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, 855 insertions, 53 deletions

diff --git a/catalog-be-plugins/etsi-nfv-nsd-csar-plugin/src/main/java/org/openecomp/sdc/be/plugins/etsi/nfv/nsd/builder/NsdCsarManifestBuilder.java b/catalog-be-plugins/etsi-nfv-nsd-csar-plugin/src/main/java/org/openecomp/sdc/be/plugins/etsi/nfv/nsd/builder/NsdCsarManifestBuilder.java
index 38f03f12f5..73be4a2100 100644
--- a/catalog-be-plugins/etsi-nfv-nsd-csar-plugin/src/main/java/org/openecomp/sdc/be/plugins/etsi/nfv/nsd/builder/NsdCsarManifestBuilder.java
+++ b/catalog-be-plugins/etsi-nfv-nsd-csar-plugin/src/main/java/org/openecomp/sdc/be/plugins/etsi/nfv/nsd/builder/NsdCsarManifestBuilder.java
@@ -1,4 +1,3 @@
- 
 /*
  * ============LICENSE_START=======================================================
  *  Copyright (C) 2020 Nordix Foundation
@@ -25,6 +24,7 @@ import java.util.Collection;
 import java.util.LinkedHashSet;
 import java.util.Set;
 import java.util.TreeSet;
+import org.apache.commons.lang.StringUtils;
 
 /**
  * Builder for the manifest (.mf) file in a NSD CSAR
@@ -45,6 +45,7 @@ public class NsdCsarManifestBuilder {
     private final MetadataHeader metadataHeader;
     private final Set<String> sources;
     private final Set<String> compatibleSpecificationVersions;
+    private String signature;
 
     public NsdCsarManifestBuilder() {
         metadataHeader = new MetadataHeader();
@@ -122,6 +123,13 @@ public class NsdCsarManifestBuilder {
         return this;
     }
 
+    public NsdCsarManifestBuilder withSignature(final String signature) {
+        if (signature != null) {
+            this.signature = signature.trim();
+        }
+        return this;
+    }
+
     /**
      * Builds a string representing the manifest content based on provided values.
      *
@@ -142,7 +150,14 @@ public class NsdCsarManifestBuilder {
                 .append(String.join(",", compatibleSpecificationVersions)).append(NEW_LINE);
         }
         final StringBuilder builder = new StringBuilder();
-        builder.append(metadataBuilder).append(compatibleSpecificationVersionsBuilder).append(NEW_LINE).append(sourceBuilder);
+
+        builder.append(metadataBuilder)
+            .append(compatibleSpecificationVersionsBuilder)
+            .append(NEW_LINE)
+            .append(sourceBuilder);
+        if (StringUtils.isNotBlank(signature)) {
+            builder.append(signature);
+        }
         return builder.toString();
     }
 
diff --git a/catalog-be-plugins/etsi-nfv-nsd-csar-plugin/src/main/java/org/openecomp/sdc/be/plugins/etsi/nfv/nsd/factory/EtsiNfvNsdCsarGeneratorFactory.java b/catalog-be-plugins/etsi-nfv-nsd-csar-plugin/src/main/java/org/openecomp/sdc/be/plugins/etsi/nfv/nsd/factory/EtsiNfvNsdCsarGeneratorFactory.java
index fb08f56ac2..c51dc51854 100644
--- a/catalog-be-plugins/etsi-nfv-nsd-csar-plugin/src/main/java/org/openecomp/sdc/be/plugins/etsi/nfv/nsd/factory/EtsiNfvNsdCsarGeneratorFactory.java
+++ b/catalog-be-plugins/etsi-nfv-nsd-csar-plugin/src/main/java/org/openecomp/sdc/be/plugins/etsi/nfv/nsd/factory/EtsiNfvNsdCsarGeneratorFactory.java
@@ -1,4 +1,3 @@
- 
 /*
  * ============LICENSE_START=======================================================
  *  Copyright (C) 2021 Nordix Foundation
@@ -25,6 +24,7 @@ import org.openecomp.sdc.be.plugins.etsi.nfv.nsd.generator.EtsiNfvNsdCsarGenerat
 import org.openecomp.sdc.be.plugins.etsi.nfv.nsd.generator.VnfDescriptorGenerator;
 import org.openecomp.sdc.be.plugins.etsi.nfv.nsd.generator.config.EtsiVersion;
 import org.openecomp.sdc.be.plugins.etsi.nfv.nsd.generator.config.NsDescriptorConfig;
+import org.openecomp.sdc.be.plugins.etsi.nfv.nsd.security.NsdCsarEtsiOption2Signer;
 import org.springframework.beans.factory.ObjectProvider;
 import org.springframework.stereotype.Component;
 
@@ -35,20 +35,24 @@ public class EtsiNfvNsdCsarGeneratorFactory {
     private final NsDescriptorGeneratorFactory nsDescriptorGeneratorFactory;
     private final ArtifactCassandraDao artifactCassandraDao;
     private final ObjectProvider<EtsiNfvNsdCsarGeneratorImpl> etsiNfvNsdCsarGeneratorObjectProvider;
+    private final NsdCsarEtsiOption2Signer nsdCsarEtsiOption2Signer;
 
     public EtsiNfvNsdCsarGeneratorFactory(final VnfDescriptorGenerator vnfDescriptorGenerator,
                                           final NsDescriptorGeneratorFactory nsDescriptorGeneratorFactory,
                                           final ArtifactCassandraDao artifactCassandraDao,
-                                          final ObjectProvider<EtsiNfvNsdCsarGeneratorImpl> etsiNfvNsdCsarGeneratorObjectProvider) {
+                                          final ObjectProvider<EtsiNfvNsdCsarGeneratorImpl> etsiNfvNsdCsarGeneratorObjectProvider,
+                                          final NsdCsarEtsiOption2Signer nsdCsarEtsiOption2Signer) {
         this.vnfDescriptorGenerator = vnfDescriptorGenerator;
         this.nsDescriptorGeneratorFactory = nsDescriptorGeneratorFactory;
         this.artifactCassandraDao = artifactCassandraDao;
         this.etsiNfvNsdCsarGeneratorObjectProvider = etsiNfvNsdCsarGeneratorObjectProvider;
+        this.nsdCsarEtsiOption2Signer = nsdCsarEtsiOption2Signer;
     }
 
     public EtsiNfvNsdCsarGenerator create(final EtsiVersion version) {
         final NsDescriptorConfig nsDescriptorConfig = new NsDescriptorConfig(version);
         return etsiNfvNsdCsarGeneratorObjectProvider
-            .getObject(nsDescriptorConfig, vnfDescriptorGenerator, nsDescriptorGeneratorFactory, artifactCassandraDao);
+            .getObject(nsDescriptorConfig, vnfDescriptorGenerator, nsDescriptorGeneratorFactory, artifactCassandraDao
+                , nsdCsarEtsiOption2Signer);
     }
 }
diff --git a/catalog-be-plugins/etsi-nfv-nsd-csar-plugin/src/main/java/org/openecomp/sdc/be/plugins/etsi/nfv/nsd/generator/EtsiNfvNsCsarEntryGenerator.java b/catalog-be-plugins/etsi-nfv-nsd-csar-plugin/src/main/java/org/openecomp/sdc/be/plugins/etsi/nfv/nsd/generator/EtsiNfvNsCsarEntryGenerator.java
index 90359a550d..9a7312b0fb 100644
--- a/catalog-be-plugins/etsi-nfv-nsd-csar-plugin/src/main/java/org/openecomp/sdc/be/plugins/etsi/nfv/nsd/generator/EtsiNfvNsCsarEntryGenerator.java
+++ b/catalog-be-plugins/etsi-nfv-nsd-csar-plugin/src/main/java/org/openecomp/sdc/be/plugins/etsi/nfv/nsd/generator/EtsiNfvNsCsarEntryGenerator.java
@@ -1,4 +1,3 @@
- 
 /*
  * ============LICENSE_START=======================================================
  *  Copyright (C) 2020 Nordix Foundation
@@ -30,6 +29,7 @@ import org.openecomp.sdc.be.plugins.CsarEntryGenerator;
 import org.openecomp.sdc.be.plugins.etsi.nfv.nsd.exception.NsdException;
 import org.openecomp.sdc.be.plugins.etsi.nfv.nsd.factory.EtsiNfvNsdCsarGeneratorFactory;
 import org.openecomp.sdc.be.plugins.etsi.nfv.nsd.generator.config.EtsiVersion;
+import org.openecomp.sdc.be.plugins.etsi.nfv.nsd.model.NsdCsar;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -40,7 +40,9 @@ import org.slf4j.LoggerFactory;
 public class EtsiNfvNsCsarEntryGenerator implements CsarEntryGenerator {
 
