenceManifestManager referenceManifestManager) throws IOException,
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final ReferenceManifestManager referenceManifestManager,
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final CertificateManager certificateManager) throws IOException,
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CertificateException, NoSuchAlgorithmException {
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HashMap<String, Object> data = new HashMap<>();
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@ -183,11 +192,22 @@ public class ReferenceManifestDetailsPageController
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logProcessor = new TCGEventLog(support.getRimBytes());
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}
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}
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ReferenceManifestValidator rimValidator = new ReferenceManifestValidator(
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new ByteArrayInputStream(bRim.getRimBytes()));
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// going to have to pull the filename and grab that from the DB
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// to get the id to make the link
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for (SwidResource swidRes : resources) {
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if (support != null && swidRes.getName()
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.equals(support.getFileName())) {
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rimValidator.validateSupportRimHash(support.getRimBytes(),
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rimValidator.getDocument());
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if (rimValidator.isSupportRimValid()) {
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data.put("supportRimHashValid", true);
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} else {
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data.put("supportRimHashValid", false);
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}
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swidRes.setPcrValues(Arrays.asList(
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logProcessor.getExpectedPCRValues()));
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break;
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@ -198,6 +218,20 @@ public class ReferenceManifestDetailsPageController
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data.put("associatedRim", bRim.getAssociatedRim());
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data.put("swidFiles", resources);
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rimValidator.validateXmlSignature(rimValidator.getDocument());
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data.put("signatureValid", rimValidator.isSignatureValid());
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if (rimValidator.isSignatureValid()) {
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try {
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Certificate certificate =
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CertificateAuthorityCredential.select(certificateManager)
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.byEncodedPublicKey(rimValidator.getPublicKey().getEncoded())
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.getCertificate();
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data.put("issuerID", certificate.getId().toString());
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} catch (NullPointerException e) {
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LOGGER.info("Unable to get signing certificate link: " + e.getMessage());
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}
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}
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} else {
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SupportReferenceManifest sRim = SupportReferenceManifest
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.select(referenceManifestManager)
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@ -17,6 +17,12 @@
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</a>
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</jsp:attribute>
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<jsp:body>
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<c:set var="passIcon" value="${icons}/ic_checkbox_marked_circle_black_green_24dp.png"/>
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<c:set var="failIcon" value="${icons}/ic_error_red_24dp.png"/>
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<c:set var="signatureValidText" value="Signature valid!"/>
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<c:set var="signatureInvalidText" value="Signature not valid!"/>
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<c:set var="supportRimHashValidText" value="Support RIM hash valid!"/>
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<c:set var="supportRimHashInvalidText" value="Support RIM hash not valid!"/>
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<div id="certificate-details-page" class="container-fluid">
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<c:choose>
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<c:when test="${initialData.rimType=='Support'}">
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@ -171,6 +177,14 @@
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<c:choose>
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<c:when test="${not empty initialData.associatedRim}">
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<a href="${portal}/rim-details?id=${initialData.associatedRim}">${resource.getName()}</a>
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<c:choose>
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<c:when test="${not empty initialData.supportRimHashValid}">
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<img src="${passIcon}" title="${supportRimHashValidText}"/>
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</c:when>
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<c:otherwise>
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<img src="${failIcon}" title="${supportRimHashInvalidText}"/>
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</c:otherwise>
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</c:choose>
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</c:when>
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<c:otherwise>
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${resource.getName()}
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@ -237,6 +251,24 @@
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</div>
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</div>
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</div>
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<div class="row">
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<div class="col-md-1 col-md-offset-1"><span class="colHeader">Signature</span></div>
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<div id="signature" class="col col-md-8">
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<div>Validity: <span>
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<c:choose>
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<c:when test="${initialData.signatureValid}">
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<img src="${passIcon}" title="${signatureValidText}"/>
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<c:if test="${not empty initialData.issuerID}">
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<div><a href="${portal}/certificate-details?id=${initialData.issuerID}&type=certificateauthority">Signing certificate</a></div>
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</c:if>
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</c:when>
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<c:otherwise>
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<img src="${failIcon}" title="${signatureInvalidText}"/>
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</c:otherwise>
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</c:choose>
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</span></div>
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</div>
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</div>
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</c:otherwise>
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</c:choose>
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</div>
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@ -151,6 +151,7 @@ public class BaseReferenceManifest extends ReferenceManifest {
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public BaseReferenceManifest(final byte[] rimBytes) throws IOException {
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super(rimBytes);
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this.setRimType(BASE_RIM);
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this.setFileName("");
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SoftwareIdentity si = validateSwidTag(new ByteArrayInputStream(rimBytes));
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// begin parsing valid swid tag
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@ -0,0 +1,274 @@
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package hirs.utils;
