> For the complete documentation index, see [llms.txt](https://help.santesuite.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.santesuite.org/developers/server-plugins/implementing-.net-features/service-definitions/session-authentication-provider.md).

# Session Authentication Provider

`ISessionIdentityProviderService` in assembly SanteDB.Core.Api version 3.0.1980.0

## Summary

Represents a session identity service that can provide identities

## Operations

| Operation     | Response/Return | Input/Parameter        | Description                                                   |
| ------------- | --------------- | ---------------------- | ------------------------------------------------------------- |
| Authenticate  | IPrincipal      | *ISession* **session** | Authenticate based on session                                 |
| GetIdentities | IIdentity\[]    | *ISession* **session** | Gets an un-authenticated principal from the specified session |

## Implementations

### MemorySessionManagerService - (SanteDB.Caching.Memory)

Represents a [ISessionProviderService](http://santesuite.org/assets/doc/net/html/T_SanteDB_Core_Security_Services_ISessionProviderService.htm) which uses RAM caching

#### Service Registration

```markup
...
<section xsi:type="ApplicationServiceContextConfigurationSection" threadPoolSize="4">
	<serviceProviders>
		...
		<add type="SanteDB.Caching.Memory.Session.MemorySessionManagerService, SanteDB.Caching.Memory, Version=3.0.1980.0, Culture=neutral, PublicKeyToken=null" />
		...
	</serviceProviders>
```

### BridgedSessionManager - (SanteDB.Client)

Represents a bridged session provider manager

#### Description

This class is responsible for managing local sessions (via a synchronized pattern) as well as upstream sessions which need to interact with the upstream, as well as transitioning between the two.

#### Service Registration

```markup
...
<section xsi:type="ApplicationServiceContextConfigurationSection" threadPoolSize="4">
	<serviceProviders>
		...
		<add type="SanteDB.Client.Upstream.Security.BridgedSessionManager, SanteDB.Client, Version=3.0.1980.0, Culture=neutral, PublicKeyToken=null" />
		...
	</serviceProviders>
```

### AdoSessionProvider - (SanteDB.Persistence.Data)

An identity provider service that uses the ADO session table

#### Service Registration

```markup
...
<section xsi:type="ApplicationServiceContextConfigurationSection" threadPoolSize="4">
	<serviceProviders>
		...
		<add type="SanteDB.Persistence.Data.Services.AdoSessionProvider, SanteDB.Persistence.Data, Version=3.0.1980.0, Culture=neutral, PublicKeyToken=null" />
		...
	</serviceProviders>
```

## Example Implementation

```csharp
/// Example Implementation
using SanteDB.Core.Security.Services;
/// Other usings here
public class MySessionIdentityProviderService : SanteDB.Core.Security.Services.ISessionIdentityProviderService { 
	public String ServiceName => "My own ISessionIdentityProviderService service";
	/// <summary>
	/// Authenticate based on session
	/// </summary>
	public IPrincipal Authenticate(ISession session){
		throw new System.NotImplementedException();
	}
	/// <summary>
	/// Gets an un-authenticated principal from the specified session
	/// </summary>
	public IIdentity[] GetIdentities(ISession session){
		throw new System.NotImplementedException();
	}
}
```

## References

* [ISessionIdentityProviderService C# Documentation](http://santesuite.org/assets/doc/net/html/T_SanteDB_Core_Security_Services_ISessionIdentityProviderService.htm)
* [MemorySessionManagerService C# Documentation](http://santesuite.org/assets/doc/net/html/T_SanteDB_Caching_Memory_Session_MemorySessionManagerService.htm)
* [BridgedSessionManager C# Documentation](http://santesuite.org/assets/doc/net/html/T_SanteDB_Client_Upstream_Security_BridgedSessionManager.htm)
* [AdoSessionProvider C# Documentation](http://santesuite.org/assets/doc/net/html/T_SanteDB_Persistence_Data_Services_AdoSessionProvider.htm)


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