Honour for Colossus code-cracker

[gagquin]

Honour for Colossus code-cracker

An amateur cryptographer who beat the British World War II computer Colossus in a code-cracking challenge has been honoured for his skills.

Joachim Schueth solved a German cipher in just 46 seconds, more than three hours quicker than the 60 year old PC. He received a prize from the National Museum of Computing, which included a valve from the Colossus machine. Mr Schueth deciphered the code using a laptop and a program he wrote specifically for the challenge. "It was unfair because I was using a modern PC, while Colossus was created more than 60 years ago," he said. "It really is astonishing and humbling that the world's first programmable, digital computer was created in the 1940s."

The Cipher Challenge took place in November 2007 at Bletchley Park, the home of early UK computing efforts, and marked the end of a project to rebuild Colossus.

Tony Sale, who has spent the last 14 years rebuilding the machine said: "Joachim really showed how things have advanced from the days of Colossus." "As well as recapturing the excitement that the Bletchley Park code breakers must have felt, the Cipher Challenge has more importantly highlighted the magnitude of their achievement, their tenacity and their ingenuity."

Secret workings

Mr Schueth competed against other code breakers and a Colossus Mark II machine last November. The target messages were encoded with a Lorenz S42 machine - as used by the German high command - and were transmitted by a team of radio enthusiasts in Paderborn, Germany. Colossus, the size of a bus and widely recognised as being one of the first recognisably modern computers, took three hours and fifteen minutes to unravel the code. Mr Schueth and his machine took just 46 seconds. "My laptop digested ciphertext at a speed of 1.2 million characters per second - 240 times faster than Colossus," he said. "If you scale the CPU frequency by that factor, you get an equivalent clock of 5.8 MHz for Colossus. That is a remarkable speed for a computer built in 1944. "Even 40 years later many computers did not reach that speed."

There were 10 Colossus machines built in the 1940s. They were key in shortening the war by revealing troop movements to the UK armed forces. All of the machines they were broken up after the war in a bid to keep their workings secret.

It is currently on display at The National Museum of Computing at Bletchley Park, Buckinghamshire.

iNfo@

A closer look at the Colossus computer

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[LoKz]

wOw smart guy there :cheers:

[dock98]

no wonder they call it colossus.that thing is huge.

[irefay]

the size of a bus

Hmmm... http://www.nsaneforums.com/index.php?showtopic=10145&hl=

Both are the size of a bus... could it be that spy satellites and code breaking machines are just yellow school buses filled with kids and TI Calculators? Are the buses short buses with idiot savants? Do they paint the buses black or camo to help keep them more secret? Or could it be that by bus they actually mean conversion van... as in the A-Team van? Oh, Its a conspiracy I tells ya!

[LoKz]

Conspiracy irefay i tell ya! lol its a family vagon... lol :smoke: