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<concept id="GUID-B9414AE8-820E-4CA5-A9C4-29560CD6F2EF" xml:lang="en"><title>Application signing</title><prolog><metadata><keywords/></metadata></prolog><conbody>
<p>All Symbian applications must be signed before they can be installed.
All applications which use <xref href="GUID-6971B0A2-F79B-4E05-8AF3-BB1FC1932A22.dita">capability</xref>-protected APIs, where the capability cannot be granted by the end
user, have to be certified. Such certification can be obtained through <xref href="https://www.symbiansigned.com/" scope="external">Symbian Signed</xref>.</p>
<p>Signing is a means of encoding a digital certificate into the
application installation file. The certificate identifies the application’s
vendor, and grants access to capabilities defined during the build
process.</p>
<p>The signing process is described in detail on the <xref href="https://www.symbiansigned.com/" scope="external">Symbian Signed</xref> website.</p>
<section id="GUID-B9414AE8-820E-4CA5-A9C4-29560CD6F2EH"><title>Signing
options</title>
<p>If your application only needs <i>user capabilities</i> (<codeph>LocalServices</codeph>, <codeph>NetworkServices</codeph>, <codeph>ReadUserData</codeph>, <codeph>WriteUserData</codeph>, <codeph>UserEnvironment</codeph>, and<codeph>Location</codeph>), you can self-sign the application.</p>
<note>
<p>When the end users are installing a self-signed application,
they are informed that the application is untrusted and may decide
to abort the installation. In Nokia E-series devices the user must
change a setting to allow self-signed applications to install.</p>
</note>

<p>Sign the <codeph>sis</codeph> installation file with any private key. You can use the <xref href="GUID-557BF1DA-B6E8-521B-89F0-15C84E3BCB1A.dita">MakeKeys</xref> application
to create the needed private key and, for example, <xref href="GUID-B20EE8A3-D7B2-5872-AF43-001A88C1A46E.dita">SignSIS</xref> to
sign the application. Both applications are delivered with the SDK.
For more information, see <xref href="http://wiki.forum.nokia.com/index.php/How_to_sign_a_.Sis_file_with_Self-Sign_Certificate" scope="external">How to sign a .Sis file with Self-Sign Certificate</xref> in the
Forum Nokia Developer Community Wiki.</p>
<p>The other signing options (Open Signed, Express Signed and Certified
Signed) are described in detail in <xref href="http://developer.symbian.org/wiki/index.php/Complete_Guide_To_Symbian_Signed" scope="external">The Complete Guide to Symbian Signed</xref>.</p>
</section>
<section id="GUID-44AC868B-484A-4B84-8A3A-0351E70F1141"><title>Additional
information on signing</title>

<p>The UID value you need to
use for your application depends on whether your application is signed
or self-signed. </p>
</section>
</conbody></concept>