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1、安装加密狗驱动程序:下载加密狗驱动程序,安装到计算机中。
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2、导入加密桥帆狗类库:在vb点虐 程序扰橘中,导入加密狗类库,可以使用加密狗类库中的API函数。
3、调用API函数:调用加密狗类库中的API函数,实现与加密狗的缓消团交互,实现加密狗的功能。
在 VB.NET 中,防止 dnspy 通过反编译宽搜来反查代码的方法主要有以下几个方面:
1. 使用混淆工具:可以使用混淆工具对代码进行加密和混淆,增加反编译难度。比如,可以使用 ConfuserEx 等工具进行混淆。
2. 代码优化:通过合理的编码规范和结构优化,可以使代码更加难以理解和破解。例如,可以将相关功能封装成DLL或者模块,避免直接在主程序中公开代码等。
3. 加密:对于关键代码可以采用加密措施,使其在运行时才凳陆被解密并执行,从而防止篡改和破解。比如,可以使用加密算慎粗历法来保护数据库密码等敏感信息。
4. 程序签名:通过给程序添加数字签名,可以识别未经授权的修改和破解行为。在发布应用程序之前,需要对应用程序进行数字签名,以保证程序的完整性和安全性。
总之,在编写 VB.NET 程序时,需要采取多种安全措施,从多个方面增强程序的安全性和可靠性,以防止 dnspy 等工具进行反编译和破解。
第一个问号填 length
第二个问号填 c
第三个问号填 txtcode.text
我觉冲顷得你的并不是RSA加密解盯胡密算法。
在点虐 的有一个System.Security.Cryptography的命名空间,里面有一RSACryptoServiceProvider的类用来对byte进行RSA加密解密。
具体例子如下:
using System;
using System.Security.Cryptography;
using System.Text;
class RSACSPSample
{
static void Main()
{
try
{
//Create a UnicodeEncoder to convert between byte array and string.
UnicodeEncoding ByteConverter = new UnicodeEncoding();
//Create byte arrays to hold original, encrypted, and decrypted data.
byte[] dataToEncrypt = ByteConverter.GetBytes("Data to Encrypt");
byte[] encryptedData;
byte[] decryptedData;
//Create a new instance of RSACryptoServiceProvider to generate
//public and private key data.
RSACryptoServiceProvider RSA = new RSACryptoServiceProvider();
//Pass the data to ENCRYPT, the public key information
//凯判拦(using RSACryptoServiceProvider.ExportParameters(false),
//and a boolean flag specifying no OAEP padding.
encryptedData = RSAEncrypt(dataToEncrypt,RSA.ExportParameters(false), false);
//Pass the data to DECRYPT, the private key information
//(using RSACryptoServiceProvider.ExportParameters(true),
//and a boolean flag specifying no OAEP padding.
decryptedData = RSADecrypt(encryptedData,RSA.ExportParameters(true), false);
//Display the decrypted plaintext to the console.
Console.WriteLine("Decrypted plaintext: {0}", ByteConverter.GetString(decryptedData));
}
catch(ArgumentNullException)
{
//Catch this exception in case the encryption did
//not succeed.
Console.WriteLine("Encryption failed.");
}
}
static public byte[] RSAEncrypt(byte[] DataToEncrypt, RSAParameters RSAKeyInfo, bool DoOAEPPadding)
{
try
{
//Create a new instance of RSACryptoServiceProvider.
RSACryptoServiceProvider RSA = new RSACryptoServiceProvider();
//Import the RSA Key information. This only needs
//toinclude the public key information.
RSA.ImportParameters(RSAKeyInfo);
//Encrypt the passed byte array and specify OAEP padding.
//OAEP padding is only available on Microsoft Windows XP or
//later.
return RSA.Encrypt(DataToEncrypt, DoOAEPPadding);
}
//Catch and display a CryptographicException
//to the console.
catch(CryptographicException e)
{
Console.WriteLine(e.Message);
return null;
}
}
static public byte[] RSADecrypt(byte[] DataToDecrypt, RSAParameters RSAKeyInfo,bool DoOAEPPadding)
{
try
{
//Create a new instance of RSACryptoServiceProvider.
RSACryptoServiceProvider RSA = new RSACryptoServiceProvider();
//Import the RSA Key information. This needs
//to include the private key information.
RSA.ImportParameters(RSAKeyInfo);
//Decrypt the passed byte array and specify OAEP padding.
//OAEP padding is only available on Microsoft Windows XP or
//later.
return RSA.Decrypt(DataToDecrypt, DoOAEPPadding);
}
//Catch and display a CryptographicException
//to the console.
catch(CryptographicException e)
{
Console.WriteLine(e.ToString());
return null;
}
}
}
[Visual Basic]
Try
'Create a new RSACryptoServiceProvider object.
Dim RSA As New RSACryptoServiceProvider()
'Export the key information to an RSAParameters object.
'Pass false to export the public key information or pass
'true to export public and private key information.
Dim RSAParams As RSAParameters = RSA.ExportParameters(False)
Catch e As CryptographicException
'Catch this exception in case the encryption did
'not succeed.
Console.WriteLine(e.Message)
End Try
[C#]
try
{
//Create a new RSACryptoServiceProvider object.
RSACryptoServiceProvider RSA = new RSACryptoServiceProvider();
//Export the key information to an RSAParameters object.
//Pass false to export the public key information or pass
//true to export public and private key information.
RSAParameters RSAParams = RSA.ExportParameters(false);
}
catch(CryptographicException e)
{
//Catch this exception in case the encryption did
//not succeed.
Console.WriteLine(e.Message);
}