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ClientID and IssuerID – Handy Notes of Provider Hosted Application on SharePoint 2013
by Sathish Nadarajan 18 Oct 2015
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SharePoint MVP
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We had seen a lot about the Provider Hosted Apps long back on the LINK, but even then, there are much handier ways were being identified on our day to day requirement progress.

Now, let us see try to understand what is IssuerID and ClientID.

IssuerID:

This ID is the one which should be included on our Web.Config of the PHA.

The sample Web.Config Entry is as follows.

 <add key="ClientId" value="5067de31-fab5-4240-8a69-65fd674927eb" />
     <add key="ClientSecret" value="U0pDFuzRTq6S5V/NmQ9UTymf/Q+NiztEpQuJZt1C7EI=" />
     <add key="ClientSigningCertificatePath" value="D:\MyCert.pfx" />
     <add key="ClientSigningCertificatePassword" value="SamplePassword" />
     <add key="IssuerId" value="11111111-1111-1111-1111-111111111111" />
 

To register this ID, we need a PowerShell Script to be executed.

 cls
 Add-PSSnapin "Microsoft.SharePoint.PowerShell"
 $issuerID = "11111111-1111-1111-1111-111111111111"
 $targetSiteUrl = "http://MySiteCollection/"
 $targetSite = Get-SPSite $targetSiteUrl
 $realm = Get-SPAuthenticationRealm -ServiceContext $targetSite
 $registeredIssuerName = $issuerID + '@' + $realm
 $publicCertificatePath = "D:\ MyCert.cer"
 $publicCertificate = Get-PfxCertificate $publicCertificatePath
  Write-Host "Create Security token issuer"
 
 $secureTokenIssuer = New-SPTrustedSecurityTokenIssuer -Name $issuerID -RegisteredIssuerName $registeredIssuerName -Certificate $publicCertificate -IsTrustBroker
 $secureTokenIssuer | select *
 $secureTokenIssuer  | select * | Out-File -FilePath "SecureTokenIssuer.txt"
 #Turn off the HTTPS requirement for OAuth during development
 $serviceConfig = Get-SPSecurityTokenServiceConfig
 $serviceConfig.AllowOAuthOverHttp = $true
 $serviceConfig.Update()
 Write-Host "All done..."
 

For a SPFarm, there can be only one certificate and an Issuer ID, which we can use for many Provider Hosted Applications.

ClientID:

The client ID is the one which is unique for every Provider Hosted Applications. And the PowerShell Script to register this ClientID is

 # Registering App principal
 cls
 Add-PSSnapin "Microsoft.SharePoint.PowerShell"
 # set intialization values for new app principal
 
  $appDisplayName = "MyApp"
 $clientID = "a0f73ea5-3e12-4d3a-bce2-fb1988be6676"
 
 $targetSiteUrl = "http://SiteCollectionURL/"
 $targetSite = Get-SPSite $targetSiteUrl
 $realm = Get-SPAuthenticationRealm -ServiceContext $targetSite
 $fullAppPrincipalIdentifier = $clientID + '@' + $realm
 Write-Host "Registering new app principal"
 $registeredAppPrincipal = Register-SPAppPrincipal -NameIdentifier $fullAppPrincipalIdentifier -Site $targetSite.RootWeb -DisplayName $AppDisplayName
 $registeredAppPrincipal | select * | Format-List
 $registeredAppPrincipal | select * | Format-List | Out-File -FilePath "Output.txt"
 Write-Host "Registration Completed"
 

The same can be done by the Site as well.

1. Go to the http://sitecollection/_layouts/15/appregnew.aspx

2. Enter the Values and click on the Generate.

clip_image002

Even to have the ClientID and IssuerID, we need to come to this screen and click on the Generate Button to generate the GUIDs. We should not use any other tools to generate the GUID.

Happy Coding,

Sathish Nadarajan.

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