/// <summary>
/// 分页页码解密
/// </summary>
/// <param name="content"></param>
/// <returns></returns>
public static int PagerNumDecrypt(string content, bool isThrowError = false)
{
if (string.IsNullOrEmpty(content))
{
return(1);
}
/* try
* {*/
int result;
// 分页解密
var pagerEncryptKey = ConfigurationManager.AppSettings["PagerEncryptKey"];
var removeValue = content.Remove(0, 2);
removeValue = removeValue.Substring(0, removeValue.Length - 3);
var tagerRemoveValue = removeValue.Remove(((removeValue.Length - 32) / 2), 32);
int.TryParse(CryptTools.Decrypt(tagerRemoveValue, pagerEncryptKey, isThrowError), out result);
return(result);
/*}
* catch (Exception)
* {
* return 1;
* }
*/
}
/// <summary>
/// 分页页码加密
/// 页码加密规则如下：
/// 1.加密/使用对称加密 密钥是web.config的appSetting Key 为PagerEncryptKey的值
/// 2.混淆/随机生成一个MD5 对使用对称加密后的字符串/2 取中间位置 将MD5插入中间
/// 3.在首位插入2位随机字母或数字 最后插入3位随机字母或数字
/// </summary>
/// <returns></returns>
public static string PagerNumEncrypt(int num, bool isThrowError = false)
{
// 分页加密密钥
var pagerEncryptKey = ConfigurationManager.AppSettings["PagerEncryptKey"];
// 对称加密
var str = CryptTools.Encrypt(num.ToString(CultureInfo.InvariantCulture), pagerEncryptKey, isThrowError);
// 获取混淆位置
var startIndex = str.Length / 2;
// 混淆加密
var garble = Guid.NewGuid().ToString("N");
// 加入混淆
var value = str.Insert(startIndex, garble);
return(GenerateCheckCode(2)
.ToString(CultureInfo.InvariantCulture) + value +
GenerateCheckCode(3));
}
