Doc change: Suggest min keysize of 2048 for keys.

Change-Id: I6dcfe9aa12338e4ad71db2e6812ce387a75c09f0

Author: ddougherty

docs/html/guide/publishing/app-signing.jd

@@ -337,17 +337,6 @@ keys)</td>
 <td><code>-v</code></td><td>Enable verbose output.</td>
 </tr>
 <tr>
-<td><code>-keystore&nbsp;&lt;keystore-name&gt;.keystore</code></td><td>A name
-for the keystore containing the private key.</td>
-</tr>
-<tr>
-<td><code>-storepass &lt;password&gt;</code></td><td><p>A password for the
-keystore.</p><p>As a security precaution, do not include this option 
-in your command line unless you are working at a secure computer.
-If not supplied, Keytool prompts you to enter the password. In this 
-way, your password is not stored in your shell history.</p></td>
-</tr>
-<tr>
 <td><code>-alias &lt;alias_name&gt;</code></td><td>An alias for the key. Only
 the first 8 characters of the alias are used.</td>
 </tr>
@@ -356,29 +345,43 @@ the first 8 characters of the alias are used.</td>
 when generating the key. Both DSA and RSA are supported.</td>
 </tr>
 <tr>
+<td><code>-keysize &lt;size&gt;</code></td><td>The size of each generated key
+(bits). If not supplied, Keytool uses a default key size of 1024 bits. In
+general, we recommend using a key size of 2048 bits or higher. </td>
+</tr>
+<tr>
 <td><code>-dname &lt;name&gt;</code></td><td><p>A Distinguished Name that describes
 who created the key. The value is used as the issuer and subject fields in the
 self-signed certificate. </p><p>Note that you do not need to specify this option
 in the command line. If not supplied, Jarsigner prompts you to enter each 
 of the Distinguished Name fields (CN, OU, and so on).</p></td>
 </tr>
 <tr>
+<td><code>-keypass &lt;password&gt;</code></td><td><p>The password for the
+key.</p> <p>As a security precaution, do not include this option in your command
+line. If not supplied, Keytool prompts you to enter the password. In this way,
+your password is not stored in your shell history.</p></td>
+</tr>
+<tr>
 <td><code>-validity &lt;valdays&gt;</code></td><td><p>The validity period for the
 key, in days. </p><p><strong>Note:</strong> A value of 10000 or greater is recommended.</p></td>
 </tr>
 <tr>
-<td><code>-keypass &lt;password&gt;</code></td><td><p>The password for the key.</p>
-<p>As a security precaution, do not include this option 
-in your command line unless you are working at a secure computer.
-If not supplied, Keytool prompts you to enter the password. In this 
-way, your password is not stored in your shell history.</p></td>
+<td><code>-keystore&nbsp;&lt;keystore-name&gt;.keystore</code></td><td>A name
+for the keystore containing the private key.</td>
+</tr>
+<tr>
+<td><code>-storepass &lt;password&gt;</code></td><td><p>A password for the
+keystore.</p><p>As a security precaution, do not include this option in your
+command line. If not supplied, Keytool prompts you to enter the password. In
+this way, your password is not stored in your shell history.</p></td>
 </tr>
 </table>
 
 <p>Here's an example of a Keytool command that generates a private key:</p>
 
 <pre>$ keytool -genkey -v -keystore my-release-key.keystore 
--alias alias_name -keyalg RSA -validity 10000</pre>
+-alias alias_name -keyalg RSA -keysize 2048 -validity 10000</pre>
 
 <p>Running the example command above, Keytool prompts you to provide
 passwords for the keystore and key, and to provide the Distinguished