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qvncclientwidget.cpp
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qvncclientwidget.cpp
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#include "qvncclientwidget.h"
QVNCClientWidget::QVNCClientWidget(QWidget *parent) : QWidget(parent)
{
isFrameBufferUpdating = true;
setMouseTracking(true);
}
bool QVNCClientWidget::connectToVncServer(QString ip, QString password, int port)
{
socket.connectToHost(QHostAddress(ip), port);
if(socket.waitForConnected())
{
QByteArray response;
qDebug() << "Security Handshake";
socket.waitForReadyRead();
response = socket.readAll();
qDebug() << "Server Answer : " << response;
socket.write("RFB 003.008\n");
socket.waitForReadyRead();
response = socket.read(1); // Number of security types
if(response.isEmpty())
{
qDebug() << "Number of security types empty!";
socket.close();
socket.disconnectFromHost();
return false;
}
if(response.at(0) != 0)
{
response = socket.read(response.at(0)); // Security types
qDebug() << "Connection successful";
if(response.contains('\x01')) // None security mode supported
{
socket.write("\x01");
socket.waitForReadyRead();
response = socket.readAll();
qDebug() << "Security Result " << response;
}
else if(response.contains('\x02')) // VNC Authentication security type supported
{
socket.write("\x02");
socket.waitForReadyRead();
response = socket.read(16); // Security Challenge
qDebug() << "Security Challenge " << response;
socket.write(desHash(response, password.toLatin1()));
socket.waitForReadyRead();
response = socket.read(4); // Security handshake result
qDebug() << "Security Handshake Result " << response.toInt();
if(response.toInt() == 0) // Connection successful
{
socket.write("\x01"); // ClientInit message (non-zeo: shared, zero:exclusive)
socket.waitForReadyRead();
response = socket.read(2); // framebuffer-width in pixels
qDebug() << response;
frameBufferWidth = qMakeU16(response.at(0), response.at(1));
qDebug() << "Width: " << frameBufferWidth;
response = socket.read(2); // framebuffer-height in pixels
frameBufferHeight = qMakeU16(response.at(0), response.at(1));
qDebug() << "Height: " << frameBufferHeight;
// Pixel Format
// ***************************
response = socket.read(1);
pixelFormat.bitsPerPixel = response.at(0); // Must be 8, 16 or 32
qDebug() << "Bits per pixel: " << pixelFormat.bitsPerPixel;
response = socket.read(1);
pixelFormat.depth = response.at(0);
qDebug() << "Depth: " << pixelFormat.depth;
response = socket.read(1);
pixelFormat.bigEndianFlag = response.at(0);
qDebug() << "Big Endian: " << pixelFormat.bigEndianFlag;
response = socket.read(1);
pixelFormat.trueColorFlag = response.at(0);
qDebug() << "True Color: " << pixelFormat.trueColorFlag;
response = socket.read(2);
pixelFormat.redMax = qMakeU16(response.at(0), response.at(1));
qDebug() << "Red Max: " << pixelFormat.redMax;
response = socket.read(2);
pixelFormat.greenMax = qMakeU16(response.at(0), response.at(1));
qDebug() << "Green Max: " << pixelFormat.greenMax;
response = socket.read(2);
pixelFormat.blueMax = qMakeU16(response.at(0), response.at(1));
qDebug() << "Blue Max: " << pixelFormat.blueMax;
response = socket.read(1);
pixelFormat.redShift = response.at(0);
qDebug() << "Red Shift: " << pixelFormat.redShift;
response = socket.read(1);
pixelFormat.greenShift = response.at(0);
qDebug() << "Green Shift: " << pixelFormat.greenShift;
response = socket.read(1);
pixelFormat.blueShift = response.at(0);
qDebug() << "Blue Shift: " << pixelFormat.blueShift;
response = socket.read(3); // Padding
// ***************************
response = socket.read(4); // name-length
response = socket.read(qMakeU32(response.at(0), response.at(1), response.at(2), response.at(3))); // name-string
qDebug() << "Name : " << response;
}
else
{
qDebug() << "Connection failed! Wrong password?!?!?!";
return false;
}
}
}
else // If number of security types is zero then connection failed!
