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SignFile task

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Signs the specified file using the specified certificate.

Parameters

The following table describes the parameters of the SignFile task.

Note that SHA-256 certificates are allowed only on machines that have .NET 4.5 and higher.

Warning

Starting in Visual Studio 2013 Update 3, this task has a new signature that allows you to specify the target framework version for the file. You are encouraged to use the new signature wherever possible, because the MSBuild process uses SHA-256 hashes only when the target framework is .NET 4.5 or higher. If the target framework is .NET 4.0 or below, the SHA-256 hash will not be used.

Parameter Description
CertificateThumbprint Required String parameter.

Specifies the certificate to use for signing. This certificate must be in the current user's personal store.
SigningTarget Required ITaskItem parameter.

Specifies the files to sign with the certificate, of type .exe or .dll.
TimestampUrl Optional String parameter.

Specifies the URL of a time stamping server.
TargetFrameworkVersion The version of the .NET Framework that is used for the target.

Remarks

In addition to the parameters listed above, this task inherits parameters from the Task class. For a list of these additional parameters and their descriptions, see Task base class.

Example

The following example uses the SignFile task to sign the files specified in the FilesToSign item collection with the certificate specified by the CertificateThumbprint property.

<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
    <ItemGroup>
        <FileToSign Include="File.exe" />
    </ItemGroup>
    <PropertyGroup>
        <Certificate>Cert.cer</Certificate>
    </PropertyGroup>
    <Target Name="Sign">
        <SignFile
            CertificateThumbprint="$(CertificateThumbprint)"
            SigningTarget="@(FileToSign)"
            TargetFrameworkVersion="v4.5" />
    </Target>
</Project>

Note

The certificate thumbprint is the SHA-1 hash of the certificate. For more information, see Obtain the SHA-1 hash of a trusted root CA certificate. If you copy and paste the thumbprint from the certificate details, make sure you do not include the extra (3F) invisible character, which may prevent SignFile from finding the certificate.

See also