From: Brian Candler <B.Candler@...>
Date: 2007-03-30T15:02:14+09:00
Subject: Re: How to md5 a string?

On Fri, Mar 30, 2007 at 12:13:14PM +0900, Bontina Chen wrote:
> 
> I'm using hexdigest in Digest/MD5 but got totally different outputs from
> other tools.
> I got some clues that in windows I should read the source I would like
> to hash with binary mode.
> But I have no idea how to transform a string to binary mode.
> Anyone could give my some suggestion?

Your sources must be byte-for-byte identical, including any newlines.

e.g.

echo "hello" | md5sum
echo -n "hello" | md5sum

will give different answers.