JsonWebToken library for AsymmetricJwk

khandokarsabbir · May 11, 2020, 12:18pm

Hi
I am working on .Net and interested to use JsonWebToken for Signing Purpose. i want to implement Using OAuth 2.0 for Server to Server Applications in google. The only signing algorithm supported by the Google OAuth 2.0 Authorization Server is RSA using SHA-256 hashing algorithm. I have the private key in my hand.i need to initialize AsymmetricJwk, i think. But the example JsonWebToken only showing SymmetricJwk.Can you Please help me, how can i initialize AsymmetricJwk using Private Key.

Thanks

dan.woda · May 12, 2020, 4:58pm

Hi @khandokarsabbir,

Welcome to the Community!

Since this is not an Auth0 library I will not be an expert here, but it looks like there is an AsymmetricJwk function that you can use and pass the key to.

github.com

uruk-project/Jwt/blob/master/src/JsonWebToken/AsymmetricJwk.cs#L47


      
          // Copyright (c) 2020 Yann Crumeyrolle. All rights reserved.
          // Licensed under the MIT license. See LICENSE in the project root for license information.
          
          
using System;
          
          
namespace JsonWebToken
          {
              /// <summary>Represents an asymmetric JSON Web Key as defined in https://tools.ietf.org/html/rfc7518#section-6.</summary>
              public abstract class AsymmetricJwk : Jwk
              {
                  /// <summary>Initializes a new instance of the <see cref="AsymmetricJwk"/> class.</summary>
                  protected AsymmetricJwk()
                  {
                  }
          
          
        /// <summary>Initializes a new instance of the <see cref="AsymmetricJwk"/> class.</summary>
                  protected AsymmetricJwk(SignatureAlgorithm alg)
                      : base(alg)
                  {
                  }
          
          
        /// <summary>Initializes a new instance of the <see cref="AsymmetricJwk"/> class.</summary>
                  protected AsymmetricJwk(KeyManagementAlgorithm alg)
                      : base(alg)
                  {
                  }
          
          
        /// <summary>Gets a bool indicating if a private key exists.</summary>
                  /// <return>true if it has a private key; otherwise, false.</return>
                  public abstract bool HasPrivateKey { get; }
          
          
        /// <summary>Extracts the public part of the <see cref="Jwk"/>.</summary>
                  public abstract Jwk AsPublicKey();
              }
          }

Hope this helps,
Dan

dan.woda · May 26, 2020, 9:00pm

This topic was automatically closed 14 days after the last reply. New replies are no longer allowed.

Topic		Replies	Views
A Logical Hurdle Relating to JWT Signing Help	3	2300	April 23, 2021
Jwt verification error Help jwt , auth0	3	7371	September 4, 2019
RSA256/JWKS JWT validation using Auth0's `java-jwt` and `jwks-rsa-java` Help java-jwt-support-doc	5	21696	October 17, 2022
How to generate secret key programmatically via auth0 jwt? Help configuration , application	3	1688	April 14, 2023
How to forge an RS256 token with the Signing Key Help test , other	4	6016	June 9, 2023

JsonWebToken library for AsymmetricJwk

Related topics