昨天老师让我们用MFC写一个凯撒加密，花了一会时间完成后，又花了半天自己写了个移位加密算法，是用SDK写的。
算法部分请教了自己学ACM的同学，这里先谢谢他了。
移位算法描述：
变位加密不隐藏明文的字符，即明文的字母保持相同，但其顺序被打乱重新排列成另一种不同的格式。
1）简单变位加密。预先约定好一组数字表示密钥，将文字依次写在密钥下，再按数字次序重新组织文字实现加密，也有人喜欢将明文逆序输出作为密文。例如
密钥：5 2 4 1 6 3 (密文排列次序)
明文：信息安全技术
密文：技息全信术安
先用c++描述加密解密算法：
#include <stdio.h>
#include <string.h>
#include <iostream>
using namespace std;
char map[1001], ans[1001], fin[1001], temp[1001];
int key[1001];
//map = Proclaim 这里是写SDK的时候把名字变过去了，对照一下
//ans = Key
//fin = Cryptograph
//lenk= Key_Length
//lenm= Proclaim_Length
//key = Key_Each
int main()
{
cin >> map;
cin >> ans;
int lenk = strlen(ans);
for(int i = 0; i < lenk; i++)
key[i] = ans[i] - '0';
int lenm = strlen(map);
for(int i = lenm; i < 1001; i++)
map[i] = '0';
//memset(fin, '0', sizeof(fin));解密时候加上
for(int i = 0; i < lenm; ) //这里注意一下，最后一个条件是空的!!!!!!
{
int j = 0;
for(j = 0; j < lenk; j++)
temp[j] = map[i++];
for(j = 0; j < lenk; j++)
i--;
for(j = 0; j < lenk; j++)
fin[i++] = temp[key[j]-1];
//fin[key[j]-1+i] = temp[j];解密算法
}
puts(fin);
return 0;
} /*------------------------------------------------------------
变位加密解密算法
By MiiBotree
------------------------------------------------------------*/
#include <windows.h>
#include <string.h>
#define IDC_BUTTON1 1
#define IDC_BUTTON2 2
#define IDC_EDIT1 3
#define IDC_EDIT2 4
#define IDC_EDIT3 5
#define IDC_EDIT4 6
LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM) ;
int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
PSTR szCmdLine, int iCmdShow)
{
static TCHAR szAppName[] = TEXT ("Caesar") ;
HWND hwnd ;
MSG msg ;
WNDCLASS wndclass ;
wndclass.style = CS_HREDRAW | CS_VREDRAW ;
wndclass.lpfnWndProc = WndProc ;
wndclass.cbClsExtra = 0 ;
wndclass.cbWndExtra = 0 ;
wndclass.hInstance = hInstance ;
wndclass.hIcon = LoadIcon (NULL, IDI_APPLICATION) ;
wndclass.hCursor = LoadCursor (NULL, IDC_ARROW) ;
wndclass.hbrBackground = (HBRUSH) GetStockObject (WHITE_BRUSH) ;
wndclass.lpszMenuName = NULL ;
wndclass.lpszClassName = szAppName ;
if (!RegisterClass (&wndclass))
{
MessageBox (NULL, TEXT ("This program requires Windows NT!"),
szAppName, MB_ICONERROR) ;
return 0 ;
}
hwnd = CreateWindow (szAppName,
TEXT ("变位算法By MiiBotree"),
WS_OVERLAPPED | WS_CAPTION | WS_SYSMENU |
WS_THICKFRAME | WS_MINIMIZEBOX,
CW_USEDEFAULT,
CW_USEDEFAULT,
700,
550,
NULL,
NULL,
hInstance,
NULL) ;
ShowWindow (hwnd, iCmdShow) ;
UpdateWindow (hwnd) ;
while (GetMessage (&msg, NULL, 0, 0))
{
TranslateMessage (&msg) ;
