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Social accounts claims transformations

  • Artikkel

In Azure Active Directory B2C (Azure AD B2C), social account identities are stored in a alternativeSecurityIds attribute of a alternativeSecurityIdCollection claim type. Each item in the alternativeSecurityIdCollection specifies the issuer (identity provider name, such as facebook.com) and the issuerUserId, which is a unique user identifier for the issuer.

"alternativeSecurityIds": [{
    "issuer": "google.com",
    "issuerUserId": "MTA4MTQ2MDgyOTI3MDUyNTYzMjcw"
  },
  {
    "issuer": "facebook.com",
    "issuerUserId": "MTIzNDU="
  }]

This article provides examples for using the social account claims transformations of the Identity Experience Framework schema in Azure AD B2C. For more information, see ClaimsTransformations.

AddItemToAlternativeSecurityIdCollection

Adds an AlternativeSecurityId to an alternativeSecurityIdCollection claim. Check out the Live demo of this claims transformation.

Element TransformationClaimType Data Type Notes
InputClaim Element string The claim to be added to the output claim.
InputClaim collection alternativeSecurityIdCollection The claim that is used by the claims transformation if available in the policy. If provided, the claims transformation adds the item at the end of the collection.
OutputClaim collection alternativeSecurityIdCollection The claim that is produced after this claims transformation has been invoked. The new collection that contains both the items from input collection and item.

Example of AddItemToAlternativeSecurityIdCollection

The following example links a new social identity with an existing account. To link a new social identity:

  1. In the AAD-UserReadUsingAlternativeSecurityId and AAD-UserReadUsingObjectId technical profiles, output the user's alternativeSecurityIds claim.
  2. Ask the user to sign in with one of the identity providers that aren't associated with this user.
  3. Using the CreateAlternativeSecurityId claims transformation, create a new alternativeSecurityId claim type with a name of AlternativeSecurityId2
  4. Call the AddItemToAlternativeSecurityIdCollection claims transformation to add the AlternativeSecurityId2 claim to the existing AlternativeSecurityIds claim.
  5. Persist the alternativeSecurityIds claim to the user account
<ClaimsTransformation Id="AddAnotherAlternativeSecurityId" TransformationMethod="AddItemToAlternativeSecurityIdCollection">
  <InputClaims>
    <InputClaim ClaimTypeReferenceId="AlternativeSecurityId2" TransformationClaimType="item" />
    <InputClaim ClaimTypeReferenceId="AlternativeSecurityIds" TransformationClaimType="collection" />
  </InputClaims>
  <OutputClaims>
    <OutputClaim ClaimTypeReferenceId="AlternativeSecurityIds" TransformationClaimType="collection" />
  </OutputClaims>
</ClaimsTransformation>

  • Input claims:

    • item:

      {
    "issuer": "facebook.com",
    "issuerUserId": "MTIzNDU="
}

    • collection:

      [
    {
        "issuer": "live.com",
        "issuerUserId": "MTA4MTQ2MDgyOTI3MDUyNTYzMjcw"
    }
]

  • Output claims:

    • collection:

      [
    {
        "issuer": "live.com",
        "issuerUserId": "MTA4MTQ2MDgyOTI3MDUyNTYzMjcw"
    },
    {
        "issuer": "facebook.com",
        "issuerUserId": "MTIzNDU="
    }
]

CreateAlternativeSecurityId

Creates a JSON representation of the user’s alternativeSecurityId property that can be used in the calls to Microsoft Entra ID. Check out the Live demo of this claims transformation. For more information, see the AlternativeSecurityId schema.

Element TransformationClaimType Data Type Notes
InputClaim key string The claim that specifies the unique user identifier used by the social identity provider.
InputClaim identityProvider string The claim that specifies the social account identity provider name, such as facebook.com.
OutputClaim alternativeSecurityId string The claim that is produced after the claims transformation has been invoked. Contains information about the identity of a social account user. The issuer is the value of the identityProvider claim. The issuerUserId is the value of the key claim in base64 format.

Example of CreateAlternativeSecurityId

Use this claims transformation to generate a alternativeSecurityId claim. It's used by all social identity provider technical profiles, such as Facebook-OAUTH. The following claims transformation receives the user social account ID and the identity provider name. The output of this technical profile is a JSON string format that can be used in Microsoft Entra directory services.

