HMACSHA256 | LongSheng

public string HmacSha256(string message, string key)

{

var encoding = new ASCIIEncoding();

var keyByte = encoding.GetBytes(key);

var sha256 = new HMACSHA256(keyByte);

var messageBytes = encoding.GetBytes(message);

return Convert.ToBase64String(sha256.ComputeHash(messageBytes));

}