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That's great, thank you. But I would like to use keys (validationKey and decryptionKey) stored in my web.config file. Also, I want to retrieve a value from the HTTP HEADERS and encrypt that. Then append the encrypted string to a URL and redirect to another page and decrypt it there.
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Hi,
If you want you can store the keys in web.config or else you can use registry etc. Store them as strings and covert them to Byte array while doing the encryption.
private static void GetKeys(byte[] Key, byte[] Vector)
{
string[] keystring;
string[] vectorstring;
byte[] intKey = new byte[24];
byte[] intVector = new byte[7];
strKey = System.Configuration.ConfigurationSettings.AppSettings["Key"];
strVector = System.Configuration.ConfigurationSettings.AppSettings["Vector"];
keystring = strKey.Split(new char[]{','});
vectorstring= strVector.Split(new char[]{','});
//build the keys
for(int i=0; i<23; i++)
{
intKey[i] = Convert.ToByte(strKey[i]);
}
for(int i=0; i<7; i++)
{
intVector[i] = Convert.ToByte(strVector[i]);
}
byte[] intLocalKey = {intKey[0], intKey[1], intKey[2], intKey[3], intKey[4], intKey[5], intKey[6], intKey[7], intKey[8], intKey[9], intKey[10], intKey[11], intKey[12], intKey[13], intKey[14], intKey[15], intKey[16], intKey[17], intKey[18], intKey[19], intKey[20], intKey[21], intKey[22], intKey[23]};
byte[] intLocalVec = {intVector[0], intVector[1], intVector[2], intVector[3], intVector[4], intVector[5], intVector[6], intVector[7]};
Key = intLocalKey;
Vector = intLocalVec;
}
Regards,
Mahen
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Thanks so much, you've been a really great help. But one last thing, what does the size of the Initialisation vector need to be and what characters may it store? Cos I need this for the web.config too.
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Hi,
The size is 7. Its there in the declration of the array.
Regards,
Mahen
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What is the StrValue that you pass to the streamwriter?
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Hi,
strValue is the text that needs to be encrypted.
Regards,
Mahen
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Can I not convert the string to a byte array and then pass it to the memorystream? Won't this work too? How do I retrieve the encrypted string once the process is complete?
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Hi,
In the code used to encrypt add the following statement to get the encrypted text into a string variable strRtnvalue.
strRtnvalue = Convert.ToBase64String(ms.GetBuffer(),0,Convert.ToInt32(ms.Length));
Regards,
Mahen
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What text encoding must be used for the byte arrays? I'm using the UniCodeEncoding. But I keep getting an error that the key length is wrong for this algorithm. But my key is 48characters in length and the IV is 16cahracters in length.
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Please dont reinvent the wheel. Use SSL. 
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Hi people,
I'm having a rather weird problem.
I have tried the code in this article http://www.codeproject.com/cs/webservices/AdvAsynchWebService.asp[^] and it works perfectly well. Now I'm trying to use the same technique in my windows form. I call a webservice method asynchronously that returns a factorized version of a number I send (example on MSDN at http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpguide/html/cpconinvokingwebservicesasynchronously.asp[^]) When I display the resulting string in a messagebox, everything works fine but when I try to display the result in a label on the form, something goes wrong and the form freezes. It is frustrating to see a working example and not being able to make your own example work 
Does anyone have any idea why this is happening and how I may resolve the issue? I can post my code if necessary.
Thanks,
Talal
"Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning."
--Rich Cook
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hi all,i have some prob in sending mail,i am using smtp to send and receive mail but i need the send mail details(send items as in yahoo,etc..),is it possible using smtp?
Note:
i also try to use outlook but it did not get the access permission(it show access denied) even i add the aspnet user and iuser_machine account for fullrights.
is there any way to solve my prob?hlp plz.........
thanks in advance.
Regards,
ayyp
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I have a listview-control in detail mode with two columns. The columnheaders are clickable, but how can I detect which columnheader was clicked.
And which event should I check?
thanks,
Ward
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u can use
listView1_ColumnClick event of listview
rahul
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Yes, I was that far. But how can I detect if it was column[0] or column[1] that has been clicked on?
Ward
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Ok, I found it:
<br />
if(e.Column == 0)<br />
{<br />
}<br />
else if(e.Column == 1)<br />
{<br />
}<br />
Ward
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Hi
I have a COM DLL(C++ Code), I am calling this dll from a C# application.
Is it possible to debug the c++ code from C# application?
Regards
Sarma
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hi
i am working on wtsapi32.dll to get mad address of client that connect to trminal server.
i use wtsclienthardwareid = 13 . but evry time i get a diffrente number .any one can help me.
in generall what is wtsclienthardwareid and if it is mac address how can read it. i am writing my program in c#.thx
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Hi all,
i have problem with combobox collection items.  i need to check all entrys in combo box with foreach, i know the way but i dont know the exact class for combo box items(like ListItem).Thank u.
Best Regards,
ranandbe.
-- modified at 1:20 Wednesday 7th June, 2006
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try out following
for(int i=0;i < comboBox1.Items.Count;i++)
{
MessageBox.Show(comboBox1.GetItemText(comboBox1.Items[i]));
}
rahul
-- modified at 1:39 Wednesday 7th June, 2006
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thank u for replying, now i work with the same what you send but i want to know using foreach statement.
Thanks & Regards.,
ranandbe
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i don't think that it is possible to iterate
through foreach becouse i didn't found any
class for combobox items.
rahul
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In a combo box the items are just strings so you can do this:
foreach (string itm in comboBox1.Items)
{
MessageBox.Show(itm);
}
HTH
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MCSD-Gandalf wrote: In a combo box the items are just strings...
Not always true.
The Items property is an ObjectCollection because you can stuff whatever you want in the collection, and render the Items yourself in a custom drawing routine. It's usually strings, but not always.
Share and enjoy.
Sean
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