1 files changed, 53 insertions, 0 deletions
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));
+    }
+
+}