1 files changed, 70 insertions, 0 deletions
diff --git a/certService/src/main/java/org/onap/oom/certservice/certification/conversion/CsrModelFactory.java b/certService/src/main/java/org/onap/oom/certservice/certification/conversion/CsrModelFactory.java
new file mode 100644
index 00000000..e4ee4c10
--- /dev/null
+++ b/certService/src/main/java/org/onap/oom/certservice/certification/conversion/CsrModelFactory.java
@@ -0,0 +1,70 @@
+/*
+ * ============LICENSE_START=======================================================
+ * Cert Service
+ * ================================================================================
+ * Copyright (C) 2020-2021 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.oom.certservice.certification.conversion;
+
+import org.bouncycastle.pkcs.PKCS10CertificationRequest;
+import org.bouncycastle.util.io.pem.PemObject;
+import org.onap.oom.certservice.certification.exception.CsrDecryptionException;
+import org.onap.oom.certservice.certification.exception.DecryptionException;
+import org.onap.oom.certservice.certification.exception.KeyDecryptionException;
+import org.onap.oom.certservice.certification.model.CsrModel;
+import org.springframework.stereotype.Service;
+
+
+@Service
+public class CsrModelFactory {
+
+    private final PemObjectFactory pemObjectFactory
+            = new PemObjectFactory();
+    private final Pkcs10CertificationRequestFactory certificationRequestFactory
+            = new Pkcs10CertificationRequestFactory();
+
+
+    public CsrModel createCsrModel(StringBase64 csr, StringBase64 privateKey)
+            throws DecryptionException {
+        PKCS10CertificationRequest decodedCsr = decodeCsr(csr);
+        PemObject decodedPrivateKey = decodePrivateKey(privateKey);
+        return new CsrModel.CsrModelBuilder(decodedCsr, decodedPrivateKey).build();
+    }
+
+    private PemObject decodePrivateKey(StringBase64 privateKey)
+            throws KeyDecryptionException {
+
+        return privateKey.asString()
+                .flatMap(pemObjectFactory::createPemObject)
+                .orElseThrow(
+                        () -> new KeyDecryptionException("Incorrect Key, decryption failed")
+                );
+    }
+
+    private PKCS10CertificationRequest decodeCsr(StringBase64 csr)
+            throws CsrDecryptionException {
+        return csr.asString()
+                .flatMap(pemObjectFactory::createPemObject)
+                .flatMap(certificationRequestFactory::createPkcs10CertificationRequest)
+                .orElseThrow(
+                        () -> new CsrDecryptionException("Incorrect CSR, decryption failed")
+                );
+    }
+
+}
+
+