ETSI SOL007 3.3.1 package security option 2

Change-Id: I4e021c517449e6ddf11571c02d0b4bdbc93e7c1e
Issue-ID: SDC-2614
Signed-off-by: andre.schmid <andre.schmid@est.tech>

15 files changed, 759 insertions, 0 deletions

diff --git a/common-be/src/main/java/org/openecomp/sdc/be/csar/security/CertificateManagerImpl.java b/common-be/src/main/java/org/openecomp/sdc/be/csar/security/CertificateManagerImpl.java
new file mode 100644
index 0000000000..9ec8ea864e
--- /dev/null
+++ b/common-be/src/main/java/org/openecomp/sdc/be/csar/security/CertificateManagerImpl.java
@@ -0,0 +1,167 @@
+/*
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.openecomp.sdc.be.csar.security;
+
+import java.io.File;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.security.Key;
+import java.security.Security;
+import java.security.cert.Certificate;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Optional;
+import java.util.stream.Collectors;
+import org.apache.commons.io.FilenameUtils;
+import org.bouncycastle.jce.provider.BouncyCastleProvider;
+import org.openecomp.sdc.be.csar.security.api.CertificateManager;
+import org.openecomp.sdc.be.csar.security.api.CertificateReader;
+import org.openecomp.sdc.be.csar.security.api.PrivateKeyReader;
+import org.openecomp.sdc.be.csar.security.api.model.CertificateInfo;
+import org.openecomp.sdc.be.csar.security.exception.CertificateNotFoundException;
+import org.openecomp.sdc.be.csar.security.model.CertificateInfoImpl;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.core.env.Environment;
+import org.springframework.stereotype.Component;
+
+@Component
+public class CertificateManagerImpl implements CertificateManager {
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(CertificateManagerImpl.class);
+
+    private final PrivateKeyReader privateKeyReader;
+    private final CertificateReader certificateReader;
+    private final Environment environment;
+
+    private Path certificateDirectoryPath;
+    private File certificateDirectory;
+    private final Map<String, CertificateInfo> certificateMap = new HashMap<>();
+
+    public static final String CERT_DIR_ENV_VARIABLE = "SDC_CERT_DIR";
+
+    public CertificateManagerImpl(final PrivateKeyReader privateKeyReader,
+                                  final CertificateReader certificateReader,
+                                  final Environment environment) {
+        this.certificateReader = certificateReader;
+        this.privateKeyReader = privateKeyReader;
+        this.environment = environment;
+        init();
+    }
+
+    private void init() {
+        if (Security.getProvider(BouncyCastleProvider.PROVIDER_NAME) == null) {
+            Security.addProvider(new BouncyCastleProvider());
+        }
+
+        final String certificateDir = environment.getProperty(CERT_DIR_ENV_VARIABLE);
+        if (certificateDir == null) {
+            LOGGER.warn("Environment variable '{}' was not provided. Could not load certificates.", CERT_DIR_ENV_VARIABLE);
+            return;
+        }
+        try {
+            this.certificateDirectoryPath = Paths.get(certificateDir);
+        } catch (final Exception e) {
+            LOGGER.error("Invalid path '{}' provided in the environment variable '{}'. Could not load certificates.",
+                certificateDir, CERT_DIR_ENV_VARIABLE, e);
+            return;
+        }
+        try {
+            loadCertificateDirectory();
+        } catch (final Exception e) {
+            LOGGER.error("Could not load certificate directory", e);
+            return;
+        }
+        try {
+            loadCertificates();
+        } catch (final Exception e) {
+            LOGGER.error("Could not load certificates", e);
+        }
+    }
+
+    private void loadCertificates() {
+        final File[] files = certificateDirectory.listFiles();
+        if (files == null || files.length == 0) {
+            LOGGER.warn("Certificate directory is empty. No trusted certificate found.");
+            return;
+        }
+
