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

## BackChannelAuthorizationDetailsValidator Class

Thin endpoint\-side adapter that delegates the RFC 9396 §3 CIBA
`authorization_details` validation to
[ApplyAsync\(JsonArray, ClientInfo, CancellationToken\)](https://www.abblix.com/en/docs/api/abblix-oidc-server/Abblix.Oidc.Server.Features.RichAuthorizationRequests.IAuthorizationDetailsPolicy#Abblix.Oidc.Server.Features.RichAuthorizationRequests.IAuthorizationDetailsPolicy.ApplyAsync(System.Text.Json.Nodes.JsonArray,Abblix.Oidc.Server.Features.ClientInformation.ClientInfo,System.Threading.CancellationToken) 'Abblix\.Oidc\.Server\.Features\.RichAuthorizationRequests\.IAuthorizationDetailsPolicy\.ApplyAsync\(System\.Text\.Json\.Nodes\.JsonArray, Abblix\.Oidc\.Server\.Features\.ClientInformation\.ClientInfo, System\.Threading\.CancellationToken\)')\. The composite already returns
an [OidcError](https://www.abblix.com/en/docs/api/abblix-oidc-server/Abblix.Oidc.Server.Common.OidcError 'Abblix\.Oidc\.Server\.Common\.OidcError') with `error = invalid_authorization_details`, so this
adapter just propagates it directly\. All actual policy lives on the composite
validator so /authorize, /par, CIBA and \(future\) device\-flow endpoints share one source
of truth\.

```csharp
public class BackChannelAuthorizationDetailsValidator : Abblix.Oidc.Server.Endpoints.BackChannelAuthentication.Validation.IBackChannelAuthenticationContextValidator
```

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

Implements [IBackChannelAuthenticationContextValidator](https://www.abblix.com/en/docs/api/abblix-oidc-server/Abblix.Oidc.Server.Endpoints.BackChannelAuthentication.Validation.IBackChannelAuthenticationContextValidator 'Abblix\.Oidc\.Server\.Endpoints\.BackChannelAuthentication\.Validation\.IBackChannelAuthenticationContextValidator')
### Constructors

## BackChannelAuthorizationDetailsValidator\(IAuthorizationDetailsPolicy\) Constructor {#Abblix.Oidc.Server.Endpoints.BackChannelAuthentication.Validation.BackChannelAuthorizationDetailsValidator.BackChannelAuthorizationDetailsValidator(Abblix.Oidc.Server.Features.RichAuthorizationRequests.IAuthorizationDetailsPolicy)}

Thin endpoint\-side adapter that delegates the RFC 9396 §3 CIBA
`authorization_details` validation to
[ApplyAsync\(JsonArray, ClientInfo, CancellationToken\)](https://www.abblix.com/en/docs/api/abblix-oidc-server/Abblix.Oidc.Server.Features.RichAuthorizationRequests.IAuthorizationDetailsPolicy#Abblix.Oidc.Server.Features.RichAuthorizationRequests.IAuthorizationDetailsPolicy.ApplyAsync(System.Text.Json.Nodes.JsonArray,Abblix.Oidc.Server.Features.ClientInformation.ClientInfo,System.Threading.CancellationToken) 'Abblix\.Oidc\.Server\.Features\.RichAuthorizationRequests\.IAuthorizationDetailsPolicy\.ApplyAsync\(System\.Text\.Json\.Nodes\.JsonArray, Abblix\.Oidc\.Server\.Features\.ClientInformation\.ClientInfo, System\.Threading\.CancellationToken\)')\. The composite already returns
an [OidcError](https://www.abblix.com/en/docs/api/abblix-oidc-server/Abblix.Oidc.Server.Common.OidcError 'Abblix\.Oidc\.Server\.Common\.OidcError') with `error = invalid_authorization_details`, so this
adapter just propagates it directly\. All actual policy lives on the composite
validator so /authorize, /par, CIBA and \(future\) device\-flow endpoints share one source
of truth\.

```csharp
public BackChannelAuthorizationDetailsValidator(Abblix.Oidc.Server.Features.RichAuthorizationRequests.IAuthorizationDetailsPolicy policy);
```
#### Parameters

