diff --git a/common/src/main/java/io/bitsquare/common/crypto/Encryption.java b/common/src/main/java/io/bitsquare/common/crypto/Encryption.java
index 5099a6938d..bb9a0adaf2 100644
--- a/common/src/main/java/io/bitsquare/common/crypto/Encryption.java
+++ b/common/src/main/java/io/bitsquare/common/crypto/Encryption.java
@@ -37,7 +37,7 @@ public class Encryption {
     private static final Logger log = LoggerFactory.getLogger(Encryption.class);
 
     public static final String ASYM_KEY_ALGO = "RSA";
-    private static final String ASYM_CIPHER = "RSA/ECB/PKCS1Padding";
+    private static final String ASYM_CIPHER = "RSA/None/OAEPWithSHA256AndMGF1Padding";
 
     private static final String SYM_KEY_ALGO = "AES";
     private static final String SYM_CIPHER = "AES";
diff --git a/common/src/main/resources/logback.xml b/common/src/main/resources/logback.xml
new file mode 100644
index 0000000000..de468733bc
--- /dev/null
+++ b/common/src/main/resources/logback.xml
@@ -0,0 +1,47 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="CONSOLE_APPENDER" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%highlight(%d{MMM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{15}: %msg %xEx%n)</pattern>
+        </encoder>
+    </appender>
+
+    <root level="TRACE">
+        <appender-ref ref="CONSOLE_APPENDER"/>
+    </root>
+
+    <logger name="io.bitsquare.storage.Storage" level="WARN"/>
+    <logger name="io.bitsquare.storage.FileManager" level="WARN"/>
+    <logger name="io.bitsquare.locale.BSResources" level="ERROR"/>
+
+    <!-- <logger name="io.bitsquare.p2p.peers.PeerGroup" level="TRACE"/>
+    
+    
+
+     <logger name="io.bitsquare.p2p.P2PService" level="TRACE"/>
+     <logger name="io.bitsquare.p2p.storage.ProtectedExpirableDataStorage" level="TRACE"/>
+     <logger name="io.bitsquare.p2p.network.LocalhostNetworkNode" level="TRACE"/>
+     <logger name="io.bitsquare.p2p.network.TorNetworkNode" level="TRACE"/>
+     <logger name="io.bitsquare.p2p.network.NetworkNode" level="TRACE"/>-->
+
+
+    <!-- <logger name="com.msopentech.thali.toronionproxy.OnionProxyManagerEventHandler" level="WARN"/>
+ 
+     <logger name="io.bitsquare.btc.AddressBasedCoinSelector" level="WARN"/>
+     <logger name="io.bitsquare.storage.Storage" level="WARN"/>
+ 
+     <logger name="io.bitsquare.gui.util.Profiler" level="ERROR"/>
+     <logger name="io.bitsquare.temp.storage.RemoteStorage" level="WARN"/>
+     <logger name="io.bitsquare.storage.FileManager" level="WARN"/>
+ 
+     <logger name="org.bitcoinj" level="WARN"/>
+ 
+     <logger name="org.bitcoinj.core.BitcoinSerializer" level="WARN"/>
+     <logger name="org.bitcoinj.core.Peer" level="WARN"/>
+     <logger name="org.bitcoinj.core.HeadersMessage" level="WARN"/>
+     <logger name="org.bitcoinj.core.AbstractBlockChain" level="ERROR"/>-->
+
+    <logger name="com.msopentech.thali.toronionproxy.OnionProxyManagerEventHandler" level="INFO"/>
+    <logger name="org.bitcoinj" level="WARN"/>
+
+</configuration>
diff --git a/common/src/test/java/io/bitsquare/common/crypto/EncryptionTest.java b/common/src/test/java/io/bitsquare/common/crypto/EncryptionTest.java
new file mode 100644
index 0000000000..7be39a9f24
--- /dev/null
+++ b/common/src/test/java/io/bitsquare/common/crypto/EncryptionTest.java
@@ -0,0 +1,80 @@
+package io.bitsquare.common.crypto;
+
+import io.bitsquare.common.util.Utilities;
+import org.bouncycastle.jce.provider.BouncyCastleProvider;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.File;
+import java.io.IOException;
+import java.io.Serializable;
+import java.security.KeyStoreException;
+import java.security.NoSuchAlgorithmException;
+import java.security.Security;
+import java.security.cert.CertificateException;
+import java.util.Random;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+
+public class EncryptionTest {
+    private static final Logger log = LoggerFactory.getLogger(EncryptionTest.class);
+    private KeyRing keyRing;
+    private File dir;
+
+    @Before
+    public void setup() throws CertificateException, NoSuchAlgorithmException, KeyStoreException, IOException, CryptoException {
+        Security.addProvider(new BouncyCastleProvider());
+        dir = File.createTempFile("temp_tests", "");
+        dir.delete();
+        dir.mkdir();
+        KeyStorage keyStorage = new KeyStorage(dir);
+        keyRing = new KeyRing(keyStorage);
+    }
+
+    @After
+    public void tearDown() throws IOException {