     static final String ETSI_NS_COMPONENT_CATEGORY = "ETSI NFV Network Service";
-    static final String NSD_FILE_PATH_FORMAT = "Artifacts/%s/%s.csar";
+    static final String NSD_FILE_PATH_FORMAT = "Artifacts/%s/%s.%s";
+    static final String SIGNED_CSAR_EXTENSION = "zip";
+    static final String UNSIGNED_CSAR_EXTENSION = "csar";
     static final String ETSI_VERSION_METADATA = "ETSI Version";
     private static final Logger LOGGER = LoggerFactory.getLogger(EtsiNfvNsCsarEntryGenerator.class);
     private final EtsiNfvNsdCsarGeneratorFactory etsiNfvNsdCsarGeneratorFactory;
@@ -69,7 +71,8 @@ public class EtsiNfvNsCsarEntryGenerator implements CsarEntryGenerator {
                 ETSI_NS_COMPONENT_CATEGORY);
             return Collections.emptyMap();
         }
-        final byte[] nsdCsar;
+
+        final NsdCsar nsdCsar;
         try {
             final EtsiVersion etsiVersion = getComponentEtsiVersion(component);
             final EtsiNfvNsdCsarGenerator etsiNfvNsdCsarGenerator = etsiNfvNsdCsarGeneratorFactory.create(etsiVersion);
@@ -81,7 +84,8 @@ public class EtsiNfvNsCsarEntryGenerator implements CsarEntryGenerator {
             LOGGER.error("Could not create NSD CSAR entry for component '{}'. An unexpected exception occurred", component.getName(), e);
             return Collections.emptyMap();
         }
-        return createEntry(component.getNormalizedName(), nsdCsar);
+
+        return createEntry(nsdCsar);
     }
 
     private EtsiVersion getComponentEtsiVersion(Component component) {
@@ -89,10 +93,11 @@ public class EtsiNfvNsCsarEntryGenerator implements CsarEntryGenerator {
         return EtsiVersion.convertOrNull(etsiVersion);
     }
 
-    private Map<String, byte[]> createEntry(final String csarName, final byte[] nsdCsar) {
+    private Map<String, byte[]> createEntry(final NsdCsar nsdCsar) {
         final Map<String, byte[]> entryMap = new HashMap<>();
-        final String entryKey = String.format(NSD_FILE_PATH_FORMAT, ETSI_PACKAGE, csarName);
-        entryMap.put(entryKey, nsdCsar);
+        final String extension = nsdCsar.isSigned() ? SIGNED_CSAR_EXTENSION : UNSIGNED_CSAR_EXTENSION;
+        final String entryKey = String.format(NSD_FILE_PATH_FORMAT, ETSI_PACKAGE, nsdCsar.getFileName(), extension);
+        entryMap.put(entryKey, nsdCsar.getCsarPackage());
         return entryMap;
     }
 }
diff --git a/catalog-be-plugins/etsi-nfv-nsd-csar-plugin/src/main/java/org/openecomp/sdc/be/plugins/etsi/nfv/nsd/generator/EtsiNfvNsdCsarGenerator.java b/catalog-be-plugins/etsi-nfv-nsd-csar-plugin/src/main/java/org/openecomp/sdc/be/plugins/etsi/nfv/nsd/generator/EtsiNfvNsdCsarGenerator.java
index 072c4c5a89..1ad6e82481 100644
--- a/catalog-be-plugins/etsi-nfv-nsd-csar-plugin/src/main/java/org/openecomp/sdc/be/plugins/etsi/nfv/nsd/generator/EtsiNfvNsdCsarGenerator.java
+++ b/catalog-be-plugins/etsi-nfv-nsd-csar-plugin/src/main/java/org/openecomp/sdc/be/plugins/etsi/nfv/nsd/generator/EtsiNfvNsdCsarGenerator.java
@@ -1,4 +1,3 @@
- 
 /*
  * ============LICENSE_START=======================================================
  *  Copyright (C) 2020 Nordix Foundation
@@ -21,6 +20,7 @@ package org.openecomp.sdc.be.plugins.etsi.nfv.nsd.generator;
 
 import org.openecomp.sdc.be.model.Component;
 import org.openecomp.sdc.be.plugins.etsi.nfv.nsd.exception.NsdException;
+import org.openecomp.sdc.be.plugins.etsi.nfv.nsd.model.NsdCsar;
 
 /**
  * Generator for a ETSI NFV NSD CSAR
@@ -33,5 +33,5 @@ public interface EtsiNfvNsdCsarGenerator {
      * @param component the service component
      * @return the CSAR package content
      */
-    byte[] generateNsdCsar(Component component) throws NsdException;
+    NsdCsar generateNsdCsar(Component component) throws NsdException;
 }
diff --git a/catalog-be-plugins/etsi-nfv-nsd-csar-plugin/src/main/java/org/openecomp/sdc/be/plugins/etsi/nfv/nsd/generator/EtsiNfvNsdCsarGeneratorImpl.java b/catalog-be-plugins/etsi-nfv-nsd-csar-plugin/src/main/java/org/openecomp/sdc/be/plugins/etsi/nfv/nsd/generator/EtsiNfvNsdCsarGeneratorImpl.java
index e7d30197d7..f9e0970ba9 100644
--- a/catalog-be-plugins/etsi-nfv-nsd-csar-plugin/src/main/java/org/openecomp/sdc/be/plugins/etsi/nfv/nsd/generator/EtsiNfvNsdCsarGeneratorImpl.java
+++ b/catalog-be-plugins/etsi-nfv-nsd-csar-plugin/src/main/java/org/openecomp/sdc/be/plugins/etsi/nfv/nsd/generator/EtsiNfvNsdCsarGeneratorImpl.java
@@ -1,4 +1,3 @@
- 
 /*
  * ============LICENSE_START=======================================================
  *  Copyright (C) 2020 Nordix Foundation
@@ -23,10 +22,13 @@ import static org.openecomp.sdc.common.api.ArtifactTypeEnum.ETSI_PACKAGE;
 import static org.openecomp.sdc.common.api.ArtifactTypeEnum.ONBOARDED_PACKAGE;
 
 import fj.data.Either;
+import java.io.File;
 import java.io.IOException;
+import java.nio.file.Files;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.HashMap;
+import java.util.HashSet;
 import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;
@@ -36,9 +38,11 @@ import java.util.zip.ZipEntry;
 import java.util.zip.ZipOutputStream;
 import org.apache.commons.collections.CollectionUtils;
 import org.apache.commons.collections.MapUtils;
+import org.apache.commons.io.FilenameUtils;
 import org.apache.commons.io.IOUtils;
 import org.apache.commons.io.output.ByteArrayOutputStream;
 import org.apache.commons.lang.StringUtils;
+import org.openecomp.sdc.be.csar.security.api.model.CertificateInfo;
 import org.openecomp.sdc.be.dao.cassandra.ArtifactCassandraDao;
 import org.openecomp.sdc.be.dao.cassandra.CassandraOperationStatus;
 import org.openecomp.sdc.be.datatypes.enums.JsonPresentationFields;
@@ -53,7 +57,9 @@ import org.openecomp.sdc.be.plugins.etsi.nfv.nsd.generator.config.EtsiVersion;
 import org.openecomp.sdc.be.plugins.etsi.nfv.nsd.generator.config.NsDescriptorConfig;
 import org.openecomp.sdc.be.plugins.etsi.nfv.nsd.generator.config.NsDescriptorVersionComparator;
 import org.openecomp.sdc.be.plugins.etsi.nfv.nsd.model.Nsd;
+import org.openecomp.sdc.be.plugins.etsi.nfv.nsd.model.NsdCsar;
 import org.openecomp.sdc.be.plugins.etsi.nfv.nsd.model.VnfDescriptor;
+import org.openecomp.sdc.be.plugins.etsi.nfv.nsd.security.NsdCsarEtsiOption2Signer;
 import org.openecomp.sdc.be.resources.data.DAOArtifactData;
 import org.openecomp.sdc.be.tosca.utils.OperationArtifactUtil;
 import org.slf4j.Logger;
@@ -74,6 +80,8 @@ public class EtsiNfvNsdCsarGeneratorImpl implements EtsiNfvNsdCsarGenerator {
     private static final String MANIFEST_EXT = "mf";
     private static final String SLASH = "/";
     private static final String DOT = ".";
+    private static final String SIGNATURE_EXTENSION = ".sig.cms";
+    private static final String CSAR_EXTENSION = ".csar";
     private static final String DOT_YAML = DOT + "yaml";
     private static final String DEFINITION = "Definitions";
     private static final String TOSCA_META_PATH = "TOSCA-Metadata/TOSCA.meta";
@@ -81,18 +89,21 @@ public class EtsiNfvNsdCsarGeneratorImpl implements EtsiNfvNsdCsarGenerator {
     private final NsDescriptorGeneratorFactory nsDescriptorGeneratorFactory;
     private final ArtifactCassandraDao artifactCassandraDao;
     private final NsDescriptorConfig nsDescriptorConfig;
+    private final NsdCsarEtsiOption2Signer nsdCsarEtsiOption2Signer;
 
     public EtsiNfvNsdCsarGeneratorImpl(final NsDescriptorConfig nsDescriptorConfig, final VnfDescriptorGenerator vnfDescriptorGenerator,
                                        final NsDescriptorGeneratorFactory nsDescriptorGeneratorFactory,
-                                       final ArtifactCassandraDao artifactCassandraDao) {
+                                       final ArtifactCassandraDao artifactCassandraDao,
+                                       final NsdCsarEtsiOption2Signer nsdCsarEtsiOption2Signer) {
         this.nsDescriptorConfig = nsDescriptorConfig;
         this.vnfDescriptorGenerator = vnfDescriptorGenerator;
         this.nsDescriptorGeneratorFactory = nsDescriptorGeneratorFactory;
         this.artifactCassandraDao = artifactCassandraDao;
+        this.nsdCsarEtsiOption2Signer = nsdCsarEtsiOption2Signer;
     }
 
