1 files changed, 70 insertions, 0 deletions
diff --git a/certService/src/main/java/org/onap/aaf/certservice/certification/CsrModelFactory.java b/certService/src/main/java/org/onap/aaf/certservice/certification/CsrModelFactory.java
new file mode 100644
index 00000000..80858f4d
--- /dev/null
+++ b/certService/src/main/java/org/onap/aaf/certservice/certification/CsrModelFactory.java
@@ -0,0 +1,70 @@
+/*
+ * ============LICENSE_START=======================================================
+ * PROJECT
+ * ================================================================================
+ * 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.certification;
+
+import java.io.IOException;
+import java.util.Base64;
+
+import org.bouncycastle.pkcs.PKCS10CertificationRequest;
+import org.bouncycastle.util.io.pem.PemObject;
+import org.onap.aaf.certservice.certification.exceptions.CsrDecryptionException;
+import org.onap.aaf.certservice.certification.model.CsrModel;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.stereotype.Service;
+
+
+@Service
+public class CsrModelFactory {
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(CsrModelFactory.class);
+    private final PemObjectFactory pemObjectFactory = new PemObjectFactory();
+
+    public CsrModel createCsrModel(StringBase64 csr, StringBase64 privateKey) throws CsrDecryptionException {
+        LOGGER.debug("Decoded CSR: \n{}", csr.asString());
+
+        try {
+            PemObject pemObject = pemObjectFactory.createPmObject(csr.asString());
+            PKCS10CertificationRequest decodedCsr = new PKCS10CertificationRequest(
+                    pemObject.getContent()
+            );
+            PemObject decodedPrivateKey = pemObjectFactory.createPmObject(privateKey.asString());
+            return new CsrModel(decodedCsr, decodedPrivateKey);
+        } catch (IOException e) {
+            throw new CsrDecryptionException("Incorrect CSR, decryption failed", e);
+        }
+    }
+
+    public static class StringBase64 {
+        private final String value;
+        private final Base64.Decoder decoder = Base64.getDecoder();
+
+        public StringBase64(String value) {
+            this.value = value;
+        }
+
+        public String asString() {
+            return new String(decoder.decode(value));
+        }
+    }
+}
+
+