diff -r 000000000000 -r fb9019fb1bf7 src/org/gege/caldavsyncadapter/caldav/EasyX509TrustManager.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/org/gege/caldavsyncadapter/caldav/EasyX509TrustManager.java	Tue Feb 10 18:12:00 2015 +0100
@@ -0,0 +1,114 @@
+/**
+ * Copyright (c) 2012-2013, Gerald Garcia
+ * 
+ * This file is part of Andoid Caldav Sync Adapter Free.
+ *
+ * Andoid Caldav Sync Adapter Free is free software: you can redistribute 
+ * it and/or modify it under the terms of the GNU General Public License 
+ * as published by the Free Software Foundation, either version 3 of the 
+ * License, or at your option any later version.
+ *
+ * Andoid Caldav Sync Adapter Free is distributed in the hope that 
+ * it will be useful, but WITHOUT ANY WARRANTY; without even the implied 
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Andoid Caldav Sync Adapter Free.  
+ * If not, see <http://www.gnu.org/licenses/>.
+ * 
+ */
+
+package org.gege.caldavsyncadapter.caldav;
+
+/*
+ * 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.
+ */
+
+import java.security.KeyStore;
+import java.security.KeyStoreException;
+import java.security.NoSuchAlgorithmException;
+import java.security.cert.CertificateException;
+import java.security.cert.X509Certificate;
+
+import javax.net.ssl.TrustManager;
+import javax.net.ssl.TrustManagerFactory;
+import javax.net.ssl.X509TrustManager;
+
+/**
+ * @author olamy
+ * @version $Id: EasyX509TrustManager.java 765355 2009-04-15 20:59:07Z evenisse $
+ * @since 1.2.3
+ */
+public class EasyX509TrustManager
+    implements X509TrustManager
+{
+
+    private X509TrustManager standardTrustManager = null;
+
+    /**
+     * Constructor for EasyX509TrustManager.
+     */
+    public EasyX509TrustManager( KeyStore keystore )
+        throws NoSuchAlgorithmException, KeyStoreException
+    {
+        super();
+        TrustManagerFactory factory = TrustManagerFactory.getInstance( TrustManagerFactory.getDefaultAlgorithm() );
+        factory.init( keystore );
+        TrustManager[] trustmanagers = factory.getTrustManagers();
+        if ( trustmanagers.length == 0 )
+        {
+            throw new NoSuchAlgorithmException( "no trust manager found" );
+        }
+        this.standardTrustManager = (X509TrustManager) trustmanagers[0];
+    }
+
+    /**
+     * @see javax.net.ssl.X509TrustManager#checkClientTrusted(X509Certificate[],String authType)
+     */
+    public void checkClientTrusted( X509Certificate[] certificates, String authType )
+        throws CertificateException
+    {
+        standardTrustManager.checkClientTrusted( certificates, authType );
+    }
+
+    /**
+     * @see javax.net.ssl.X509TrustManager#checkServerTrusted(X509Certificate[],String authType)
+     */
+    public void checkServerTrusted( X509Certificate[] certificates, String authType )
+        throws CertificateException
+    {
+        if ( ( certificates != null ) && ( certificates.length == 1 ) )
+        {
+            certificates[0].checkValidity();
+        }
+        else
+        {
+            standardTrustManager.checkServerTrusted( certificates, authType );
+        }
+    }
+
+    /**
+     * @see javax.net.ssl.X509TrustManager#getAcceptedIssuers()
+     */
+    public X509Certificate[] getAcceptedIssuers()
+    {
+        return this.standardTrustManager.getAcceptedIssuers();
+    }
+
+}
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