     @Override
-    public byte[] generateNsdCsar(final Component component) throws NsdException {
+    public NsdCsar generateNsdCsar(final Component component) throws NsdException {
         if (component == null) {
             throw new NsdException("Could not generate the NSD CSAR, invalid component argument");
         }
@@ -101,23 +112,43 @@ public class EtsiNfvNsdCsarGeneratorImpl implements EtsiNfvNsdCsarGenerator {
         final String componentName = component.getName();
         try {
             LOGGER.debug("Starting NSD CSAR generation for component '{}'", componentName);
-            final Map<String, byte[]> nsdCsarFiles = new HashMap<>();
-            final List<VnfDescriptor> vnfDescriptorList = generateVnfPackages(component);
-            vnfDescriptorList.forEach(vnfPackage -> nsdCsarFiles.putAll(vnfPackage.getDefinitionFiles()));
             final String nsdFileName = getNsdFileName(component);
+            final NsdCsar nsdCsar = new NsdCsar(nsdFileName);
+
+            final List<VnfDescriptor> vnfDescriptorList = generateVnfPackages(component);
+            vnfDescriptorList.forEach(vnfPackage -> nsdCsar.addAllFiles(vnfPackage.getDefinitionFiles()));
+
             final EtsiVersion etsiVersion = nsDescriptorConfig.getNsVersion();
             final Nsd nsd = generateNsd(component, vnfDescriptorList);
-            nsdCsarFiles.put(getNsdPath(nsdFileName), nsd.getContents());
-            nsdCsarFiles.put(TOSCA_META_PATH, buildToscaMetaContent(nsdFileName).getBytes());
-            addEtsiSolNsdTypes(etsiVersion, nsdCsarFiles);
+
+            nsdCsar.addFile(getNsdPath(nsdFileName), nsd.getContents());
+            nsdCsar.addFile(TOSCA_META_PATH, buildToscaMetaContent(nsdFileName).getBytes());
+
+            nsdCsar.addAllFiles(createEtsiSolNsdTypeEntries(etsiVersion));
             for (final String referencedFile : nsd.getArtifactReferences()) {
                 getReferencedArtifact(component, referencedFile)
-                    .ifPresent(artifactDefinition -> nsdCsarFiles.put(referencedFile, artifactDefinition.getPayloadData()));
+                    .ifPresent(artifactDefinition -> nsdCsar.addFile(referencedFile, artifactDefinition.getPayloadData())
+                );
+            }
+            final boolean isCertificateConfigured = nsdCsarEtsiOption2Signer.isCertificateConfigured();
+            final String manifestPath = getManifestPath(nsdFileName);
+            final NsdCsarManifestBuilder manifestBuilder =
+                createManifestBuilder(nsd, etsiVersion, manifestPath, nsdCsar.getFileMap().keySet(), isCertificateConfigured);
+
+            nsdCsar.addManifest(manifestBuilder);
+
+            if (isCertificateConfigured) {
+                nsdCsarEtsiOption2Signer.signArtifacts(nsdCsar);
+            }
+
+            byte[] package1 = buildCsarPackage(nsdCsar.getFileMap());
+            if (isCertificateConfigured) {
+                package1 = buildZipWithCsarAndSignature(nsdCsar.getFileName(), package1);
+                nsdCsar.setSigned(true);
             }
-            nsdCsarFiles.put(getManifestPath(nsdFileName), getManifestFileContent(nsd, etsiVersion, nsdCsarFiles.keySet()).getBytes());
-            final byte[] csar = buildCsarPackage(nsdCsarFiles);
+            nsdCsar.setCsarPackage(package1);
             LOGGER.debug("Successfully generated NSD CSAR package");
-            return csar;
+            return nsdCsar;
         } catch (final Exception exception) {
             throw new NsdException("Could not generate the NSD CSAR file", exception);
         }
@@ -205,29 +236,41 @@ public class EtsiNfvNsdCsarGeneratorImpl implements EtsiNfvNsdCsarGenerator {
         }).findFirst();
     }
 
-    private void addEtsiSolNsdTypes(final EtsiVersion etsiVersion, final Map<String, byte[]> nsdCsarFileMap) {
+    private Map<String, byte[]> createEtsiSolNsdTypeEntries(final EtsiVersion etsiVersion) {
         final EtsiVersion currentVersion = etsiVersion == null ? EtsiVersion.getDefaultVersion() : etsiVersion;
+
         final PathMatchingResourcePatternResolver resolver = new PathMatchingResourcePatternResolver();
         try {
             final Resource[] resources =
                 resolver.getResources(String.format("classpath:etsi-nfv-types/%s/*.*", currentVersion.getVersion()));
             if (resources.length > 0) {
+                final Map<String, byte[]> entryMap = new HashMap<>();
                 for (final Resource resource : resources) {
-                    addToCsarFileMap(resource, nsdCsarFileMap);
+                    readResource(resource).ifPresent(resourceBytes -> {
+                        final String entryName = createDefinitionEntryName(resource.getFilename());
+                        entryMap.put(entryName, resourceBytes);
+                    });
                 }
+                return entryMap;
             }
         } catch (final IOException e) {
             LOGGER.error("Could not find types files for the version '{}'", currentVersion.getVersion(), e);
         }
+
+        return Collections.emptyMap();
+    }
+
+    private String createDefinitionEntryName(final String fileName) {
+        return DEFINITION + "/" + fileName;
     }
 
-    private void addToCsarFileMap(final Resource resource, final Map<String, byte[]> nsdCsarFileMap) {
+    private Optional<byte[]> readResource(final Resource resource) {
         try {
-            nsdCsarFileMap.put(DEFINITION + "/" + resource.getFilename(),
-                IOUtils.toByteArray(resource.getInputStream()));
+            return Optional.ofNullable(IOUtils.toByteArray(resource.getInputStream()));
         } catch (final IOException exception) {
             LOGGER.error("Error adding '{}' to NSD CSAR", resource.getFilename(), exception);
         }
+        return Optional.empty();
     }
 
     private Nsd generateNsd(final Component component,
@@ -294,18 +337,24 @@ public class EtsiNfvNsdCsarGeneratorImpl implements EtsiNfvNsdCsarGenerator {
         return toscaMetadata;
     }
 
-    private String getManifestFileContent(final Nsd nsd,
-                                          final EtsiVersion nsdVersion,
-                                          final Set<String> files) {
+    private NsdCsarManifestBuilder createManifestBuilder(final Nsd nsd, final EtsiVersion nsdVersion,
+                                                         final String manifestFilePath, final Set<String> filePath,
+                                                         final boolean addSignatureFiles) {
         LOGGER.debug("Creating NS manifest file content");
 
+        final Set<String> filesToAdd = new HashSet<>(filePath);
+        if (addSignatureFiles) {
+            filePath.forEach(file -> filesToAdd.add(file + SIGNATURE_EXTENSION));
+        }
+        filesToAdd.add(manifestFilePath);
+
         final NsdCsarManifestBuilder nsdCsarManifestBuilder = new NsdCsarManifestBuilder();
         nsdCsarManifestBuilder.withDesigner(nsd.getDesigner())
             .withInvariantId(nsd.getInvariantId())
             .withName(nsd.getName())
             .withNowReleaseDateTime()
             .withFileStructureVersion(nsd.getVersion())
-            .withSources(files);
+            .withSources(filesToAdd);
 
         final NsDescriptorVersionComparator nsdVersionComparator = new NsDescriptorVersionComparator();
 
@@ -313,10 +362,10 @@ public class EtsiNfvNsdCsarGeneratorImpl implements EtsiNfvNsdCsarGenerator {
             nsdCsarManifestBuilder.withCompatibleSpecificationVersion(nsdVersion.getVersion());
         }
 
-        final String manifest = nsdCsarManifestBuilder.build();
-        LOGGER.debug("Successfully created NS CSAR manifest file content:\n {}", manifest);
-        return manifest;
-
+        if (LOGGER.isDebugEnabled()) {
+            LOGGER.debug("Successfully created NS CSAR manifest file content:\n {}", nsdCsarManifestBuilder.build());
+        }
+        return nsdCsarManifestBuilder;
     }
 
     private String getManifestPath(final String nsdFileName) {
@@ -358,6 +407,37 @@ public class EtsiNfvNsdCsarGeneratorImpl implements EtsiNfvNsdCsarGenerator {
         }
     }
 
