.NET Core IssuerSigningKey from file for JWT Bearer Authentication

Question

I am struggling with the implementation (or the understanding) of signing keys for JWT Bearer Token authentication. And I hope somebody can help me or explain me what I am m

Answer 1

Oh dear, that simple:

SecurityKey key = new X509SecurityKey(cert);

Or as complete sample from above:

X509Certificate2 cert = new X509Certificate2("MySelfSignedCertificate.pfx", "password");
SecurityKey key = new X509SecurityKey(cert); //well, seems to be that simple
app.UseJwtBearerAuthentication(new JwtBearerOptions
{
    AutomaticAuthenticate = true,
    AutomaticChallenge = true,
    TokenValidationParameters = new TokenValidationParameters
    {
        ValidateIssuer = true,
        ValidIssuer = "MyIssuer",
        ValidateAudience = true,
        ValidAudience = "MyAudience",
        ValidateLifetime = true,
        IssuerSigningKey = key
     }
});