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test/org/apache/catalina/startup/FastNonSecureRandom.java

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+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.
+ */
+package org.apache.catalina.startup;
+
+import java.security.SecureRandom;
+import java.util.Random;
+
+public class FastNonSecureRandom extends SecureRandom {
+
+    private static final long serialVersionUID = 1L;
+
+    private final Random random = new Random();
+
+    @Override
+    public String getAlgorithm() {
+        return "INSECURE";
+    }
+
+    @Override
+    public synchronized void setSeed(byte[] seed) {
+        // Not implemented
+    }
+
+    @Override
+    public synchronized void setSeed(long seed) {
+        // The super class constructor calls this method earlier than our
+        // fields are initialized. Ignore the call.
+        if (random == null) {
+            return;
+        }
+        random.setSeed(seed);
+    }
+
+    @Override
+    public synchronized void nextBytes(byte[] bytes) {
+        random.nextBytes(bytes);
+    }
+
+    @Override
+    public byte[] generateSeed(int numBytes) {
+        byte[] value = new byte[numBytes];
+        nextBytes(value);
+        return value;
+    }
+
+}