2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright (C) 2019, Nordix Foundation. All rights reserved.
6 * ================================================================================
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 * ============LICENSE_END=========================================================
20 package org.openecomp.sdc.vendorsoftwareproduct.security;
22 import com.google.common.collect.ImmutableSet;
23 import java.io.ByteArrayInputStream;
25 import java.io.FileInputStream;
26 import java.io.FileNotFoundException;
27 import java.io.IOException;
28 import java.io.InputStream;
29 import java.io.InputStreamReader;
30 import java.security.GeneralSecurityException;
31 import java.security.InvalidAlgorithmParameterException;
32 import java.security.NoSuchAlgorithmException;
33 import java.security.NoSuchProviderException;
34 import java.security.Security;
35 import java.security.cert.CertPathBuilder;
36 import java.security.cert.CertStore;
37 import java.security.cert.CertificateException;
38 import java.security.cert.CertificateExpiredException;
39 import java.security.cert.CertificateFactory;
40 import java.security.cert.CertificateNotYetValidException;
41 import java.security.cert.CollectionCertStoreParameters;
42 import java.security.cert.PKIXBuilderParameters;
43 import java.security.cert.PKIXCertPathBuilderResult;
44 import java.security.cert.TrustAnchor;
45 import java.security.cert.X509CertSelector;
46 import java.security.cert.X509Certificate;
47 import java.util.Collection;
48 import java.util.HashSet;
49 import java.util.Optional;
51 import java.util.function.Predicate;
52 import java.util.stream.Collectors;
53 import java.util.stream.Stream;
54 import org.bouncycastle.asn1.cms.ContentInfo;
55 import org.bouncycastle.cert.X509CertificateHolder;
56 import org.bouncycastle.cms.CMSException;
57 import org.bouncycastle.cms.CMSProcessableByteArray;
58 import org.bouncycastle.cms.CMSSignedData;
59 import org.bouncycastle.cms.CMSTypedData;
60 import org.bouncycastle.cms.SignerInformation;
61 import org.bouncycastle.cms.jcajce.JcaSimpleSignerInfoVerifierBuilder;
62 import org.bouncycastle.jce.provider.BouncyCastleProvider;
63 import org.bouncycastle.openssl.PEMParser;
64 import org.bouncycastle.operator.OperatorCreationException;
65 import org.openecomp.sdc.logging.api.Logger;
66 import org.openecomp.sdc.logging.api.LoggerFactory;
69 * This is temporary solution. When AAF provides functionality for verifying trustedCertificates, this class should be reviewed Class is responsible
70 * for providing root trustedCertificates from configured location in onboarding container.
72 public class SecurityManager {
74 private static final String CERTIFICATE_DEFAULT_LOCATION = "cert";
75 public static final Set<String> ALLOWED_SIGNATURE_EXTENSIONS = ImmutableSet.of("cms");
76 public static final Set<String> ALLOWED_CERTIFICATE_EXTENSIONS = ImmutableSet.of("cert", "crt");
77 private Logger logger = LoggerFactory.getLogger(SecurityManager.class);
78 private Set<X509Certificate> trustedCertificates = new HashSet<>();
79 private Set<X509Certificate> trustedCertificatesFromPackage = new HashSet<>();
80 private File certificateDirectory;
83 if (Security.getProvider(BouncyCastleProvider.PROVIDER_NAME) == null) {
84 Security.addProvider(new BouncyCastleProvider());
88 private SecurityManager() {
89 certificateDirectory = this.getcertDirectory(System.getenv("SDC_CERT_DIR"));
92 // Package level constructor use in tests to avoid power mock
93 SecurityManager(String sdcCertDir) {
94 certificateDirectory = this.getcertDirectory(sdcCertDir);
97 public static SecurityManager getInstance() {
98 return SecurityManagerInstanceHolder.instance;
102 * Initialization on demand class / synchronized singleton pattern.