###### `policy` [IAuthorizationDetailsPolicy](https://www.abblix.com/en/docs/api/abblix-oidc-server/Abblix.Oidc.Server.Features.RichAuthorizationRequests.IAuthorizationDetailsPolicy 'Abblix\.Oidc\.Server\.Features\.RichAuthorizationRequests\.IAuthorizationDetailsPolicy') {#Abblix.Oidc.Server.Endpoints.BackChannelAuthentication.Validation.BackChannelAuthorizationDetailsValidator.BackChannelAuthorizationDetailsValidator(Abblix.Oidc.Server.Features.RichAuthorizationRequests.IAuthorizationDetailsPolicy).policy}
### Methods

## BackChannelAuthorizationDetailsValidator\.ValidateAsync\(BackChannelAuthenticationValidationContext\) Method {#Abblix.Oidc.Server.Endpoints.BackChannelAuthentication.Validation.BackChannelAuthorizationDetailsValidator.ValidateAsync(Abblix.Oidc.Server.Endpoints.BackChannelAuthentication.Validation.BackChannelAuthenticationValidationContext)}

Asynchronously validates the backchannel authentication request context\.
This method checks the context of the request, including client information and requested parameters,
to ensure compliance with security and protocol requirements\.

```csharp
public System.Threading.Tasks.Task<Abblix.Oidc.Server.Common.OidcError?> ValidateAsync(Abblix.Oidc.Server.Endpoints.BackChannelAuthentication.Validation.BackChannelAuthenticationValidationContext context);
```
#### Parameters

###### `context` [BackChannelAuthenticationValidationContext](https://www.abblix.com/en/docs/api/abblix-oidc-server/Abblix.Oidc.Server.Endpoints.BackChannelAuthentication.Validation.BackChannelAuthenticationValidationContext 'Abblix\.Oidc\.Server\.Endpoints\.BackChannelAuthentication\.Validation\.BackChannelAuthenticationValidationContext') {#Abblix.Oidc.Server.Endpoints.BackChannelAuthentication.Validation.BackChannelAuthorizationDetailsValidator.ValidateAsync(Abblix.Oidc.Server.Endpoints.BackChannelAuthentication.Validation.BackChannelAuthenticationValidationContext).context}

The context of the backchannel authentication request that needs to be validated\.

Implements [ValidateAsync\(BackChannelAuthenticationValidationContext\)](https://www.abblix.com/en/docs/api/abblix-oidc-server/Abblix.Oidc.Server.Endpoints.BackChannelAuthentication.Validation.IBackChannelAuthenticationContextValidator#Abblix.Oidc.Server.Endpoints.BackChannelAuthentication.Validation.IBackChannelAuthenticationContextValidator.ValidateAsync(Abblix.Oidc.Server.Endpoints.BackChannelAuthentication.Validation.BackChannelAuthenticationValidationContext) 'Abblix\.Oidc\.Server\.Endpoints\.BackChannelAuthentication\.Validation\.IBackChannelAuthenticationContextValidator\.ValidateAsync\(Abblix\.Oidc\.Server\.Endpoints\.BackChannelAuthentication\.Validation\.BackChannelAuthenticationValidationContext\)')

#### Returns
[System\.Threading\.Tasks\.Task&lt;](https://learn.microsoft.com/en-us/dotnet/api/system.threading.tasks.task-1 'System\.Threading\.Tasks\.Task\`1')[OidcError](https://www.abblix.com/en/docs/api/abblix-oidc-server/Abblix.Oidc.Server.Common.OidcError 'Abblix\.Oidc\.Server\.Common\.OidcError')[&gt;](https://learn.microsoft.com/en-us/dotnet/api/system.threading.tasks.task-1 'System\.Threading\.Tasks\.Task\`1')  
A task that represents the asynchronous validation operation\. The task result contains
a [OidcError](https://www.abblix.com/en/docs/api/abblix-oidc-server/Abblix.Oidc.Server.Common.OidcError 'Abblix\.Oidc\.Server\.Common\.OidcError') if validation fails, or null if the context is valid\.