Cryptology lab work, looking for clarification on args

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C#

Hello everybody,

Lab9.3 Working on File Encryption - got this to work
Lab9.4 Working on File Decryption - got this to work

The first lines in the book look like this:

// Read the command-line parameters
             //example c:\myfile\abc.txt The file has some data to be encrypted
              string inputFilePath = args[0];

              //example c:\myfile\abcEncrpt.txt This file will be used to save the encrypted format of the input file
              string OutputFilePath = args[1];

              //provide any password
              string filePassword = args[2];

When I tried to compile, I got this error:

Index was outside the bounds of the array.

I could have also changed it to something like this:

string filePassword;
            Console.WriteLine("Enter a Password to decrypy the file");
            filePassword = Console.ReadLine();

So I changed the code to the following and got it to work:

string inputFilePath = "crptTest.txt";

            string OutputFilePath = "crypTestEncrpted.txt";

            string filePassword = "Password";

To improved in this I could hyave done something like:

string filePassword;
            Console.WriteLine("Enter a Password to decrypt the file");
            filePassword = Console.ReadLine();

So here's my question how should I have done it using the args that was defined:

static void Main(string[] args)

I found a cool example on MSDN, but did not work. And I think it is because a similar reason. here is the link:

http://msdn.microsoft.com/en-us/library/system.security.cryptography.rfc2898derivebytes.aspx[^]

or just google Rfc2898DeriveBytes MSDN.


I feel as though I am missing something, even though I got both labs to work, and had fun modifying the code so that the password was not hard coded.

Any feedback on this would be greatly appreciated.

Thanks in advance.