104 private static class SecurityManagerInstanceHolder {
106 private static final SecurityManager instance = new SecurityManager();
110 * Checks the configured location for available trustedCertificates
112 * @return set of trustedCertificates
113 * @throws SecurityManagerException
115 public Set<X509Certificate> getTrustedCertificates() throws SecurityManagerException, FileNotFoundException {
116 //if file number in certificate directory changed reload certs
117 String[] certFiles = certificateDirectory.list();
118 if (certFiles == null) {
119 logger.error("Certificate directory is empty!");
120 return ImmutableSet.copyOf(new HashSet<>());
122 if (trustedCertificates.size() != certFiles.length) {
123 trustedCertificates = new HashSet<>();
124 processCertificateDir();
126 if (!trustedCertificatesFromPackage.isEmpty()) {
127 return Stream.concat(trustedCertificatesFromPackage.stream(), trustedCertificates.stream()).collect(Collectors.toUnmodifiableSet());
129 return ImmutableSet.copyOf(trustedCertificates);
133 * Cleans certificate collection
135 public void cleanTrustedCertificates() {
136 trustedCertificates.clear();
140 * Verifies if packaged signed with trusted certificate
142 * @param messageSyntaxSignature - signature data in cms format
143 * @param packageCert - package certificate if not part of cms signature, can be null
144 * @param innerPackageFile data package signed with cms signature
145 * @return true if signature verified
146 * @throws SecurityManagerException
148 public boolean verifySignedData(final byte[] messageSyntaxSignature, final byte[] packageCert, final byte[] innerPackageFile)
149 throws SecurityManagerException {
150 try (ByteArrayInputStream signatureStream = new ByteArrayInputStream(messageSyntaxSignature); final PEMParser pemParser = new PEMParser(
151 new InputStreamReader(signatureStream))) {
152 final Object parsedObject = pemParser.readObject();
153 if (!(parsedObject instanceof ContentInfo)) {
154 throw new SecurityManagerException("Signature is not recognized");
156 final ContentInfo signature = ContentInfo.getInstance(parsedObject);
157 final CMSTypedData signedContent = new CMSProcessableByteArray(innerPackageFile);
158 final CMSSignedData signedData = new CMSSignedData(signedContent, signature);
159 final Collection<SignerInformation> signers = signedData.getSignerInfos().getSigners();
160 final SignerInformation firstSigner = signers.iterator().next();
161 final X509Certificate cert;
162 Collection<X509CertificateHolder> certs;
163 if (packageCert == null) {
164 certs = signedData.getCertificates().getMatches(null);
165 cert = readSignCert(certs, firstSigner)
166 .orElseThrow(() -> new SecurityManagerException("No certificate found in cms signature that should contain one!"));
168 certs = parseCertsFromPem(packageCert);
169 cert = readSignCert(certs, firstSigner)
170 .orElseThrow(() -> new SecurityManagerException("No matching certificate found in certificate file that should contain one!"));
172 trustedCertificatesFromPackage = readTrustedCerts(certs, firstSigner);
173 if (verifyCertificate(cert, getTrustedCertificates()) == null) {
176 return firstSigner.verify(new JcaSimpleSignerInfoVerifierBuilder().build(cert));
177 } catch (OperatorCreationException | IOException | CMSException e) {
178 logger.error(e.getMessage(), e);
179 throw new SecurityManagerException("Unexpected error occurred during signature validation!", e);
180 } catch (GeneralSecurityException e) {
181 throw new SecurityManagerException("Could not verify signature!", e);
185 private Optional<X509Certificate> readSignCert(final Collection<X509CertificateHolder> certs, final SignerInformation firstSigner) {
186 return certs.stream().filter(crt -> firstSigner.getSID().match(crt)).findAny().map(this::loadCertificate);
189 private Set<X509Certificate> readTrustedCerts(final Collection<X509CertificateHolder> certs, final SignerInformation firstSigner) {
190 return certs.stream().filter(crt -> !firstSigner.getSID().match(crt)).map(this::loadCertificate).filter(Predicate.not(this::isSelfSigned))
191 .collect(Collectors.toSet());
194 private Set<X509CertificateHolder> parseCertsFromPem(final byte[] packageCert) throws IOException {
195 final ByteArrayInputStream packageCertStream = new ByteArrayInputStream(packageCert);
196 final PEMParser pemParser = new PEMParser(new InputStreamReader(packageCertStream));
197 Object readObject = pemParser.readObject();
198 Set<X509CertificateHolder> allCerts = new HashSet<>();
199 while (readObject != null) {
200 if (readObject instanceof X509CertificateHolder) {
201 allCerts.add((X509CertificateHolder) readObject);
