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Enigma Chiper, Mesin Pemecah Kode

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Post time 22-5-2011 12:31 AM | Show all posts |Read mode
Masih ingat pelem U-571? pelem yg mengisahkan usaha sekelompok tentra marine
sekutu merampas mesin Enigma dari U-boat Jarman, ketika WW 2 maseh
bergelora.



di dalam pelemm itu secara sekilas dijelaskan
betapa penting/mustahaknyerr mesin itu bagi kemenangan pihak sekutu..
Enigma,...mesin yg pengoperasian dan ukurannyer mirip sebuah mesin typewriter

----->Enigma Machine: History And Development Of The Machine



cth2x mesin enigma (Enigma machine)



This is a German Naval Enigma machine


This is the Lorenz Cipher Machine. It was the most advanced encyption machine the Germans made, and was used by Hitler to communicate with the Generals of his army

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Post time 22-5-2011 10:08 AM | Show all posts
U-571, filem yang dibengangi oleh Brits sebab hakikatnya, tentera laut british yang mula2 dapat tawan mesin Enigma tu.

Apa2hal pihak berikat dah tahu camne nak pecahkan kod tentera Jerman sebelum mereka dapat tawan mesin tu...tapi dengan mesin tu sendiri dalam tangan mereka, tugas nak pecahkan kod bertambah mudah
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 Author| Post time 22-5-2011 02:44 PM | Show all posts
Post Last Edit by bluezink at 22-5-2011 14:46

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The Bombe


The bombe was an electromechanical device used by British cryptologists to help break German Enigma-machine-generated signals during World War II. The bombe was designed by Alan Turing


Alan Turing

The bombe was named after, and inspired by, a device that had been designed in 1938 by Polish Cipher Bureau cryptologist Marian Rejewski, and known as the "cryptologic bomb" (Polish: "bomba kryptologiczna"). The British bombe was referred to by Group Captain Winterbotham as a "Bronze Goddess" because its case was made of bronze.[1] The devices were more prosaically described by operators as being "like great big metal bookcases".

A standard German Enigma employed, at any one time, a set of three rotors (in the German Navy, from early 1942, four rotors), each of which could be set in any of 26 positions. The bombe tried each possible rotor position and applied a test. The test eliminated thousands of positions of the rotors; the few potential solutions were then examined by hand. In order to use a bombe, a cryptanalyst first had to produce a "crib" – a section of ciphertext for which he could guess the corresponding plaintext.

.


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Post time 22-5-2011 03:50 PM | Show all posts
komputer terawal..
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Post time 23-5-2011 09:16 AM | Show all posts
confuse gak cara penggunaan ni....
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Post time 23-5-2011 09:39 AM | Show all posts
setiap mesej rahsia antara german akan dimulakan dgn 'hail hitler' dlm bentuk kod rahsia
bermula dari situ lah mereka berjaya memecahan sedikit demi sedikit kod rahsia tu
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 Author| Post time 23-5-2011 10:06 AM | Show all posts
setiap mesej rahsia antara german akan dimulakan dgn 'hail hitler' dlm bentuk kod rahsia
bermula da ...
linnnda Post at 23-5-2011 09:39



   
mcm mana tuuu..ceciter
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Post time 23-5-2011 10:20 AM | Show all posts
penah terbaca kat reader's digest
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 Author| Post time 23-5-2011 10:55 AM | Show all posts
komputer terawal..
HangPC2 Post at 22-5-2011 15:50


kalo ikot info tenet ia meroprkn mesin pencarikk kata laluan (password) bagi mmbuka kod rahsia enigma (teka-teki)


------>Was the first computer a 'Bombe'?
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Post time 23-5-2011 11:08 AM | Show all posts
Yang aku tahu cara penggunaan enigma ni (ni simple giler ni)
1. tukang taip akan taip mesej macam biasa kat mesin enigma tu
2. tapi sistem rotor dan stepping motion dalam mesin tu akan ubah huruf ditaip kepada huruf lain
3. Pihak penerima akan ubah step 1-2 tu
4. Setting rotor akan diubah hari ke hari
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Post time 24-5-2011 09:10 AM | Show all posts
Logik penggunaan mesin ni mudah jer, tapi yang memeningkan kepala pihak bersekutu time tu sebaik sahaja mereka berjaya pecahkan kod tu, esoknya dah jadi tak valid dah sebab kod tu dah ditukar kepada set lain... jadi mereka kena start all over again setiap hari...

Dipihak German plak, mereka mmg ade manual khas (setiap kapten dipertanggungjawabkan untuk simpan) yang memberitahu SELURUH tentera German akan berkomunikasi antara mereka menggunakan set coding yang baru setiap 2 hari (macam Alphawolf cakap)...

Itu ajer cara penggunaanya...
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Post time 24-5-2011 09:25 AM | Show all posts
pada pandangan aku...
pihak us-british dah jumpa mesin enigma dulu.. baru la mereka start buat mesin bombe tu..

sebab tanpa mesin enigma .. mustahil sgt nak dpt idea nak reka bombe dan pecahkan kod german tu
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Post time 24-5-2011 10:09 AM | Show all posts
aku kagum dengan german technology ni.. hebat betul...
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Post time 24-5-2011 12:47 PM | Show all posts
Aku rasa Enigma bukan mesin pemecah kod... Tapi Enigma tu sendiri encoding machine... Machine pemecah kod tu adelah mcm the bombe tu....

WWII punya information war memang best citer dia...
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Post time 24-5-2011 04:43 PM | Show all posts
testas..betul..dah jumpa mesin enigma tu baru diaorang buat bombe...sebab diaorang nak tengok rotor dengan steeping motion enigma tu dulu baru boleh nak buat mathematical calculation....
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Post time 24-5-2011 04:43 PM | Show all posts
testas..betul..dah jumpa mesin enigma tu baru diaorang buat bombe...sebab diaorang nak tengok rotor dengan steeping motion enigma tu dulu baru boleh nak buat mathematical calculation....
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Post time 24-5-2011 10:41 PM | Show all posts
Zaman dulu dah ada teknologi encryption, memang hebat! Yang lebih hebat, semuanya mechanical-based, memang orang yang cipta mesin ni tahap pemikirannya agak advanced.

Bukan setakat encryption, rasanya most technology advancement yang ada skrg ni boleh ditrace balik asalnya dari German.
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Post time 25-5-2011 11:49 AM | Show all posts
kalo x silap nama mesin pemecah kod tu Colossus, yg brits klem sbg first komputer di dunia, tapi sblm tu pihak german pun ada jg cipta komputer, x silap nama Z3 cuma fungsi dia je berbeza.
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Post time 25-5-2011 11:53 AM | Show all posts
masa ww2..german tech mmg terkehadapan
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Post time 26-5-2011 12:29 PM | Show all posts
German memang antara negara yang hebat dalam teknologi..klau kita angkat daripada sumber sejarah sndiri jgak, mereka mrupakan pelopor kepada mesin cetak pertama di dunia..John Guttenberg..klau dlu dah mcm tu skarng ni lagi advanced...
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