Set the default RSA key size to 2048 bits

This should be the default size according to NIST 800-57 for new keys.
Closes vx#81.

Author: kruton

CHANGELOG.md

@@ -10,6 +10,9 @@ This project adheres to [Semantic Versioning](http://semver.org/).
   app you want to use.
 - The text in the entropy gathering dialog is now scaled correctly.
 
+### Changed
+- Default RSA key size is now 2048 bits.
+
 ## [1.8.4][1.8.4] - 2015-04-19
 ### Fixed
 - Key exchange and host key algorithm preference order was not being

src/org/connectbot/GeneratePubkeyActivity.java

@@ -54,14 +54,11 @@
 import com.trilead.ssh2.signature.ECDSASHA2Verify;
 
 public class GeneratePubkeyActivity extends Activity implements OnEntropyGatheredListener {
-	/**
-     *
-     */
-    private static final int RSA_MINIMUM_BITS = 768;
+	private static final int RSA_MINIMUM_BITS = 768;
 
-    public final static String TAG = "ConnectBot.GeneratePubkeyActivity";
+	public final static String TAG = "ConnectBot.GeneratePubkeyActivity";
 
-	final static int DEFAULT_BITS = 1024;
+	final static int DEFAULT_BITS = 2048;
 
 	final static int[] ECDSA_SIZES = ECDSASHA2Verify.getCurveSizes();