Mode White-Label Embed Token Security

Program.cs

using System;
using System.Globalization;
using System.Text.RegularExpressions;
using System.Text;
using System.Security.Cryptography;
					
public class Program
{
	public static void Main()
	{
    		//https://help.modeanalytics.com/articles/setting-up-white-label-embeds/
    
		string accessKey = "abcd";
		string accessSecret = "1234";
		string timestamp = "1000";
		var url = "https://modeanalytics.com/demo/reports/aaabbcccddd/embed?access_key=abcd&max_age=3600&param_foo=bar&timestamp=1000";

		var request = string.Join(",", new string[] { "GET", "", "1B2M2Y8AsgTpgAmY7PhCfg==", url, timestamp });
		
		var signature = HashHmac(request, accessSecret);
	
		var signedUrl = string.Format("{0}&signature={1}", url, signature);
		
		Console.WriteLine(signedUrl);

	}
	
	public static string HashHmac(string value, string secret)
	{
    		byte[] valueByteArray = Encoding.ASCII.GetBytes(value);
    		byte[] secretByteArray = Encoding.ASCII.GetBytes(secret);

    		using (var hmacSha256 = new HMACSHA256(secretByteArray))
    		{
    			var hashedValue = hmacSha256.ComputeHash(valueByteArray);
    			return BitConverter.ToString(hashedValue).ToLower().Replace("-", string.Empty);
    		}
	}
}