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Hi.
Does anyone has some experience with Encryption? I need to encrypt password user submits and store it in the database. And of course I need to decrypt it back and compare to user password when user signs in.
I created a test page and use System.Security.Cryptography.RijndaelManaged. On that page I encrypted string (passwrod) but not sure what to do next. I get Byte() back. How do I store it in the database? But most important how do I decrypt it back? When running encrypt and decrypt on the same page one after another and useing the same key it works with not problem. But if use decrypt separetely it throws me error.
Here's the error I get:
PKCS7 padding is invalid and cannot be removed.
My guess it has something to do with Key and/or IV. Does that mean I need to save Key as well? I'm lost.
Please help.
Thanks,
-- modified at 9:27 Thursday 23rd November, 2006
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I got another solution
You must to create a new class sheet (name.CS)
Add these libraries
using System.Security.Cryptography;
using System.Text;
using System.IO;
using System.Xml;
I made these functions based in a codeproject encrypt solution
<br />
public string EncryptProcess(string password)<br />
{<br />
string passwordEncryted = Encrypt(password, "&%#@?,:*");<br />
return (passwordEncryted);<br />
}<br />
<br />
private static String Encrypt(String strText, String strEncrKey)<br />
{<br />
byte[] bKey = new byte[8];<br />
byte[] IV = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF };<br />
<br />
try<br />
{<br />
bKey = System.Text.Encoding.UTF8.GetBytes(strEncrKey.Substring(0, 8));<br />
DESCryptoServiceProvider des = new DESCryptoServiceProvider();<br />
Byte[] inputByteArray = Encoding.UTF8.GetBytes(strText);<br />
MemoryStream ms = new MemoryStream();<br />
CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(bKey, IV), CryptoStreamMode.Write);<br />
cs.Write(inputByteArray, 0, inputByteArray.Length);<br />
cs.FlushFinalBlock();<br />
return Convert.ToBase64String(ms.ToArray());<br />
<br />
}<br />
catch (Exception ex)<br />
{<br />
return ex.Message;<br />
}<br />
}<br />
<br />
You must to invoice the first process
Ex: string pass = EncryptProcess("SGC"); //Uppercase
the answer is the string "2zhZqCYvfJc="
This is the Encrypt process, write me if works for you..
And i will write the Decrypt process 
keep Learning and you never will be out of date...
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Thanks a lot. I will try. I do believe I've seen something similar online.
Do you had any experience with System.Security.Cryptography.RijndaelManaged?
Thank you.
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 nop
keep Learning and you never will be out of date...
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Thanks anyway. I found some answeres and will try to create different ways of doing it.
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How to Handling Drag event in asp.net controls
please give some idea related this issue
Thanks in advance
by
RPL
r_palanivel83 10:01 4 Jan '06
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Check out this article, it may help you understand them better.
http://weblogs.asp.net/frank_hileman
sam
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Hello,
I have a gridview of the columns, I am hiding the header of the gridview and creating my own header cells. (In fact I have a lot of columns and rowspan,columnspan.., but let simplify the problem)
My target is to sort the grid cicking on the header cells.
I add attributes to each one of the header cells as following
Dim cell11 As New TableCell
cell11.RowSpan = 2
cell11.Text = "Model Name"
cell11.Style.Add("text-decoration", "underline")
cell11.Style.Add("cursor", "hand")
cell11.Style.Add("color", "navy")
Now I have to add onclick attribute to the cell
cell11.Attributes.Add("OnClick", "SortGridView('Model Name')")
Here is my client side code:
var gridViewCtlId = '<%=GridView1.ClientID%>';
function getGridViewControl()
{
if (null == gridViewCtl)
{
gridViewCtl = document.getElementById(gridViewCtlId);
}
}
function SortGridView(colNm)
{
getGridViewControl();
if (null != gridViewCtl)
{
return gridViewCtl.sort[colNm,1];
}
return null;
}
What is the right code in javascript functions?
Thanx
Eric H.
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iam having datagrid with 2 record per page(allow paging =true)
iam having around 6 recs in a database
iam binding data to datagrid
i included check box in a datagrid(exc,good,satis,v satis,poor)
i select the all check box for 6 recs
and clik on save button
iam able to get last value selected but not all
i hope u understand my problem
with regards
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HI,
How to change the visible property of asp control asp:Label in javascript code.Please Help.
Thanks in Advance.
Prya
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document.getElementById('labelName').style.visibility='visible';
paid attention, if the label is located into contentplaceholder the code will be like that:
document.getElementById('ctl00_ContentPlaceHolder1_labelName').style.visibility='visible';
Eric H.
