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+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. -->
+<!-- This component and the accompanying materials are made available under the terms of the License 
+"Eclipse Public License v1.0" which accompanies this distribution, 
+and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". -->
+<!-- Initial Contributors:
+    Nokia Corporation - initial contribution.
+Contributors: 
+-->
+<!DOCTYPE concept
+  PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
+<concept id="GUID-2861F3D9-875E-5AB3-9600-B328F042CC38" xml:lang="en"><title>MakeKeys
+Overview</title><prolog><metadata><keywords/></metadata></prolog><conbody>
+<p>The <xref href="GUID-557BF1DA-B6E8-521B-89F0-15C84E3BCB1A.dita">MakeKeys</xref> tool
+is a PC-side command-line tool that enables Symbian application developers
+to create a private key-public key pair and generate certificate requests. </p>
+<section><title>Purpose</title><p>The MakeKeys tool can be used to create
+a private key-public key (in form of a self-signed certificate) pair. The
+private key can then be used by the <xref href="GUID-B20EE8A3-D7B2-5872-AF43-001A88C1A46E.dita">SignSIS</xref> tool
+to digitally sign an installation file. The self-signed certificate can be
+used by the MakeKeys tool to create a certificate request file, which can
+then be submitted to a Certification Authority (CA) for signing. </p><note>The
+MakeKeys tool cannot generate Certification Authority (CA) certificates.</note> </section>
+<section><title>Key concepts and terms</title> <dl>
+<dlentry>
+<dt>Key</dt>
+<dd><p>A key is a constant value applied using a cryptographic algorithm to
+encrypt text or to decrypt encrypted text. </p> <p>Keys are classified as
+symmetric and asymmetric based on the type of algorithm applied. If the same
+key is used for both encryption and decryption, it is symmetric. If different
+keys are used for encryption and decryption, they are asymmetric. Asymmetric
+keys exist in the form of a private key-public key pair, where the public
+key is used for encryption and the private key is used for decryption. For
+more information, see <xref href="GUID-FB2CAA46-8EBB-5F76-847C-F3B953C9D31C.dita">Public
+Key Cryptography</xref>. </p> </dd>
+</dlentry>
+</dl> <dl>
+<dlentry>
+<dt>Certification Authority</dt>
+<dd><p>Certification Authority (CAs) is a trusted third party that provides
+root certificates to users (End Entities). For details, see <xref href="GUID-911E9F7E-D0AD-55EC-A3F4-1D427F803780.dita">Certificates</xref>. </p> </dd>
+</dlentry>
+</dl> <dl>
+<dlentry>
+<dt>Digital signature</dt>
+<dd><p>A digital signature is used to verify that a message (or data) actually
+came from the sender (the one who signed the message) and that it has not
+been tampered with. For details, see <xref href="GUID-5C58F7D1-D672-5B6D-AD48-863EC68F7446.dita">Digital
+Signatures</xref>. </p> </dd>
+</dlentry>
+</dl> </section>
+</conbody><related-links>
+<link href="GUID-D45A4AE9-4169-4466-B02B-629B15C3E9AA.dita"><linktext>MakeKeys
+Tutorials</linktext></link>
+<link href="GUID-557BF1DA-B6E8-521B-89F0-15C84E3BCB1A.dita"><linktext>MakeKeys
+Reference</linktext></link>
+</related-links></concept>
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