SteamOid2

<PackageReference Include="SteamOid2" Version="*" />

Library for integrating with Steam's Open-ID provider in .NET, as described here: https://partner.steamgames.com/doc/features/auth#website.

Available for .NET 9.0

Usage

using SteamOid2;
using SteamOid2.API;

// A DI constructor is also available using IConfiguration in the .NET and .NET Standard targets.
ISteamOid2Client client = new SteamOid2Client("http://localhost:8001/", "http://localhost:8001/openid/login");

• Redirect user to client.GetLoginUri();

• The user will log in, then a request will be sent to the backend at the callback URI.

• Use client.ParseIdReponse(uri) to see if the returned Status is successful.

• Send a POST request to client.GetAuthorizeUri(uri) to ask Steam to confirm that the Steam ID provided was actually logged in to (from the backend).

• Use client.CheckAuthorizationResponse(response) to check that the response from the POST indicates a valid login session.

If you're seeing Error when you try to log in from Steam, make sure the realm domain name is the same as the callback domain name.

Generating a Strong Name Key/Pair

For .NET 5+ assemblies, there is no benefit to strong-named assemblies. The runtime does not validate the signature, nor does it use the strong-name for assembly blinding.

Sample implementation with a console application and HttpListener

https://github.com/UncreatedStaff/SteamOid2/blob/master/SteamOid2.Sample/LoginHost.cs

Steam Logo

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