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Yes... I always use when I store password for my own system.
But the user wants to decrypt the string as well. You might got this already from previous discussions ..
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You do know that MD5 has been shown to be weak, right?
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Hey Dave....
You mean MD5 hashing is not secure enough and easily broken(even if it is one way hash)
Should I opt for Sha-1 or Sha-2 ?
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If your passwords are sensitive you should use a stronger hash function, like SHA. Some security flaws were identified in SHA-1 (see wiki[^]), so you should use SHA-2 (224, 256, 384 and 512 bits).
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Yes.. You are right. I was also thinking the same.
Thanks for your help.
Cheers. ![Rose | [Rose]](https://www.codeproject.com/script/Forums/Images/rose.gif)
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Yes. MD5 is not very strong. SHA256 and 512 works best with random salt.
Best wishes,
Navaneeth
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Thank you so much for your help. It was already in my mind to change this to SHA-2 hash. Just as you suggested, I think its time to change 
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No matter what you do to it, people using the program will have both the data and the code to decrypt it. You can only delay them. However, if you leave it as plain text even the silliest noob could read it (on the other hand, you'd have more to fear from actual hackers, not the noobs)
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ha ha ... if you fear about users who uses Reflectors to get strings... DotFuscator would be your option... 
In DotFuscator there is also an option to encrypt string in dlls. 
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That wouldn't solve the problem, nothing would, the problem is impossible to solve
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Ya I agree. Even though using DotFuscator.. It can also be cracked quite easily...
So I think we are thinking too much unnecessarily.. 
The actual author might have already found the solution lol.
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Yea you're probably right 
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On my last project I had to have a Windows Service Telnet into a Unix system, so I had to store the username and password. I stored them in a database with other configuration data. Only users with access to the configuration database would able to see them.
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hi dudes,
i want to copy a table from an access database to another table on another access database in windows application using c#,what is the best solution,i dont want my application to hang while copying the data,i will be thankful.
and how can i make a progress bar and relate it to this copy so it will show how much further is needed to be done.u would solve a big problem of mine by answering me,thank u all.
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1 - you can do it in another thread
2 - you can show a progress bar, but it will mean making lots of smaller copies, which will slow down the process.
Christian Graus
Driven to the arms of OSX by Vista.
Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.
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Wouldn't it have to be done row-by-row anyway?
When I copy data from one table to another I use a DataReader.
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Does the table exist in the target database or do you need to create it too?
Are you doing this in a WinForms application? If so, why? I do such things in Windows Services.
0) Open a connection to the source database
1) Get a count of records to copy
2) Use ExecuteReader to get a DataReader for the records to copy
3) Open a connection to the target database
4) Set up a parameterized insert statement for the target connection
5) while ( reader.Read() )
5.1) Set the parameter values
5.2) ExecuteNonQuery
5.3) Update the ProgressBar
6) Close the reader, and both connections
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thank u all especialy u pieballconsult for ur solution,the table exists in the destination table,and one more quenstion,when i executereader my select statement for reading from the source table,how can i access each column that is being returned to set it as an parameter for the insert statement?
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dudes i found the ways to access those fields in datareader,so my last question is solved,but iv got a new problem,and that is i have a large amount of records in my database tables,so it would take a very long time for selecting and inserting into destination table row by row.how can i do that by copying the whole table at once,and insert it at once too.i might user dataset and its datatables,but it doesn't work,can anybody give me an example of filling a datatable of a dataset from connection 1,and insert that datatable into connection 2 database? thank u.
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hello all
my question is there any method to determine if MonthCalender selected date is bolded or not?
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Data bold means its a part of how you design. If you find it as SelectedDate means the date is already bold if bold is taken for your selection item. 
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Okay, I bet this question might have been asked dozens of times before, but at the end of the day, I am still confused.
I am working on a charting/plotting application. My application will also have WinForms controls. Please note that I dont want to use third party controls.
Edit: Actually it's little bit more than a simple charting application. I need to plot hundreds of symbols on the plot. Additionally, the plot will be interactive, e.g., selecting, moving or editing the symbols, adding/editing text on the chart itself. Any second opinions?
My current options are:
GdiPlus: Seems best, but does not supports hardware acceleration.
WPF: Practically, its still too slow.
SlimDX: Might be overkill
Tao: Don't know much yet
XNA: ditto
Since I plan to use Windows 7 features in my application, So this will be a blend of WinForms and custom graphics.
Any help or links comparing the above would be greatly appreciated.
"Do first things first, and second things not at all."
— Peter Drucker.
modified on Wednesday, November 11, 2009 2:09 AM
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The NULL Developer wrote: GdiPlus: Seems best, but does not supports hardware acceleration.
Yes, that's just standard 2D C# code
The NULL Developer wrote: WPF: Practically, its still too slow.
It's done using DirectX, so if it's an option, why not use DirectX without WPF, if you want it to be faster ?
The NULL Developer wrote: XNA: ditto
Another technology based on DirectX.
your options are
1 - GDI ( or GDI+ )
2 - DirectX
3 - OpenGL
That's all that exists, everything else builds on one of those.
Christian Graus
Driven to the arms of OSX by Vista.
Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.
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Microsoft Chart Controls for Microsoft .NET Framework 3.5 (Windows and ASP.NET)
Besides the libraries, get the VS add-on, documentation and massive 200 sample set.
They're great (IMO).
There should be a WPF version around too.
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If you are supporting Vista SP2 / Windows 7 and up only, then you might consider using Direct2D[^], a new hardware-accelerated immediate-mode Windows graphics API. You will have to do a bunch of interop but if you badly need the performance it could be worth it.
Otherwise, you should be able to get decent performance out of GDI+ if you optimize well - buffering, batching, etc. If you use System.Drawing you'll have the advantage of being cross-platform as well.
If you don't mind using a non-free solution, there's VG.net[^], a vector graphics library that handles rendering for you, optimizes heavily, and is easy on memory.
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