我在C＃，VB.net和VC ++（VS 2008）中有加密解密代码，任何人都可以解密加密文件。
现在的要求是，我必须在VC ++ 6.0中使用VC ++（VS 2008）静态lib文件。
或建议任何其他替代方法（没有dll）
namespace RijndaelEncDec
{
void Rijndael::LN_EncryptFile(String^ fileSource, String^ fileDestination, String^ password)
{
// Declare the streams used
// to encrypt to an in memory
// array of bytes.
CryptoStream^ cryptoStream;
FileStream^ fsIn;
FileStream^ fsOut ;
// Declare the RijndaelManaged object
// used to encrypt the data.
RijndaelManaged^ RijndaelCipher;
try
{
fsIn=gcnew FileStream(fileSource, FileMode::Open, FileAccess::Read);
fsOut = gcnew FileStream(fileDestination, FileMode::Create, FileAccess::Write);
array<Byte>^ salt = gcnew array<Byte>(13){ 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0xF1, 0xF0, 0xEE, 0x21, 0x22, 0x45 };
Rfc2898DeriveBytes ^secretKey =gcnew Rfc2898DeriveBytes(password,salt);
RijndaelCipher = gcnew RijndaelManaged();
RijndaelCipher->Padding = PaddingMode::PKCS7;
RijndaelCipher->Mode=CipherMode::CBC;
RijndaelCipher->BlockSize=128;
RijndaelCipher->Key = secretKey->GetBytes(32);
RijndaelCipher->IV = secretKey->GetBytes(16);
ICryptoTransform^ encryptor = RijndaelCipher->CreateEncryptor();
cryptoStream = gcnew CryptoStream(fsOut, encryptor, CryptoStreamMode::Write);
int ByteData;
while ((ByteData=fsIn->ReadByte()) != -1)
{
cryptoStream->WriteByte(ByteData);
}
cryptoStream->FlushFinalBlock();
}
catch (FileNotFoundException^ ex)
{
if ((ex->FileName->CompareTo(fileSource) == 0) && (GlobalVariableClass::logPermission == true))
{
StreamWriter^ writer = gcnew StreamWriter(GlobalVariableClass::logFileLocation);
writer->WriteLine(ex->Message);
writer->Close();
}
if ((ex->FileName->CompareTo(fileDestination) == 0) && GlobalVariableClass::logPermission == true)
{
StreamWriter^ writer = gcnew StreamWriter(GlobalVariableClass::logFileLocation);
writer->WriteLine(ex->Message + " i.e. Input file for Encryption");
writer->Close();
}
}
catch (Exception^ ex)
{
if(GlobalVariableClass::logPermission==true)
{
StreamWriter^ writer = gcnew StreamWriter(GlobalVariableClass::logFileLocation);
writer->WriteLine(ex->Message + " During Encrypting File");
writer->Close();
}
}
finally
{
// Close the streams.
if (cryptoStream)
cryptoStream->Close();
if(fsIn)
fsIn->Close();
if(fsOut)
fsOut->Close();
// Clear the RijndaelManaged object.
if (RijndaelCipher)
RijndaelCipher->Clear();
}
// Return the encrypted bytes from the memory stream.
return ;//msEncrypt->ToArray();
}
void Rijndael::DecryptFile(String^ fileSource, String^ fileDestination, String^ password)
{
array<Byte>^ salt = gcnew array<Byte>(13) { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0xF1, 0xF0, 0xEE, 0x21, 0x22, 0x45 };
Rfc2898DeriveBytes ^secretKey =gcnew Rfc2898DeriveBytes(password,salt);
CryptoStream^ csDecrypt;
StreamReader^ srDecrypt;
FileStream^ fsIn;
FileStream^ fsOut;
// Declare the RijndaelManaged object
// used to decrypt the data.
