Im trying to generate JWT token using Code stage with Private Key, Aud, email fields. When I try to use RSACryptoServiceProvider to ImportPkcs8PrivateKey, Im getting below error
System.Service.Cryptography.RSACryptoServiceProvider does not contain ImportPkcs8PrivateKey or no extension method 'ImportPkcs8PrivateKey ' of type argument system.Service.Cryptography.RS....
I downloaded
System.Service.Cryptography.csp dll from nuget and imported in the code stage.
Could you please help me to resolve this issue.
I have taken below code as reference to generate token.
using System;
using System.IO;
using System.Security.Cryptography;
using System.IdentityModel.Tokens.Jwt;
using Microsoft.IdentityModel.Tokens;
using System.Security.Claims;
namespace AaaSDocumentation
{
class SignToken
{
static void Main(string[] args)
{
try
{
// reading the content of a private key PEM file, PKCS8 encoded
string privateKeyPem = File.ReadAllText("...");
// keeping only the payload of the key
privateKeyPem = privateKeyPem.Replace("-----BEGIN PRIVATE KEY-----", "");
privateKeyPem = privateKeyPem.Replace("-----END PRIVATE KEY-----", "");
byte[] privateKeyRaw = Convert.FromBase64String(privateKeyPem);
// creating the RSA key
RSACryptoServiceProvider provider = new RSACryptoServiceProvider();
provider.ImportPkcs8PrivateKey(new ReadOnlySpan<byte>(privateKeyRaw), out _);
RsaSecurityKey rsaSecurityKey = new RsaSecurityKey(provider);
// Generating the token
var now = DateTime.UtcNow;
var claims = new[] {
new Claim(JwtRegisteredClaimNames.Sub, "YOUR_CLIENTID"),
new Claim(JwtRegisteredClaimNames.Jti, Guid.NewGuid().ToString())
};
var handler = new JwtSecurityTokenHandler();
var token = new JwtSecurityToken
(
"YOUR_CLIENTID",
"https://AAAS_PLATFORM/idp/YOUR_TENANT/authn/token",
claims,
now.AddMilliseconds(-30),
now.AddMinutes(60),
new SigningCredentials(rsaSecurityKey, SecurityAlgorithms.RsaSha256)
);
// handler.WriteToken(token) returns the token ready to send to AaaS !
Console.WriteLine( handler.WriteToken(token) );
}
catch (Exception e)
{
Console.WriteLine(e.ToString());
Console.WriteLine(
new System.Diagnostics.StackTrace().ToString()
);
}
}
}
}------------------------------
Sheela Parthasarathy
Assistant Consultant
TCS
Pacific/Apia
------------------------------
