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    10 <!DOCTYPE concept

    11   PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">

    12 <concept id="GUID-2861F3D9-875E-5AB3-9600-B328F042CC38" xml:lang="en"><title>MakeKeys

    13 Overview</title><prolog><metadata><keywords/></metadata></prolog><conbody>

    14 <p>The <xref href="GUID-557BF1DA-B6E8-521B-89F0-15C84E3BCB1A.dita">MakeKeys</xref> tool

    15 is a PC-side command-line tool that enables Symbian application developers

    16 to create a private key-public key pair and generate certificate requests. </p>

    17 <section><title>Purpose</title><p>The MakeKeys tool can be used to create

    18 a private key-public key (in form of a self-signed certificate) pair. The

    19 private key can then be used by the <xref href="GUID-B20EE8A3-D7B2-5872-AF43-001A88C1A46E.dita">SignSIS</xref> tool

    20 to digitally sign an installation file. The self-signed certificate can be

    21 used by the MakeKeys tool to create a certificate request file, which can

    22 then be submitted to a Certification Authority (CA) for signing. </p><note>The

    23 MakeKeys tool cannot generate Certification Authority (CA) certificates.</note> </section>

    24 <section><title>Key concepts and terms</title> <dl>

    25 <dlentry>

    26 <dt>Key</dt>

    27 <dd><p>A key is a constant value applied using a cryptographic algorithm to

    28 encrypt text or to decrypt encrypted text. </p> <p>Keys are classified as

    29 symmetric and asymmetric based on the type of algorithm applied. If the same

    30 key is used for both encryption and decryption, it is symmetric. If different

    31 keys are used for encryption and decryption, they are asymmetric. Asymmetric

    32 keys exist in the form of a private key-public key pair, where the public

    33 key is used for encryption and the private key is used for decryption. For

    34 more information, see <xref href="GUID-FB2CAA46-8EBB-5F76-847C-F3B953C9D31C.dita">Public

    35 Key Cryptography</xref>. </p> </dd>

    36 </dlentry>

    37 </dl> <dl>

    38 <dlentry>

    39 <dt>Certification Authority</dt>

    40 <dd><p>Certification Authority (CAs) is a trusted third party that provides

    41 root certificates to users (End Entities). For details, see <xref href="GUID-911E9F7E-D0AD-55EC-A3F4-1D427F803780.dita">Certificates</xref>. </p> </dd>

    42 </dlentry>

    43 </dl> <dl>

    44 <dlentry>

    45 <dt>Digital signature</dt>

    46 <dd><p>A digital signature is used to verify that a message (or data) actually

    47 came from the sender (the one who signed the message) and that it has not

    48 been tampered with. For details, see <xref href="GUID-5C58F7D1-D672-5B6D-AD48-863EC68F7446.dita">Digital

    49 Signatures</xref>. </p> </dd>

    50 </dlentry>

    51 </dl> </section>

    52 </conbody><related-links>

    53 <link href="GUID-D45A4AE9-4169-4466-B02B-629B15C3E9AA.dita"><linktext>MakeKeys

    54 Tutorials</linktext></link>

    55 <link href="GUID-557BF1DA-B6E8-521B-89F0-15C84E3BCB1A.dita"><linktext>MakeKeys

    56 Reference</linktext></link>

    57 </related-links></concept>