+        final List<File> certFileList = Arrays.stream(files)
+            .filter(file -> "cert".equals(FilenameUtils.getExtension(file.getName())))
+            .collect(Collectors.toList());
+        final List<File> keyFileList = Arrays.stream(files)
+            .filter(file -> "key".equals(FilenameUtils.getExtension(file.getName())))
+            .collect(Collectors.toList());
+
+        if (certFileList.isEmpty()) {
+            LOGGER.error("Certificate directory is empty. No trusted certificate found.");
+            return;
+        }
+
+        certFileList.forEach(certFile -> {
+            final String baseFileName = FilenameUtils.getBaseName(certFile.getName());
+            final Certificate certificate = loadCertificate(certFile);
+            final Optional<File> keyFileOptional = keyFileList.stream().filter(
+                keyFile1 -> FilenameUtils.getBaseName(keyFile1.getName())
+                    .equals(baseFileName)).findFirst();
+            keyFileOptional.ifPresentOrElse(
+                keyFile -> {
+                    final CertificateInfoImpl certificateInfo =
+                        new CertificateInfoImpl(certFile, certificate, keyFile, loadPrivateKey(keyFile));
+                    if (certificateInfo.isValid()) {
+                        certificateMap.put(baseFileName, certificateInfo);
+                    }
+                },
+                () -> {
+                    final CertificateInfoImpl certificateInfo = new CertificateInfoImpl(certFile, certificate);
+                    if (certificateInfo.isValid()) {
+                        certificateMap.put(baseFileName, new CertificateInfoImpl(certFile, certificate));
+                    }
+                }
+            );
+        });
+    }
+
+    private void loadCertificateDirectory() {
+        final File file = certificateDirectoryPath.toFile();
+        if (!file.exists() || !file.isDirectory()) {
+            final String errorMsg =
+                String.format("Provided certificate path '%s' is not a directory or does not exist",
+                    certificateDirectoryPath);
+            throw new CertificateNotFoundException(errorMsg);
+        }
+        this.certificateDirectory = file;
+    }
+
+    private Certificate loadCertificate(final File certFile) {
+        return certificateReader.loadCertificate(certFile);
+    }
+
+    private Key loadPrivateKey(final File privateKeyFile) {
+        return privateKeyReader.loadPrivateKey(privateKeyFile);
+    }
+
+    @Override
+    public Optional<CertificateInfo> getCertificate(final String certName) {
+        return Optional.ofNullable(certificateMap.get(certName));
+    }
+}
diff --git a/common-be/src/main/java/org/openecomp/sdc/be/csar/security/PrivateKeyReaderImpl.java b/common-be/src/main/java/org/openecomp/sdc/be/csar/security/PrivateKeyReaderImpl.java
new file mode 100644
index 0000000000..a6ee61d680
--- /dev/null
+++ b/common-be/src/main/java/org/openecomp/sdc/be/csar/security/PrivateKeyReaderImpl.java
@@ -0,0 +1,53 @@
+/*
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.openecomp.sdc.be.csar.security;
+
+import java.io.File;
+import java.io.FileReader;
+import java.security.Key;
+import org.bouncycastle.asn1.pkcs.PrivateKeyInfo;
+import org.bouncycastle.jce.provider.BouncyCastleProvider;
+import org.bouncycastle.openssl.PEMParser;
+import org.bouncycastle.openssl.jcajce.JcaPEMKeyConverter;
+import org.openecomp.sdc.be.csar.security.api.PrivateKeyReader;
+import org.openecomp.sdc.be.csar.security.exception.LoadPrivateKeyException;
+import org.openecomp.sdc.be.csar.security.exception.UnsupportedKeyFormatException;
+import org.springframework.stereotype.Component;
+
+@Component
+public class PrivateKeyReaderImpl implements PrivateKeyReader {
+
+    @Override
+    public Key loadPrivateKey(final File privateKeyFile) {
+        try (final PEMParser pemParser = new PEMParser(new FileReader(privateKeyFile))) {
+            final Object pemObject = pemParser.readObject();
