windowsSDK移位加密算法实现
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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; } 然后是自己的SDK实现/*------------------------------------------------------------ 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;elseCryptograph[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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