#### [Abblix\.Oidc\.Server](https://www.abblix.com/en/docs/api/abblix-oidc-server 'index')
### [Abblix\.Oidc\.Server\.Model](https://www.abblix.com/en/docs/api/abblix-oidc-server/Abblix.Oidc.Server.Model 'Abblix\.Oidc\.Server\.Model')

## BackChannelAuthenticationRequest Class

Parameters of a Client\-Initiated Backchannel Authentication \(CIBA\) request as defined in
OpenID Connect Client\-Initiated Backchannel Authentication Flow Core 1\.0 §7\. The client posts these to
the `backchannel_authentication_endpoint` to ask the OP to authenticate the end\-user asynchronously
\(out of band, on a separate device\); the OP returns a `auth_req_id` the client then redeems
at the token endpoint via the `urn:openid:params:grant-type:ciba` grant\.

```csharp
public record BackChannelAuthenticationRequest : System.IEquatable<Abblix.Oidc.Server.Model.BackChannelAuthenticationRequest>
```

Inheritance [System\.Object](https://learn.microsoft.com/en-us/dotnet/api/system.object 'System\.Object') → BackChannelAuthenticationRequest

Implements [System\.IEquatable&lt;](https://learn.microsoft.com/en-us/dotnet/api/system.iequatable-1 'System\.IEquatable\`1')[BackChannelAuthenticationRequest](https://www.abblix.com/en/docs/api/abblix-oidc-server/Abblix.Oidc.Server.Model.BackChannelAuthenticationRequest 'Abblix\.Oidc\.Server\.Model\.BackChannelAuthenticationRequest')[&gt;](https://learn.microsoft.com/en-us/dotnet/api/system.iequatable-1 'System\.IEquatable\`1')
### Properties

## BackChannelAuthenticationRequest\.AcrValues Property {#Abblix.Oidc.Server.Model.BackChannelAuthenticationRequest.AcrValues}

A list of requested Authentication Context Class References \(ACRs\) that the client wishes to be used
for authentication\. ACR values indicate the level of authentication strength required,
such as multifactor authentication or biometric verification\.

```csharp
public string[]? AcrValues { get; init; }
```

#### Property Value
[System\.String](https://learn.microsoft.com/en-us/dotnet/api/system.string 'System\.String')[\[\]](https://learn.microsoft.com/en-us/dotnet/api/system.array 'System\.Array')

## BackChannelAuthenticationRequest\.AuthorizationDetails Property {#Abblix.Oidc.Server.Model.BackChannelAuthenticationRequest.AuthorizationDetails}

RFC 9396 §3 Rich Authorization Requests array stored as the raw wire
[System\.Text\.Json\.Nodes\.JsonArray](https://learn.microsoft.com/en-us/dotnet/api/system.text.json.nodes.jsonarray 'System\.Text\.Json\.Nodes\.JsonArray')\. CIBA flows accept `authorization_details` by spec
reference; the array carries through to the eventual access token issued via the
CIBA grant byte\-exact \(member order and type\-specific payload preserved\)\.

```csharp
public System.Text.Json.Nodes.JsonArray? AuthorizationDetails { get; init; }
```

#### Property Value
[System\.Text\.Json\.Nodes\.JsonArray](https://learn.microsoft.com/en-us/dotnet/api/system.text.json.nodes.jsonarray 'System\.Text\.Json\.Nodes\.JsonArray')

## BackChannelAuthenticationRequest\.BindingMessage Property {#Abblix.Oidc.Server.Model.BackChannelAuthenticationRequest.BindingMessage}

A human\-readable message intended to be shown to the user, providing context or instructions for
the authentication process\.
This message is often used to help the user understand the purpose of the authentication request\.

```csharp
public string? BindingMessage { get; init; }
```

#### Property Value
[System\.String](https://learn.microsoft.com/en-us/dotnet/api/system.string 'System\.String')

## BackChannelAuthenticationRequest\.Claims Property {#Abblix.Oidc.Server.Model.BackChannelAuthenticationRequest.Claims}

The detailed request for specific claims \(user attributes\) to be included in the ID token or
returned from the UserInfo endpoint\.

```csharp
public Abblix.Oidc.Server.Model.RequestedClaims? Claims { get; init; }
```

#### Property Value
[RequestedClaims](https://www.abblix.com/en/docs/api/abblix-oidc-server/Abblix.Oidc.Server.Model.RequestedClaims 'Abblix\.Oidc\.Server\.Model\.RequestedClaims')

## BackChannelAuthenticationRequest\.ClientNotificationToken Property {#Abblix.Oidc.Server.Model.BackChannelAuthenticationRequest.ClientNotificationToken}

A token issued by the client that the authorization server uses to notify the client about the result
of the authentication request\. This token allows the authorization server to securely deliver
the authentication result to the client\.

```csharp
public string? ClientNotificationToken { get; init; }
```