+            final JcaPEMKeyConverter converter = new JcaPEMKeyConverter().setProvider(BouncyCastleProvider.PROVIDER_NAME);
+            if (pemObject instanceof PrivateKeyInfo) {
+                return converter.getPrivateKey((PrivateKeyInfo) pemObject);
+            }
+        } catch (final Exception e) {
+            final String errorMsg = "Could not load the private key from given file '%s'";
+            throw new LoadPrivateKeyException(String.format(errorMsg, privateKeyFile), e);
+        }
+        final String errorMsg = "Could not load the private key from given file '%s'. Unsupported format.";
+        throw new UnsupportedKeyFormatException(String.format(errorMsg, privateKeyFile));
+    }
+
+}
diff --git a/common-be/src/main/java/org/openecomp/sdc/be/csar/security/Sha256WithRsaCmsContentSigner.java b/common-be/src/main/java/org/openecomp/sdc/be/csar/security/Sha256WithRsaCmsContentSigner.java
new file mode 100644
index 0000000000..7b7273e810
--- /dev/null
+++ b/common-be/src/main/java/org/openecomp/sdc/be/csar/security/Sha256WithRsaCmsContentSigner.java
@@ -0,0 +1,98 @@
+/*
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.openecomp.sdc.be.csar.security;
+
+import java.io.IOException;
+import java.io.StringWriter;
+import java.security.Key;
+import java.security.PrivateKey;
+import java.security.cert.Certificate;
+import java.security.cert.CertificateEncodingException;
+import java.security.cert.X509Certificate;
+import java.util.Collections;
+import org.bouncycastle.asn1.ASN1Primitive;
+import org.bouncycastle.asn1.cms.ContentInfo;
+import org.bouncycastle.cert.jcajce.JcaCertStore;
+import org.bouncycastle.cms.CMSProcessableByteArray;
+import org.bouncycastle.cms.CMSSignedData;
+import org.bouncycastle.cms.CMSSignedDataGenerator;
+import org.bouncycastle.cms.CMSTypedData;
+import org.bouncycastle.cms.jcajce.JcaSignerInfoGeneratorBuilder;
+import org.bouncycastle.jce.provider.BouncyCastleProvider;
+import org.bouncycastle.openssl.jcajce.JcaPEMWriter;
+import org.bouncycastle.operator.ContentSigner;
+import org.bouncycastle.operator.jcajce.JcaContentSignerBuilder;
+import org.bouncycastle.operator.jcajce.JcaDigestCalculatorProviderBuilder;
+import org.openecomp.sdc.be.csar.security.api.CmsContentSigner;
+import org.openecomp.sdc.be.csar.security.exception.CmsSignatureException;
+import org.springframework.stereotype.Component;
+
+@Component
+public class Sha256WithRsaCmsContentSigner implements CmsContentSigner {
+
+    @Override
+    public byte[] signData(final byte[] data, final Certificate signingCertificate, final Key signingKey)
+        throws CmsSignatureException {
+
+        final CMSTypedData cmsData = new CMSProcessableByteArray(data);
+        final JcaCertStore certStore = createCertificateStore(signingCertificate);
+        try {
+            final ContentSigner contentSigner
+                = new JcaContentSignerBuilder("SHA256withRSA")
+                .setProvider(BouncyCastleProvider.PROVIDER_NAME).build((PrivateKey) signingKey);
+
+            final CMSSignedDataGenerator cmsGenerator = new CMSSignedDataGenerator();
+            cmsGenerator.addSignerInfoGenerator(
+                new JcaSignerInfoGeneratorBuilder(
+                    new JcaDigestCalculatorProviderBuilder().setProvider(BouncyCastleProvider.PROVIDER_NAME).build()
+                ).build(contentSigner, (X509Certificate) signingCertificate)
+            );
+            cmsGenerator.addCertificates(certStore);
+
+            final CMSSignedData cms = cmsGenerator.generate(cmsData, false);
+            return cms.getEncoded();
+        } catch (final Exception e) {
+            throw new CmsSignatureException("Could not sign the given data", e);
+        }
+    }
+
+    @Override
+    public String formatToPemSignature(final byte[] signedData) throws CmsSignatureException {
+        final StringWriter sw = new StringWriter();
+        try (final JcaPEMWriter jcaPEMWriter = new JcaPEMWriter(sw)) {
