01.public static string CreateSign(this string timeStamp, string partnername, string key)
02.{
03. var word = partnerName.ToLower() + timeStamp + key.ToLower();
04. using (var crypt = new SHA256Managed())
05. {
06. var hash = new StringBuilder();
07. var crypto = crypt.ComputeHash(Encoding.UTF8.GetBytes(word), 0,
08. Encoding.UTF8.GetByteCount(word));
09. foreach (var theByte in crypto){
10. hash.Append(theByte.ToString("x2"));
11. }
12. return hash.ToString();
13. }
14.}