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import org.apache.logging.log4j.LogManager;
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import org.apache.logging.log4j.Logger;
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import org.w3c.dom.Document;
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import org.w3c.dom.Element;
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import org.w3c.dom.NodeList;
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import org.xml.sax.SAXException;
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import javax.xml.XMLConstants;
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import javax.xml.bind.JAXBContext;
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import javax.xml.bind.JAXBException;
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import javax.xml.bind.UnmarshalException;
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import javax.xml.bind.Unmarshaller;
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import javax.xml.crypto.*;
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import javax.xml.crypto.dsig.XMLSignature;
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import javax.xml.crypto.dsig.XMLSignatureException;
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import javax.xml.crypto.dsig.XMLSignatureFactory;
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import javax.xml.crypto.dsig.dom.DOMValidateContext;
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import javax.xml.crypto.dsig.keyinfo.KeyInfo;
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import javax.xml.crypto.dsig.keyinfo.X509Data;
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import javax.xml.transform.*;
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import javax.xml.transform.dom.DOMResult;
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import javax.xml.transform.stream.StreamSource;
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import javax.xml.validation.Schema;
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import javax.xml.validation.SchemaFactory;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.UnsupportedEncodingException;
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import java.nio.file.Files;
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import java.nio.file.Paths;
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import java.security.Key;
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import java.security.MessageDigest;
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import java.security.NoSuchAlgorithmException;
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import java.security.PublicKey;
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import java.security.cert.X509Certificate;
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import java.util.Iterator;
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public class ReferenceManifestValidator {
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private static final String SIGNATURE_ALGORITHM_RSA_SHA256 =
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"http://www.w3.org/2001/04/xmldsig-more#rsa-sha256";
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private static final String SCHEMA_PACKAGE = "hirs.utils.xjc";
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private static final String SCHEMA_URL = "swid_schema.xsd";
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private static final String SCHEMA_LANGUAGE = XMLConstants.W3C_XML_SCHEMA_NS_URI;
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private static final String IDENTITY_TRANSFORM = "identity_transform.xslt";
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private static final String SHA256 = "SHA-256";
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private static final Logger LOGGER = LogManager.getLogger(ReferenceManifestValidator.class);
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private Unmarshaller unmarshaller;
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private PublicKey publicKey;
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private Document document;
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private boolean signatureValid, supportRimValid;
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public boolean isSignatureValid() {
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return signatureValid;
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}
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public boolean isSupportRimValid() {
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return supportRimValid;
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}
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public PublicKey getPublicKey() { return publicKey; }
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public Document getDocument() { return document; }
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public ReferenceManifestValidator() {}
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public ReferenceManifestValidator(InputStream input) {
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try {
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JAXBContext jaxbContext = JAXBContext.newInstance(SCHEMA_PACKAGE);
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unmarshaller = jaxbContext.createUnmarshaller();
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signatureValid = false;
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supportRimValid = false;
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publicKey = null;
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document = unmarshallSwidTag(removeXMLWhitespace(new StreamSource(input)));
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} catch (JAXBException e) {
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LOGGER.warn("Error initializing JAXBContext: " + e.getMessage());
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} catch (IOException e) {
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LOGGER.warn("Error during unmarshalling: " + e.getMessage());
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}
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}
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public void validateSupportRimHash(byte[] input, Document doc) {
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String calculatedHash = getHashValue(input, SHA256);
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Element file = (Element) doc.getElementsByTagName("File").item(0);
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LOGGER.info("Calculated hash: " + calculatedHash
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+ ", actual: " + file.getAttribute("SHA256:hash"));
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if (file.getAttribute("SHA256:hash").equals(calculatedHash)) {
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supportRimValid = true;
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} else {
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supportRimValid = false;
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}
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}
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/**
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* This method validates the signature block in the Document and stores the
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* result for public access.
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*
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* @param doc the xml data in Document form.
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*/
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public void validateXmlSignature(Document doc) throws IOException {
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signatureValid = validateSignedXMLDocument(doc);
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}
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private String getHashValue(byte[] input, String sha) {
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String resultString = null;
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try {
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MessageDigest md = MessageDigest.getInstance(sha);
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byte[] bytes = md.digest(input);
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StringBuilder sb = new StringBuilder();
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for (int i = 0; i < bytes.length; i++) {
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sb.append(Integer.toString((bytes[i] & 0xff) + 0x100, 16).substring(1));
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}
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resultString = sb.toString();
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} catch (NoSuchAlgorithmException grex) {
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LOGGER.warn(grex.getMessage());
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}
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return resultString;
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}
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/**
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* This method validates a Document with a signature element.
