Example: C#
How to generate Vivox access tokens using C# code.
読み終わるまでの所要時間 1 分最終更新 1日前
The following code is an example of how to generate access tokens in C#.
using System;using System.Text;using System.Collections.Generic;using System.Security.Cryptography;using System.Web.Script.Serialization;namespace VxTokenGenerator{ class TokenGenerator { static void Main(string[] args) { Console.WriteLine(vxGenerateToken("secret", "issuer", 1559359105, "join", 123456, "sip:.username.@domain.vivox.com", "sip:confctl-g-channelname@domain.vivox.com")); } static string vxGenerateToken(string key, string issuer, int exp, string vxa, int vxi, string f, string t) { var claims = new Claims { iss = issuer, exp = exp, vxa = vxa, vxi = vxi, f = f, t = t }; List<string> segments = new List<string>(); // Header is static - base64url encoded {} - Can also be defined as a constant "e30" var header = Base64URLEncode("{}"); segments.Add(header); // Encode payload var claimsString = new JavaScriptSerializer().Serialize(claims); var encodedClaims = Base64URLEncode(claimsString); // Join segments to prepare for signing segments.Add(encodedClaims); string toSign = String.Join(".", segments); // Sign token with key and SHA256 string sig = SHA256Hash(key, toSign); segments.Add(sig); // Join all 3 parts of token with . and return string token = String.Join(".", segments); return token; } private static string Base64URLEncode(string plainText) { var plainTextBytes = System.Text.Encoding.UTF8.GetBytes(plainText); // Remove padding at the end var encodedString = System.Convert.ToBase64String(plainTextBytes).TrimEnd('='); // Substitute URL-safe characters string urlEncoded = encodedString.Replace("+", "-").Replace("/", "_"); return urlEncoded; } private static string SHA256Hash(string secret, string message) { var encoding = new System.Text.ASCIIEncoding(); byte[] keyByte = encoding.GetBytes(secret); byte[] messageBytes = encoding.GetBytes(message); // The instance of HMACSHA256 is constructed and disposed in this method because it is not thread safe using (var hmacsha256 = new HMACSHA256(keyByte)) { byte[] hashmessage = hmacsha256.ComputeHash(messageBytes); var hashString = Convert.ToBase64String(hashmessage).TrimEnd('='); string urlEncoded = hashString.Replace("+", "-").Replace("/", "_"); return urlEncoded; } } public class Claims { public string iss { get; set; } public int exp { get; set; } public string vxa { get; set; } public int vxi { get; set; } public string f { get; set; } public string t { get; set; } public string sub { get; set; } } }}