{
qDebug() << "Connection failed";
return false;
}
}
else
{
qDebug() << "Not connected to " << ip;
qDebug() << socket.errorString();
return false;
}
screen = QImage(frameBufferWidth, frameBufferHeight, QImage::Format_RGB32);
return true;
}
QVNCClientWidget::~QVNCClientWidget()
{
disconnectFromVncServer();
}
QByteArray QVNCClientWidget::desHash(QByteArray challenge, QString passStr)
{
QByteArray password(8, 0);
int i=0;
while((i<8)&&(i<passStr.length()))
{
password[i] = passStr.at(i).toLatin1();
i++;
}
// encrypt data to result with password
QByteArray result(16, 0);
deskey((unsigned char*)password.data(), EN0);
des((unsigned char*)challenge.data(),
(unsigned char*)result.data());
des((unsigned char*)challenge.data()+8,
(unsigned char*)result.data()+8);
return result;
}
void QVNCClientWidget::tryRefreshScreen()
{
QByteArray frameBufferUpdateRequest(10, 0);
frameBufferUpdateRequest[0] = 3; // message type must be 3
frameBufferUpdateRequest[1] = 0; // incremental mode is zero for now (can help optimize the VNC client)
frameBufferUpdateRequest[2] = 0;// x position
frameBufferUpdateRequest[3] = 0;// x position
frameBufferUpdateRequest[4] = 0;// y position
frameBufferUpdateRequest[5] = 0;// y position
frameBufferUpdateRequest[6] = (frameBufferWidth >> 8) & 0xFF; // width
frameBufferUpdateRequest[7] = (frameBufferWidth >> 0) & 0xFF; // width
frameBufferUpdateRequest[8] = (frameBufferHeight >> 8) & 0xFF; // height
frameBufferUpdateRequest[9] = (frameBufferHeight >> 0) & 0xFF; // height
socket.write(frameBufferUpdateRequest);
connect(&socket, SIGNAL(readyRead()), this, SLOT(onServerMessage()));
}
void QVNCClientWidget::sendFrameBufferUpdateRequest()
{
QByteArray frameBufferUpdateRequest(10, 0);
frameBufferUpdateRequest[0] = 3; // message type must be 3
frameBufferUpdateRequest[1] = 1; // incremental mode is zero for now (can help optimize the VNC client)
frameBufferUpdateRequest[2] = 0;// x position
frameBufferUpdateRequest[3] = 0;// x position
frameBufferUpdateRequest[4] = 0;// y position
frameBufferUpdateRequest[5] = 0;// y position
frameBufferUpdateRequest[6] = (frameBufferWidth >> 8) & 0xFF; // width
frameBufferUpdateRequest[7] = (frameBufferWidth >> 0) & 0xFF; // width
frameBufferUpdateRequest[8] = (frameBufferHeight >> 8) & 0xFF; // height
frameBufferUpdateRequest[9] = (frameBufferHeight >> 0) & 0xFF; // height
socket.write(frameBufferUpdateRequest);
connect(&socket, SIGNAL(readyRead()), this, SLOT(onServerMessage()));
}
void QVNCClientWidget::paintEvent(QPaintEvent *)
{
if(screen.isNull())
{
screen = QImage(width(), height(), QImage::Format_RGB32);
screen.fill(Qt::red);
}
QPainter painter;
painter.begin(this);
painter.drawImage(0, 0, screen.scaled(width(), height(), Qt::IgnoreAspectRatio, Qt::SmoothTransformation));
painter.end();
}
void QVNCClientWidget::onServerMessage()
{
disconnect(&socket, SIGNAL(readyRead()), this, SLOT(onServerMessage()));
QByteArray response;
int noOfRects;
response = socket.read(1);
switch(response.at(0))
{
// ***************************************************************************************
// ***************************** Frame Buffer Update *************************************
// ***************************************************************************************
case 0:
response = socket.read(1); // padding
response = socket.read(2); // number of rectangles
noOfRects = qMakeU16(response.at(0), response.at(1));
for(int i=0; i<noOfRects; i++)
{
qApp->processEvents();
response = socket.read(2);
int xPosition = qMakeU16(response.at(0), response.at(1));
response = socket.read(2);
int yPosition = qMakeU16(response.at(0), response.at(1));
response = socket.read(2);
int width = qMakeU16(response.at(0), response.at(1));
response = socket.read(2);
int height = qMakeU16(response.at(0), response.at(1));
response = socket.read(4);
int encodingType = qMakeU32(response.at(0), response.at(1), response.at(2), response.at(3));
QImage image(width, height, QImage::Format_RGB32);
if(encodingType == 0)
{
int noOfBytes = width * height * (pixelFormat.bitsPerPixel / 8);
QByteArray pixelsData;
do
{
qApp->processEvents();
QByteArray temp = socket.read(noOfBytes);
pixelsData.append(temp);
noOfBytes -= temp.size();
}
while(noOfBytes > 0);
uchar* img_pointer = image.bits();
int pixel_byte_cnt = 0;
for(int i=0; i<height; i++)
{
qApp->processEvents();
for(int j=0; j<width; j++)
{
// The order of the colors is BGR (not RGB)
img_pointer[0] = pixelsData.at(pixel_byte_cnt);
img_pointer[1] = pixelsData.at(pixel_byte_cnt+1);
