Not able to validate JSON Web Token with .NET – key too short

Question

I have used JSONWebToken npm module to generate a jwt:

var jwt = require(\'jsonwebtoken\');

var payload = {
    \"iss\": \"https://secure.examp         


        

Answer 1

Try to use TextEncodings.Base64Url.Decode api from Microsoft.Owin.Security.Jwt package to decode the signing key

Then I do following to validate token:

var principal = new JwtSecurityTokenHandler().ValidateToken(jwtheader,
                        new TokenValidationParameters()
                        {
                            RequireExpirationTime = true,
                            ValidAudience = audience,
                            ValidIssuer = issuer,
                            IssuerSigningKey = new InMemorySymmetricSecurityKey(secret)
                        }, out token);