+        Utilities.deleteDirectory(dir);
+    }
+
+
+    @Test
+    public void testDecryptHybridWithSignature() {
+        long ts = System.currentTimeMillis();
+        log.trace("start ");
+        for (int i = 0; i < 100; i++) {
+            MockMessage payload = new MockMessage(new Random().nextInt());
+            SealedAndSigned sealedAndSigned = null;
+            try {
+                sealedAndSigned = Encryption.encryptHybridWithSignature(payload,
+                        keyRing.getSignatureKeyPair(), keyRing.getPubKeyRing().getEncryptionPubKey());
+            } catch (CryptoException e) {
+                log.error("encryptHybridWithSignature failed");
+                e.printStackTrace();
+                assertTrue(false);
+            }
+            try {
+                DecryptedDataTuple tuple = Encryption.decryptHybridWithSignature(sealedAndSigned, keyRing.getEncryptionKeyPair().getPrivate());
+                assertEquals(((MockMessage) tuple.payload).nonce, payload.nonce);
+            } catch (CryptoException e) {
+                log.error("decryptHybridWithSignature failed");
+                e.printStackTrace();
+                assertTrue(false);
+            }
+        }
+        log.trace("took " + (System.currentTimeMillis() - ts) + " ms.");
+    }
+
+    private static class MockMessage implements Serializable {
+        public int nonce;
+
+        public MockMessage(int nonce) {
+            this.nonce = nonce;
+        }
+    }
+}
+
+
diff --git a/common/src/test/java/io/bitsquare/common/crypto/SigTest.java b/common/src/test/java/io/bitsquare/common/crypto/SigTest.java
new file mode 100644
index 0000000000..0cda4fc037
--- /dev/null
+++ b/common/src/test/java/io/bitsquare/common/crypto/SigTest.java
@@ -0,0 +1,68 @@
+package io.bitsquare.common.crypto;
+
+import io.bitsquare.common.util.Utilities;
+import org.bouncycastle.jce.provider.BouncyCastleProvider;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.File;
+import java.io.IOException;
+import java.security.KeyStoreException;
+import java.security.NoSuchAlgorithmException;
+import java.security.Security;
+import java.security.cert.CertificateException;
+import java.util.Random;
+
+import static org.junit.Assert.assertTrue;
+
+public class SigTest {
+    private static final Logger log = LoggerFactory.getLogger(SigTest.class);
+    private KeyRing keyRing;
+    private File dir;
+
+    @Before
+    public void setup() throws CertificateException, NoSuchAlgorithmException, KeyStoreException, IOException, CryptoException {
+        Security.addProvider(new BouncyCastleProvider());
+        dir = File.createTempFile("temp_tests", "");
+        dir.delete();
+        dir.mkdir();
+        KeyStorage keyStorage = new KeyStorage(dir);
+        keyRing = new KeyRing(keyStorage);
+    }
+
+    @After
+    public void tearDown() throws IOException {
+        Utilities.deleteDirectory(dir);
+    }
+
+
+    @Test
+    public void testSignature() {
+        long ts = System.currentTimeMillis();
+        log.trace("start ");
+        for (int i = 0; i < 100; i++) {
+            String msg = String.valueOf(new Random().nextInt());
+            String sig = null;
+            try {
+                sig = Sig.sign(keyRing.getSignatureKeyPair().getPrivate(), msg);
+            } catch (CryptoException e) {
+                log.error("sign failed");
+                e.printStackTrace();
+                assertTrue(false);
+            }
+            try {
+                assertTrue(Sig.verify(keyRing.getSignatureKeyPair().getPublic(), msg, sig));
+            } catch (CryptoException e) {
+                log.error("verify failed");
+                e.printStackTrace();
+                assertTrue(false);
+            }
+        }
+        log.trace("took " + (System.currentTimeMillis() - ts) + " ms.");
+    }
+}
+
+
diff --git a/gui/src/main/java/io/bitsquare/gui/main/MainViewModel.java b/gui/src/main/java/io/bitsquare/gui/main/MainViewModel.java
index b7787d697a..0b43672d85 100644
--- a/gui/src/main/java/io/bitsquare/gui/main/MainViewModel.java
+++ b/gui/src/main/java/io/bitsquare/gui/main/MainViewModel.java
@@ -491,7 +491,6 @@ public class MainViewModel implements ViewModel {
                             .onClose(() -> Utilities.openWebPage("https://github.com/bitsquare/bitsquare/issues"))
                             .show());
                 }
-
             }
         };
         checkCryptoThread.start();