RijndaelManaged^ RijndaelCipher;
try
{
fsIn = gcnew FileStream(fileSource, FileMode::Open, FileAccess::Read);
fsOut = gcnew FileStream(fileDestination, FileMode::Create, FileAccess::Write);
RijndaelCipher = gcnew RijndaelManaged();
RijndaelCipher->Padding = PaddingMode::PKCS7;
RijndaelCipher->Key = secretKey->GetBytes(32);
RijndaelCipher->IV = secretKey->GetBytes(16);
// Create a decrytor to perform the stream transform.
ICryptoTransform^ decryptor = RijndaelCipher->CreateDecryptor();
// Create the streams used for decryption.
csDecrypt = gcnew CryptoStream(fsOut, decryptor, CryptoStreamMode::Write);
int ByteData;
while ((ByteData=fsIn->ReadByte()) != -1)
{
csDecrypt->WriteByte(ByteData);
}
}
catch (FileNotFoundException^ ex)
{
if ((ex->FileName->CompareTo(fileSource) == 0) && (GlobalVariableClass::logPermission == true))
{
StreamWriter^ writer = gcnew StreamWriter(GlobalVariableClass::logFileLocation);
writer->WriteLine(ex->Message + " i.e. Input file for decryption");
writer->Close();
}
if ((ex->FileName->CompareTo(fileDestination) == 0) && GlobalVariableClass::logPermission == true)
{
StreamWriter^ writer = gcnew StreamWriter(GlobalVariableClass::logFileLocation);
writer->WriteLine(ex->Message + " i.e. Output file while decryption");
writer->Close();
}
}
catch (Exception^ ex)
{
if (GlobalVariableClass::logPermission == true)
{
StreamWriter^ writer = gcnew StreamWriter(GlobalVariableClass::logFileLocation);
writer->WriteLine(ex->Message + " During Decrypting File");
writer->Close();
}
}
finally
{
// Clean things up.
// Close the streams.
if (srDecrypt)
srDecrypt->Close();
if (csDecrypt)
csDecrypt->Close();
fsIn->Close();
fsOut->Close();
// Clear the RijndaelManaged object.
if (RijndaelCipher)
RijndaelCipher->Clear();
}
return ;
}
String^ Rijndael:: ReadEncryptFileToBuffer(String^ fileSource,[System::Runtime::InteropServices::OutAttribute] String ^% buffer,String^ password)
{
FileStream^ fsIn;
MemoryStream^ memoryStream;
CryptoStream^ cryptoStream;
StreamReader^ fileReader,^streamReader;
RijndaelManaged^ RijndaelCipher;
String^ decryptText;
// First we are going to open the file streams
try
{
RijndaelCipher = gcnew RijndaelManaged();
RijndaelCipher->Mode = CipherMode::CBC;
RijndaelCipher->KeySize = 256;
RijndaelCipher->BlockSize = 128;
RijndaelCipher->Padding = PaddingMode::PKCS7;
fsIn = gcnew FileStream(fileSource, FileMode::Open, FileAccess::Read);
fileReader = gcnew StreamReader(fsIn,System::Text::Encoding::Default);
String^ cipherText = fileReader->ReadToEnd();
array<Byte>^ cipherByte = System::Text::Encoding::Default->GetBytes(cipherText);
array<Byte>^ salt = gcnew array<Byte>(13) { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0xF1, 0xF0, 0xEE, 0x21, 0x22, 0x45 };
Rfc2898DeriveBytes^ secretKey = gcnew Rfc2898DeriveBytes(password, salt);
ICryptoTransform^ Decryptor = RijndaelCipher->CreateDecryptor(secretKey->GetBytes(32), secretKey->GetBytes(16));
memoryStream = gcnew MemoryStream(cipherByte);
cryptoStream = gcnew CryptoStream(memoryStream, Decryptor, CryptoStreamMode::Read);
streamReader = gcnew StreamReader(cryptoStream);
