DES with partial plain text

[Davidi74]

Hi.

I'm hoping someone can tell me how to "white out" a couple of values that are unknown in the plain text for a brute force attack.

I have been searching all over the forums and have been unable to find an answer.

I'm looking at the m14000_a3-pure.cl, but I don't know which lines to modify.

Any assistance would be greatly appreciated