Third naval message broken

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Message 2417 - Posted: 13 Feb 2013, 0:06:48 UTC

The third Enigma message from Stefan Krah´s M4 Project (the last from the Ralph Erskine messages) was broken. See http://enigma.hoerenberg.com/ for more details.

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thinking_goose

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Message 2418 - Posted: 13 Feb 2013, 4:05:30 UTC

Are there any more unbroken codes from that time period we could have a go at? There must be some messages from the Japanese navy that were never decoded, I would have thought.
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TBREAKER
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Message 2421 - Posted: 13 Feb 2013, 18:48:18 UTC

I hope the project will go on! It is the only real M4 hillclimbing project with enough cpu power to break the M4. (ciphertext only attack)

I posted this message also in the "cafe" thread:

1 VROL
2 NMKA
3 JCRS
4 AJTG
5 SJEY
6 EXYK
7 KZZS
8 HVUO
9 CTRF
10 RCRP
11 FVYP
12 LKPP
13 LGRH
14 VVBB
15 TBRS
16 XSWX
17 GGTY
18 TVKQ
19 NGSC
20 HVGF
21 VAOL
22 NMKA

Full ciphertext:

VROLNMKAJCRSAJTGSJEYEXYKKZZSHVUOCTRFRCRPFVYPLKPPLGRHVVBBTBRSXSWXGGTYTVKQNGSCHVGFVAOLNMKA


Ciphertext without indicators:

JCRSAJTGSJEYEXYKKZZSHVUOCTRFRCRPFVYPLKPPLGRHVVBBTBRSXSWXGGTYTVKQNGSCHVGF

Enigma M4 Thetis key (date: 1.May.1945 / time: 16.30 / incoming radio message / U-534)


All the best

Michael

PS: Up to now, we failed to break it...
-=> Breaking German Navy Ciphers - The U534 Enigma messages <=-
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Profile Olicheski
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Message 2489 - Posted: 21 Mar 2013, 2:11:28 UTC

if is decode... were is the massage???

I see many things of the project, but nothing about the broken massage.

=/
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Misho

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Message 2490 - Posted: 21 Mar 2013, 7:07:57 UTC

hello.
ok, if the message is broken what we do now? what the project is calculating? i downloaded some parts of project, but i don't know what my CPU is processing. what's happening?
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Message 2493 - Posted: 21 Mar 2013, 14:16:05 UTC - in response to Message 2490.  
Last modified: 21 Mar 2013, 14:16:22 UTC

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Chromatix

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Message 2495 - Posted: 21 Mar 2013, 15:02:32 UTC - in response to Message 2489.  
Last modified: 21 Mar 2013, 15:03:09 UTC

This project didn't break the message, which is probably why not much detail about the break is published here.

A link to the project which *did* break it - using a Bombe simulator and manually-written cribs and some major research into possible plaintexts - is right at the top of this thread. You'll need to look under the "Rasch message".
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Message boards : News : Third naval message broken




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