CODE-BREAKING 171
Code-breaking at Bletchley Park
Electronic devices, such as the Colossus
(seen here in operation), allowed
cryptographers to run multiple attempts
to crack an Enigma message in a very short
time. The Colossus could process 5,000
characters a second.US_170-171_F_Code_breaking.indd 171 05/03/19 3:12 PM