File:Bombe Machine, Bletchley Park.jpg
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Summary
[edit]DescriptionBombe Machine, Bletchley Park.jpg |
Remember when computers were actually used for computing? Me neither. This is the Bombe Machine, a device used to help decipher the German Enigma Machine signals - it was akin to a brute force password cracker today. This is from a trip to Bletchley Park - the UK's main decryption center during the war - and the most interesting thing was the revelation as to how a lot of the codes were cracked. In the end, it came down to some very intelligent guesswork and a lot of luck. For example, a lot of the message senders would use names of towns and girlfriend names as the cipher. In one instance, a guy in Greece had been sending a message to another guy in Germany. It was a 4000 character long message and would have taken a long time for him to type. He sent it through, but the guy in Germany messaged back asking him to re-send the message as they didn't receive the signal properly; curiously, the UK interception center DID receive it properly. But this would have frustrated the Greek message sender, and he re-sent the message, but this time by using a lot of abbreviations and he didn't reset the Enigma machine before sending it in his ire, even though he should have done this. The two messages combined, with the knowledge that abbreviations were being used and they were using the same cipher, helped decipher it and did warn the Allies of an impending attack. I would also say it ended the war but this isn't a goddamn fairy tale. |
Date | |
Source | Bombe Machine, Bletchley Park |
Author | mendhak |
Camera location | 52° 00′ 37.12″ N, 0° 44′ 58.41″ W | View this and other nearby images on: OpenStreetMap | 52.010311; -0.749559 |
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Licensing
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This image was originally posted to Flickr by mendhak at https://www.flickr.com/photos/69135870@N00/5125496254. It was reviewed on 1 June 2014 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-sa-2.0. |
1 June 2014
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 16:54, 1 June 2014 | 4,288 × 2,848 (7.11 MB) | FlickreviewR 2 (talk | contribs) | Replacing image by its original image from Flickr | |
16:47, 1 June 2014 | 240 × 159 (55 KB) | Palosirkka (talk | contribs) | {{Information |Description=Remember when computers were actually used for computing? Me neither. This is the Bombe Machine, a device used to help decipher the German Enigma Machine signals - it was akin to a brute force password cracker today. This i... |
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Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Image title |
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Camera manufacturer | NIKON CORPORATION |
Camera model | NIKON D90 |
Exposure time | 1/10 sec (0.1) |
F-number | f/5.6 |
ISO speed rating | 400 |
Date and time of data generation | 13:27, 2 October 2010 |
Lens focal length | 170 mm |
Horizontal resolution | 240 dpi |
Vertical resolution | 240 dpi |
Software used | Ver.1.00 |
File change date and time | 08:10, 29 October 2010 |
Exposure Program | Aperture priority |
Exif version | 2.21 |
Date and time of digitizing | 13:27, 2 October 2010 |
APEX shutter speed | 3.321928 |
APEX aperture | 4.970854 |
APEX exposure bias | 0 |
Maximum land aperture | 5 APEX (f/5.66) |
Metering mode | Pattern |
Light source | Unknown |
Flash | Flash did not fire |
DateTimeOriginal subseconds | 00 |
DateTimeDigitized subseconds | 00 |
Sensing method | One-chip color area sensor |
File source | Digital still camera |
Scene type | A directly photographed image |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 1 |
Focal length in 35 mm film | 255 mm |
Scene capture type | Standard |
Scene control | Low gain up |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Subject distance range | Unknown |
Width | 4,288 px |
Height | 2,848 px |
Image width | 4,288 px |
Image height | 2,848 px |
Serial number of camera | 6469194 |
Lens used | 18.0-200.0 mm f/3.5-5.6 |
Keywords |
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IIM version | 2 |