+    private byte[] buildZipWithCsarAndSignature(final String csarFileName, final byte[] csarPackageBytes) throws NsdException {
+        final byte[] signature;
+        try {
+            signature = nsdCsarEtsiOption2Signer.sign(csarPackageBytes);
+        } catch (final Exception e) {
+            throw new NsdException(String.format("Could not sign the CSAR '%s'", csarFileName), e);
+        }
+        final Optional<CertificateInfo> certificateInfoOpt = nsdCsarEtsiOption2Signer.getSigningCertificate();
+        if (certificateInfoOpt.isEmpty()) {
+            throw new NsdException(String.format("Could not sign the CSAR '%s'. No certificate configured.", csarFileName));
+        }
+        final CertificateInfo certificateInfo = certificateInfoOpt.get();
+        try (final ByteArrayOutputStream out = new ByteArrayOutputStream();
+            final ZipOutputStream zip = new ZipOutputStream(out)) {
+            zip.putNextEntry(new ZipEntry(csarFileName + CSAR_EXTENSION));
+            zip.write(csarPackageBytes);
+            zip.putNextEntry(new ZipEntry(csarFileName + SIGNATURE_EXTENSION));
+            zip.write(signature);
+            final File certificateFile = certificateInfo.getCertificateFile();
+            zip.putNextEntry(new ZipEntry(csarFileName + "." + FilenameUtils.getExtension(certificateFile.getName())));
+            zip.write(Files.readAllBytes(certificateFile.toPath()));
+            zip.flush();
+            zip.finish();
+            LOGGER.debug("NSD signed CSAR zip file was successfully built");
+
+            return out.toByteArray();
+        } catch (final IOException e) {
+            throw new NsdException("Could not build the NSD signed CSAR zip file", e);
+        }
+    }
+
 }
 
 
diff --git a/catalog-be-plugins/etsi-nfv-nsd-csar-plugin/src/main/java/org/openecomp/sdc/be/plugins/etsi/nfv/nsd/model/NsdCsar.java b/catalog-be-plugins/etsi-nfv-nsd-csar-plugin/src/main/java/org/openecomp/sdc/be/plugins/etsi/nfv/nsd/model/NsdCsar.java
new file mode 100644
index 0000000000..733604529a
--- /dev/null
+++ b/catalog-be-plugins/etsi-nfv-nsd-csar-plugin/src/main/java/org/openecomp/sdc/be/plugins/etsi/nfv/nsd/model/NsdCsar.java
@@ -0,0 +1,110 @@
+/*
+ * ============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.plugins.etsi.nfv.nsd.model;
+
+import java.nio.charset.StandardCharsets;
+import java.util.HashMap;
+import java.util.Map;
+import lombok.Getter;
+import lombok.Setter;
+import org.openecomp.sdc.be.plugins.etsi.nfv.nsd.builder.NsdCsarManifestBuilder;
+
+/**
+ * Represents a NSD CSAR package
+ */
+public class NsdCsar {
+
+    private static final String MANIFEST_EXTENSION = "mf";
+    private static final String YAML_EXTENSION = "yaml";
+    private static final String DOT = ".";
+    private static final String SLASH = "/";
+    private static final String DEFINITIONS = "Definitions";
+
+    private final Map<String, byte[]> fileMap = new HashMap<>();
+    @Getter
+    private final String fileName;
+    @Getter
+    @Setter
+    private byte[] csarPackage;
+    @Getter
+    @Setter
+    private boolean isSigned;
+    @Getter
+    private NsdCsarManifestBuilder manifestBuilder;
+
+    public NsdCsar(final String fileName) {
+        this.fileName = fileName;
+        manifestBuilder = new NsdCsarManifestBuilder();
+    }
+
+    public void addFile(final String filePath, final byte[] fileBytes) {
+        fileMap.put(filePath, fileBytes);
+    }
+
+    public byte[] getFile(final String filePath) {
+        return fileMap.get(filePath);
+    }
+
+    public byte[] getManifest() {
+        return fileMap.get(getManifestPath());
+    }
+
+    public byte[] getMainDefinition() {
+        return fileMap.get(getMainDefinitionPath());
+    }
+
+    public Map<String, byte[]> getFileMap() {
+        return new HashMap<>(fileMap);
+    }
+
+    public String getManifestPath() {
+        return fileName + DOT + MANIFEST_EXTENSION;
+    }
+
+    public boolean isManifest(final String filePath) {
+        return getManifestPath().equals(filePath);
+    }
+
+    public String getMainDefinitionPath() {
+        return DEFINITIONS + SLASH + fileName + YAML_EXTENSION;
+    }
+
+    public void addAllFiles(final Map<String, byte[]> definitionFiles) {
+        fileMap.putAll(definitionFiles);
+    }
+
+    /**
+     * Sets a manifest builder and build it, adding its content to the to the CSAR files. Ignores {@code null} manifest builders.
+     *
+     * @param manifestBuilder the manifest builder
+     */
+    public void addManifest(final NsdCsarManifestBuilder manifestBuilder) {
+        if (manifestBuilder == null) {
+            return;
+        }
+        this.manifestBuilder = manifestBuilder;
+        final String manifestContent = manifestBuilder.build();
+        addFile(getManifestPath(), manifestContent.getBytes(StandardCharsets.UTF_8));
+    }
+
+    public boolean isEmpty() {
+        return fileMap.isEmpty();
+    }
+}
diff --git a/catalog-be-plugins/etsi-nfv-nsd-csar-plugin/src/main/java/org/openecomp/sdc/be/plugins/etsi/nfv/nsd/security/NsdCsarEtsiOption2Signer.java b/catalog-be-plugins/etsi-nfv-nsd-csar-plugin/src/main/java/org/openecomp/sdc/be/plugins/etsi/nfv/nsd/security/NsdCsarEtsiOption2Signer.java
new file mode 100644
index 0000000000..abba32ad8d
--- /dev/null
+++ b/catalog-be-plugins/etsi-nfv-nsd-csar-plugin/src/main/java/org/openecomp/sdc/be/plugins/etsi/nfv/nsd/security/NsdCsarEtsiOption2Signer.java
@@ -0,0 +1,151 @@
+/*
+ * ============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.plugins.etsi.nfv.nsd.security;
+
+import java.nio.charset.StandardCharsets;
+import java.security.Key;
+import java.security.cert.Certificate;
+import java.util.Map;
+import java.util.Map.Entry;
+import java.util.Optional;
+import java.util.stream.Collectors;
+import org.openecomp.sdc.be.csar.security.api.CertificateManager;
+import org.openecomp.sdc.be.csar.security.api.CmsContentSigner;
+import org.openecomp.sdc.be.csar.security.api.model.CertificateInfo;
+import org.openecomp.sdc.be.csar.security.exception.CmsSignatureException;
+import org.openecomp.sdc.be.plugins.etsi.nfv.nsd.builder.NsdCsarManifestBuilder;
+import org.openecomp.sdc.be.plugins.etsi.nfv.nsd.model.NsdCsar;
+import org.openecomp.sdc.be.plugins.etsi.nfv.nsd.security.exception.NsdSignatureException;
+import org.openecomp.sdc.be.plugins.etsi.nfv.nsd.security.exception.NsdSignatureExceptionSupplier;
+import org.springframework.core.env.Environment;
+import org.springframework.stereotype.Component;
+
+/**
+ * Handles NSD CSAR file and package signature, following the ETSI SOL007 v3.3.1, section 5.1, signing option 2.
+ *
+ * @see <a href="https://www.etsi.org/deliver/etsi_gs/NFV-SOL/001_099/007/03.03.01_60/gs_NFV-SOL007v030301p.pdf">ETSI SOL007 v3.3.1 documentation</a>
+ */
+@Component
+public class NsdCsarEtsiOption2Signer {
+
+    public static final String SDC_NSD_CERT_NAME = "SDC_NSD_CERT_NAME";
+    public static final String SIGNATURE_EXTENSION = ".sig.cms";
+
+    private final CertificateManager certificateManager;
+    private final CmsContentSigner cmsContentSigner;
+    private final Environment environment;
+
+    public NsdCsarEtsiOption2Signer(final CertificateManager certificateManager,
+                                    final CmsContentSigner cmsContentSigner,
+                                    final Environment environment) {
+        this.certificateManager = certificateManager;
+        this.cmsContentSigner = cmsContentSigner;
+        this.environment = environment;
+    }
+
+    /**
+     * Sign each NSD CSAR artifact (files), generating a cms file for each. The manifest, though, have its signature added in its body instead of a separate
+     * CMS file. Modifies the given NSD CSAR by adding the file signatures and the modified manifest.
+     *
+     * @param nsdCsar the NSD CSAR
+     * @throws NsdSignatureException when there was a problem while creating a file signature
+     */
+    public void signArtifacts(final NsdCsar nsdCsar) throws NsdSignatureException {
+        if (nsdCsar == null) {
+            return;
+        }
+        //ignore the manifest, the signature of the manifest goes inside the manifest itself ETSI 3.3.1 section 5.3
+        final Map<String, byte[]> fileMap = nsdCsar.getFileMap().entrySet().stream()
+            .filter(entry -> !nsdCsar.isManifest(entry.getKey()))
