I am trying to figure out how to get the MD5 sum of a file that is like the
result from the MD5sum.exe program that is readily available on the
internet. I tried the following but it gives me something completely
different.... Any ideas?

MD5sum.exe output = c37a2719bd83ba766b29d8f83cee6258
My program output = w3onGb2DunZrKdj4PO5iWA==

public string GetMD5Hash( byte[] input_buffer) {
// create implementation of MD5
MD5 md5 = new MD5CryptoServiceProvider();
// get hash
return System.Convert.ToBase64String(md5.ComputeHash(input_buffer));
}

chis2k <(E-Mail Removed)> wrote:
> I am trying to figure out how to get the MD5 sum of a file that is like the
> result from the MD5sum.exe program that is readily available on the
> internet. I tried the following but it gives me something completely
> different.... Any ideas?
>
> MD5sum.exe output = c37a2719bd83ba766b29d8f83cee6258
> My program output = w3onGb2DunZrKdj4PO5iWA==
>
> public string GetMD5Hash( byte[] input_buffer) {
> // create implementation of MD5
> MD5 md5 = new MD5CryptoServiceProvider();
> // get hash
> return System.Convert.ToBase64String(md5.ComputeHash(input_buffer));
> }

You're assuming that the result of MD5sum is the Base64 result - it
looks more like hex to me. Indeed, if you try the following program
which converts your base64 to hex, you'll see a familiar sequence...

using System;

public class Test
{
static void Main()
{
byte[] md5 = Convert.FromBase64String
("w3onGb2DunZrKdj4PO5iWA==");
Console.WriteLine (BitConverter.ToString(md5));
}
}

--
Jon Skeet - <(E-Mail Removed)>
http://www.pobox.com/~skeet/
If replying to the group, please do not mail me too

Thanks! That was it!

"Jon Skeet" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> chis2k <(E-Mail Removed)> wrote:
> > I am trying to figure out how to get the MD5 sum of a file that is like
the
> > result from the MD5sum.exe program that is readily available on the
> > internet. I tried the following but it gives me something completely
> > different.... Any ideas?
> >
> > MD5sum.exe output = c37a2719bd83ba766b29d8f83cee6258
> > My program output = w3onGb2DunZrKdj4PO5iWA==
> >
> > public string GetMD5Hash( byte[] input_buffer) {
> > // create implementation of MD5
> > MD5 md5 = new MD5CryptoServiceProvider();
> > // get hash
> > return System.Convert.ToBase64String(md5.ComputeHash(input_buffer));
> > }
>
> You're assuming that the result of MD5sum is the Base64 result - it
> looks more like hex to me. Indeed, if you try the following program
> which converts your base64 to hex, you'll see a familiar sequence...
>
> using System;
>
> public class Test
> {
> static void Main()
> {
> byte[] md5 = Convert.FromBase64String
> ("w3onGb2DunZrKdj4PO5iWA==");
> Console.WriteLine (BitConverter.ToString(md5));
> }
> }
>
> --
> Jon Skeet - <(E-Mail Removed)>
> http://www.pobox.com/~skeet/
> If replying to the group, please do not mail me too