#### Property Value
[System\.String](https://learn.microsoft.com/en-us/dotnet/api/system.string 'System\.String')

## BackChannelAuthenticationRequest\.IdTokenHint Property {#Abblix.Oidc.Server.Model.BackChannelAuthenticationRequest.IdTokenHint}

An ID token previously issued to the client, used as a hint to identify the user for authentication\.
The ID token hint can be used by the authorization server to verify the user's identity without
requiring re\-authentication\.

```csharp
public string? IdTokenHint { get; init; }
```

#### Property Value
[System\.String](https://learn.microsoft.com/en-us/dotnet/api/system.string 'System\.String')

## BackChannelAuthenticationRequest\.LoginHint Property {#Abblix.Oidc.Server.Model.BackChannelAuthenticationRequest.LoginHint}

A hint about the user's login identifier \(such as email or username\), used by the authorization server
to identify the user for authentication\. This can help streamline the authentication process
by pre\-filling the user's information\.

```csharp
public string? LoginHint { get; init; }
```

#### Property Value
[System\.String](https://learn.microsoft.com/en-us/dotnet/api/system.string 'System\.String')

## BackChannelAuthenticationRequest\.LoginHintToken Property {#Abblix.Oidc.Server.Model.BackChannelAuthenticationRequest.LoginHintToken}

A token used to pass a hint about the login identifier to the authorization server\.
This token is typically used to identify the user for the authentication process\.

```csharp
public string? LoginHintToken { get; init; }
```

#### Property Value
[System\.String](https://learn.microsoft.com/en-us/dotnet/api/system.string 'System\.String')

## BackChannelAuthenticationRequest\.Request Property {#Abblix.Oidc.Server.Model.BackChannelAuthenticationRequest.Request}

An optional parameter that contains a signed JWT \(JSON Web Token\) which encodes the entire authentication request\.
This JWT can be used to pass the authentication request parameters in a compact and secure manner\.
It allows the client to include all necessary request information without relying on query parameters or other
HTTP mechanisms\. The request parameter can also be used to sign and optionally encrypt the entire request,
providing additional security for sensitive data\.

```csharp
public string? Request { get; init; }
```

#### Property Value
[System\.String](https://learn.microsoft.com/en-us/dotnet/api/system.string 'System\.String')

## BackChannelAuthenticationRequest\.RequestedExpiry Property {#Abblix.Oidc.Server.Model.BackChannelAuthenticationRequest.RequestedExpiry}

An optional parameter that specifies the requested expiry time for the authentication request\.
This defines how long the authentication request remains valid before it expires\.

```csharp
public System.Nullable<System.TimeSpan> RequestedExpiry { get; init; }
```

#### Property Value
[System\.Nullable&lt;](https://learn.microsoft.com/en-us/dotnet/api/system.nullable-1 'System\.Nullable\`1')[System\.TimeSpan](https://learn.microsoft.com/en-us/dotnet/api/system.timespan 'System\.TimeSpan')[&gt;](https://learn.microsoft.com/en-us/dotnet/api/system.nullable-1 'System\.Nullable\`1')

## BackChannelAuthenticationRequest\.Resources Property {#Abblix.Oidc.Server.Model.BackChannelAuthenticationRequest.Resources}

Specifies the resource for which the access token is requested\.
As defined in RFC 8707, this parameter is used to request access tokens with a specific scope for a particular
resource\.

```csharp
public System.Uri[]? Resources { get; set; }
```

#### Property Value
[System\.Uri](https://learn.microsoft.com/en-us/dotnet/api/system.uri 'System\.Uri')[\[\]](https://learn.microsoft.com/en-us/dotnet/api/system.array 'System\.Array')

## BackChannelAuthenticationRequest\.Scope Property {#Abblix.Oidc.Server.Model.BackChannelAuthenticationRequest.Scope}

A space\-separated list of scopes requested by the client\. Scopes define the level of access requested by
the client and the types of information that the client wants to retrieve from the user's account\.

```csharp
public string[] Scope { get; init; }
```

#### Property Value
[System\.String](https://learn.microsoft.com/en-us/dotnet/api/system.string 'System\.String')[\[\]](https://learn.microsoft.com/en-us/dotnet/api/system.array 'System\.Array')

## BackChannelAuthenticationRequest\.UserCode Property {#Abblix.Oidc.Server.Model.BackChannelAuthenticationRequest.UserCode}

A user code provided by the user, typically as a reference for the authentication request\.
This code is often used in scenarios where the user is identified by a code that they provide to the client\.

```csharp
public string? UserCode { get; init; }
```

#### Property Value
[System\.String](https://learn.microsoft.com/en-us/dotnet/api/system.string 'System\.String')