cookie问题！！兼散分！！
请问那位大家指点一下如何对cookie进行加密。最好能给一个具体的例子。万分感谢！
[解决办法]
可以 把Cookie转成Base64String 或者 Hash一下 但Hash后怎么解 还不清楚中
[解决办法]
加密就是障眼法。
随便把用
点函数换换字符的表现方式
加密
public static string ToBase64(string psClearString)
{
byte[] data;
data = System.Text.ASCIIEncoding.ASCII.GetBytes(psClearString);
return Convert.ToBase64String(data);
}
解密
public static string FromBase64(string ps64String)
{
byte[] data;
data = Convert.FromBase64String(ps64String);
return System.Text.ASCIIEncoding.ASCII.GetString(data);
}
还有的直接用明码，但是加个识别。
把用户名的ID跟密码还有一个字符串（自己设置）合起来，然后MD5加密起来。
验证的时候自己在加密一个，对比一下。
[解决办法]
/// <summary>
/// DES加密
/// </summary>
/// <param name= "pToEncrypt "> 要加密的字符串 </param>
/// <param name= "sKey "> 密钥 </param>
/// <returns> 密文 </returns>
public string Encrypt(string pToEncrypt, string sKey)
{
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
//把字符串放到byte数组中
//原来使用的UTF8编码，我改成Unicode编码了，不行
byte[] inputByteArray = Encoding.Default.GetBytes(pToEncrypt);
//byte[] inputByteArray=Encoding.Unicode.GetBytes(pToEncrypt);
//建立加密对象的密钥和偏移量
//原文使用ASCIIEncoding.ASCII方法的GetBytes方法
//使得输入密码必须输入英文文本
des.Key = ASCIIEncoding.ASCII.GetBytes(sKey);
des.IV = ASCIIEncoding.ASCII.GetBytes(sKey);
MemoryStream ms = new MemoryStream();
CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(), CryptoStreamMode.Write);
//Write the byte array into the crypto stream
//(It will end up in the memory stream)
cs.Write(inputByteArray, 0, inputByteArray.Length);
cs.FlushFinalBlock();
//Get the data back from the memory stream, and into a string
StringBuilder ret = new StringBuilder();
foreach (byte b in ms.ToArray())
{
//Format as hex
ret.AppendFormat( "{0:X2} ", b);
}
ret.ToString();
return ret.ToString();
}
/// <summary> DES解密 </summary>
/// <param name= "pToDecrypt "> 要还原的字符串 </param>
/// <param name= "sKey "> 密钥 </param>
/// <returns> 原文 </returns>
public string Decrypt(string pToDecrypt, string sKey)
{
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
//Put the input string into the byte array
byte[] inputByteArray = new byte[pToDecrypt.Length / 2];
for (int x = 0; x < pToDecrypt.Length / 2; x++)
{
int i = (Convert.ToInt32(pToDecrypt.Substring(x * 2, 2), 16));
inputByteArray[x] = (byte)i;
}
//建立加密对象的密钥和偏移量，此值重要，不能修改
des.Key = ASCIIEncoding.ASCII.GetBytes(sKey);
des.IV = ASCIIEncoding.ASCII.GetBytes(sKey);
MemoryStream ms = new MemoryStream();
CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Write);
//Flush the data through the crypto stream into the memory stream
cs.Write(inputByteArray, 0, inputByteArray.Length);
cs.FlushFinalBlock();
//Get the decrypted data back from the memory stream
//建立StringBuild对象，CreateDecrypt使用的是流对象，必须把解密后的文本变成流对象
StringBuilder ret = new StringBuilder();
return System.Text.Encoding.Default.GetString(ms.ToArray());
}
[解决办法]
http://www.mltang.com/article/cc41e5a4-4abb-46f8-b9b9-4a9541865609.html
[解决办法]
不用加密，明文发就是了
[解决办法]
可以用 System.Security.Cryptography下面的类进行加密
//加密密码
public static string EncryptPassword(string password)
{
byte [] pass = ConvertToByteArray(password);
SHA1 s = new SHA1CryptoServiceProvider();
string cryptPassword = BitConverter.ToString(s.ComputeHash(pass));
return cryptPassword;
}
private static byte [] ConvertToByteArray(string password)
{
char [] pass = password.ToCharArray();
byte [] covPass = new byte[pass.Length - 1];
for(int i = 0; i < covPass.Length - 1; i ++)
{
covPass[i] = Convert.ToByte(pass[i]);
}
return covPass;
}
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jf
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没试过。JF
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jf
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jf
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用系统的Cryptography应该就够了，加密通信
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呵呵
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m
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学习 JF
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n
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jf
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jf
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mark
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随便换一个二进制保存就可以了
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mark
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jf
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JF
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接分
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jf
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JF
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网上的加密算法很多的，对称 接分
public class StringSecurity
{
private static string KEY_64 = "MACTICHU ";
private static string IV_64 = "MACTICHU "; //注意了，是8个字符，64位
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);
}
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();
}
}
[解决办法]
顶!!!
[解决办法]
为什么要加密
接分
关键要放分
