S22.Sasl: A C# repository from ztzg

Introduction

This repository contains a .NET assembly implementing the "Authentication and Security Layer" (SASL) framework. SASL specifies a protocol for authentication and optional establishment of a security layer between client and server applications and is used by internet protocols such as IMAP, POP3, SMTP, XMPP and others.

Usage & Examples

To use the library add the S22.Sasl.dll assembly to your project references in Visual Studio. Here's a simple example which instantiates a new instance of the Digest-Md5 authentication mechanism and demonstrates how it can be used to perform authentication.

using System;
using S22.Sasl;

namespace Test {
	class Program {
		static void Main(string[] args) {
			SaslMechanism m = SaslFactory.Create("Digest-Md5");

			// Add properties needed by authentication mechanism.
			m.Properties.Add("Username", "Foo");
			m.Properties.Add("Password", "Bar");

			while(!m.IsCompleted)
			{
				byte[] serverChallenge = GetDataFromServer(...);
				byte[] clientResponse = m.ComputeResponse(serverChallenge);

				SendMyDataToServer(clientResponse);
			}
		}
	}
}

Features

The library supports the following authentication mechanisms:

Plain
Cram-Md5
NTLM
NTLMv2
OAuth
OAuth 2.0
Digest-Md5
Scram-Sha-1
SRP

Custom SASL Security Providers can be implemented through a simple plugin mechanism.

Credits

License

This library is released under the MIT license.

Bug reports