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aaraaayen wrote: How to change the visible property of asp control asp:Label in javascript code.
That is not possible. The server control only exists on the server, and the client script only exist in the browser.
If you want to hide an element with Javascript, use the display or visibility styles.
---
b { font-weight: normal; }
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Try it!
1) Add a HTML Button and an ASP label control
2) Double-Click the button and you will get into the javascript code
3) Past this code
function Button1_onclick() {
if (document.getElementById("lbl").style.visibility=='hidden')
document.getElementById("lbl").style.visibility='visible';
else
document.getElementById("lbl").style.visibility='hidden';
}
Eric H.
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I don't have to try your code, I know what it does.
What it does not do, however, is to change the Visible property of the server control. As I already explained, that is not possible.
---
b { font-weight: normal; }
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If I understood right, he wants to show/hide an ASP:Label control server through javascript, doesn't he? If yes, I try the code that I had posted above and it works very fine.
Eric H.
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ayeleteric wrote: If I understood right, he wants to show/hide an ASP:Label control server through javascript, doesn't he?
That is perhaps what he wants to do, but that was not what he was asking about.
If you are answering the question that you think that he should have asked instead of the question that he actually asked, you have to specify what question it is that you are answering.
---
b { font-weight: normal; }
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HI,
I tried in this way. I am calling this function in textbox onclick but in that stage visible property of the label is false. Once i click update button, its visible is true. Now once again when i leave update button that visible have to set as false. But when i tried i am getting error message like this.
function visiblechange()
{
if(document.getElementById('Label1').style.visibility ='visible')
{
document.getElementById('Label1').style.visibility='hidden';
}
}
Error Message:
Microsoft JScript runtime error: Object required
Please help. Thanks in advance.
Prya
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Try this
You maybe have 2 problems:
1) You have to write =='visible' not ='visible' when you are checking if the label is visible.
2) Your label may be located on a contentpalceholder so for be sure write
getElementById('<% 'Label1'.clientId %>')
Try it and advise
function visiblechange()
{
if(document.getElementById('<% 'Label1'.clientId %>').style.visibility =='visible')
{
document.getElementById('<% 'Label1'.clientId %>').style.visibility='hidden';
}
}
Eric H.
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label's id.style.display = "block" or "none"
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Hi friends
how to build dll file in the bin folder of web appliction in asp.net 2.0
IN ASP.NET 1.1,DLL FILE CREATED WHEN WE BUILD APPLICATION
plz reply me soon
Thanks
PaTHaN
-- modified at 8:47 Thursday 23rd November, 2006
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c# in asp.net
iam using data grid paging in connected model iam getting below exception
iam using the below code
public void DataGrid1_PageIndexChanged( object s, DataGridPageChangedEventArgs e)
{
DataGrid1.CurrentPageIndex = e.NewPageIndex;
getrec(); // binds the record in to a datagrid in connected model
}
AllowCustomPaging must be true and VirtualItemCount must be set for a DataGrid with ID dgrdTitles when AllowPaging is set to true and the selected datasource does not implement ICollection.
plz let me know
with regards
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ravikiranreddydharmannagari wrote: AllowCustomPaging must be true
This property should be set to true
Also rather than calling getrec(); in PageIndexChanged method, create an event PreRender and call the inbuilt DatBind() method in it like
<br />
this.PreRender+=new EventHandler(WebForm1_PreRender);
<br />
private void WebForm1_PreRender(object sender, EventArgs e)<br />
{<br />
DataBind();<br />
}<br />
Mubashir
Every job is a self portrait of the person who did it.
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how i upload Directories/folder on FTP Server...
Plzzz Send Me some source code or Demo
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I already told you that demanding source code will get you nowhere. DOUBLE POSTING will result in everyone ignoring you completely.
____________________________________________________
If at first you don't succeed, skydiving might not be for you.
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I know its not terribly good practice but we need this as a quick, short tearm, fix.
I just want a simple 1 username and password defined in the web.config for use with the premade Login tool login method.
Here is a snippet of the current web.config .. but it does not allow anyone in despite declaring a user in it:
<br />
<authentication mode="Forms"><br />
< forms loginUrl="Logon.aspx" name=".ASPXFORMSAUTH"><br />
<br />
<credentials passwordFormat="Clear" ><br />
<user name="john"<br />
password="keyboard"/> <br />
</credentials> <br />
</forms><br />
</authentication><br />
< authorization><br />
<deny users ="?"/><br />
<allow users="john"/><br />
<br />
</authorization><br />
Can any one shed some light oon the correct way of doing this please ?
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