img_pointer[2] = pixelsData.at(pixel_byte_cnt+2);
img_pointer[3] = pixelsData.at(pixel_byte_cnt+3);
pixel_byte_cnt += 4;
img_pointer += 4;
}
}
}
QPainter painter(&screen);
painter.drawImage(xPosition, yPosition, image);
painter.end();
repaint();
}
emit frameBufferUpdated();
break;
}
connect(&socket, SIGNAL(readyRead()), this, SLOT(onServerMessage()));
}
bool QVNCClientWidget::isConnectedToServer()
{
if(socket.state() == QTcpSocket::ConnectedState)
return true;
else
return false;
}
void QVNCClientWidget::disconnectFromVncServer()
{
socket.close();
socket.disconnectFromHost();
disconnect(&socket, SIGNAL(readyRead()), this, SLOT(onServerMessage()));
}
void QVNCClientWidget::keyPressEvent(QKeyEvent *event)
{
if(!isConnectedToServer())
return;
QByteArray message(8, 0);
message[0] = 4; // keyboard event
message[1] = 1; // down = 1 (press)
message[2] = message[3] = 0; // padding
quint32 key = translateRfbKey(event->key(), event->modifiers() == Qt::NoModifier ? false : true);
message[4] = (key >> 24) & 0xFF;
message[5] = (key >> 16) & 0xFF;
message[6] = (key >> 8) & 0xFF;
message[7] = (key >> 0) & 0xFF;
socket.write(message);
}
void QVNCClientWidget::keyReleaseEvent(QKeyEvent *event)
{
if(!isConnectedToServer())
return;
QByteArray message(8, 0);
message[0] = 4; // keyboard event
message[1] = 0; // down = 0 (release)
message[2] = message[3] = 0; // padding
quint32 key = translateRfbKey(event->key(), event->modifiers() == Qt::NoModifier ? false : true);
message[4] = (key >> 24) & 0xFF;
message[5] = (key >> 16) & 0xFF;
message[6] = (key >> 8) & 0xFF;
message[7] = (key >> 0) & 0xFF;
socket.write(message);
}
void QVNCClientWidget::mouseMoveEvent(QMouseEvent *event)
{
if(!isConnectedToServer())
return;
QByteArray message(6, 0);
message[0] = 5; // mouse event
switch(event->button())
{
case Qt::LeftButton:
message[1] = 1;
break;
case Qt::MiddleButton:
message[1] = 2;
break;
case Qt::RightButton:
message[1] = 4;
break;
default:
message[1] = 0;
break;
}
quint16 posX = (double(event->pos().x()) / double(width())) * double(frameBufferWidth);
quint16 posY = (double(event->pos().y()) / double(height())) * double(frameBufferHeight);
message[2] = (posX >> 8) & 0xFF;
message[3] = (posX >> 0) & 0xFF;
message[4] = (posY >> 8) & 0xFF;
message[5] = (posY >> 0) & 0xFF;
socket.write(message);
}
void QVNCClientWidget::mousePressEvent(QMouseEvent *event)
{
setFocus();
if(!isConnectedToServer())
return;
QByteArray message(6, 0);
message[0] = 5; // mouse event
switch(event->button())
{
case Qt::LeftButton:
message[1] = 1;
break;
case Qt::MiddleButton:
message[1] = 2;
break;
case Qt::RightButton:
message[1] = 4;
break;
default:
message[1] = 0;
break;
}
quint16 posX = (double(event->pos().x()) / double(width())) * double(frameBufferWidth);
quint16 posY = (double(event->pos().y()) / double(height())) * double(frameBufferHeight);
message[2] = (posX >> 8) & 0xFF;
message[3] = (posX >> 0) & 0xFF;
message[4] = (posY >> 8) & 0xFF;
message[5] = (posY >> 0) & 0xFF;
socket.write(message);
}
void QVNCClientWidget::mouseReleaseEvent(QMouseEvent *event)
{
if(!isConnectedToServer())
return;
QByteArray message(6, 0);
message[0] = 5; // mouse event
switch(event->button())
{
case Qt::LeftButton:
message[1] = 1;
break;
case Qt::MiddleButton:
message[1] = 2;
break;
case Qt::RightButton:
message[1] = 4;
break;
default:
message[1] = 0;
break;
}
quint16 posX = (double(event->pos().x()) / double(width())) * double(frameBufferWidth);
quint16 posY = (double(event->pos().y()) / double(height())) * double(frameBufferHeight);
message[2] = (posX >> 8) & 0xFF;
message[3] = (posX >> 0) & 0xFF;
message[4] = (posY >> 8) & 0xFF;
message[5] = (posY >> 0) & 0xFF;
socket.write(message);
}
quint32 QVNCClientWidget::translateRfbKey(int key, bool modifier)
{
quint32 k = 5000;
switch (key)
{
case Qt::Key_Backspace: k = XK_BackSpace; break;
case Qt::Key_Tab: k = XK_Tab;break;
case Qt::Key_Clear: k = XK_Clear; break;
case Qt::Key_Return: k = XK_Return; break;
case Qt::Key_Pause: k = XK_Pause; break;
case Qt::Key_Escape: k = XK_Escape; break;
case Qt::Key_Space: k = XK_space; break;
case Qt::Key_Delete: k = XK_Delete; break;
case Qt::Key_Period: k = XK_period; break;
//special keyboard char
case Qt::Key_Exclam: k = XK_exclam;break; //!
case Qt::Key_QuoteDbl: k = XK_quotedbl;break; //?
case Qt::Key_NumberSign: k = XK_numbersign;break; //#
case Qt::Key_Percent: k = XK_percent;break; //%
case Qt::Key_Dollar: k = XK_dollar;break; //$
case Qt::Key_Ampersand: k = XK_ampersand;break; //&
case Qt::Key_Apostrophe: k = XK_apostrophe;break;//!
