[3851] in cryptography@c2.net mail archive
MD5
daemon@ATHENA.MIT.EDU (Andrew Maslar)
Fri Dec 25 12:32:25 1998
Date: Fri, 25 Dec 1998 11:37:03 -0500
From: Andrew Maslar <amaslar@home.com>
To: Cryptography List <cryptography@c2.net>
Hello all.
I'm new to the list; hope I can be helpful some day.
But first a question:
I'm toying around with various protocols for key exchange, and I wonder,
if an attacker intercepted the result of the following operation:
md5(x) + md5(x + y + z)
(the +'s mean concatenation)
and the attacker already knew:
1. the nature of the operation
2. x
3. z
Could s/he compute y?
Thanks.
-Andrew