203 readObject = pemParser.readObject();
208 private void processCertificateDir() throws SecurityManagerException, FileNotFoundException {
209 if (!certificateDirectory.exists() || !certificateDirectory.isDirectory()) {
210 logger.error("Issue with certificate directory, check if exists!");
213 File[] files = certificateDirectory.listFiles();
215 logger.error("Certificate directory is empty!");
218 for (File f : files) {
219 trustedCertificates.add(loadCertificate(f));
223 private File getcertDirectory(String sdcCertDir) {
224 String certDirLocation = sdcCertDir;
225 if (certDirLocation == null) {
226 certDirLocation = CERTIFICATE_DEFAULT_LOCATION;
228 return new File(certDirLocation);
231 private X509Certificate loadCertificate(File certFile) throws SecurityManagerException {
232 try (FileInputStream fi = new FileInputStream(certFile)) {
233 return loadCertificateFactory(fi);
234 } catch (IOException e) {
235 throw new SecurityManagerException("Error during loading Certificate from file!", e);
239 private X509Certificate loadCertificate(X509CertificateHolder cert) {
241 return loadCertificateFactory(new ByteArrayInputStream(cert.getEncoded()));
242 } catch (IOException | SecurityManagerException e) {
243 throw new RuntimeException("Error during loading Certificate from bytes!", e);
247 private X509Certificate loadCertificateFactory(InputStream in) throws SecurityManagerException {
249 CertificateFactory factory = CertificateFactory.getInstance("X.509");
250 return (X509Certificate) factory.generateCertificate(in);
251 } catch (CertificateException e) {
252 throw new SecurityManagerException("Error during loading Certificate from bytes!", e);
256 private PKIXCertPathBuilderResult verifyCertificate(X509Certificate cert, Set<X509Certificate> additionalCerts)
257 throws GeneralSecurityException, SecurityManagerException {
259 throw new SecurityManagerException("The certificate is empty!");
261 if (isExpired(cert)) {
262 throw new SecurityManagerException("The certificate expired on: " + cert.getNotAfter());
264 if (isSelfSigned(cert)) {
265 throw new SecurityManagerException("The certificate is self-signed.");
267 Set<X509Certificate> trustedRootCerts = new HashSet<>();
268 Set<X509Certificate> intermediateCerts = new HashSet<>();
269 for (X509Certificate additionalCert : additionalCerts) {
270 if (isSelfSigned(additionalCert)) {
271 trustedRootCerts.add(additionalCert);
273 intermediateCerts.add(additionalCert);
276 return verifyCertificate(cert, trustedRootCerts, intermediateCerts);
279 private PKIXCertPathBuilderResult verifyCertificate(X509Certificate cert, Set<X509Certificate> allTrustedRootCerts,
280 Set<X509Certificate> allIntermediateCerts) throws GeneralSecurityException {
281 // Create the selector that specifies the starting certificate
282 X509CertSelector selector = new X509CertSelector();
283 selector.setCertificate(cert);
284 // Create the trust anchors (set of root CA certificates)
285 Set<TrustAnchor> trustAnchors = new HashSet<>();
286 for (X509Certificate trustedRootCert : allTrustedRootCerts) {
287 trustAnchors.add(new TrustAnchor(trustedRootCert, null));
289 // Configure the PKIX certificate builder algorithm parameters
290 PKIXBuilderParameters pkixParams;
292 pkixParams = new PKIXBuilderParameters(trustAnchors, selector);
293 } catch (InvalidAlgorithmParameterException ex) {
294 throw new InvalidAlgorithmParameterException("No root CA has been found for this certificate", ex);
296 // Not supporting CRL checks for now
297 pkixParams.setRevocationEnabled(false);
298 Set<X509Certificate> certSet = new HashSet<>();
300 pkixParams.addCertStore(createCertStore(certSet));
301 pkixParams.addCertStore(createCertStore(allIntermediateCerts));
302 pkixParams.addCertStore(createCertStore(allTrustedRootCerts));
303 CertPathBuilder builder = CertPathBuilder.getInstance(CertPathBuilder.getDefaultType(), BouncyCastleProvider.PROVIDER_NAME);
304 return (PKIXCertPathBuilderResult) builder.build(pkixParams);
307 private CertStore createCertStore(Set<X509Certificate> certificateSet)
308 throws InvalidAlgorithmParameterException, NoSuchAlgorithmException, NoSuchProviderException {
309 return CertStore.getInstance("Collection", new CollectionCertStoreParameters(certificateSet), BouncyCastleProvider.PROVIDER_NAME);
312 private boolean isExpired(X509Certificate cert) {
314 cert.checkValidity();
315 } catch (CertificateExpiredException e) {
316 logger.error(e.getMessage(), e);
318 } catch (CertificateNotYetValidException e) {
319 logger.error(e.getMessage(), e);
325 private boolean isSelfSigned(X509Certificate cert) {
326 return cert.getIssuerDN().equals(cert.getSubjectDN());