<ClaimsTransformation Id="CreateAlternativeSecurityId" TransformationMethod="CreateAlternativeSecurityId">
  <InputClaims>
    <InputClaim ClaimTypeReferenceId="issuerUserId" TransformationClaimType="key" />
    <InputClaim ClaimTypeReferenceId="identityProvider" TransformationClaimType="identityProvider" />
  </InputClaims>
  <OutputClaims>
    <OutputClaim ClaimTypeReferenceId="alternativeSecurityId" TransformationClaimType="alternativeSecurityId" />
  </OutputClaims>
</ClaimsTransformation>
  • Input claims:
    • key: 12334
    • identityProvider: Facebook.com
  • Output claims:
    • alternativeSecurityId: { "issuer": "facebook.com", "issuerUserId": "MTA4MTQ2MDgyOTI3MDUyNTYzMjcw"}

GetIdentityProvidersFromAlternativeSecurityIdCollectionTransformation

Returns list of issuers from the alternativeSecurityIdCollection claim into a new stringCollection claim. Check out the Live demo of this claims transformation.

Element TransformationClaimType Data Type Notes
InputClaim alternativeSecurityIdCollection alternativeSecurityIdCollection The claim to be used to get the list of identity providers (issuer).
OutputClaim identityProvidersCollection stringCollection The claim that is produced after this claims transformation has been invoked. A list of identity providers associated with the input claim.

Example of GetIdentityProvidersFromAlternativeSecurityIdCollectionTransformation

The following claims transformation reads the user alternativeSecurityIds claim and extracts the list of identity provider names associated with that account. Use output identityProvidersCollection to show the user the list of identity providers associated with the account. Or, on the identity provider selection page, filter the list of identity providers based on output identityProvidersCollection claim. So, user can select to link new social identity that isn't already associated with the account.

<ClaimsTransformation Id="ExtractIdentityProviders" TransformationMethod="GetIdentityProvidersFromAlternativeSecurityIdCollectionTransformation">
  <InputClaims>
    <InputClaim ClaimTypeReferenceId="alternativeSecurityIds" TransformationClaimType="alternativeSecurityIdCollection" />
  </InputClaims>
  <OutputClaims>
    <OutputClaim ClaimTypeReferenceId="identityProviders" TransformationClaimType="identityProvidersCollection" />
  </OutputClaims>
</ClaimsTransformation>

  • Input claims:

    • alternativeSecurityIdCollection:

      [
    {
        "issuer": "google.com",
        "issuerUserId": "MTA4MTQ2MDgyOTI3MDUyNTYzMjcw"
    },
    {
        "issuer": "facebook.com",
        "issuerUserId": "MTIzNDU="
    }
]

  • Output claims:

    • identityProvidersCollection: [ "facebook.com", "google.com" ]

RemoveAlternativeSecurityIdByIdentityProvider

Removes an AlternativeSecurityId from an alternativeSecurityIdCollection claim. Check out the Live demo of this claims transformation.

Element TransformationClaimType Data Type Notes
InputClaim identityProvider string The claim that contains the identity provider name to be removed from the collection.
InputClaim collection alternativeSecurityIdCollection The claim that is used by the claims transformation. The claims transformation removes the identityProvider from the collection.
OutputClaim collection alternativeSecurityIdCollection The claim that is produced after this claims transformation has been invoked. The new collection, after the identityProvider removed from the collection.

Example of RemoveAlternativeSecurityIdByIdentityProvider

The following example unlinks one of the social identities with an existing account. To unlink a social identity:

  1. In the AAD-UserReadUsingAlternativeSecurityId and AAD-UserReadUsingObjectId technical profiles, output the user's alternativeSecurityIds claim.
  2. Ask the user to select which social account to remove from the list identity providers that are associated with this user.
  3. Call a claims transformation technical profile that calls the RemoveAlternativeSecurityIdByIdentityProvider claims transformation, that removed the selected social identity, using identity provider name.
  4. Persist the alternativeSecurityIds claim to the user account.
<ClaimsTransformation Id="RemoveAlternativeSecurityIdByIdentityProvider" TransformationMethod="RemoveAlternativeSecurityIdByIdentityProvider">
    <InputClaims>
        <InputClaim ClaimTypeReferenceId="secondIdentityProvider" TransformationClaimType="identityProvider" />
        <InputClaim ClaimTypeReferenceId="AlternativeSecurityIds" TransformationClaimType="collection" />
    </InputClaims>
    <OutputClaims>
        <OutputClaim ClaimTypeReferenceId="AlternativeSecurityIds" TransformationClaimType="collection" />
    </OutputClaims>
</ClaimsTransformation>
</ClaimsTransformations>
  • Input claims:
    • identityProvider: facebook.com
    • collection: [ { "issuer": "live.com", "issuerUserId": "MTA4MTQ2MDgyOTI3MDUyNTYzMjcw" }, { "issuer": "facebook.com", "issuerUserId": "MTIzNDU=" } ]
  • Output claims:
    • collection: [ { "issuer": "live.com", "issuerUserId": "MTA4MTQ2MDgyOTI3MDUyNTYzMjcw" } ]

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