+            final ContentInfo ci = ContentInfo.getInstance(ASN1Primitive.fromByteArray(signedData));
+            jcaPEMWriter.writeObject(ci);
+        } catch (final IOException e) {
+            throw new CmsSignatureException("Could not convert signed data to PEM format", e);
+        }
+        return sw.toString();
+    }
+
+    private JcaCertStore createCertificateStore(final Certificate signingCertificate) throws CmsSignatureException {
+        try {
+            return new JcaCertStore(Collections.singletonList(signingCertificate));
+        } catch (final CertificateEncodingException e) {
+            final String errorMsg = String
+                .format("Could not create certificate store from certificate '%s'", signingCertificate);
+            throw new CmsSignatureException(errorMsg, e);
+        }
+    }
+
+}
diff --git a/common-be/src/main/java/org/openecomp/sdc/be/csar/security/X509CertificateReader.java b/common-be/src/main/java/org/openecomp/sdc/be/csar/security/X509CertificateReader.java
new file mode 100644
index 0000000000..b8e95e7b18
--- /dev/null
+++ b/common-be/src/main/java/org/openecomp/sdc/be/csar/security/X509CertificateReader.java
@@ -0,0 +1,57 @@
+/*
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.openecomp.sdc.be.csar.security;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.InputStream;
+import java.security.cert.Certificate;
+import java.security.cert.CertificateException;
+import java.security.cert.CertificateFactory;
+import org.openecomp.sdc.be.csar.security.api.CertificateReader;
+import org.openecomp.sdc.be.csar.security.exception.LoadCertificateException;
+import org.springframework.stereotype.Component;
+
+@Component
+public class X509CertificateReader implements CertificateReader {
+
+    /**
+     * Reads X.509 certificate file.
+     *
+     * @param certFile the certificate file
+     * @return the read certificate
+     * @throws LoadCertificateException when an error has occurred while reading the certificate
+     */
+    @Override
+    public Certificate loadCertificate(final File certFile) {
+        try (final FileInputStream fi = new FileInputStream(certFile)) {
+            return buildCertificate(fi);
+        } catch (final Exception e) {
+            final String errorMsg = "Could not load the certificate from given file '%s'";
+            throw new LoadCertificateException(String.format(errorMsg, certFile), e);
+        }
+    }
+
+    private Certificate buildCertificate(final InputStream certificateInputStream) throws CertificateException {
+        final CertificateFactory factory = CertificateFactory.getInstance("X.509");
+        return factory.generateCertificate(certificateInputStream);
+    }
+
+}
diff --git a/common-be/src/main/java/org/openecomp/sdc/be/csar/security/api/CertificateManager.java b/common-be/src/main/java/org/openecomp/sdc/be/csar/security/api/CertificateManager.java
new file mode 100644
index 0000000000..53437f399f
--- /dev/null
+++ b/common-be/src/main/java/org/openecomp/sdc/be/csar/security/api/CertificateManager.java
@@ -0,0 +1,29 @@
+/*
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.openecomp.sdc.be.csar.security.api;
+
+import java.util.Optional;
+import org.openecomp.sdc.be.csar.security.api.model.CertificateInfo;
+
+public interface CertificateManager {
+
+    Optional<CertificateInfo> getCertificate(String certName);
+
+}
diff --git a/common-be/src/main/java/org/openecomp/sdc/be/csar/security/api/CertificateReader.java b/common-be/src/main/java/org/openecomp/sdc/be/csar/security/api/CertificateReader.java
new file mode 100644
index 0000000000..4c32fa1cee
--- /dev/null
+++ b/common-be/src/main/java/org/openecomp/sdc/be/csar/security/api/CertificateReader.java
@@ -0,0 +1,34 @@
+/*
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.openecomp.sdc.be.csar.security.api;
+
+import java.io.File;
+import java.security.cert.Certificate;
+
+public interface CertificateReader {
+
+    /**
+     * Reads a certificate file.
