调用C ++ dll函数从C＃

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问题描述

这是我的第三个线程关于一个blowfish问题在C＃。尽管事实我不能在我的应用程序中实现blowfish，我决定使用它作为外部C ++ DLL。
请注意，我试过Blowfish.NET和任何其他，问题是我正在将代码从C ++转换为C＃和C＃代码必须做的完全相同的C ++代码。

This is my 3rd thread concerning a blowfish problem in C#.Despite the fact I cannot have blowfish implemented in my application, I decided to use it as an external C++ dll.Please note I've tried Blowfish.NET and any other, the problem is that I'm translating code from C++ to C# and the C# code must do exactly the same as the C++ code does.

到目前为止：

注意导出的函数在代码末尾

C＃代码（定义）

    [DllImport("TestDLL.dll", EntryPoint = "Initkey" ,ExactSpelling = true , CallingConvention = CallingConvention.Cdecl)]
    public static unsafe extern void Initkey(byte[] key);

    [DllImport("TestDLL.dll", EntryPoint = "encode", ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)]
    public static unsafe extern void encode(UInt32 *stream);

C＃代码（函数调用）

C# code(function calling)

-Initialize blowfish key

UInt32[] keyarray = new UInt32[2];
//some code
Extern.Initkey(Misc.ConvertFromUInt32Array(keyarray));
//
//
//Helper function used to convert a UInt32 array into Byte array.
public static byte[] ConvertFromUInt32Array(UInt32[] array)
{
    List<byte> results = new List<byte>();
    foreach (UInt32 value in array)
    {
        byte[] converted = BitConverter.GetBytes(value);
        results.AddRange(converted);
    }
    return results.ToArray();
}

- 编码数据。

            UInt32[] keyarray2 = new UInt32[2];
            //some code
            unsafe
            {
                fixed (UInt32* LPBYTE = keyarray2)
                {
                    Extern.encode(LPBYTE);
                }
            }

在Encode函数覆盖keyarray2后，在C ++代码中的值通过解密它们以确保一切都是好的。

After keyarray2 is overwritten by the Encode function, I check the values in the C++ code by decrypting them to make sure everything is alright.

好吧，这不是好的。这是我的问题，这就是为什么我要求你的帮助。

Well, It's not alright.That's my problem, That's why I am asking you for your help.

当我解密它们时，值是不同的，但是如果我在C ++源代码中加密和解密它们，它们是相等的.C ++代码是完全相同的，除了没有DLL，因为代码是在C ++。

The values are different when I decrypt them,but If I encrypt them and decrypt them in the C++ source, they are equal.The C++ code is absolutely the same,except that there's no DLL since the code is in C++.

这可能是因为Initialize函数。我读了几个月前，C ++中的数组作为指针传递。我不相信，但即使如此 - 可能是这个问题吗？

Could that be, because of the Initialize function.I had read a couple of months ago that arrays in C++ are passed as Pointers.I don't believe it,but even so - could that be the problem?

我找不到一个线索。我已经浪费了我的生活与C＃中的河豚。至少这个解决方案应该工作，但它不 - 为什么？

I can't find a clue. I have wasted my life with that blowfish in C#. At least that solution should work, but it doesn't - Why?

Decrypt

调用C ++ dll函数从C＃

问题描述

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