I will help translate this function into C #'s thanks to the big hacker of PHP ~~

UsingSystem; usingSystem. Text; usingSystem. Security. Cryptography; publicclassProgram {privateconststringkeykey; privateconststringmessagemessage; cipher. UTF8; static

Using System; using System. text; using System. security. cryptography; public class Program {private const string key = "key"; private const string message = "message"; private static readonly Encoding encoding = Encoding. UTF8; static

Using System;

Using System. Text;

Using System. Security. Cryptography;

Public class Program {

Private const string key = "key ";

Private const string message = "message ";

Private static readonly Encoding encoding = Encoding. UTF8;

Static void Main (string [] args ){

Var keyByte = encoding. GetBytes (key );

Using (var hmacsha256 = new HMACSHA256 (keyByte) {hmacsha256.ComputeHash (encoding. GetBytes (message ));

Console. WriteLine ("Result: {0}", ByteToString (hmacsha256.Hash ));

}

}

Static string ByteToString (byte [] buff ){

String sbinary = "";

For (int I = 0; I <buff. Length; I ++)

Sbinary + = buff [I]. ToString ("X2 ");

/* Hex format */return sbinary ;}

}