DispatchMessage (&msg) ;
}
return msg.wParam ;
}
LRESULT CALLBACK WndProc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
HDC hdc ;
PAINTSTRUCT ps ;
RECT rect ;
HWND hwndButton;
HWND hwndEdit;
static int cxChar, cyChar;
switch (message)
{
case WM_CREATE:
cxChar = LOWORD (GetDialogBaseUnits ()) ;
cyChar = HIWORD (GetDialogBaseUnits ()) ;
hwndButton = CreateWindow ( TEXT("button"),
TEXT("加密"),
WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON,
cxChar + 420, cyChar * (1 + 2 * 1)+100,
10 * cxChar, 7 * cyChar / 4,
hwnd, (HMENU) IDC_BUTTON1,
((LPCREATESTRUCT) lParam)->hInstance, NULL) ;
hwndButton = CreateWindow ( TEXT("button"),
TEXT("解密"),
WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON,
cxChar + 420 , cyChar * (1 + 2 * 1)+200,
10 * cxChar, 7 * cyChar / 4,
hwnd, (HMENU) IDC_BUTTON2,
((LPCREATESTRUCT) lParam)->hInstance, NULL) ;
hwndEdit = CreateWindow (TEXT("edit"),NULL,
WS_CHILD | WS_VISIBLE |
WS_BORDER|ES_LEFT | ES_MULTILINE |
ES_AUTOVSCROLL,
cxChar+200 , cyChar * (1 + 2 * 1)+40,
20 * cxChar, (7 * cyChar / 4)*2,
hwnd, (HMENU)IDC_EDIT1,
((LPCREATESTRUCT) lParam)->hInstance, NULL) ;
hwndEdit = CreateWindow (TEXT("edit"),NULL,
WS_CHILD | WS_VISIBLE |
WS_BORDER|ES_LEFT | ES_MULTILINE |
ES_AUTOVSCROLL,
cxChar+200 , cyChar * (1 + 2 * 1)+140,
20 * cxChar, (7 * cyChar / 4)*2,
hwnd, (HMENU)IDC_EDIT2,
((LPCREATESTRUCT) lParam)->hInstance, NULL) ;
hwndEdit = CreateWindow (TEXT("edit"),NULL,
WS_CHILD | WS_VISIBLE |
WS_BORDER|ES_LEFT | ES_MULTILINE |
ES_AUTOVSCROLL,
cxChar+200 , cyChar * (1 + 2 * 1)+240,
20 * cxChar, (7 * cyChar / 4)*2,
hwnd, (HMENU)IDC_EDIT3,
((LPCREATESTRUCT) lParam)->hInstance, NULL) ;
hwndEdit = CreateWindow (TEXT("edit"),NULL,
WS_CHILD | WS_VISIBLE |
WS_BORDER|ES_LEFT | ES_MULTILINE |
ES_AUTOVSCROLL,
cxChar+200 , cyChar * (1 + 2 * 1)+340,
20 * cxChar, (7 * cyChar / 4)*2,
hwnd, (HMENU)IDC_EDIT4,
((LPCREATESTRUCT) lParam)->hInstance, NULL) ;
return 0 ;
case WM_PAINT:
LOGFONT a;
a.lfHeight=25;
a.lfWidth=10;
a.lfEscapement=0;
a.lfWeight=700;
a.lfItalic=FALSE;
a.lfUnderline=FALSE;
a.lfStrikeOut=FALSE;
a.lfCharSet =GB2312_CHARSET;
hdc = BeginPaint (hwnd, &ps);
GetClientRect (hwnd, &rect);
SelectObject(hdc,CreateFontIndirect(&a));
SetTextColor(hdc,(255,255,255));
TextOut(hdc, 100, 100, L"明文", wcslen(L"明文"));
TextOut(hdc, 100, 200, L"密钥", wcslen(L"密钥"));
TextOut(hdc, 100, 300, L"密文", wcslen(L"密文") );
TextOut(hdc, 100, 400, L"明文解", wcslen(L"明文解") );
