没有sha224

要注意每次计算完之后要把文件释放掉，再重新打开

否则会计算出错

static class MySHA    {        public static string[] GetSHAHash(string Message)        {                            string[] sha = new string[4];            try            {                SHA1 sha1 = new SHA1CryptoServiceProvider();                SHA256 sha256 = new SHA256CryptoServiceProvider();                SHA384 sha384 = new SHA384CryptoServiceProvider();                SHA512 sha512 = new SHA512CryptoServiceProvider();                byte[] sha_in = UTF8Encoding.Default.GetBytes(Message);                byte[] sha1_out = sha1.ComputeHash(sha_in);                byte[] sha256_out = sha256.ComputeHash(sha_in);                byte[] sha384_out = sha384.ComputeHash(sha_in);                byte[] sha512_out = sha512.ComputeHash(sha_in);                sha[0] = BitConverter.ToString(sha1_out).Replace("-", "");                sha[1] = BitConverter.ToString(sha256_out).Replace("-", "");                sha[2] = BitConverter.ToString(sha384_out).Replace("-", "");                sha[3] = BitConverter.ToString(sha512_out).Replace("-", "");                return sha;            }            catch { MessageBox.Show("校验失败");return sha; }        }        public static string[] GetSHAHashFromFile(string fileName)        {            string[] sha = new string[4];            try            {                                SHA1 sha1 = new SHA1CryptoServiceProvider();                SHA256 sha256 = new SHA256CryptoServiceProvider();                SHA384 sha384 = new SHA384CryptoServiceProvider();                SHA512 sha512 = new SHA512CryptoServiceProvider();                FileStream file = new FileStream(fileName, FileMode.Open);                byte[] sha1_out = sha1.ComputeHash(file);                file.Close();                file = new FileStream(fileName, FileMode.Open);                byte[] sha256_out = sha256.ComputeHash(file);                file.Close();                file = new FileStream(fileName, FileMode.Open);                byte[] sha384_out = sha384.ComputeHash(file);                file.Close();                file = new FileStream(fileName, FileMode.Open);                byte[] sha512_out = sha512.ComputeHash(file);                file.Close();                sha[0] = BitConverter.ToString(sha1_out).Replace("-", "");                sha[1] = BitConverter.ToString(sha256_out).Replace("-", "");                sha[2] = BitConverter.ToString(sha384_out).Replace("-", "");                sha[3] = BitConverter.ToString(sha512_out).Replace("-", "");                return sha;            }            catch              { MessageBox.Show("校验失败"); return sha; }                      }        }