如何对asp.net代码加密

[yangjinhui]

如何对asp.net代码加密

[qiume]

使用混淆器，网上很多的......

[马老虎]

[Quote=引用 1 楼 qiume 的回复:]
使用混淆器，网上很多的......
[/Quote]
还有加密狗

[Jing3_zhang]

加密和解密 有很多种 像md5就是一种很普遍的加密方式。在ASP种想要加密和解密 需在 运行里面输入代码即可。同样的解密也是在里面输入一行代码。

[飞虹]

maxtocode,可以试试这个！

[lifang0803]

#region ========加密========

/// <summary>
/// 加密
/// </summary>
/// <param name="Text"></param>
/// <returns></returns>
public static string Encrypt(string Text)
{
return Encrypt(Text, "HarryJames");
}
/// <summary>
/// 加密数据
/// </summary>
/// <param name="Text"></param>
/// <param name="sKey"></param>
/// <returns></returns>
public static string Encrypt(string Text, string sKey)
{
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
byte[] inputByteArray;
inputByteArray = Encoding.Default.GetBytes(Text);
des.Key = ASCIIEncoding.ASCII.GetBytes(System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5").Substring(0, 8));
des.IV = ASCIIEncoding.ASCII.GetBytes(System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5").Substring(0, 8));
System.IO.MemoryStream ms = new System.IO.MemoryStream();
CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(), CryptoStreamMode.Write);
cs.Write(inputByteArray, 0, inputByteArray.Length);
cs.FlushFinalBlock();
StringBuilder ret = new StringBuilder();
foreach (byte b in ms.ToArray())
{
ret.AppendFormat("{0:X2}", b);
}
return ret.ToString();
}

#endregion

#region ========解密========


/// <summary>
/// 解密
/// </summary>
/// <param name="Text"></param>
/// <returns></returns>
public static string Decrypt(string Text)
{
return Decrypt(Text, "HarryJames");
}
/// <summary>
/// 解密数据
/// </summary>
/// <param name="Text"></param>
/// <param name="sKey"></param>
/// <returns></returns>
public static string Decrypt(string Text, string sKey)
{
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
int len;
len = Text.Length / 2;
byte[] inputByteArray = new byte[len];
int x, i;
for (x = 0; x < len; x++)
{
i = Convert.ToInt32(Text.Substring(x * 2, 2), 16);
inputByteArray[x] = (byte)i;
}
des.Key = ASCIIEncoding.ASCII.GetBytes(System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5").Substring(0, 8));
des.IV = ASCIIEncoding.ASCII.GetBytes(System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5").Substring(0, 8));
System.IO.MemoryStream ms = new System.IO.MemoryStream();
CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Write);
cs.Write(inputByteArray, 0, inputByteArray.Length);
cs.FlushFinalBlock();
return Encoding.Default.GetString(ms.ToArray());
}

#endregion
}

public class DESEncryptEx
{
#region ========加密========
/// <summary>
/// 加密字符串
/// </summary>
/// <param name="pToEncrypt">待加密字符串</param>
/// <returns></returns>
public static string Encrypt(string pToEncrypt)
{
byte[] desKey = new byte[] { 0x16, 0x29, 0x98, 0x15, 0x07, 0x08, 0x05, 0x03 };
byte[] desIV = new byte[] { 0x16, 0x09, 0x14, 0x15, 0x07, 0x08, 0x05, 0x03 };

DESCryptoServiceProvider des = new DESCryptoServiceProvider();
try
{
//把字符串放到byte数组中
//原来使用的UTF8编码，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 = desKey; // ASCIIEncoding.ASCII.GetBytes(sKey);
des.IV = desIV; //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();
}
catch
{
return pToEncrypt;
}
finally
{
des = null;
}
}
#endregion

#region ========解密========
/// <summary>
/// 解密字符串
/// </summary>
/// <param name="pToDecrypt">待解密字符串</param>
/// <returns></returns>
public static string Decrypt(string pToDecrypt)
{
byte[] desKey = new byte[] { 0x16, 0x29, 0x98, 0x15, 0x07, 0x08, 0x05, 0x03 };
byte[] desIV = new byte[] { 0x16, 0x09, 0x14, 0x15, 0x07, 0x08, 0x05, 0x03 };

DESCryptoServiceProvider des = new DESCryptoServiceProvider();
try
{
//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 = desKey; //ASCIIEncoding.ASCII.GetBytes(sKey);
des.IV = desIV; //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());
}
catch
{
return pToDecrypt;
}
finally
{
des = null;
}
}

#endregion
}

[ljz_761121]

