C＃中的org.apache.commons.codec.binary.Base64

Question

I want to convert a Java class into a C# class.
The Java class includes org.apache.commons.codec.binary.Base64 and uses lots of its methods.

Is there any similar class available in C# that has the same methods and/or same functionality?

Answer 1

These may help?

Convert.FromBase64String Method

Convert.ToBase64String Method

For URL safety I would look into the JWT spec . It shows the following code:

 static string base64urlencode(byte [] arg)
 {
   string s = Convert.ToBase64String(arg); // Regular base64 encoder
   s = s.Split('=')[0]; // Remove any trailing '='s
   s = s.Replace('+', '-'); // 62nd char of encoding
   s = s.Replace('/', '_'); // 63rd char of encoding
   return s;
 }

 static byte [] base64urldecode(string arg)
 {
   string s = arg;
   s = s.Replace('-', '+'); // 62nd char of encoding
   s = s.Replace('_', '/'); // 63rd char of encoding
   switch (s.Length % 4) // Pad with trailing '='s
   {
     case 0: break; // No pad chars in this case
     case 2: s += "=="; break; // Two pad chars
     case 3: s += "="; break; // One pad char
     default: throw new System.Exception(
       "Illegal base64url string!");
   }
   return Convert.FromBase64String(s); // Standard base64 decoder
 }