how to test md5 in c# in visual studio

just want to ask if anyone know how to test this md5 in visual studio?

this is my md5

   using System;
using System.Security.Cryptography;
using System.Text;

class Example
{
    // Hash an input string and return the hash as
    // a 32 character hexadecimal string.
    static string getMd5Hash(string input)
    {
        // Create a new instance of the MD5CryptoServiceProvider object.
        MD5 md5Hasher = MD5.Create();

        // Convert the input string to a byte array and compute the hash.
        byte[] data = md5Hasher.ComputeHash(Encoding.Default.GetBytes(input));

        // Create a new Stringbuilder to collect the bytes
        // and create a string.
        StringBuilder sBuilder = new StringBuilder();

        // Loop through each byte of the hashed data 
        // and format each one as a hexadecimal string.
        for (int i = 0; i < data.Length; i++)
        {
            sBuilder.Append(data[i].ToString("x2"));
        }

        // Return the hexadecimal string.
        return sBuilder.ToString();
    }

    // Verify a hash against a string.
    static bool verifyMd5Hash(string input, string hash)
    {
        // Hash the input.
        string hashOfInput = getMd5Hash(input);

        // Create a StringComparer an compare the hashes.
        StringComparer comparer = StringComparer.OrdinalIgnoreCase;

        if (0 == comparer.Compare(hashOfInput, hash))
        {
            return true;
        }
        else
        {
            return false;
        }
    }


    static void Main()
    {
        string source = "Hello World!";

        string hash = getMd5Hash(source);

        Console.WriteLine("The MD5 hash of " + source + " is: " + hash + ".");

        Console.WriteLine("Verifying the hash...");

        if (verifyMd5Hash(source, hash))
        {
            Console.WriteLine("The hashes are开发者_StackOverflow社区 the same.");
        }
        else
        {
            Console.WriteLine("The hashes are not same.");
        }

    }
}
// This code example produces the following output:
//
// The MD5 hash of Hello World! is: ed076287532e86365e841e92bfc50d8c.
// Verifying the hash...
// The hashes are the same.

The RFC provides a handful of test vectors you can test against:

MD5 ("") = d41d8cd98f00b204e9800998ecf8427e
MD5 ("a") = 0cc175b9c0f1b6a831c399e269772661
MD5 ("abc") = 900150983cd24fb0d6963f7d28e17f72
MD5 ("message digest") = f96b697d7cb7938d525a2f31aaf161d0
MD5 ("abcdefghijklmnopqrstuvwxyz") = c3fcd3d76192e4007dfb496cca67e13b
MD5 ("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789") =
d174ab98d277d9f5a5611c2c9f419d9f
MD5 ("123456789012345678901234567890123456789012345678901234567890123456
78901234567890") = 57edf4a22be3c955ac49da2e2107b67a

Open Visual Studio...new Console Application....paste that code (replacing the existing page) and press CTRL + F5. By pressing CTRL + F5, the console window will remain open.

Of course, copy and pasting the code will only get you so far in learning how it works and what it's doing ;)

The md5 class gives you a 16 byte long hash , if your trying to view this hash as a string you need to use the System.Text.Encoding namespace and covert the text over to a string value. As far as testing the MD5 , if it's not 16 bytes long, id say the function failed.