Implementation of KeyPair generation

Issue-ID: AAF-996
Change-Id: I97626d122033127d5bb234d134c20d0b5a6d7c03
Signed-off-by: kjaniak <kornel.janiak@nokia.com>

3 files changed, 112 insertions, 0 deletions

diff --git a/certServiceClient/src/main/java/org/onap/aaf/certservice/client/certification/EncryptionAlgorithmConstants.java b/certServiceClient/src/main/java/org/onap/aaf/certservice/client/certification/EncryptionAlgorithmConstants.java
new file mode 100644
index 00000000..2afdbee0
--- /dev/null
+++ b/certServiceClient/src/main/java/org/onap/aaf/certservice/client/certification/EncryptionAlgorithmConstants.java
@@ -0,0 +1,24 @@
+/*============LICENSE_START=======================================================
+ * aaf-certservice-client
+ * ================================================================================
+ * Copyright (C) 2020 Nokia. All rights reserved.
+ * ================================================================================
+ * 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.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.aaf.certservice.client.certification;
+
+public class EncryptionAlgorithmConstants {
+    public static final String RSA_ENCRYPTION_ALGORITHM = "RSA";
+    public static final int KEY_SIZE = 2048;
+}
diff --git a/certServiceClient/src/main/java/org/onap/aaf/certservice/client/certification/KeyPairFactory.java b/certServiceClient/src/main/java/org/onap/aaf/certservice/client/certification/KeyPairFactory.java
new file mode 100644
index 00000000..6ad6528a
--- /dev/null
+++ b/certServiceClient/src/main/java/org/onap/aaf/certservice/client/certification/KeyPairFactory.java
@@ -0,0 +1,54 @@
+/*============LICENSE_START=======================================================
+ * aaf-certservice-client
+ * ================================================================================
+ * Copyright (C) 2020 Nokia. All rights reserved.
+ * ================================================================================
+ * 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.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.aaf.certservice.client.certification;
+
+import org.onap.aaf.certservice.client.certification.exception.KeyPairGenerationException;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.security.KeyPair;
+import java.security.KeyPairGenerator;
+import java.security.NoSuchAlgorithmException;
+
+public class KeyPairFactory {
+
+    private final Logger LOGGER = LoggerFactory.getLogger(KeyPairFactory.class);
+    private final String encryptionAlgorithm;
+    private final int keySize;
+
+    public KeyPairFactory(String encryptionAlgorithm, int keySize) {
+        this.encryptionAlgorithm = encryptionAlgorithm;
+        this.keySize = keySize;
+    }
+
+    public KeyPair create() {
+        try {
+            return createKeyPairGenerator().generateKeyPair();
+        } catch (NoSuchAlgorithmException e) {
+            LOGGER.error("Generation of KeyPair failed, exception message: " + e.getMessage());
+            throw new KeyPairGenerationException(e);
+        }
+    }
+
+    private KeyPairGenerator createKeyPairGenerator() throws NoSuchAlgorithmException {
+        KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance(encryptionAlgorithm);
+        keyPairGenerator.initialize(keySize);
+        return keyPairGenerator;
+    }
+}
diff --git a/certServiceClient/src/main/java/org/onap/aaf/certservice/client/certification/exception/KeyPairGenerationException.java b/certServiceClient/src/main/java/org/onap/aaf/certservice/client/certification/exception/KeyPairGenerationException.java
new file mode 100644
index 00000000..6af69889
--- /dev/null
+++ b/certServiceClient/src/main/java/org/onap/aaf/certservice/client/certification/exception/KeyPairGenerationException.java
@@ -0,0 +1,34 @@
+/*============LICENSE_START=======================================================
+ * aaf-certservice-client
+ * ================================================================================
+ * Copyright (C) 2020 Nokia. All rights reserved.
+ * ================================================================================
+ * 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.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.aaf.certservice.client.certification.exception;
+
+import org.onap.aaf.certservice.client.api.ExitCode;
+import org.onap.aaf.certservice.client.api.ExitableException;
+
+public class KeyPairGenerationException extends ExitableException {
+    private static final ExitCode EXIT_CODE = ExitCode.KEY_PAIR_GENERATION_EXCEPTION;
+
+    public KeyPairGenerationException(Throwable e) {
+        super(e);
+    }
+
+    public int applicationExitCode() {
+        return EXIT_CODE.getValue();
+    }
+}