MD5

[Andrew Maslar]

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