case Qt::Key_ParenLeft: k = XK_parenleft;break;
case Qt::Key_ParenRight: k = XK_parenright;break;
case Qt::Key_Slash: k = XK_slash; break; ///
case Qt::Key_Asterisk: k = XK_asterisk; break; //*
case Qt::Key_Minus: k = XK_minus; break; //-
case Qt::Key_Plus: k = XK_plus; break; //+
case Qt::Key_Enter: k = XK_Return; break; //
case Qt::Key_Equal: k = XK_equal; break; //=
case Qt::Key_Colon: k = XK_colon;break;
case Qt::Key_Semicolon: k = XK_semicolon; break;
case Qt::Key_Greater: k = XK_greater; break;
case Qt::Key_Question: k = XK_question; break;
case Qt::Key_At: k = XK_at; break;
case Qt::Key_BracketLeft: k = XK_bracketleft; break;
case Qt::Key_Backslash: k = XK_backslash;break;
case Qt::Key_BracketRight: k = XK_bracketright;break;
case Qt::Key_AsciiCircum: k = XK_asciicircum;break;
case Qt::Key_Underscore: k = XK_underscore;break;
case Qt::Key_QuoteLeft: k = XK_quoteleft;break;
case Qt::Key_BraceLeft: k = XK_braceleft;break;
case Qt::Key_Bar: k = XK_bar; break;
case Qt::Key_BraceRight: k = XK_braceright;break;
case Qt::Key_AsciiTilde: k = XK_asciitilde;break;
case Qt::Key_nobreakspace: k = XK_nobreakspace;break;
case Qt::Key_exclamdown: k = XK_exclamdown;break;
case Qt::Key_cent: k = XK_cent;break;
case Qt::Key_sterling: k = XK_sterling;break;
case Qt::Key_currency: k = XK_currency;break;
case Qt::Key_yen: k = XK_yen;break;
case Qt::Key_brokenbar: k = XK_brokenbar;break;
case Qt::Key_section: k = XK_section;break;
case Qt::Key_diaeresis: k = XK_diaeresis;break;
case Qt::Key_copyright: k = XK_copyright; break;
case Qt::Key_ordfeminine: k = XK_ordfeminine; break;
case Qt::Key_guillemotleft: k = XK_guillemotleft; break;
case Qt::Key_guillemotright: k = XK_guillemotright; break;
case Qt::Key_notsign: k = XK_notsign; break;
case Qt::Key_hyphen: k = XK_hyphen; break;
case Qt::Key_registered: k = XK_registered; break;
case Qt::Key_Up: k = XK_Up; break;
case Qt::Key_Down: k = XK_Down; break;
case Qt::Key_Right: k = XK_Right; break;
case Qt::Key_Left: k = XK_Left; break;
case Qt::Key_Insert: k = XK_Insert; break;
case Qt::Key_Home: k = XK_Home; break;
case Qt::Key_End: k = XK_End; break;
case Qt::Key_PageUp: k = XK_Page_Up; break;
case Qt::Key_PageDown: k = XK_Page_Down; break;
case Qt::Key_F1: k = XK_F1; break;
case Qt::Key_F2: k = XK_F2; break;
case Qt::Key_F3: k = XK_F3; break;
case Qt::Key_F4: k = XK_F4; break;
case Qt::Key_F5: k = XK_F5; break;
case Qt::Key_F6: k = XK_F6; break;
case Qt::Key_F7: k = XK_F7; break;
case Qt::Key_F8: k = XK_F8; break;
case Qt::Key_F9: k = XK_F9; break;
case Qt::Key_F10: k = XK_F10; break;
case Qt::Key_F11: k = XK_F11; break;
case Qt::Key_F12: k = XK_F12; break;
case Qt::Key_F13: k = XK_F13; break;
case Qt::Key_F14: k = XK_F14; break;
case Qt::Key_F15: k = XK_F15; break;
case Qt::Key_F16: k = XK_F16; break;
case Qt::Key_F17: k = XK_F17; break;
case Qt::Key_F18: k = XK_F18; break;
case Qt::Key_F19: k = XK_F19; break;
case Qt::Key_F20: k = XK_F20; break;
case Qt::Key_F21: k = XK_F21; break;
case Qt::Key_F22: k = XK_F22; break;
case Qt::Key_F23: k = XK_F23; break;
case Qt::Key_F24: k = XK_F24; break;
case Qt::Key_F25: k = XK_F25; break;
case Qt::Key_F26: k = XK_F26; break;
case Qt::Key_F27: k = XK_F27; break;
case Qt::Key_F28: k = XK_F28; break;
case Qt::Key_F29: k = XK_F29; break;
case Qt::Key_F30: k = XK_F30; break;
case Qt::Key_F31: k = XK_F31; break;
case Qt::Key_F32: k = XK_F32; break;
case Qt::Key_F33: k = XK_F33; break;
case Qt::Key_F34: k = XK_F34; break;
case Qt::Key_F35: k = XK_F35; break;
case Qt::Key_NumLock: k = XK_Num_Lock; break;
case Qt::Key_CapsLock: k = XK_Caps_Lock; break;
