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

## NoneClientAuthenticator Class

Authenticates clients that are configured as public, without requiring client secrets\.

```csharp
public class NoneClientAuthenticator : Abblix.Oidc.Server.Features.ClientAuthentication.IClientAuthenticator
```

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

Implements [IClientAuthenticator](https://www.abblix.com/en/docs/api/abblix-oidc-server/Abblix.Oidc.Server.Features.ClientAuthentication.IClientAuthenticator 'Abblix\.Oidc\.Server\.Features\.ClientAuthentication\.IClientAuthenticator')

### Remarks
This authenticator is designed for public clients where client secrets cannot be securely stored\. It ensures that
only clients marked as public in the configuration are allowed to proceed without client authentication\.
This approach is typically used in scenarios where the client application runs in an environment that
cannot securely maintain a secret, such as single\-page applications or native mobile apps\.
### Constructors

## NoneClientAuthenticator\(ILogger\<NoneClientAuthenticator\>, IClientInfoProvider\) Constructor {#Abblix.Oidc.Server.Features.ClientAuthentication.NoneClientAuthenticator.NoneClientAuthenticator(Microsoft.Extensions.Logging.ILogger_Abblix.Oidc.Server.Features.ClientAuthentication.NoneClientAuthenticator_,Abblix.Oidc.Server.Features.ClientInformation.IClientInfoProvider)}

Authenticates clients that are configured as public, without requiring client secrets\.

```csharp
public NoneClientAuthenticator(Microsoft.Extensions.Logging.ILogger<Abblix.Oidc.Server.Features.ClientAuthentication.NoneClientAuthenticator> logger, Abblix.Oidc.Server.Features.ClientInformation.IClientInfoProvider clientInfoProvider);
```
#### Parameters

###### `logger` [Microsoft\.Extensions\.Logging\.ILogger&lt;](https://learn.microsoft.com/en-us/dotnet/api/microsoft.extensions.logging.ilogger-1 'Microsoft\.Extensions\.Logging\.ILogger\`1')[NoneClientAuthenticator](https://www.abblix.com/en/docs/api/abblix-oidc-server/Abblix.Oidc.Server.Features.ClientAuthentication.NoneClientAuthenticator 'Abblix\.Oidc\.Server\.Features\.ClientAuthentication\.NoneClientAuthenticator')[&gt;](https://learn.microsoft.com/en-us/dotnet/api/microsoft.extensions.logging.ilogger-1 'Microsoft\.Extensions\.Logging\.ILogger\`1') {#Abblix.Oidc.Server.Features.ClientAuthentication.NoneClientAuthenticator.NoneClientAuthenticator(Microsoft.Extensions.Logging.ILogger_Abblix.Oidc.Server.Features.ClientAuthentication.NoneClientAuthenticator_,Abblix.Oidc.Server.Features.ClientInformation.IClientInfoProvider).logger}

The logger for logging authentication events\.

###### `clientInfoProvider` [IClientInfoProvider](https://www.abblix.com/en/docs/api/abblix-oidc-server/Abblix.Oidc.Server.Features.ClientInformation.IClientInfoProvider 'Abblix\.Oidc\.Server\.Features\.ClientInformation\.IClientInfoProvider') {#Abblix.Oidc.Server.Features.ClientAuthentication.NoneClientAuthenticator.NoneClientAuthenticator(Microsoft.Extensions.Logging.ILogger_Abblix.Oidc.Server.Features.ClientAuthentication.NoneClientAuthenticator_,Abblix.Oidc.Server.Features.ClientInformation.IClientInfoProvider).clientInfoProvider}

The provider for retrieving client information\.