decryptText = streamReader->ReadToEnd();
buffer = decryptText;
Console::WriteLine(decryptText);
}
catch (FileNotFoundException^ ex)
{
if (ex->FileName->CompareTo(fileSource) == 0 && GlobalVariableClass::logPermission == true)
{
StreamWriter^ writer = gcnew StreamWriter(GlobalVariableClass::logFileLocation);
writer->WriteLine(ex->Message + " i.e. Input file for decryption Buffer");
writer->Close();
}
}
catch (Exception^ ex)
{
if (GlobalVariableClass::logPermission == true)
{
StreamWriter^ writer = gcnew StreamWriter(GlobalVariableClass::logFileLocation);
writer->WriteLine(ex->Message + "i.e. During Reading Encrypting File to Decrypted Buffer");
writer->Close();
}
}
finally
{
if(fsIn)
fsIn->Close();
if(memoryStream)
memoryStream->Close();
if(cryptoStream)
cryptoStream->Close();
if(streamReader)
streamReader->Close();
}
return decryptText;
}
void Rijndael::WriteEncFileFromDecBuffer(String^ buffer, String^ fileDestination, String^ password)
{
FileStream^ fsOut;
CryptoStream^ cryptoStream;
StreamReader^ streamReader;
try
{
RijndaelManaged^ RijndaelCipher = gcnew RijndaelManaged();
RijndaelCipher->Mode = CipherMode::CBC;
RijndaelCipher->KeySize = 256;
RijndaelCipher->BlockSize = 128;
RijndaelCipher->Padding = PaddingMode::PKCS7;
FileStream^ fsOut = gcnew FileStream(fileDestination, FileMode::Create, FileAccess::Write);
array<Byte>^ salt = gcnew array<Byte>(13) { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0xF1, 0xF0, 0xEE, 0x21, 0x22, 0x45 };
array<Byte>^ plainText = System::Text::Encoding::Default->GetBytes(buffer);
Rfc2898DeriveBytes^ secretKey = gcnew Rfc2898DeriveBytes(password, salt);
ICryptoTransform^ Encryptor = RijndaelCipher->CreateEncryptor(secretKey->GetBytes(32), secretKey->GetBytes(16));
cryptoStream = gcnew CryptoStream(fsOut, Encryptor, CryptoStreamMode::Write);
cryptoStream->Write(plainText, 0, plainText->Length);
cryptoStream->FlushFinalBlock();
cryptoStream->Close();
fsOut->Close();
}
catch(FileNotFoundException^ ex)
{
if ( GlobalVariableClass::logPermission == true)
{
StreamWriter^ writer = gcnew StreamWriter(GlobalVariableClass::logFileLocation);
writer->WriteLine(ex->Message + " i.e. Output file from Dencrypted Buffer");
writer->Close();
}
}
catch(Exception^ ex)
{
if (GlobalVariableClass::logPermission == true)
{
StreamWriter^ writer = gcnew StreamWriter(GlobalVariableClass::logFileLocation);
writer->WriteLine(ex->Message + " During Writing Encrypting File from Decrypted Buffer");
writer->Close();
}
}
finally
{
fsOut->Close();
cryptoStream->Close();
streamReader->Close();
}
}
}
答案 0 :(得分：1)
你不能这样做。 VS6在.NET存在之前就已存在，因此您需要提供可从VS6所知的技术访问的托管组件的接口。两个最简单的选择：
我不明白需要.lib文件的要求;两种明显的解决方案都不会采用这种方法如果你想要一个更好的答案，你应该更清楚为什么你“需要”.lib。问题是你有一套不可能的要求：
这3个限制证明这是不可能的;你需要在某个地方妥协。
答案 1 :(得分：0)
我猜你最好的办法是在你的一个实现中为函数编写一个C包装器，然后用它制作一个DLL。
答案 2 :(得分：0)
相反，我建议您将VC ++ 6.0代码升级到VC ++ 9.0（或任何包含.NetFramework支持的版本），该版本也可以在托管环境中编译您的应用程序代码。现在，您可以使用托管静态库，或者只需嵌入库托管代码，就可以根据您的要求使用所有功能。
您的要求似乎与使用静态库而不是使用DLL加密/解密代码相关，因为DLL可以在客户端进行逆向设计。
是的还有一件事你的代码是用C ++ / CLI（manged C ++）编写的，所以在VC ++ 9.0编译之前一定要确保在“CLR支持”上（通过公共属性）。 前进。