+     *
+     * @param certFile the certificate file
+     * @return the read certificate
+     */
+    Certificate loadCertificate(File certFile);
+}
diff --git a/common-be/src/main/java/org/openecomp/sdc/be/csar/security/api/CmsContentSigner.java b/common-be/src/main/java/org/openecomp/sdc/be/csar/security/api/CmsContentSigner.java
new file mode 100644
index 0000000000..37bd988e50
--- /dev/null
+++ b/common-be/src/main/java/org/openecomp/sdc/be/csar/security/api/CmsContentSigner.java
@@ -0,0 +1,32 @@
+/*
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.openecomp.sdc.be.csar.security.api;
+
+import java.security.Key;
+import java.security.cert.Certificate;
+import org.openecomp.sdc.be.csar.security.exception.CmsSignatureException;
+
+public interface CmsContentSigner {
+
+    byte[] signData(byte[] data, Certificate signingCertificate, Key signingKey)
+        throws CmsSignatureException;
+
+    String formatToPemSignature(byte[] signedData) throws CmsSignatureException;
+}
diff --git a/common-be/src/main/java/org/openecomp/sdc/be/csar/security/api/PrivateKeyReader.java b/common-be/src/main/java/org/openecomp/sdc/be/csar/security/api/PrivateKeyReader.java
new file mode 100644
index 0000000000..3e8c406b74
--- /dev/null
+++ b/common-be/src/main/java/org/openecomp/sdc/be/csar/security/api/PrivateKeyReader.java
@@ -0,0 +1,38 @@
+/*
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.openecomp.sdc.be.csar.security.api;
+
+import java.io.File;
+import java.security.Key;
+import org.openecomp.sdc.be.csar.security.exception.LoadPrivateKeyException;
+import org.openecomp.sdc.be.csar.security.exception.UnsupportedKeyFormatException;
+
+public interface PrivateKeyReader {
+
+    /**
+     * Reads a given private file.
+     *
+     * @param privateKeyFile the private key file
+     * @return the read private key
+     * @throws LoadPrivateKeyException       when an error has occurred while reading the private key
+     * @throws UnsupportedKeyFormatException when the private key is not supported
+     */
+    Key loadPrivateKey(final File privateKeyFile);
+}
diff --git a/common-be/src/main/java/org/openecomp/sdc/be/csar/security/api/model/CertificateInfo.java b/common-be/src/main/java/org/openecomp/sdc/be/csar/security/api/model/CertificateInfo.java
new file mode 100644
index 0000000000..5b234cc661
--- /dev/null
+++ b/common-be/src/main/java/org/openecomp/sdc/be/csar/security/api/model/CertificateInfo.java
@@ -0,0 +1,46 @@
+/*
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.openecomp.sdc.be.csar.security.api.model;
+
+import java.io.File;
+import java.security.Key;
+import java.security.cert.Certificate;
+
+public interface CertificateInfo {
+
+    String getName();
+
+    File getCertificateFile();
+
+    Certificate getCertificate();
+
+    File getPrivateKeyFile();
+
+    Key getPrivateKey();
+
+    /**
+     * Check if the certificate is valid.
+     *
+     * @return {@code true} if the certificate is valid. {@code false} otherwise.
+     * @throws UnsupportedOperationException when the certificate is not supported
+     */
+    boolean isValid();
+
+}
diff --git a/common-be/src/main/java/org/openecomp/sdc/be/csar/security/exception/CertificateNotFoundException.java b/common-be/src/main/java/org/openecomp/sdc/be/csar/security/exception/CertificateNotFoundException.java
new file mode 100644
index 0000000000..a2175f379c
--- /dev/null
+++ b/common-be/src/main/java/org/openecomp/sdc/be/csar/security/exception/CertificateNotFoundException.java
@@ -0,0 +1,27 @@
+/*
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.openecomp.sdc.be.csar.security.exception;
+
+public class CertificateNotFoundException extends RuntimeException {
+
+    public CertificateNotFoundException(final String message) {
+        super(message);
+    }
+}
diff --git a/common-be/src/main/java/org/openecomp/sdc/be/csar/security/exception/CmsSignatureException.java b/common-be/src/main/java/org/openecomp/sdc/be/csar/security/exception/CmsSignatureException.java
new file mode 100644
index 0000000000..6bc49d6e4d
--- /dev/null
+++ b/common-be/src/main/java/org/openecomp/sdc/be/csar/security/exception/CmsSignatureException.java
@@ -0,0 +1,27 @@
+/*
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.openecomp.sdc.be.csar.security.exception;
+
+public class CmsSignatureException extends Exception {
+
+    public CmsSignatureException(final String message, final Throwable cause) {