+            .collect(Collectors.toMap(Entry::getKey, Entry::getValue));
+
+        for (final Entry<String, byte[]> fileEntry : fileMap.entrySet()) {
+            final byte[] signatureBytes = sign(fileEntry.getValue());
+            final String filePath = fileEntry.getKey();
+            nsdCsar.addFile(filePath + SIGNATURE_EXTENSION, signatureBytes);
+        }
+
+        signManifest(nsdCsar);
+    }
+
+    private void signManifest(final NsdCsar nsdCsar) throws NsdSignatureException {
+        final Optional<Entry<String, byte[]>> manifestEntryOpt = nsdCsar.getFileMap().entrySet().stream()
+            .filter(entry -> nsdCsar.isManifest(entry.getKey())).findFirst();
+        if (manifestEntryOpt.isEmpty()) {
+            return;
+        }
+        final CertificateInfo certificateInfo = getValidCertificate();
+
+        final Entry<String, byte[]> manifestEntry = manifestEntryOpt.get();
+        final String pemSignature = createFileSignature(certificateInfo.getCertificate(),
+            certificateInfo.getPrivateKey(), manifestEntry.getValue());
+        final NsdCsarManifestBuilder manifestBuilder = nsdCsar.getManifestBuilder();
+        manifestBuilder.withSignature(pemSignature);
+        nsdCsar.addManifest(manifestBuilder);
+    }
+
+    /**
+     * Sign a file, creating the PEM format signature and returning its bytes.
+     *
+     * @param fileBytes the file to sign
+     * @return the bytes of the PEM format signature created from the given file and the NSD certificate
+     * @throws NsdSignatureException when it was not possible to retrieve the NSD certificate
+     * @throws NsdSignatureException when the NSD certificate is invalid
+     * @throws NsdSignatureException it was not possible to sign the file
+     */
+    public byte[] sign(final byte[] fileBytes) throws NsdSignatureException {
+        final CertificateInfo certificateInfo = getValidCertificate();
+        final String pemSignature =
+            createFileSignature(certificateInfo.getCertificate(), certificateInfo.getPrivateKey(), fileBytes);
+        return pemSignature.getBytes(StandardCharsets.UTF_8);
+    }
+
+    public Optional<CertificateInfo> getSigningCertificate() {
+        final String sdcNsdCertName = environment.getProperty(SDC_NSD_CERT_NAME);
+        return certificateManager.getCertificate(sdcNsdCertName);
+    }
+
+    public boolean isCertificateConfigured() {
+        return getSigningCertificate().isPresent();
+    }
+
+    private CertificateInfo getValidCertificate() throws NsdSignatureException {
+        final Optional<CertificateInfo> certificateInfoOpt = getSigningCertificate();
+        if (certificateInfoOpt.isEmpty()) {
+            throw NsdSignatureExceptionSupplier.certificateNotConfigured();
+        }
+        final CertificateInfo certificateInfo = certificateInfoOpt.get();
+        if (!certificateInfo.isValid()) {
+            throw NsdSignatureExceptionSupplier.invalidCertificate(certificateInfo.getName());
+        }
+
+        return certificateInfo;
+    }
+
+    private String createFileSignature(final Certificate certificate, final Key privateKey,
+                                       final byte[] fileBytes) throws NsdSignatureException {
+        try {
+            final byte[] dataSignature = cmsContentSigner.signData(fileBytes, certificate, privateKey);
+            return cmsContentSigner.formatToPemSignature(dataSignature);
+        } catch (final CmsSignatureException e) {
+            throw NsdSignatureExceptionSupplier.unableToCreateSignature(e);
+        }
+    }
+}
diff --git a/catalog-be-plugins/etsi-nfv-nsd-csar-plugin/src/main/java/org/openecomp/sdc/be/plugins/etsi/nfv/nsd/security/exception/NsdSignatureException.java b/catalog-be-plugins/etsi-nfv-nsd-csar-plugin/src/main/java/org/openecomp/sdc/be/plugins/etsi/nfv/nsd/security/exception/NsdSignatureException.java
new file mode 100644
index 0000000000..1591a5e294
--- /dev/null
+++ b/catalog-be-plugins/etsi-nfv-nsd-csar-plugin/src/main/java/org/openecomp/sdc/be/plugins/etsi/nfv/nsd/security/exception/NsdSignatureException.java
@@ -0,0 +1,31 @@
+/*
+ * ============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.plugins.etsi.nfv.nsd.security.exception;
+
+public class NsdSignatureException extends Exception {
+
+    public NsdSignatureException(final String message) {
+        super(message);
+    }
+
+    public NsdSignatureException(final String message, final Throwable cause) {
+        super(message, cause);
+    }
+}
diff --git a/catalog-be-plugins/etsi-nfv-nsd-csar-plugin/src/main/java/org/openecomp/sdc/be/plugins/etsi/nfv/nsd/security/exception/NsdSignatureExceptionSupplier.java b/catalog-be-plugins/etsi-nfv-nsd-csar-plugin/src/main/java/org/openecomp/sdc/be/plugins/etsi/nfv/nsd/security/exception/NsdSignatureExceptionSupplier.java
new file mode 100644
index 0000000000..696a8d8626
--- /dev/null
+++ b/catalog-be-plugins/etsi-nfv-nsd-csar-plugin/src/main/java/org/openecomp/sdc/be/plugins/etsi/nfv/nsd/security/exception/NsdSignatureExceptionSupplier.java
@@ -0,0 +1,39 @@
+/*
+ * ============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.plugins.etsi.nfv.nsd.security.exception;
+
+public final class NsdSignatureExceptionSupplier {
+
+    private NsdSignatureExceptionSupplier() {
+    }
+
+    public static NsdSignatureException invalidCertificate(final String certificateName) {
+        return new NsdSignatureException(String.format("The certificate '%s' is invalid", certificateName));
+    }
+
+    public static NsdSignatureException certificateNotConfigured() {
+        return new NsdSignatureException("No certificate configured");
+    }
+
+    public static NsdSignatureException unableToCreateSignature(final Exception e) {
+        return new NsdSignatureException("Could create file signature", e);
+    }
+
+}
\ No newline at end of file
diff --git a/catalog-be-plugins/etsi-nfv-nsd-csar-plugin/src/test/java/org/openecomp/sdc/be/plugins/etsi/nfv/nsd/builder/NsdCsarManifestBuilderTest.java b/catalog-be-plugins/etsi-nfv-nsd-csar-plugin/src/test/java/org/openecomp/sdc/be/plugins/etsi/nfv/nsd/builder/NsdCsarManifestBuilderTest.java
index 1ff3a6d52b..caca932929 100644
--- a/catalog-be-plugins/etsi-nfv-nsd-csar-plugin/src/test/java/org/openecomp/sdc/be/plugins/etsi/nfv/nsd/builder/NsdCsarManifestBuilderTest.java
+++ b/catalog-be-plugins/etsi-nfv-nsd-csar-plugin/src/test/java/org/openecomp/sdc/be/plugins/etsi/nfv/nsd/builder/NsdCsarManifestBuilderTest.java
@@ -1,4 +1,3 @@
-
 /*
  * ============LICENSE_START=======================================================
  *  Copyright (C) 2021 Nordix Foundation
@@ -43,6 +42,10 @@ class NsdCsarManifestBuilderTest {
         nsdCsarManifestBuilder.withFileStructureVersion("fileStructureVersion");
         nsdCsarManifestBuilder.withCompatibleSpecificationVersion("1.0.0");
         nsdCsarManifestBuilder.withCompatibleSpecificationVersion("1.0.1");
+        final String signature = "-----BEGIN CMS-----\n"
+            + "12d08j19d981928129dj129j1\n"
+            + "-----END CMS-----";
+        nsdCsarManifestBuilder.withSignature(signature);
         final List<String> sourceList = new ArrayList<>();
         final String source1 = "Definitions/aSource1.yaml";
         sourceList.add(source1);
@@ -53,9 +56,16 @@ class NsdCsarManifestBuilderTest {
         assertSource(manifest, source1);
         assertSource(manifest, source2);
         assertCompatibleSpecificationVersions(manifest, "1.0.0,1.0.1");
-        final String expectedManifest = "metadata: \n" + "nsd_designer: designer\n" + "nsd_invariant_id: invariantId\n" + "nsd_name: name\n"
-            + "nsd_file_structure_version: fileStructureVersion\n" + "compatible_specification_versions: 1.0.0,1.0.1\n" + "\n"
-            + "Source: Definitions/aSource1.yaml\n" + "Source: Definitions/aSource2.yaml\n" + "";
+        final String expectedManifest = "metadata: \n"
+            + "nsd_designer: designer\n"
+            + "nsd_invariant_id: invariantId\n"
+            + "nsd_name: name\n"
+            + "nsd_file_structure_version: fileStructureVersion\n"
+            + "compatible_specification_versions: 1.0.0,1.0.1\n"
+            + "\n"
+            + "Source: Definitions/aSource1.yaml\n"
+            + "Source: Definitions/aSource2.yaml\n"
+            + signature;
         assertEquals(expectedManifest, manifest);
     }
 
