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<concept id="GUID-03BBEA31-3266-5B1C-9017-4EE7EA4AF1A8" xml:lang="en"><title>Creating
and Signing an Installation File</title><prolog><metadata><keywords/></metadata></prolog><conbody>
<section><title>Introduction</title> <p>A Software Installation (SIS) file
can be generated as an unsigned file, a self-signed or signed file. Self-signed
and unsigned packages are considered to be <i>unknown</i>, and are installed
by the Software Installer, depending on the security policy of the Symbian
device. </p> <p>If the <filepath>SIS</filepath> file is signed, the Software
Installer validates the certificate chains and based on verification, installs
the <filepath>SIS</filepath> file or aborts the installation. </p> </section>
<section><title>Procedure</title> <ol id="GUID-F956C034-BA59-5811-9043-BF0D77F10677">
<li id="GUID-9842671A-A9BE-5CC1-A957-D2AA09B2B6D0"><p>Create a private key-public
key pair and certificate request using the <xref href="GUID-557BF1DA-B6E8-521B-89F0-15C84E3BCB1A.dita">MakeKeys</xref> tool.
For details, see <xref href="GUID-D45A4AE9-4169-4466-B02B-629B15C3E9AA.dita">MaKeKeys
Tutorial</xref>. </p> </li>
<li id="GUID-030DB6CF-22B6-529A-9915-38A4AD2A8A92"><p>Submit the certificate
request to a Certificate Authority (CA) and receive an authenticated digital
certificate. </p> </li>
<li id="GUID-F8CDA8A6-4FD1-5F96-9D50-E2B7323504B5"><p>Create a package (PKG)
file containing all the elements required to create the installation file.
For details see <xref href="GUID-43B4B4E7-413E-5D18-811C-4B9E38CDEB69.dita">PKG
File Format</xref> . </p> </li>
<li id="GUID-80F3E1E2-7E61-53B7-948F-651BA163469E"><p>Run <xref href="GUID-4BDC9F63-83A1-53A5-91A0-B092AA821755.dita">MakeSIS</xref> at
the command prompt to create an unsigned SIS file. Specify the PKG file as
input argument, as shown in the following example: </p> <p><codeblock id="GUID-44397CFA-9650-5C19-8F47-015A3BC90D88" xml:space="preserve">makesis mypackage.pkg</codeblock> </p> <p> <codeph>MakeSIS</codeph> generates an unsigned SIS file. </p> </li>
<li id="GUID-C1190F84-8E02-5C57-90BE-3C3CCB0AAE04"><p>Run <xref href="GUID-B20EE8A3-D7B2-5872-AF43-001A88C1A46E.dita">SignSIS</xref> at
the command prompt to sign the unsigned SIS file. Specify the unsigned SIS
file as input, and public key certificate and private key as arguments, as
shown in the following example: </p> <p><codeblock id="GUID-A674816E-D8AF-5B9F-839B-3D53C337D481" xml:space="preserve">signsis trustedchain.pem eecertkey.key mypackage.sis</codeblock> </p> <p>Based on the certificate provided as input, <codeph>SignSiS</codeph> generates
a signed SIS file. For details, see <xref href="GUID-AFBD4ED6-9588-531C-8EDF-566DB1D03088.dita">Signing</xref>  </p> </li>
</ol><note> As an alternative to step 4 and 5, run the <xref href="GUID-AA555CC1-5CFF-5609-9191-8970F32BA255.dita">CreateSIS</xref> tool
at the command prompt to generate and sign the installation file. Specify
the trusted certificate-key pairs as arguments, as shown in the following
example: <codeblock xml:space="preserve">createsis create -cert trustedchain.pem -key eecertkey.key mypackage.pkg
</codeblock></note><p>The process of creating an installation file can be
understood using the following illustration:</p><fig id="GUID-DB0D2E8C-E8B6-46C8-8CF4-1970EA1B3A03">
<image href="GUID-B46C54AD-268C-58A0-B244-134C4D8BDFE1_d0e27252_href.png" placement="inline"/>
</fig> </section>
<section><title>Notes</title> <p>While creating a SIS file using the <b>CreateSIS</b> tool,
if you do not specify the key or certificate on the command line the <codeph>create</codeph> method
generates a key and a matching self-signed certificate, and uses it to sign
the resulting SIS file. </p> <p>The generated certificate and key is dumped
into the current working directory as <filepath>cert-gen.cer</filepath> and <filepath>key-gen.key</filepath> files.
If <filepath>key-gen.key</filepath> exists, the certificate and key filenames
are indexed incrementally. That is, <filepath>cert-genx.cer</filepath> and <filepath>key-genx.key</filepath>,
where <i>x</i> is the incremental index. </p> <p> <b> Note:</b> The passphrase
encryption is not an option. It must be provided with the <codeph>-pass</codeph> option.
If this option is not specified, <b>CreateSIS</b> prompts for the passphrase
during key generation. </p> </section>
</conbody><related-links>
<link href="GUID-AA555CC1-5CFF-5609-9191-8970F32BA255.dita"><linktext>CreateSIS</linktext>
</link>
<link href="GUID-4BDC9F63-83A1-53A5-91A0-B092AA821755.dita"><linktext>MakeSIS</linktext>
</link>
<link href="GUID-B20EE8A3-D7B2-5872-AF43-001A88C1A46E.dita"><linktext>SignSIS</linktext>
</link>
</related-links></concept>