case Qt::Key_ScrollLock: k = XK_Scroll_Lock; break;
case Qt::Key_Shift: k = XK_Shift_R; break; //k = XK_Shift_L; break;
case Qt::Key_Control: k = XK_Control_R; break;// k = XK_Control_L; break;
case Qt::Key_Alt: k = XK_Alt_R; break;//k = XK_Alt_L; break;
case Qt::Key_Meta: k = XK_Meta_R; break;//k = XK_Meta_L; break;*/
case Qt::Key_Super_L: k = XK_Super_L; break; /* left "windows" key */
case Qt::Key_Super_R: k = XK_Super_R; break; /* right "windows" key */
case Qt::Key_Mode_switch: k = XK_Mode_switch; break;
case Qt::Key_Help: k = XK_Help; break;
case Qt::Key_Print: k = XK_Print; break;
case Qt::Key_SysReq: k = XK_Sys_Req; break;
case Qt::Key_0: k = XK_0;break;
case Qt::Key_1: k = XK_1;break;
case Qt::Key_2: k = XK_2;break;
case Qt::Key_3: k = XK_3;break;
case Qt::Key_4: k = XK_4;break;
case Qt::Key_5: k = XK_5;break;
case Qt::Key_6: k = XK_6;break;
case Qt::Key_7: k = XK_7;break;
case Qt::Key_8: k = XK_8;break;
case Qt::Key_9: k = XK_9;break;
}
if (k == 5000)
{
if (!modifier)
{
switch (key)
{
case Qt::Key_A: k = XK_a;break;
case Qt::Key_B: k = XK_b;break;
case Qt::Key_C: k = XK_c;break;
case Qt::Key_D: k = XK_d;break;
case Qt::Key_E: k = XK_e;break;
case Qt::Key_F: k = XK_f;break;
case Qt::Key_G: k = XK_g;break;
case Qt::Key_H: k = XK_h;break;
case Qt::Key_I: k = XK_i;break;
case Qt::Key_J: k = XK_j;break;
case Qt::Key_K: k = XK_k;break;
case Qt::Key_L: k = XK_l;break;
case Qt::Key_M: k = XK_m;break;
case Qt::Key_N: k = XK_n;break;
case Qt::Key_O: k = XK_o;break;
case Qt::Key_P: k = XK_p;break;
case Qt::Key_Q: k = XK_q;break;
case Qt::Key_R: k = XK_r;break;
case Qt::Key_S: k = XK_s;break;
case Qt::Key_T: k = XK_t;break;
case Qt::Key_U: k = XK_u;break;
case Qt::Key_V: k = XK_v;break;
case Qt::Key_W: k = XK_w;break;
case Qt::Key_X: k = XK_x;break;
case Qt::Key_Y: k = XK_y;break;
case Qt::Key_Z: k = XK_z;break;
}
}
else
{
switch (key)
{
case Qt::Key_A: k = XK_A;break;
case Qt::Key_B: k = XK_B;break;
case Qt::Key_C: k = XK_C;break;
case Qt::Key_D: k = XK_D;break;
case Qt::Key_E: k = XK_E;break;
case Qt::Key_F: k = XK_F;break;
case Qt::Key_G: k = XK_G;break;
case Qt::Key_H: k = XK_H;break;
case Qt::Key_I: k = XK_I;break;
case Qt::Key_J: k = XK_J;break;
case Qt::Key_K: k = XK_K;break;
case Qt::Key_L: k = XK_L;break;
case Qt::Key_M: k = XK_M;break;
case Qt::Key_N: k = XK_N;break;
case Qt::Key_O: k = XK_O;break;
case Qt::Key_P: k = XK_P;break;
case Qt::Key_Q: k = XK_Q;break;
case Qt::Key_R: k = XK_R;break;
case Qt::Key_S: k = XK_S;break;
case Qt::Key_T: k = XK_T;break;
case Qt::Key_U: k = XK_U;break;
case Qt::Key_V: k = XK_V;break;
case Qt::Key_W: k = XK_W;break;
case Qt::Key_X: k = XK_X;break;
case Qt::Key_Y: k = XK_Y;break;
case Qt::Key_Z: k = XK_Z;break;
}
}
}
return k;
}
/* DES.CPP Cod*/
/*
* This is D3DES (V5.09) by Richard Outerbridge with the double and
* triple-length support removed for use in VNC. Also the bytebit[] array
* has been reversed so that the most significant bit in each byte of the
* key is ignored, not the least significant.
*
* These changes are
* Copyright (C) 1999 AT&T Laboratories Cambridge. All Rights Reserved.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*/
/* D3DES (V5.09) -
*
* A portable, public domain, version of the Data Encryption Standard.
*
* Written with Symantec's THINK (Lightspeed) C by Richard Outerbridge.
* Thanks to: Dan Hoey for his excellent Initial and Inverse permutation
* code; Jim Gillogly & Phil Karn for the DES key schedule code; Dennis
* Ferguson, Eric Young and Dana How for comparing notes; and Ray Lau,
* for humouring me on.