diff --git a/catalog-be-plugins/etsi-nfv-nsd-csar-plugin/src/test/java/org/openecomp/sdc/be/plugins/etsi/nfv/nsd/generator/EtsiNfvNsCsarEntryGeneratorTest.java b/catalog-be-plugins/etsi-nfv-nsd-csar-plugin/src/test/java/org/openecomp/sdc/be/plugins/etsi/nfv/nsd/generator/EtsiNfvNsCsarEntryGeneratorTest.java
index 8ebd1df190..837179d50d 100644
--- a/catalog-be-plugins/etsi-nfv-nsd-csar-plugin/src/test/java/org/openecomp/sdc/be/plugins/etsi/nfv/nsd/generator/EtsiNfvNsCsarEntryGeneratorTest.java
+++ b/catalog-be-plugins/etsi-nfv-nsd-csar-plugin/src/test/java/org/openecomp/sdc/be/plugins/etsi/nfv/nsd/generator/EtsiNfvNsCsarEntryGeneratorTest.java
@@ -1,4 +1,3 @@
-
 /*
  * ============LICENSE_START=======================================================
  *  Copyright (C) 2020 Nordix Foundation
@@ -27,6 +26,7 @@ import static org.mockito.Mockito.when;
 import static org.openecomp.sdc.be.plugins.etsi.nfv.nsd.generator.EtsiNfvNsCsarEntryGenerator.ETSI_NS_COMPONENT_CATEGORY;
 import static org.openecomp.sdc.be.plugins.etsi.nfv.nsd.generator.EtsiNfvNsCsarEntryGenerator.ETSI_VERSION_METADATA;
 import static org.openecomp.sdc.be.plugins.etsi.nfv.nsd.generator.EtsiNfvNsCsarEntryGenerator.NSD_FILE_PATH_FORMAT;
+import static org.openecomp.sdc.be.plugins.etsi.nfv.nsd.generator.EtsiNfvNsCsarEntryGenerator.UNSIGNED_CSAR_EXTENSION;
 import static org.openecomp.sdc.common.api.ArtifactTypeEnum.ETSI_PACKAGE;
 