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*
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* @param doc
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*/
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private boolean validateSignedXMLDocument(Document doc) {
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DOMValidateContext context;
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boolean isValid = false;
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try {
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NodeList nodes = doc.getElementsByTagNameNS(XMLSignature.XMLNS, "Signature");
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if (nodes.getLength() == 0) {
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throw new Exception("Signature element not found!");
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}
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NodeList embeddedCert = doc.getElementsByTagName("X509Data");
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if (embeddedCert.getLength() > 0) {
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X509KeySelector keySelector = new ReferenceManifestValidator.X509KeySelector();
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context = new DOMValidateContext(keySelector, nodes.item(0));
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XMLSignatureFactory sigFactory = XMLSignatureFactory.getInstance("DOM");
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XMLSignature signature = sigFactory.unmarshalXMLSignature(context);
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isValid = signature.validate(context);
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publicKey = keySelector.getPublicKey();
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} else {
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LOGGER.info("Signing certificate not found for validation!");
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}
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} catch (MarshalException | XMLSignatureException e) {
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LOGGER.warn(e.getMessage());
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} catch (Exception e) {
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LOGGER.warn(e.getMessage());
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LOGGER.info(e.getMessage());
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}
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return isValid;
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}
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public class X509KeySelector extends KeySelector {
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private PublicKey publicKey;
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public KeySelectorResult select(KeyInfo keyinfo,
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KeySelector.Purpose purpose,
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AlgorithmMethod algorithm,
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XMLCryptoContext context) throws KeySelectorException {
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Iterator keyinfoItr = keyinfo.getContent().iterator();
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while(keyinfoItr.hasNext()) {
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XMLStructure element = (XMLStructure) keyinfoItr.next();
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if (element instanceof X509Data) {
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X509Data data = (X509Data) element;
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Iterator dataItr = data.getContent().iterator();
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while (dataItr.hasNext()) {
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Object object = dataItr.next();
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if (object instanceof X509Certificate) {
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publicKey = ((X509Certificate) object).getPublicKey();
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if (areAlgorithmsEqual(algorithm.getAlgorithm(), publicKey.getAlgorithm())) {
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return new ReferenceManifestValidator.X509KeySelector.RIMKeySelectorResult(publicKey);
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}
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}
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}
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}
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}
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throw new KeySelectorException("No key found!");
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}
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public boolean areAlgorithmsEqual(String uri, String name) {
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if (uri.equals(SIGNATURE_ALGORITHM_RSA_SHA256) && name.equalsIgnoreCase("RSA")) {
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return true;
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} else {
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return false;
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}
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}
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public PublicKey getPublicKey() {
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return publicKey;
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}
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private class RIMKeySelectorResult implements KeySelectorResult {
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private Key key;
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public RIMKeySelectorResult(Key key) {
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this.key = key;
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}
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public Key getKey() {
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return key;
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}
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}
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}
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/**
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* This method unmarshalls the swidtag found at [path] into a Document object
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* and validates it according to the schema.
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*
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* @param doc of the input swidtag.
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* @return document validated against the schema.
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*/
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private Document unmarshallSwidTag(Document doc) {
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InputStream is = null;
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try {
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is = ReferenceManifestValidator.class
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.getClassLoader().getResourceAsStream(SCHEMA_URL);
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SchemaFactory schemaFactory = SchemaFactory.newInstance(SCHEMA_LANGUAGE);
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Schema schema = schemaFactory.newSchema(new StreamSource(is));
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unmarshaller.setSchema(schema);
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unmarshaller.unmarshal(doc);
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} catch (SAXException e) {
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LOGGER.warn("Error setting schema for validation!");
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} catch (UnmarshalException e) {
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LOGGER.warn("Error validating swidtag file!");
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} catch (IllegalArgumentException e) {
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LOGGER.warn("Input file empty.");
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} catch (JAXBException e) {
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e.printStackTrace();
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} finally {
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if (is != null) {
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try {
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is.close();
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} catch (IOException e) {
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LOGGER.warn("Error closing input stream");
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}
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}
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}
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return doc;
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}
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/**
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* This method strips all whitespace from an xml file, including indents and spaces
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* added for human-readability.
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* @param source of the input xml.
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* @return Document representation of the xml.
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*/
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private Document removeXMLWhitespace(StreamSource source) throws IOException {
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TransformerFactory tf = TransformerFactory.newInstance();
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Source identitySource = new StreamSource(
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ReferenceManifestValidator.class.getClassLoader()
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.getResourceAsStream(IDENTITY_TRANSFORM));
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Document doc = null;
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try {
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Transformer transformer = tf.newTransformer(identitySource);
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DOMResult result = new DOMResult();
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transformer.transform(source, result);
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doc = (Document) result.getNode();
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} catch (TransformerConfigurationException e) {
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LOGGER.warn("Error configuring transformer!");
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e.printStackTrace();
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} catch (TransformerException e) {
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LOGGER.warn("Error transforming input!");
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e.printStackTrace();
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}
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return doc;
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}
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}
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10
HIRS_Utils/src/main/resources/identity_transform.xslt
Normal file
10
HIRS_Utils/src/main/resources/identity_transform.xslt
Normal file
@ -0,0 +1,10 @@
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<?xml version="1.0"?>
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<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
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<xsl:output indent="no" />
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<xsl:strip-space elements="*"/>
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<xsl:template match="@*|node()">
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<xsl:copy>
|
||||
<xsl:apply-templates select="@*|node()"/>
|
||||
</xsl:copy>
|
||||
</xsl:template>
|
||||
</xsl:stylesheet>
|
||||
Loading…
Reference in New Issue
Block a user