*
* Copyright (c) 1988,1989,1990,1991,1992 by Richard Outerbridge.
* (GEnie : OUTER; CIS : [71755,204]) Graven Imagery, 1992.
*/
static void scrunch(unsigned char *, unsigned long *);
static void unscrun(unsigned long *, unsigned char *);
static void desfunc(unsigned long *, unsigned long *);
static void cookey(unsigned long *);
static unsigned long KnL[32] = { 0L };
static unsigned long KnR[32] = { 0L };
static unsigned long Kn3[32] = { 0L };
static unsigned char Df_Key[24] = {
0x01,0x23,0x45,0x67,0x89,0xab,0xcd,0xef,
0xfe,0xdc,0xba,0x98,0x76,0x54,0x32,0x10,
0x89,0xab,0xcd,0xef,0x01,0x23,0x45,0x67 };
static unsigned short bytebit[8] = {
01, 02, 04, 010, 020, 040, 0100, 0200 };
static unsigned long bigbyte[24] = {
0x800000L, 0x400000L, 0x200000L, 0x100000L,
0x80000L, 0x40000L, 0x20000L, 0x10000L,
0x8000L, 0x4000L, 0x2000L, 0x1000L,
0x800L, 0x400L, 0x200L, 0x100L,
0x80L, 0x40L, 0x20L, 0x10L,
0x8L, 0x4L, 0x2L, 0x1L };
/* Use the key schedule specified in the Standard (ANSI X3.92-1981). */
static unsigned char pc1[56] = {
56, 48, 40, 32, 24, 16, 8, 0, 57, 49, 41, 33, 25, 17,
9, 1, 58, 50, 42, 34, 26, 18, 10, 2, 59, 51, 43, 35,
62, 54, 46, 38, 30, 22, 14, 6, 61, 53, 45, 37, 29, 21,
13, 5, 60, 52, 44, 36, 28, 20, 12, 4, 27, 19, 11, 3 };
static unsigned char totrot[16] = {
1,2,4,6,8,10,12,14,15,17,19,21,23,25,27,28 };
static unsigned char pc2[48] = {
13, 16, 10, 23, 0, 4, 2, 27, 14, 5, 20, 9,
22, 18, 11, 3, 25, 7, 15, 6, 26, 19, 12, 1,
40, 51, 30, 36, 46, 54, 29, 39, 50, 44, 32, 47,
43, 48, 38, 55, 33, 52, 45, 41, 49, 35, 28, 31 };
void deskey(unsigned char *key, short edf) /* Thanks to James Gillogly & Phil Karn! */
{
register int i, j, l, m, n;
unsigned char pc1m[56], pcr[56];
unsigned long kn[32];
for ( j = 0; j < 56; j++ ) {
l = pc1[j];
m = l & 07;
pc1m[j] = (key[l >> 3] & bytebit[m]) ? 1 : 0;
}
for( i = 0; i < 16; i++ ) {
if( edf == DE1 ) m = (15 - i) << 1;
else m = i << 1;
n = m + 1;
kn[m] = kn[n] = 0L;
for( j = 0; j < 28; j++ ) {
l = j + totrot[i];
if( l < 28 ) pcr[j] = pc1m[l];
else pcr[j] = pc1m[l - 28];
}
for( j = 28; j < 56; j++ ) {
l = j + totrot[i];
if( l < 56 ) pcr[j] = pc1m[l];
else pcr[j] = pc1m[l - 28];
}
for( j = 0; j < 24; j++ ) {
if( pcr[pc2[j]] ) kn[m] |= bigbyte[j];
if( pcr[pc2[j+24]] ) kn[n] |= bigbyte[j];
}
}
cookey(kn);
return;
}
static void cookey(register unsigned long *raw1)
{
register unsigned long *cook, *raw0;
unsigned long dough[32];
register int i;
cook = dough;
for( i = 0; i < 16; i++, raw1++ ) {
raw0 = raw1++;
*cook = (*raw0 & 0x00fc0000L) << 6;
*cook |= (*raw0 & 0x00000fc0L) << 10;
*cook |= (*raw1 & 0x00fc0000L) >> 10;
*cook++ |= (*raw1 & 0x00000fc0L) >> 6;
*cook = (*raw0 & 0x0003f000L) << 12;
*cook |= (*raw0 & 0x0000003fL) << 16;
*cook |= (*raw1 & 0x0003f000L) >> 4;
*cook++ |= (*raw1 & 0x0000003fL);
}
usekey(dough);
return;
}
void cpkey(register unsigned long *into)
{
register unsigned long *from, *endp;
from = KnL, endp = &KnL[32];
while( from < endp ) *into++ = *from++;
return;
}
void usekey(register unsigned long *from)
{
register unsigned long *to, *endp;
to = KnL, endp = &KnL[32];
while( to < endp ) *to++ = *from++;
return;
}
void des(unsigned char *inblock, unsigned char *outblock)
{
unsigned long work[2];
scrunch(inblock, work);
desfunc(work, KnL);
unscrun(work, outblock);
return;
}
static void scrunch(register unsigned char *outof, register unsigned long *into)
