Passing RC4 key data into HTML via UVNCS_KeyData

Bonji — Mon, 26 Jan 2009 07:27:31 GMT

I am trying to use the new security property KeyData to pass the RC4 key to the client without the need of an external file, but I can't seem to get the syntax correct. I have truncated the HEX version of the key because obviously I don't want that to show up in a forum post.

Am I entering the key properly? Should there be a space in between every HEX char? I was also struggling on how to convert the key generated by VNC to a format usable by this ActiveX. I found an online converter that changed the text string from the file into a HEX format. Should this work? Is there a better to get a HEX string out of that file?

Can someone show me the correct syntax to define this property in HTML?

[code]

<HTML>
<HEAD>
<TITLE>VNC Viewer Website</TITLE>
<script language="Javascript">;
function OnConnect() {
window.ViewerX.Disconnect()
window.ViewerX.HostIP = document.VNCViewer.Address.value
window.ViewerX.Port = document.VNCViewer.Port.value
window.ViewerX.Connect()
}
function OnDisconnect() {
window.ViewerX.Disconnect()
}
function OnCAD() {
window.ViewerX.SendCAD()
}
function OnRefresh() {
window.ViewerX.RequestRefresh()
}
function OnFit() {
window.ViewerX.StretchMode = 1
}
function OnNormal() {
window.ViewerX.StretchMode = 0
}
function OnFullColor() {
window.ViewerX.RestrictPixel = 0
}
function On8Bit() {
window.ViewerX.RestrictPixel = 1
}
</script>
</HEAD>
<BODY>
<h2 align="center">VNC Viewer Control</h2>
<hr>
<form name="VNCViewer">
IP address:&nbsp<input id="Address" type="text" size="15" value="HOSTNAME">
Port:&nbsp<input id="Port" type="text" size="6" value="5900">
&nbsp&nbsp&nbsp
<input onclick="OnConnect()" type="button" value="Connect">   <input onclick="OnDisconnect()" type="button" value="Disconnect">
</p>
</form>
<hr>
<p><input onclick="OnCAD()" type="button" value="Ctl+Alt+Del">
<input onclick="OnRefresh()" type="button" value="Refresh">
<input onclick="OnFit()" type="button" value="Size to Screen">
<input onclick="OnNormal()" type="button" value="Size to 100%">
<input onclick="OnFullColor()" type="button" value="Full Color">
<input onclick="On8Bit()" type="button" value="8bit Color"></p>
<p>
<OBJECT id="ViewerX" style="BORDER-RIGHT: 1px solid; BORDER-TOP: 1px solid; BORDER-LEFT: 1px solid; BORDER-BOTTOM: 1px solid"
width="800" height="600" classid="CLSID:62FA83F7-20EC-4D62-AC86-BAB705EE1CCD" VIEWASTEXT CodeBase="viewerx.cab">
<PARAM NAME="HostIP" VALUE="">
<PARAM NAME="Port" VALUE="5900">
<PARAM NAME="Password" VALUE="">
<PARAM NAME="CustomCompression" VALUE="1">
<PARAM NAME="CustomCompressionLevel" VALUE="5">
<PARAM NAME="JPEGCompression" VALUE="1">
<PARAM NAME="JPEGCompressionLevel" VALUE="5">
<PARAM NAME="CopyRect" VALUE="1">
<PARAM NAME="EmulateThreeButton" VALUE="1">
<PARAM NAME="SwapMouseButtons" VALUE="0">
<PARAM NAME="Encoding" VALUE="7">
<PARAM NAME="ViewOnly" VALUE="0">
<PARAM NAME="RestrictPixel" VALUE="0">
<PARAM NAME="ScaleNum" VALUE="1">
<PARAM NAME="ScaleDen" VALUE="1">
<PARAM NAME="ScaleEnable" VALUE="0">
<PARAM NAME="FullScreen" VALUE="0">
<PARAM NAME="LocalCursor" VALUE="1">
<PARAM NAME="MessageBoxes" VALUE="1">
<PARAM NAME="DisableClipboard" VALUE="0">
<PARAM NAME="ThumbnailMode" VALUE="0">
<PARAM NAME="LoginType" VALUE="1">
<PARAM NAME="MsUser" VALUE="">
<PARAM NAME="MsDomain" VALUE="">
<PARAM NAME="MsPassword" VALUE="">
<PARAM NAME="ProxyIP" VALUE="">
<PARAM NAME="ProxyPort" VALUE="-1">
<PARAM NAME="ProxyUser" VALUE="">
<PARAM NAME="ProxyPassword" VALUE="">
<PARAM NAME="ProxyType" VALUE="0">
<PARAM NAME="ConnectionBar" VALUE="1">
<PARAM NAME="StretchMode" VALUE="0">
<PARAM NAME="UVNCS_EnableSecurity" VALUE="1">
<PARAM NAME="UVNCS_KeyStorage" VALUE="1">
<PARAM NAME="UVNCS_KeyData" VALUE="31 32 38 20 62 69 74 ...">
</OBJECT>
</p>
</BODY>
</HTML>

[/code]

RE: Passing RC4 key data into HTML via UVNCS_KeyData

Support (s-code) — Mon, 26 Jan 2009 07:27:31 GMT

Sure, I'll post sample C# project tomorrow.

RE: Passing RC4 key data into HTML via UVNCS_KeyData

Bonji — Mon, 26 Jan 2009 07:09:35 GMT

Can I see a code example showing the syntax on passing a HEX value into the UVNCS_KeyDataAsHexStr property? Nothing I have tried is working.

RE: Passing RC4 key data into HTML via UVNCS_KeyData

Support (s-code) — Sat, 24 Jan 2009 04:02:33 GMT

UVNCS_KeyData expects SAFEARRAY of bytes and in your code your are passing a string to it. There is a VBscript function that allows to convert sting to SAFEARRAY of bytes. Sorry I'm not so good at VBscript so I cannot tell you exactly which method you should use, but if you google for it you sure will be able to find it.

Otherwise you might want to use UVNCS_KeyDataAsHexStr property instead. It accepts RC4 key if form of string of HEX values.

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Passing RC4 key data into HTML via UVNCS_KeyData

RE: Passing RC4 key data into HTML via UVNCS_KeyData

RE: Passing RC4 key data into HTML via UVNCS_KeyData

RE: Passing RC4 key data into HTML via UVNCS_KeyData