+        super(message, cause);
+    }
+}
diff --git a/common-be/src/main/java/org/openecomp/sdc/be/csar/security/exception/LoadCertificateException.java b/common-be/src/main/java/org/openecomp/sdc/be/csar/security/exception/LoadCertificateException.java
new file mode 100644
index 0000000000..3cd10628f5
--- /dev/null
+++ b/common-be/src/main/java/org/openecomp/sdc/be/csar/security/exception/LoadCertificateException.java
@@ -0,0 +1,27 @@
+/*
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.openecomp.sdc.be.csar.security.exception;
+
+public class LoadCertificateException extends RuntimeException {
+
+    public LoadCertificateException(final String message, final Throwable cause) {
+        super(message, cause);
+    }
+}
diff --git a/common-be/src/main/java/org/openecomp/sdc/be/csar/security/exception/LoadPrivateKeyException.java b/common-be/src/main/java/org/openecomp/sdc/be/csar/security/exception/LoadPrivateKeyException.java
new file mode 100644
index 0000000000..00681bc842
--- /dev/null
+++ b/common-be/src/main/java/org/openecomp/sdc/be/csar/security/exception/LoadPrivateKeyException.java
@@ -0,0 +1,27 @@
+/*
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.openecomp.sdc.be.csar.security.exception;
+
+public class LoadPrivateKeyException extends RuntimeException {
+
+    public LoadPrivateKeyException(final String message, final Throwable cause) {
+        super(message, cause);
+    }
+}
diff --git a/common-be/src/main/java/org/openecomp/sdc/be/csar/security/exception/UnsupportedKeyFormatException.java b/common-be/src/main/java/org/openecomp/sdc/be/csar/security/exception/UnsupportedKeyFormatException.java
new file mode 100644
index 0000000000..d30f6f274a
--- /dev/null
+++ b/common-be/src/main/java/org/openecomp/sdc/be/csar/security/exception/UnsupportedKeyFormatException.java
@@ -0,0 +1,27 @@
+/*
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.openecomp.sdc.be.csar.security.exception;
+
+public class UnsupportedKeyFormatException extends RuntimeException {
+
+    public UnsupportedKeyFormatException(final String message) {
+        super(message);
+    }
+}
diff --git a/common-be/src/main/java/org/openecomp/sdc/be/csar/security/model/CertificateInfoImpl.java b/common-be/src/main/java/org/openecomp/sdc/be/csar/security/model/CertificateInfoImpl.java
new file mode 100644
index 0000000000..f7b2fafb3c
--- /dev/null
+++ b/common-be/src/main/java/org/openecomp/sdc/be/csar/security/model/CertificateInfoImpl.java
@@ -0,0 +1,70 @@
+/*
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.openecomp.sdc.be.csar.security.model;
+
+import java.io.File;
+import java.security.Key;
+import java.security.cert.Certificate;
+import java.security.cert.X509Certificate;
+import lombok.Getter;
+import org.apache.commons.io.FilenameUtils;
+import org.openecomp.sdc.be.csar.security.api.model.CertificateInfo;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+@Getter
+public class CertificateInfoImpl implements CertificateInfo {
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(CertificateInfoImpl.class);
+
+    private final String name;
+    private final File certificateFile;
+    private final Certificate certificate;
+    private File privateKeyFile;
+    private Key privateKey;
+
+    public CertificateInfoImpl(final File certificateFile, final Certificate certificate) {
+        this.certificateFile = certificateFile;
+        this.certificate = certificate;
+        this.name = FilenameUtils.getBaseName(certificateFile.getName());
+    }
+
+    public CertificateInfoImpl(final File certificateFile, final Certificate certificate,
+                               final File privateKeyFile, final Key privateKey) {
+        this(certificateFile, certificate);
+        this.privateKeyFile = privateKeyFile;
+        this.privateKey = privateKey;
+    }
+
+    @Override
+    public boolean isValid() {
+        if("X.509".equals(certificate.getType())) {
+            try {
+                ((X509Certificate) certificate).checkValidity();
+                return true;
+            } catch (final Exception e) {
+                LOGGER.warn("Invalid certificate '{}'", certificateFile.getAbsolutePath(), e);
+                return false;
+            }
+        }
+        throw new UnsupportedOperationException(String.format("Certificate type '%s' not supported", certificate.getType()));
+    }
+
+}