Correct way of authentication in C# #914

JohnCido · 2022-02-17T13:34:15Z

JohnCido
Feb 17, 2022

I've tried to implement the authentication in my Windows App SDK app. But the auth seems always fail. I can see my client appears on the obs-websocket settings window.
This is my authentication string generation:

var secret = Helpers.Base64Encode(Helpers.ComputeSha256Hash($"{Password}{auth.salt}"));
var pass = Helpers.Base64Encode(Helpers.ComputeSha256Hash($"{secret}{auth.challenge}"));
data.authentication = pass;

All the JSON are correctly deserialized. The password is correct too.

And these are the helper functions:

private static byte[] GetUtf8Bytes(string input)
{
    return Encoding.UTF8.GetBytes(input);
}

public static string Base64Encode(string input)
{
    return Convert.ToBase64String(GetUtf8Bytes(input));
}

public static string ComputeSha256Hash(string input)
{
    // Create a SHA256
    using SHA256 sha256Hash = SHA256.Create();
    // ComputeHash - returns byte array
    byte[] bytes = sha256Hash.ComputeHash(GetUtf8Bytes(input));

    // Convert byte array to a input
    StringBuilder builder = new();
    foreach (var b in bytes)
    {
        builder.Append(b.ToString("x2"));
    }
    return builder.ToString();
}