### Remarks
This authenticator is designed for public clients where client secrets cannot be securely stored\. It ensures that
only clients marked as public in the configuration are allowed to proceed without client authentication\.
This approach is typically used in scenarios where the client application runs in an environment that
cannot securely maintain a secret, such as single\-page applications or native mobile apps\.
### Properties

## NoneClientAuthenticator\.ClientAuthenticationMethodsSupported Property {#Abblix.Oidc.Server.Features.ClientAuthentication.NoneClientAuthenticator.ClientAuthenticationMethodsSupported}

Indicates the client authentication method supported by this authenticator\.
For this authenticator, no client authentication is required, aligning with scenarios where
client authentication is deemed unnecessary or where anonymous access is permitted\.

```csharp
public System.Collections.Generic.IEnumerable<string> ClientAuthenticationMethodsSupported { get; }
```

Implements [ClientAuthenticationMethodsSupported](https://www.abblix.com/en/docs/api/abblix-oidc-server/Abblix.Oidc.Server.Features.ClientAuthentication.IClientAuthenticator#Abblix.Oidc.Server.Features.ClientAuthentication.IClientAuthenticator.ClientAuthenticationMethodsSupported 'Abblix\.Oidc\.Server\.Features\.ClientAuthentication\.IClientAuthenticator\.ClientAuthenticationMethodsSupported')

#### Property Value
[System\.Collections\.Generic\.IEnumerable&lt;](https://learn.microsoft.com/en-us/dotnet/api/system.collections.generic.ienumerable-1 'System\.Collections\.Generic\.IEnumerable\`1')[System\.String](https://learn.microsoft.com/en-us/dotnet/api/system.string 'System\.String')[&gt;](https://learn.microsoft.com/en-us/dotnet/api/system.collections.generic.ienumerable-1 'System\.Collections\.Generic\.IEnumerable\`1')
### Methods

## NoneClientAuthenticator\.TryAuthenticateClientAsync\(ClientRequest\) Method {#Abblix.Oidc.Server.Features.ClientAuthentication.NoneClientAuthenticator.TryAuthenticateClientAsync(Abblix.Oidc.Server.Model.ClientRequest)}

Attempts to authenticate a client based solely on its ID, without requiring a client secret\.

```csharp
public System.Threading.Tasks.Task<Abblix.Oidc.Server.Features.ClientInformation.ClientInfo?> TryAuthenticateClientAsync(Abblix.Oidc.Server.Model.ClientRequest request);
```
#### Parameters

###### `request` [ClientRequest](https://www.abblix.com/en/docs/api/abblix-oidc-server/Abblix.Oidc.Server.Model.ClientRequest 'Abblix\.Oidc\.Server\.Model\.ClientRequest') {#Abblix.Oidc.Server.Features.ClientAuthentication.NoneClientAuthenticator.TryAuthenticateClientAsync(Abblix.Oidc.Server.Model.ClientRequest).request}

The client request containing the client's ID\.

Implements [TryAuthenticateClientAsync\(ClientRequest\)](https://www.abblix.com/en/docs/api/abblix-oidc-server/Abblix.Oidc.Server.Features.ClientAuthentication.IClientAuthenticator#Abblix.Oidc.Server.Features.ClientAuthentication.IClientAuthenticator.TryAuthenticateClientAsync(Abblix.Oidc.Server.Model.ClientRequest) 'Abblix\.Oidc\.Server\.Features\.ClientAuthentication\.IClientAuthenticator\.TryAuthenticateClientAsync\(Abblix\.Oidc\.Server\.Model\.ClientRequest\)')

#### Returns
[System\.Threading\.Tasks\.Task&lt;](https://learn.microsoft.com/en-us/dotnet/api/system.threading.tasks.task-1 'System\.Threading\.Tasks\.Task\`1')[ClientInfo](https://www.abblix.com/en/docs/api/abblix-oidc-server/Abblix.Oidc.Server.Features.ClientInformation.ClientInfo 'Abblix\.Oidc\.Server\.Features\.ClientInformation\.ClientInfo')[&gt;](https://learn.microsoft.com/en-us/dotnet/api/system.threading.tasks.task-1 'System\.Threading\.Tasks\.Task\`1')  
A task that returns the authenticated [ClientInfo](https://www.abblix.com/en/docs/api/abblix-oidc-server/Abblix.Oidc.Server.Features.ClientInformation.ClientInfo 'Abblix\.Oidc\.Server\.Features\.ClientInformation\.ClientInfo')
            if successful, or null if authentication fails\.

### Remarks
This method is suitable for public clients where a secret is not issued or cannot be securely stored\.
It verifies the existence of the client and ensures it is marked as a public client in the configuration\.
Clients not meeting these criteria are not authenticated\.