 import java.util.ArrayList;
@@ -44,6 +44,7 @@ import org.openecomp.sdc.be.model.category.CategoryDefinition;
 import org.openecomp.sdc.be.plugins.etsi.nfv.nsd.exception.NsdException;
 import org.openecomp.sdc.be.plugins.etsi.nfv.nsd.factory.EtsiNfvNsdCsarGeneratorFactory;
 import org.openecomp.sdc.be.plugins.etsi.nfv.nsd.generator.config.EtsiVersion;
+import org.openecomp.sdc.be.plugins.etsi.nfv.nsd.model.NsdCsar;
 
 class EtsiNfvNsCsarEntryGeneratorTest {
 
@@ -68,12 +69,14 @@ class EtsiNfvNsCsarEntryGeneratorTest {
     @Test
     void successfullyEntryGenerationTest() throws NsdException {
         mockServiceComponent();
-        final byte[] expectedNsdCsar = new byte[5];
-        when(etsiNfvNsdCsarGenerator.generateNsdCsar(service)).thenReturn(expectedNsdCsar);
+        final NsdCsar nsdCsar = new NsdCsar(SERVICE_NORMALIZED_NAME);
+        nsdCsar.setCsarPackage(new byte[5]);
+        when(etsiNfvNsdCsarGenerator.generateNsdCsar(service)).thenReturn(nsdCsar);
         final Map<String, byte[]> entryMap = etsiNfvNsCsarEntryGenerator.generateCsarEntries(service);
         assertThat("Csar Entries should contain only one entry", entryMap.size(), is(1));
         assertThat("Csar Entries should contain the expected entry", entryMap,
-            hasEntry(String.format(NSD_FILE_PATH_FORMAT, ETSI_PACKAGE, SERVICE_NORMALIZED_NAME), expectedNsdCsar));
+            hasEntry(String.format(NSD_FILE_PATH_FORMAT, ETSI_PACKAGE, SERVICE_NORMALIZED_NAME, UNSIGNED_CSAR_EXTENSION),
+                nsdCsar.getCsarPackage()));
     }
 
     @Test
diff --git a/catalog-be-plugins/etsi-nfv-nsd-csar-plugin/src/test/java/org/openecomp/sdc/be/plugins/etsi/nfv/nsd/generator/EtsiNfvNsdCsarGeneratorImplTest.java b/catalog-be-plugins/etsi-nfv-nsd-csar-plugin/src/test/java/org/openecomp/sdc/be/plugins/etsi/nfv/nsd/generator/EtsiNfvNsdCsarGeneratorImplTest.java
index b498c45d1f..b1b8157534 100644
--- a/catalog-be-plugins/etsi-nfv-nsd-csar-plugin/src/test/java/org/openecomp/sdc/be/plugins/etsi/nfv/nsd/generator/EtsiNfvNsdCsarGeneratorImplTest.java
+++ b/catalog-be-plugins/etsi-nfv-nsd-csar-plugin/src/test/java/org/openecomp/sdc/be/plugins/etsi/nfv/nsd/generator/EtsiNfvNsdCsarGeneratorImplTest.java
@@ -1,4 +1,3 @@
-
 /*
  * ============LICENSE_START=======================================================
  *  Copyright (C) 2020 Nordix Foundation
@@ -23,12 +22,16 @@ import static org.hamcrest.MatcherAssert.assertThat;
 import static org.hamcrest.core.Is.is;
 import static org.hamcrest.core.IsNull.notNullValue;
 import static org.junit.jupiter.api.Assertions.assertThrows;
+import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.when;
 import static org.openecomp.sdc.be.plugins.etsi.nfv.nsd.generator.EtsiNfvNsCsarEntryGenerator.ETSI_NS_COMPONENT_CATEGORY;
 import static org.openecomp.sdc.common.api.ArtifactTypeEnum.ONBOARDED_PACKAGE;
 
 import fj.data.Either;
+import java.io.File;
+import java.nio.charset.StandardCharsets;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.HashMap;
@@ -39,6 +42,7 @@ import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 import org.mockito.Mock;
 import org.mockito.MockitoAnnotations;
+import org.openecomp.sdc.be.csar.security.model.CertificateInfoImpl;
 import org.openecomp.sdc.be.dao.cassandra.ArtifactCassandraDao;
 import org.openecomp.sdc.be.datatypes.enums.ComponentTypeEnum;
 import org.openecomp.sdc.be.datatypes.enums.JsonPresentationFields;
@@ -52,7 +56,10 @@ import org.openecomp.sdc.be.plugins.etsi.nfv.nsd.factory.NsDescriptorGeneratorFa
 import org.openecomp.sdc.be.plugins.etsi.nfv.nsd.generator.config.EtsiVersion;
 import org.openecomp.sdc.be.plugins.etsi.nfv.nsd.generator.config.NsDescriptorConfig;
 import org.openecomp.sdc.be.plugins.etsi.nfv.nsd.model.Nsd;
+import org.openecomp.sdc.be.plugins.etsi.nfv.nsd.model.NsdCsar;
 import org.openecomp.sdc.be.plugins.etsi.nfv.nsd.model.VnfDescriptor;
+import org.openecomp.sdc.be.plugins.etsi.nfv.nsd.security.NsdCsarEtsiOption2Signer;
+import org.openecomp.sdc.be.plugins.etsi.nfv.nsd.security.exception.NsdSignatureException;
 import org.openecomp.sdc.be.resources.data.DAOArtifactData;
 
 class EtsiNfvNsdCsarGeneratorImplTest {
@@ -67,6 +74,8 @@ class EtsiNfvNsdCsarGeneratorImplTest {
     @Mock
     private ArtifactCassandraDao artifactCassandraDao;
     @Mock
+    private NsdCsarEtsiOption2Signer nsdCsarEtsiOption2Signer;
+    @Mock
     private Service service;
     private EtsiNfvNsdCsarGeneratorImpl etsiNfvNsdCsarGenerator;
 
@@ -74,8 +83,8 @@ class EtsiNfvNsdCsarGeneratorImplTest {
     void setUp() {
         MockitoAnnotations.initMocks(this);
         final EtsiVersion version2_5_1 = EtsiVersion.VERSION_2_5_1;
-        etsiNfvNsdCsarGenerator = new EtsiNfvNsdCsarGeneratorImpl(new NsDescriptorConfig(version2_5_1), vnfDescriptorGenerator,
-            nsDescriptorGeneratorFactory, artifactCassandraDao);
+        etsiNfvNsdCsarGenerator = new EtsiNfvNsdCsarGeneratorImpl(new NsDescriptorConfig(version2_5_1),
+            vnfDescriptorGenerator, nsDescriptorGeneratorFactory, artifactCassandraDao, nsdCsarEtsiOption2Signer);
         when(nsDescriptorGeneratorFactory.create()).thenReturn(nsDescriptorGeneratorImpl);
     }
 
@@ -83,8 +92,29 @@ class EtsiNfvNsdCsarGeneratorImplTest {
     void generateNsdCsarSuccessfulTest() throws VnfDescriptorException, NsdException {
         mockServiceComponent();
         mockServiceComponentArtifacts();
-        final byte[] nsdCsar = etsiNfvNsdCsarGenerator.generateNsdCsar(service);
-        assertThat("", nsdCsar, is(notNullValue()));
+        final NsdCsar nsdCsar = etsiNfvNsdCsarGenerator.generateNsdCsar(service);
+        assertThat("The NSD CSAR should not be null", nsdCsar, is(notNullValue()));
+        assertThat("The NSD CSAR should not be signed", nsdCsar.isSigned(), is(false));
+        assertThat("The NSD CSAR content should not be null", nsdCsar.getCsarPackage(), is(notNullValue()));
+    }
+
+    @Test
+    void generateSignedNsdCsarSuccessfulTest() throws VnfDescriptorException, NsdException, NsdSignatureException {
+        mockServiceComponent();
+        mockServiceComponentArtifacts();
+        when(nsdCsarEtsiOption2Signer.isCertificateConfigured()).thenReturn(true);
+        final String path = getClass().getClassLoader().getResource("aFile.txt").getPath();
+        System.out.println(path);
+        final CertificateInfoImpl certificateInfo = new CertificateInfoImpl(new File(path), null);
+        when(nsdCsarEtsiOption2Signer.getSigningCertificate()).thenReturn(Optional.of(certificateInfo));
+        when(nsdCsarEtsiOption2Signer.sign(any(byte[].class))).thenReturn("signedCsar".getBytes(StandardCharsets.UTF_8));
+        final NsdCsar nsdCsar = etsiNfvNsdCsarGenerator.generateNsdCsar(service);
+        verify(nsdCsarEtsiOption2Signer).signArtifacts(any(NsdCsar.class));
+        assertThat("The NSD CSAR should not be null", nsdCsar, is(notNullValue()));
+        assertThat("The NSD CSAR should be signed", nsdCsar.isSigned(), is(true));
+        assertThat("The NSD CSAR content should not be null", nsdCsar.getCsarPackage(), is(notNullValue()));
+        assertThat("The NSD CSAR name should be as expected", nsdCsar.getFileName(), is(SERVICE_NORMALIZED_NAME));
+        assertThat("The NSD CSAR name should be as expected", nsdCsar.isEmpty(), is(false));
     }
 