TextOut(hdc, 500, 450, L"MiiBotree制作", wcslen(L"MiiBotree制作") );
ReleaseDC(hwnd, hdc);
EndPaint (hwnd, &ps);
return 0;
case WM_COMMAND:
if (LOWORD (wParam == IDC_BUTTON1))
{
TCHAR Proclaim[256];//明文
TCHAR Cryptograph[256];//密文
TCHAR Key[256];//密钥
TCHAR temp[256];
int Key_Length = 0, Proclaim_Length;
//密钥的长度， 明文的长度
int Key_Each[256];
GetDlgItemText(hwnd, IDC_EDIT1, Proclaim, sizeof(Proclaim));
GetDlgItemText(hwnd, IDC_EDIT2, Key, sizeof(Key));
Key_Length = wcslen(Key);
Proclaim_Length = wcslen(Proclaim);
if (Key_Length > Proclaim_Length)//判断输入是否有错误
MessageBox(hwnd,TEXT("明文或者密钥输入有误，请重新输入"), TEXT("出错啦"), MB_OK);
if (Key_Length == 0)
MessageBox(hwnd,TEXT("明文或者密钥输入有误，请重新输入"), TEXT("出错啦"), MB_OK);
if (Proclaim_Length % Key_Length != 0)//明文补全
{
for (int i = Proclaim_Length; i <= (Proclaim_Length / Key_Length + 1)*Key_Length-1; i++)
Proclaim[i] = '0';
Proclaim[(Proclaim_Length / Key_Length + 1)*Key_Length] = NULL;
}
//明文补全结束
for (int i = 0; i < Key_Length; i++)
Key_Each[i] = Key[i] - '0';
for(int i = 0; i < Proclaim_Length;)
{
int j = 0;
for(j = 0; j < Key_Length; j++)
temp[j] = Proclaim[i++];
for(j = 0; j < Key_Length; j++)
i--;
for(j = 0; j < Key_Length; j++)
Cryptograph[i++] = temp[Key_Each[j]-1];
}
if (Proclaim_Length % Key_Length != 0)
Cryptograph[(Proclaim_Length / Key_Length + 1)*Key_Length] = NULL;
else
Cryptograph[Proclaim_Length]=NULL;
SetDlgItemText(hwnd,IDC_EDIT3,Cryptograph);
}
if (LOWORD (wParam == 2))
{
TCHAR Cryptograph[256];//密文
TCHAR Key[256];//密钥
TCHAR ReProclaim[256];//还原明文
TCHAR temp[256];
int Key_Length, Cryptograph_Length;
//密钥的长度， 密文的长度
int Key_Each[256];
GetDlgItemText(hwnd, IDC_EDIT3,Cryptograph, sizeof(Cryptograph));
GetDlgItemText(hwnd, IDC_EDIT2, Key, sizeof(Key));
Key_Length = wcslen(Key);
Cryptograph_Length = wcslen(Cryptograph);
for (int i = 0; i < Key_Length; i++)
Key_Each[i] = Key[i] - '0';
memset(ReProclaim, '0', sizeof(ReProclaim));
for(int i = 0; i < Cryptograph_Length; )
{
int j = 0;
for(j = 0; j < Key_Length; j++)
temp[j] = Cryptograph[i++];
for(j = 0; j < Key_Length; j++)
i--;
for(j = 0; j < Key_Length; j++)
ReProclaim[Key_Each[j]-1+i] = temp[j];
for(j = 0; j < Key_Length; j++)
i++;
}
ReProclaim[Cryptograph_Length]=NULL;
SetDlgItemText(hwnd,IDC_EDIT4,ReProclaim);
}
return 0;
case WM_DESTROY:
PostQuitMessage (0) ;
return 0 ;
}
return DefWindowProc (hwnd, message, wParam, lParam) ;
}最后发张效果图
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