Anoraks Corner by Tony Sale
So now you think you can break Lorenz?

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Tony Sale's
Codes and Ciphers



The Lorenz machine

Follow pages revising how the Lorenz worked.

The Lorenz SZ42 cipher machine

Its vulnerabilities

a page describing the the vulnerabilities of Lorenz and how they were exploited


The Code Breakers
Tutte, Newman and Turing

Breaking using statistics

a page describing the the statistical attack on Lorenz


The Normal distribution

Speeding up Colossus

a page describing the how the MK II Colossus was speeded up


Tommy Flowers, Allen Coombs

The Intercept Scenarios

Are you up to Breaking Lorenz?

The Radio Intercepts

The tools used to break Lorenz

Click here for the tools

Colossus and Tunny


This page was originally created by the late Tony Sale, the original curator of the Bletchley Park Museum,