I was told that MD5 has a weak key and that Secure Hash Algorithm (SHA-1) is
stronger.

-----Original Message-----
From: Howie Hamlin [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, February 19, 2002 12:53 PM
To: CF-Talk
Subject: Re: only one MD5 hash?


You can't recover the text from an MD5 hash.  The idea of the hash is that
the hash is created based on a known key (a password, for
example) and that you can duplicate the results of the hash if you know the
original text and the key.  MD5 is commonly used in SMTP
authentication where the user know his password and the server knows the
password.  The server presents a challenge string (the
string changes each time) that the client uses to produce an MD5 string
(using the password as the key).  The client then sends the
MD5 result to the server and the server compares it to its own result.
Thus, you verify the password without actually transmitting
it.

Regards,

Howie

----- Original Message -----
From: "Cameron Childress" <[EMAIL PROTECTED]>
To: "CF-Talk" <[EMAIL PROTECTED]>
Sent: Tuesday, February 19, 2002 11:36 AM
Subject: RE: only one MD5 hash?



> Brute forcing this 100,000 character string would take a very very very
long
> time.

<snip?

> -Cameron


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