#region ========加密========

/// <summary>
/// 加密
/// </summary>
/// <param name="Text"></param>
/// <returns></returns>
public static string Encrypt(string Text)
{
return Encrypt(Text, "HarryJames");
}
/// <summary>
/// 加密数据
/// </summary>
/// <param name="Text"></param>
/// <param name="sKey"></param>
/// <returns></returns>
public static string Encrypt(string Text, string sKey)
{
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
byte[] inputByteArray;
inputByteArray = Encoding.Default.GetBytes(Text);
des.Key = ASCIIEncoding.ASCII.GetBytes(System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5").Substring(0, 8));
des.IV = ASCIIEncoding.ASCII.GetBytes(System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5").Substring(0, 8));
System.IO.MemoryStream ms = new System.IO.MemoryStream();
CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(), CryptoStreamMode.Write);
cs.Write(inputByteArray, 0, inputByteArray.Length);
cs.FlushFinalBlock();
StringBuilder ret = new StringBuilder();
foreach (byte b in ms.ToArray())
{
ret.AppendFormat("{0:X2}", b);
}
return ret.ToString();
}

#endregion

#region ========解密========


/// <summary>
/// 解密
/// </summary>
/// <param name="Text"></param>
/// <returns></returns>
public static string Decrypt(string Text)
{
return Decrypt(Text, "HarryJames");
}
/// <summary>
/// 解密数据
/// </summary>
/// <param name="Text"></param>
/// <param name="sKey"></param>
/// <returns></returns>
public static string Decrypt(string Text, string sKey)
{
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
int len;
len = Text.Length / 2;
byte[] inputByteArray = new byte[len];
int x, i;
for (x = 0; x < len; x++)
{
i = Convert.ToInt32(Text.Substring(x * 2, 2), 16);
inputByteArray[x] = (byte)i;
}
des.Key = ASCIIEncoding.ASCII.GetBytes(System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5").Substring(0, 8));
des.IV = ASCIIEncoding.ASCII.GetBytes(System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5").Substring(0, 8));
System.IO.MemoryStream ms = new System.IO.MemoryStream();
CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Write);
cs.Write(inputByteArray, 0, inputByteArray.Length);
cs.FlushFinalBlock();
return Encoding.Default.GetString(ms.ToArray());
}

#endregion
}

public class DESEncryptEx
{
#region ========加密========
/// <summary>
/// 加密字符串
/// </summary>
/// <param name="pToEncrypt">待加密字符串</param>
/// <returns></returns>
public static string Encrypt(string pToEncrypt)
{
byte[] desKey = new byte[] { 0x16, 0x29, 0x98, 0x15, 0x07, 0x08, 0x05, 0x03 };
byte[] desIV = new byte[] { 0x16, 0x09, 0x14, 0x15, 0x07, 0x08, 0x05, 0x03 };

DESCryptoServiceProvider des = new DESCryptoServiceProvider();
try
{
//把字符串放到byte数组中
//原来使用的UTF8编码，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 = desKey; // ASCIIEncoding.ASCII.GetBytes(sKey);
des.IV = desIV; //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();
}
catch
{
return pToEncrypt;
}
finally
{
des = null;
}
}
#endregion

#region ========解密========
/// <summary>
/// 解密字符串
/// </summary>
/// <param name="pToDecrypt">待解密字符串</param>
/// <returns></returns>
public static string Decrypt(string pToDecrypt)
{
byte[] desKey = new byte[] { 0x16, 0x29, 0x98, 0x15, 0x07, 0x08, 0x05, 0x03 };
byte[] desIV = new byte[] { 0x16, 0x09, 0x14, 0x15, 0x07, 0x08, 0x05, 0x03 };

DESCryptoServiceProvider des = new DESCryptoServiceProvider();
try
{
//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 = desKey; //ASCIIEncoding.ASCII.GetBytes(sKey);
des.IV = desIV; //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());
}
catch
{
return pToDecrypt;
}
finally
{
des = null;
}
}

#endregion

[jieyan1227]

day day up

[huangmin3956]

up...

[it521]

建议楼主看下微软的企业库 Application Block 有的 安全方面

[it521]

Enterprise Library中包含的应用程序块
Configuration
Data Access
Cryptography
Security
Logging & Instrumentation
Exception Handling
Caching
其中Cryptography Application Block简化了开发人员为敏感信息进行加解密工作

[Sxiaobing]

现在网上很多加密软件呀! 想在很多企业做开发都不会做加密，都时使用加密软件，比如密狗等等。

[zhang135956731]

加密再厉害，有的代码查看器还是会查看的……中国的解密能力可是很强的啊，什么都能破解……