{
*into = (*outof++ & 0xffL) << 24;
*into |= (*outof++ & 0xffL) << 16;
*into |= (*outof++ & 0xffL) << 8;
*into++ |= (*outof++ & 0xffL);
*into = (*outof++ & 0xffL) << 24;
*into |= (*outof++ & 0xffL) << 16;
*into |= (*outof++ & 0xffL) << 8;
*into |= (*outof & 0xffL);
return;
}
static void unscrun(register unsigned long *outof, register unsigned char *into)
{
*into++ = (unsigned char) ((*outof >> 24) & 0xffL);
*into++ = (unsigned char) ((*outof >> 16) & 0xffL);
*into++ = (unsigned char) ((*outof >> 8) & 0xffL);
*into++ = (unsigned char) (*outof++ & 0xffL);
*into++ = (unsigned char) ((*outof >> 24) & 0xffL);
*into++ = (unsigned char) ((*outof >> 16) & 0xffL);
*into++ = (unsigned char) ((*outof >> 8) & 0xffL);
*into = (unsigned char) (*outof & 0xffL);
return;
}
static unsigned long SP1[64] = {
0x01010400L, 0x00000000L, 0x00010000L, 0x01010404L,
0x01010004L, 0x00010404L, 0x00000004L, 0x00010000L,
0x00000400L, 0x01010400L, 0x01010404L, 0x00000400L,
0x01000404L, 0x01010004L, 0x01000000L, 0x00000004L,
0x00000404L, 0x01000400L, 0x01000400L, 0x00010400L,
0x00010400L, 0x01010000L, 0x01010000L, 0x01000404L,
0x00010004L, 0x01000004L, 0x01000004L, 0x00010004L,
0x00000000L, 0x00000404L, 0x00010404L, 0x01000000L,
0x00010000L, 0x01010404L, 0x00000004L, 0x01010000L,
0x01010400L, 0x01000000L, 0x01000000L, 0x00000400L,
0x01010004L, 0x00010000L, 0x00010400L, 0x01000004L,
0x00000400L, 0x00000004L, 0x01000404L, 0x00010404L,
0x01010404L, 0x00010004L, 0x01010000L, 0x01000404L,
0x01000004L, 0x00000404L, 0x00010404L, 0x01010400L,
0x00000404L, 0x01000400L, 0x01000400L, 0x00000000L,
0x00010004L, 0x00010400L, 0x00000000L, 0x01010004L };
static unsigned long SP2[64] = {
0x80108020L, 0x80008000L, 0x00008000L, 0x00108020L,
0x00100000L, 0x00000020L, 0x80100020L, 0x80008020L,
0x80000020L, 0x80108020L, 0x80108000L, 0x80000000L,
0x80008000L, 0x00100000L, 0x00000020L, 0x80100020L,
0x00108000L, 0x00100020L, 0x80008020L, 0x00000000L,
0x80000000L, 0x00008000L, 0x00108020L, 0x80100000L,
0x00100020L, 0x80000020L, 0x00000000L, 0x00108000L,
0x00008020L, 0x80108000L, 0x80100000L, 0x00008020L,
0x00000000L, 0x00108020L, 0x80100020L, 0x00100000L,
0x80008020L, 0x80100000L, 0x80108000L, 0x00008000L,
0x80100000L, 0x80008000L, 0x00000020L, 0x80108020L,
0x00108020L, 0x00000020L, 0x00008000L, 0x80000000L,
0x00008020L, 0x80108000L, 0x00100000L, 0x80000020L,
0x00100020L, 0x80008020L, 0x80000020L, 0x00100020L,
0x00108000L, 0x00000000L, 0x80008000L, 0x00008020L,
0x80000000L, 0x80100020L, 0x80108020L, 0x00108000L };
static unsigned long SP3[64] = {
0x00000208L, 0x08020200L, 0x00000000L, 0x08020008L,
0x08000200L, 0x00000000L, 0x00020208L, 0x08000200L,
0x00020008L, 0x08000008L, 0x08000008L, 0x00020000L,
0x08020208L, 0x00020008L, 0x08020000L, 0x00000208L,
0x08000000L, 0x00000008L, 0x08020200L, 0x00000200L,
0x00020200L, 0x08020000L, 0x08020008L, 0x00020208L,
0x08000208L, 0x00020200L, 0x00020000L, 0x08000208L,
0x00000008L, 0x08020208L, 0x00000200L, 0x08000000L,
0x08020200L, 0x08000000L, 0x00020008L, 0x00000208L,
0x00020000L, 0x08020200L, 0x08000200L, 0x00000000L,
0x00000200L, 0x00020008L, 0x08020208L, 0x08000200L,
0x08000008L, 0x00000200L, 0x00000000L, 0x08020008L,
0x08000208L, 0x00020000L, 0x08000000L, 0x08020208L,
0x00000008L, 0x00020208L, 0x00020200L, 0x08000008L,
0x08020000L, 0x08000208L, 0x00000208L, 0x08020000L,
