return Convert.ToBase64String(ms.ToArray());
}
catch (Exception ex)
{
throw ex;
}
}
//解密，使用密码产生加密算法的公钥，并使用TripleDES对加密数据进行解密。
public static string Decrypt(string str, string pass)
{
try
{
byte[] bt = Convert.FromBase64String(str);
PasswordDeriveBytes pdb = new PasswordDeriveBytes(pass, null);
byte[] key = pdb.GetBytes(24);
byte[] iv = pdb.GetBytes(8);
MemoryStream ms = new MemoryStream();
TripleDESCryptoServiceProvider tdesc = new TripleDESCryptoServiceProvider();
CryptoStream cs = new CryptoStream(ms, tdesc.CreateDecryptor(key, iv), CryptoStreamMode.Write);
cs.Write(bt, 0, bt.Length);
cs.FlushFinalBlock();