     @Test()
@@ -103,6 +133,7 @@ class EtsiNfvNsdCsarGeneratorImplTest {
         final Nsd nsd = new Nsd();
         when(vnfDescriptorGenerator.generate(componentInstance1Name, instanceArtifact1)).thenReturn(Optional.of(vnfDescriptor1));
         when(nsDescriptorGeneratorImpl.generate(service, vnfDescriptorList)).thenReturn(Optional.of(nsd));
+
         final List<CategoryDefinition> categoryDefinitionList = new ArrayList<>();
         final CategoryDefinition nsComponentCategoryDefinition = new CategoryDefinition();
         nsComponentCategoryDefinition.setName(ETSI_NS_COMPONENT_CATEGORY);
diff --git a/catalog-be-plugins/etsi-nfv-nsd-csar-plugin/src/test/java/org/openecomp/sdc/be/plugins/etsi/nfv/nsd/model/NsdCsarTest.java b/catalog-be-plugins/etsi-nfv-nsd-csar-plugin/src/test/java/org/openecomp/sdc/be/plugins/etsi/nfv/nsd/model/NsdCsarTest.java
new file mode 100644
index 0000000000..061a52a2dc
--- /dev/null
+++ b/catalog-be-plugins/etsi-nfv-nsd-csar-plugin/src/test/java/org/openecomp/sdc/be/plugins/etsi/nfv/nsd/model/NsdCsarTest.java
@@ -0,0 +1,140 @@
+/*
+ * ============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.plugins.etsi.nfv.nsd.model;
+
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.is;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertNull;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import java.nio.charset.StandardCharsets;
+import java.util.HashMap;
+import java.util.Map;
+import org.junit.jupiter.api.Test;
+import org.openecomp.sdc.be.plugins.etsi.nfv.nsd.builder.NsdCsarManifestBuilder;
+
+class NsdCsarTest {
+
+    @Test
+    void testAddFile() {
+        final NsdCsar nsdCsar = new NsdCsar("");
+        assertTrue(nsdCsar.getFileMap().isEmpty());
+        final String aFilePath = "aFile";
+        final byte[] fileContent = aFilePath.getBytes(StandardCharsets.UTF_8);
+        nsdCsar.addFile(aFilePath, fileContent);
+        assertEquals(1, nsdCsar.getFileMap().size());
+        assertEquals(fileContent, nsdCsar.getFile(aFilePath));
+    }
+
+    @Test
+    void testGetFile() {
+        final NsdCsar nsdCsar = new NsdCsar("");
+        final String aFilePath = "aFile";
+        assertNull(nsdCsar.getFile(aFilePath));
+        final byte[] fileContent = aFilePath.getBytes(StandardCharsets.UTF_8);
+        nsdCsar.addFile(aFilePath, fileContent);
+        assertEquals(1, nsdCsar.getFileMap().size());
+        assertEquals(fileContent, nsdCsar.getFile(aFilePath));
+    }
+
+    @Test
+    void testIsManifest() {
+        final NsdCsar nsdCsar = new NsdCsar("");
+        assertTrue(nsdCsar.isManifest(nsdCsar.getManifestPath()));
+        assertFalse(nsdCsar.isManifest(""));
+    }
+
+    @Test
+    void testGetManifest() {
+        final NsdCsar nsdCsar = new NsdCsar("");
+        assertNull(nsdCsar.getManifest());
+        final byte[] expectedManifest = "".getBytes(StandardCharsets.UTF_8);
+        nsdCsar.addFile(nsdCsar.getManifestPath(), expectedManifest);
+        final byte[] actualManifest = nsdCsar.getManifest();
+        assertNotNull(actualManifest);
+        assertEquals(actualManifest, expectedManifest);
+    }
+
+    @Test
+    void testGetMainDefinition() {
+        final String csarFileName = "csarFileName";
+        final NsdCsar nsdCsar = new NsdCsar(csarFileName);
+        assertNull(nsdCsar.getMainDefinition());
+        assertTrue(nsdCsar.getMainDefinitionPath().contains(csarFileName));
+        final byte[] expectedMainDefinition = "".getBytes(StandardCharsets.UTF_8);
+        nsdCsar.addFile(nsdCsar.getMainDefinitionPath(), expectedMainDefinition);
+        final byte[] actualMainDefinition = nsdCsar.getMainDefinition();
+        assertNotNull(actualMainDefinition);
+        assertEquals(actualMainDefinition, expectedMainDefinition);
+    }
+
+    @Test
+    void testFileMapEncapsulation() {
+        final NsdCsar nsdCsar = new NsdCsar("");
+        final Map<String, byte[]> fileMap = nsdCsar.getFileMap();
+        fileMap.put("", new byte[]{});
+        assertTrue(nsdCsar.getFileMap().isEmpty());
+    }
+
+    @Test
+    void addAllFiles() {
+        final NsdCsar nsdCsar = new NsdCsar("");
+        assertTrue(nsdCsar.isEmpty());
+        Map<String, byte[]> fileMap = new HashMap();
+        fileMap.put("1", new byte[]{});
+        fileMap.put("2", new byte[]{});
+        fileMap.put("3", new byte[]{});
+        fileMap.put("4", new byte[]{});
+        nsdCsar.addAllFiles(fileMap);
+        assertFalse(nsdCsar.isEmpty());
+        assertEquals(nsdCsar.getFileMap().size(), fileMap.size());
+    }
+
+    @Test
+    void testIfStartsEmpty() {
+        final NsdCsar nsdCsar = new NsdCsar("test");
+        assertTrue(nsdCsar.getFileMap().isEmpty(), "Csar should starts empty");
+        assertTrue(nsdCsar.isEmpty(), "Csar should starts empty");
+    }
+
+    @Test
+    void testIsEmpty() {
+        final NsdCsar nsdCsar = new NsdCsar("test");
+        assertTrue(nsdCsar.isEmpty());
+        nsdCsar.addFile("", new byte[]{});
+        assertFalse(nsdCsar.isEmpty());
+    }
+
+    @Test
+    void testAddManifest() {
+        final NsdCsar nsdCsar = new NsdCsar("test");
+        nsdCsar.addManifest(null);
+        assertTrue(nsdCsar.isEmpty());
+        final NsdCsarManifestBuilder manifestBuilder = new NsdCsarManifestBuilder();
+        nsdCsar.addManifest(manifestBuilder);
+        assertFalse(nsdCsar.isEmpty());
+        assertEquals(1, nsdCsar.getFileMap().size());
+        final byte[] expectedManifestContent = manifestBuilder.build().getBytes(StandardCharsets.UTF_8);
+        assertThat("Manifest content should be the same", nsdCsar.getManifest(), is(expectedManifestContent));
+    }
+}
\ No newline at end of file
diff --git a/catalog-be-plugins/etsi-nfv-nsd-csar-plugin/src/test/java/org/openecomp/sdc/be/plugins/etsi/nfv/nsd/security/NsdCsarEtsiOption2SignerTest.java b/catalog-be-plugins/etsi-nfv-nsd-csar-plugin/src/test/java/org/openecomp/sdc/be/plugins/etsi/nfv/nsd/security/NsdCsarEtsiOption2SignerTest.java
new file mode 100644
index 0000000000..e6e89574f9
--- /dev/null
+++ b/catalog-be-plugins/etsi-nfv-nsd-csar-plugin/src/test/java/org/openecomp/sdc/be/plugins/etsi/nfv/nsd/security/NsdCsarEtsiOption2SignerTest.java
@@ -0,0 +1,183 @@
+/*
+ * ============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.plugins.etsi.nfv.nsd.security;
+
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.hasSize;
+import static org.hamcrest.Matchers.is;
+import static org.hamcrest.Matchers.nullValue;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.ArgumentMatchers.eq;
+import static org.mockito.Mockito.when;
+import static org.openecomp.sdc.be.plugins.etsi.nfv.nsd.security.NsdCsarEtsiOption2Signer.SDC_NSD_CERT_NAME;
+import static org.openecomp.sdc.be.plugins.etsi.nfv.nsd.security.NsdCsarEtsiOption2Signer.SIGNATURE_EXTENSION;
+import static org.openecomp.sdc.be.plugins.etsi.nfv.nsd.security.exception.NsdSignatureExceptionSupplier.certificateNotConfigured;
+import static org.openecomp.sdc.be.plugins.etsi.nfv.nsd.security.exception.NsdSignatureExceptionSupplier.invalidCertificate;
+import static org.openecomp.sdc.be.plugins.etsi.nfv.nsd.security.exception.NsdSignatureExceptionSupplier.unableToCreateSignature;
+
+import java.nio.charset.StandardCharsets;
+import java.util.Optional;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.mockito.InjectMocks;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.openecomp.sdc.be.csar.security.api.CertificateManager;
+import org.openecomp.sdc.be.csar.security.api.CmsContentSigner;
+import org.openecomp.sdc.be.csar.security.api.model.CertificateInfo;
+import org.openecomp.sdc.be.csar.security.exception.CmsSignatureException;
+import org.openecomp.sdc.be.plugins.etsi.nfv.nsd.model.NsdCsar;
+import org.openecomp.sdc.be.plugins.etsi.nfv.nsd.security.exception.NsdSignatureException;
+import org.springframework.core.env.Environment;
+
+class NsdCsarEtsiOption2SignerTest {
+
+    private static final String CERT_NAME = "nsdCert";
+
+    @Mock
+    private CertificateManager certificateManager;
+    @Mock
+    private CmsContentSigner cmsContentSigner;
+    @Mock
+    private Environment environment;
+    @Mock
+    private CertificateInfo certificateInfo;
+    @InjectMocks
+    private NsdCsarEtsiOption2Signer nsdCsarEtsiOption2Signer;
+
+    @BeforeEach
+    void setUp() {
+        MockitoAnnotations.initMocks(this);
+        when(environment.getProperty(SDC_NSD_CERT_NAME)).thenReturn(CERT_NAME);
+        when(certificateManager.getCertificate(CERT_NAME)).thenReturn(Optional.of(certificateInfo));
+        when(certificateInfo.isValid()).thenReturn(true);
+    }
+
+    @Test
+    void signNsdTest() throws NsdSignatureException, CmsSignatureException {
+        final NsdCsar nsdCsar = new NsdCsar("");
+        nsdCsar.addFile("aFile", "aFile".getBytes(StandardCharsets.UTF_8));
+        final byte[] aFileSigned = "aFileSigned".getBytes(StandardCharsets.UTF_8);
+        when(cmsContentSigner.signData(eq("aFile".getBytes(StandardCharsets.UTF_8)), any(), any())).thenReturn(
+            aFileSigned);
+        final String aFileSignedPemString = "aFileSignedPemString";
+        when(cmsContentSigner.formatToPemSignature(aFileSigned)).thenReturn(aFileSignedPemString);
+        nsdCsarEtsiOption2Signer.signArtifacts(nsdCsar);
+        assertThat("The NSD CSAR should contain the original file and its signature",
+            nsdCsar.getFileMap().keySet(), hasSize(2));
+        assertThat("The signed file should be as expected",
+            nsdCsar.getFile("aFile" + SIGNATURE_EXTENSION), is(aFileSignedPemString.getBytes(StandardCharsets.UTF_8)));
+    }
+
+    @Test
+    void dontCreateNsdManifestSignatureFileTest() throws NsdSignatureException {
+        final NsdCsar nsdCsar = new NsdCsar("nsdCsar");
+        nsdCsar.addFile(nsdCsar.getManifestPath(), "manifest".getBytes(StandardCharsets.UTF_8));
+        nsdCsarEtsiOption2Signer.signArtifacts(nsdCsar);
+        assertThat("The NSD CSAR should contain only the original file",
+            nsdCsar.getFileMap().keySet(), hasSize(1));
+        assertThat("The NSD CSAR should not contain the manifest signature file",
+            nsdCsar.getFile(nsdCsar.getManifestPath() + SIGNATURE_EXTENSION), is(nullValue()));
+    }
+
+    @Test
+    void signEmptyNsdTest() throws NsdSignatureException {
+        final NsdCsar nsdCsar = new NsdCsar("");
+        nsdCsarEtsiOption2Signer.signArtifacts(nsdCsar);
+        assertThat("The NSD CSAR should continue empty", nsdCsar.isEmpty(), is(true));
+    }
+
+    @Test
+    void signNsdNoCertificateTest() {
+        when(certificateManager.getCertificate(CERT_NAME)).thenReturn(Optional.empty());
+        final NsdCsar nsdCsar = new NsdCsar("");
+        nsdCsar.addFile("anyFile", "anyFile".getBytes());
+        final NsdSignatureException actualException = assertThrows(NsdSignatureException.class,
+            () -> nsdCsarEtsiOption2Signer.signArtifacts(nsdCsar));
+        assertThat(actualException.getMessage(), is(certificateNotConfigured().getMessage()));
+    }
+
+    @Test
+    void signWholeNoCertificateTest() {
+        when(certificateManager.getCertificate(CERT_NAME)).thenReturn(Optional.empty());
+        final NsdSignatureException actualException =
+            Assertions.assertThrows(NsdSignatureException.class,
+                () -> nsdCsarEtsiOption2Signer.sign(new byte[]{}));
+        assertThat(actualException.getMessage(), is(certificateNotConfigured().getMessage()));
+    }
+
+    @Test
+    void signWithInvalidCertificateTest() {
+        when(certificateInfo.isValid()).thenReturn(false);
+        final NsdSignatureException actualException =
+            Assertions.assertThrows(NsdSignatureException.class,
+                () -> nsdCsarEtsiOption2Signer.sign(new byte[]{}));
+        assertThat(actualException.getMessage(), is(invalidCertificate(null).getMessage()));
+    }
+
+    @Test
+    void signWholeFileTest() throws NsdSignatureException, CmsSignatureException {
+        final byte[] nsdCsarBytes = "nsdCsarBytes".getBytes(StandardCharsets.UTF_8);
+        final NsdCsar nsdCsar = new NsdCsar("");
+        nsdCsar.addFile("aFile", "aFile".getBytes(StandardCharsets.UTF_8));
+        final byte[] nsdCsarBytesSigned = "nsdCsarBytesSigned".getBytes(StandardCharsets.UTF_8);
+        when(cmsContentSigner.signData(eq(nsdCsarBytes), any(), any())).thenReturn(nsdCsarBytesSigned);
+        final String nsdCsarBytesSignedPemString = "nsdCsarBytesSignedPemString";
+        when(cmsContentSigner.formatToPemSignature(nsdCsarBytesSigned)).thenReturn(nsdCsarBytesSignedPemString);
+        final byte[] actualNsdSignedCsar = nsdCsarEtsiOption2Signer.sign(nsdCsarBytes);
+        assertThat("Signature should be as expected",
+            actualNsdSignedCsar, is(nsdCsarBytesSignedPemString.getBytes(StandardCharsets.UTF_8)));
+    }
+
+    @Test
+    void signatureCreationErrorTest() throws CmsSignatureException {
+        final byte[] nsdCsarBytes = "nsdCsarBytes".getBytes(StandardCharsets.UTF_8);
+        final NsdCsar nsdCsar = new NsdCsar("");
+        nsdCsar.addFile("aFile", "aFile".getBytes(StandardCharsets.UTF_8));
+        when(cmsContentSigner.signData(eq(nsdCsarBytes), any(), any()))
+            .thenThrow(new CmsSignatureException(null, null));
+        final NsdSignatureException actualException = assertThrows(NsdSignatureException.class,
+            () -> nsdCsarEtsiOption2Signer.sign(nsdCsarBytes));
+        assertThat(actualException.getMessage(), is(unableToCreateSignature(null).getMessage()));
+    }
+
+    @Test
+    void getSigningCertificateTest() {
+        when(certificateManager.getCertificate(CERT_NAME)).thenReturn(Optional.empty());
+        Optional<CertificateInfo> signingCertificate = nsdCsarEtsiOption2Signer.getSigningCertificate();
+        assertThat("Certificate should not be present", signingCertificate.isEmpty(), is(true));
+        when(certificateManager.getCertificate(CERT_NAME)).thenReturn(Optional.of(certificateInfo));
+        signingCertificate = nsdCsarEtsiOption2Signer.getSigningCertificate();
+        assertThat("Certificate should be present", signingCertificate.isPresent(), is(true));
+        assertThat("Certificate should be as expected", signingCertificate.get(), is(certificateInfo));
+    }
+
+    @Test
+    void isCertificateConfiguredTest() {
+        when(certificateManager.getCertificate(CERT_NAME)).thenReturn(Optional.empty());
+        boolean isCertificateConfigured = nsdCsarEtsiOption2Signer.isCertificateConfigured();
+        assertThat("Certificate should not be configured", isCertificateConfigured, is(false));
+        when(certificateManager.getCertificate(CERT_NAME)).thenReturn(Optional.of(certificateInfo));
+        isCertificateConfigured = nsdCsarEtsiOption2Signer.isCertificateConfigured();
+        assertThat("Certificate should be configured", isCertificateConfigured, is(true));
+    }
+}
\ No newline at end of file
diff --git a/catalog-be-plugins/etsi-nfv-nsd-csar-plugin/src/test/resources/aFile.txt b/catalog-be-plugins/etsi-nfv-nsd-csar-plugin/src/test/resources/aFile.txt
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/catalog-be-plugins/etsi-nfv-nsd-csar-plugin/src/test/resources/aFile.txt