0x00020208L, 0x00000008L, 0x08020008L, 0x00020200L };
static unsigned long SP4[64] = {
0x00802001L, 0x00002081L, 0x00002081L, 0x00000080L,
0x00802080L, 0x00800081L, 0x00800001L, 0x00002001L,
0x00000000L, 0x00802000L, 0x00802000L, 0x00802081L,
0x00000081L, 0x00000000L, 0x00800080L, 0x00800001L,
0x00000001L, 0x00002000L, 0x00800000L, 0x00802001L,
0x00000080L, 0x00800000L, 0x00002001L, 0x00002080L,
0x00800081L, 0x00000001L, 0x00002080L, 0x00800080L,
0x00002000L, 0x00802080L, 0x00802081L, 0x00000081L,
0x00800080L, 0x00800001L, 0x00802000L, 0x00802081L,
0x00000081L, 0x00000000L, 0x00000000L, 0x00802000L,
0x00002080L, 0x00800080L, 0x00800081L, 0x00000001L,
0x00802001L, 0x00002081L, 0x00002081L, 0x00000080L,
0x00802081L, 0x00000081L, 0x00000001L, 0x00002000L,
0x00800001L, 0x00002001L, 0x00802080L, 0x00800081L,
0x00002001L, 0x00002080L, 0x00800000L, 0x00802001L,
0x00000080L, 0x00800000L, 0x00002000L, 0x00802080L };
static unsigned long SP5[64] = {
0x00000100L, 0x02080100L, 0x02080000L, 0x42000100L,
0x00080000L, 0x00000100L, 0x40000000L, 0x02080000L,
0x40080100L, 0x00080000L, 0x02000100L, 0x40080100L,
0x42000100L, 0x42080000L, 0x00080100L, 0x40000000L,
0x02000000L, 0x40080000L, 0x40080000L, 0x00000000L,
0x40000100L, 0x42080100L, 0x42080100L, 0x02000100L,
0x42080000L, 0x40000100L, 0x00000000L, 0x42000000L,
0x02080100L, 0x02000000L, 0x42000000L, 0x00080100L,
0x00080000L, 0x42000100L, 0x00000100L, 0x02000000L,
0x40000000L, 0x02080000L, 0x42000100L, 0x40080100L,
0x02000100L, 0x40000000L, 0x42080000L, 0x02080100L,
0x40080100L, 0x00000100L, 0x02000000L, 0x42080000L,
0x42080100L, 0x00080100L, 0x42000000L, 0x42080100L,
0x02080000L, 0x00000000L, 0x40080000L, 0x42000000L,
0x00080100L, 0x02000100L, 0x40000100L, 0x00080000L,
0x00000000L, 0x40080000L, 0x02080100L, 0x40000100L };
static unsigned long SP6[64] = {
0x20000010L, 0x20400000L, 0x00004000L, 0x20404010L,
0x20400000L, 0x00000010L, 0x20404010L, 0x00400000L,
0x20004000L, 0x00404010L, 0x00400000L, 0x20000010L,
0x00400010L, 0x20004000L, 0x20000000L, 0x00004010L,
0x00000000L, 0x00400010L, 0x20004010L, 0x00004000L,
0x00404000L, 0x20004010L, 0x00000010L, 0x20400010L,
0x20400010L, 0x00000000L, 0x00404010L, 0x20404000L,
0x00004010L, 0x00404000L, 0x20404000L, 0x20000000L,
0x20004000L, 0x00000010L, 0x20400010L, 0x00404000L,
0x20404010L, 0x00400000L, 0x00004010L, 0x20000010L,
0x00400000L, 0x20004000L, 0x20000000L, 0x00004010L,
0x20000010L, 0x20404010L, 0x00404000L, 0x20400000L,
0x00404010L, 0x20404000L, 0x00000000L, 0x20400010L,
0x00000010L, 0x00004000L, 0x20400000L, 0x00404010L,
0x00004000L, 0x00400010L, 0x20004010L, 0x00000000L,
0x20404000L, 0x20000000L, 0x00400010L, 0x20004010L };
static unsigned long SP7[64] = {
0x00200000L, 0x04200002L, 0x04000802L, 0x00000000L,
0x00000800L, 0x04000802L, 0x00200802L, 0x04200800L,
0x04200802L, 0x00200000L, 0x00000000L, 0x04000002L,
0x00000002L, 0x04000000L, 0x04200002L, 0x00000802L,
0x04000800L, 0x00200802L, 0x00200002L, 0x04000800L,
0x04000002L, 0x04200000L, 0x04200800L, 0x00200002L,
0x04200000L, 0x00000800L, 0x00000802L, 0x04200802L,
0x00200800L, 0x00000002L, 0x04000000L, 0x00200800L,
0x04000000L, 0x00200800L, 0x00200000L, 0x04000802L,
0x04000802L, 0x04200002L, 0x04200002L, 0x00000002L,
0x00200002L, 0x04000000L, 0x04000800L, 0x00200000L,
0x04200800L, 0x00000802L, 0x00200802L, 0x04200800L,
0x00000802L, 0x04000002L, 0x04200802L, 0x04200000L,