diff --git a/team/bundles/org.eclipse.jsch.ui/src/org/eclipse/jsch/internal/ui/Messages.java b/team/bundles/org.eclipse.jsch.ui/src/org/eclipse/jsch/internal/ui/Messages.java
index 0453c56f0a5..fde33f86be1 100644
--- a/team/bundles/org.eclipse.jsch.ui/src/org/eclipse/jsch/internal/ui/Messages.java
+++ b/team/bundles/org.eclipse.jsch.ui/src/org/eclipse/jsch/internal/ui/Messages.java
@@ -99,6 +99,7 @@ public class Messages extends NLS{
 	public static String CVSSSH2PreferencePage_145;
 	public static String CVSSSH2PreferencePage_146;
 	public static String CVSSSH2PreferencePage_147;
+	public static String CVSSSH2PreferencePage_148;
 	public static String KeyboardInteractiveDialog_0;
 	public static String KeyboardInteractiveDialog_1;
 	public static String KeyboardInteractiveDialog_2;
diff --git a/team/bundles/org.eclipse.jsch.ui/src/org/eclipse/jsch/internal/ui/messages.properties b/team/bundles/org.eclipse.jsch.ui/src/org/eclipse/jsch/internal/ui/messages.properties
index aa6a976f406..345694464a8 100644
--- a/team/bundles/org.eclipse.jsch.ui/src/org/eclipse/jsch/internal/ui/messages.properties
+++ b/team/bundles/org.eclipse.jsch.ui/src/org/eclipse/jsch/internal/ui/messages.properties
@@ -89,6 +89,7 @@ CVSSSH2PreferencePage_144=Key Exchange &Methods
 CVSSSH2PreferencePage_145=MA&C Methods
 CVSSSH2PreferencePage_146=&SSH Agent
 CVSSSH2PreferencePage_147=Select preferred SSH Agent
+CVSSSH2PreferencePage_148=Key Size to Generate:
 UserInfoPrompter_0=SSH2 Message
 UserInfoPrompter_1=SSH2 Message
 KeyboardInteractiveDialog_0=Keyboard Interactive authentication for {0}: {1}
diff --git a/team/bundles/org.eclipse.jsch.ui/src/org/eclipse/jsch/internal/ui/preference/PreferencePage.java b/team/bundles/org.eclipse.jsch.ui/src/org/eclipse/jsch/internal/ui/preference/PreferencePage.java
index f536bec2f4a..623fad21874 100644
--- a/team/bundles/org.eclipse.jsch.ui/src/org/eclipse/jsch/internal/ui/preference/PreferencePage.java
+++ b/team/bundles/org.eclipse.jsch.ui/src/org/eclipse/jsch/internal/ui/preference/PreferencePage.java
@@ -53,6 +53,8 @@
 import org.eclipse.swt.custom.TableEditor;
 import org.eclipse.swt.events.FocusEvent;
 import org.eclipse.swt.events.FocusListener;
+import org.eclipse.swt.events.KeyAdapter;
+import org.eclipse.swt.events.KeyEvent;
 import org.eclipse.swt.events.SelectionAdapter;
 import org.eclipse.swt.events.SelectionEvent;
 import org.eclipse.swt.graphics.Image;
@@ -66,6 +68,7 @@
 import org.eclipse.swt.widgets.FileDialog;
 import org.eclipse.swt.widgets.Label;
 import org.eclipse.swt.widgets.Shell;
+import org.eclipse.swt.widgets.Spinner;
 import org.eclipse.swt.widgets.Table;
 import org.eclipse.swt.widgets.TableColumn;
 import org.eclipse.swt.widgets.TableItem;
@@ -91,6 +94,10 @@ public class PreferencePage extends org.eclipse.jface.preference.PreferencePage
 	private static final String SSH2_PREFERENCE_PAGE_CONTEXT="org.eclipse.jsch.ui.ssh2_preference_page_context"; //$NON-NLS-1$
 	private static final int RSA_KEY_SIZE = 4096;
 	private static final int DSA_KEY_SIZE = 3072;
+	private static final int MIN_KEY_SIZE = 2048;
+	private static final int MAX_KEY_SIZE = RSA_KEY_SIZE;
+	private static final int MAX_KEY_SIZE_DIGIT_COUNT = 0;
+	private static final int KEY_SIZE_INCREMENT = 1024;
 
 	private Label ssh2HomeLabel;
 	private Label privateKeyLabel;
@@ -101,6 +108,7 @@ public class PreferencePage extends org.eclipse.jface.preference.PreferencePage
 	private Button ssh2HomeBrowse;
 	Button keyGenerateDSA;
 	Button keyGenerateRSA;
+	private Spinner keyGenerateSize;
 	private Button keyLoad;
 	private Button keyExport;
 	Button saveKeyPair;
@@ -305,6 +313,19 @@ private Control createKeyManagementPage(Composite parent){
 		gd.horizontalSpan=1;
 		keyLoad.setLayoutData(gd);
 
+		final Label keyGenerateSizeLabel=new Label(group, SWT.NONE);
+		keyGenerateSizeLabel.setText(Messages.CVSSSH2PreferencePage_148);
+		keyGenerateSize=new Spinner(group, SWT.BORDER);
+		keyGenerateSize.setValues(MIN_KEY_SIZE, MIN_KEY_SIZE, MAX_KEY_SIZE, MAX_KEY_SIZE_DIGIT_COUNT,
+				KEY_SIZE_INCREMENT, KEY_SIZE_INCREMENT);
+
+		keyGenerateSize.addKeyListener(new KeyAdapter() {
+			@Override
+			public void keyPressed(KeyEvent e) {
+				e.doit = false;
+			}
+		});
+
 		publicKeylabel=new Label(group, SWT.NONE);
 		publicKeylabel.setText(Messages.CVSSSH2PreferencePage_39);
 		gd=new GridData();
@@ -485,6 +506,8 @@ public void widgetSelected(SelectionEvent e){
 					if(e.widget==keyGenerateDSA){
 						type=KeyPair.DSA;
 						_type=IConstants.DSA;
+						if (keyGenerateSize.getSelection()>DSA_KEY_SIZE)
+							keyGenerateSize.setSelection(DSA_KEY_SIZE);
 					}
 					else if(e.widget==keyGenerateRSA){
 						type=KeyPair.RSA;
@@ -496,7 +519,7 @@ else if(e.widget==keyGenerateRSA){
 
 					final KeyPair[] _kpair=new KeyPair[1];
 					final int __type=type;
-					int keySize = type == KeyPair.RSA ? RSA_KEY_SIZE : DSA_KEY_SIZE;
+					int keySize=keyGenerateSize.getSelection();
 					final JSchException[] _e=new JSchException[1];
 					BusyIndicator.showWhile(getShell().getDisplay(), () -> {
 						try {