asp.net中如何将url地址栏中传值的数字加密

[netxiaoma]

请教大家：


Response.Redirect("function.aspx?cardno="+cardno);
string cardno=Request["cardno"].ToString();

cardno如何加密?先谢谢了。

[wuyq11]

自定义解密加密方法,des,sha,rsa等
//DES加密
public string Encrypt(string pToEncrypt, string sKey)
{
using (DESCryptoServiceProvider des = new DESCryptoServiceProvider())
{
byte[] inputByteArray = Encoding.UTF8.GetBytes(pToEncrypt);
des.Key = ASCIIEncoding.ASCII.GetBytes(sKey);
des.IV = ASCIIEncoding.ASCII.GetBytes(sKey);
System.IO.MemoryStream ms = new System.IO.MemoryStream();
using (CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(), CryptoStreamMode.Write))
{
cs.Write(inputByteArray, 0, inputByteArray.Length);
cs.FlushFinalBlock();
cs.Close();
}
string str = Convert.ToBase64String(ms.ToArray());
ms.Close();
return str;
}
}

[yangyalin8425]

[Quote=引用 4 楼 luoweihua7 的回复:]

引用 3 楼 netxiaoma 的回复:

cardno=12345,纯数字怎么加密?
最简单的.纯数字.你随便加个100.也算加密了...
[/Quote]
这个我看行，不加100能个随机数也行啊，得到后在减去哪个数就行了

[laowang134]

HttpUtility.HtmlEncode();//加密
HttpUtility.HtmlDecode();//解密

[天下在我心]

可以自己写个加密和解密的方法，使用前加密，接收后解密就行。
至于加密的方法，可以去看
http://blog.csdn.net/zhoufoxcn/archive/2007/01/29/1497095.aspx

[netxiaoma]

cardno=12345,纯数字怎么加密?

[V-Far]

[Quote=引用 3 楼 netxiaoma 的回复:]

cardno=12345,纯数字怎么加密?
[/Quote]最简单的.纯数字.你随便加个100.也算加密了...

[ltcszk]

   public class EncryptionDecryption
    {
        const string KEY_64 = "EavicCpp";//密匙，8个字符，64位   

        const string IV_64 = "EavicCpp";



        #region EnCode 加密
        /// <summary>   
        /// EnCode 加密   
        /// </summary>   
        /// <param name="str">要加密的字符串</param>   
        /// <returns></returns>   

        public static string EnCode(string data)
        {
            byte[] byKey = System.Text.ASCIIEncoding.ASCII.GetBytes(KEY_64);
            byte[] byIV = System.Text.ASCIIEncoding.ASCII.GetBytes(IV_64);

            DESCryptoServiceProvider cryptoProvider = new DESCryptoServiceProvider();
            int i = cryptoProvider.KeySize;
            MemoryStream ms = new MemoryStream();
            CryptoStream cst = new CryptoStream(ms, cryptoProvider.CreateEncryptor(byKey,

    byIV), CryptoStreamMode.Write);

            StreamWriter sw = new StreamWriter(cst);
            sw.Write(data);
            sw.Flush();
            cst.FlushFinalBlock();
            sw.Flush();
            return Convert.ToBase64String(ms.GetBuffer(), 0, (int)ms.Length);
        }
        #endregion

        #region DeCode 解密
        /// <summary>   
        /// DeCode 解密   
        /// </summary>   
        /// <param name="str">要解密的字符串</param>   
        /// <returns></returns>   
        public static string DeCode(string data)
        {
            byte[] byKey = System.Text.ASCIIEncoding.ASCII.GetBytes(KEY_64);
            byte[] byIV = System.Text.ASCIIEncoding.ASCII.GetBytes(IV_64);

            byte[] byEnc;
            try
            {
                byEnc = Convert.FromBase64String(data);
            }
            catch
            {
                return null;
            }

            DESCryptoServiceProvider cryptoProvider = new DESCryptoServiceProvider();
            MemoryStream ms = new MemoryStream(byEnc);
            CryptoStream cst = new CryptoStream(ms, cryptoProvider.CreateDecryptor(byKey,

    byIV), CryptoStreamMode.Read);
            StreamReader sr = new StreamReader(cst);
            return sr.ReadToEnd();
        }
        #endregion
    }