Username: 
Password: 
Restrict session to IP 

The Nap  Go to the The Nap challenge

1 2
Global Rank: 230
Totalscore: 92617
Posts: 1680
Thanks: 1358
UpVotes: 920
Registered: 16y 280d




Last Seen: 35m 36s
The User is Offline
The Nap
Google/translate2Thank You!2Good Post!1Bad Post! link
I added another challenge from Z.
I think this is the 1st crypto here, and i hope you like it.

Happy Challenging
Gizmore
The geeks shall inherit the properties and methods of object earth.
Global Rank: 172
Totalscore: 115513
Posts: 166
Thanks: 164
UpVotes: 121
Registered: 16y 272d
Z`s Avatar



Last Seen: 1y 83d
The User is Offline
The Nap
Google/translate3Thank You!1Good Post!2Bad Post! link
For clarification about the "total number of possible configurations in bits" here is a short summary.
Im sorry if the original description is confusing:

The Enigma cipher machine consists of five variable components:
1. a plugboard which could contain from zero to thirteen dual-wired cables
2. three ordered (left to right) rotors which wired twenty-six input contact points to twenty-six output contact points positioned on alternate faces of a disc
3. twenty-six serrations around the periphery of the rotors which allowed the operator to specify an initial rotational position for the rotors
4. a moveable ring on each of the rotors which controlled the rotational behavior of the rotor immediately to the left by means of a notch
5. a reflector half-rotor (which did not in fact rotate) to fold inputs and outputs back onto the same face of contact points

Your goal is to calculate the total number of possible configurations for such an Enigma machine,
where you can make your own rotors, etc.

And finally a hint: If you cant solve this part by yourself, google is your best friend Smile

Z
Totalscore: 362771
Posts: 107
Thanks: 152
UpVotes: 95
Registered: 16y 223d
Jinx`s Avatar










The User is Offline
RE: The Nap
Google/translate2Thank You!1Good Post!1Bad Post! link
I don't understand how to go on with this. I know what the parts mean and how to configure my machine. But I don't understand what to write after the 1st letter of the given cipher. It would be great to have some hint here, because the key is changing from letter to letter. (if I wrote too much, feel free to edit this post).
Last edited by Jinx - Dec 25, 2010 - 14:07:13
Global Rank: 172
Totalscore: 115513
Posts: 166
Thanks: 164
UpVotes: 121
Registered: 16y 272d
Z`s Avatar



Last Seen: 1y 83d
The User is Offline
RE: The Nap
Google/translate1Thank You!1Good Post!0Bad Post! link
Seems like the webpage changed it's content since the challenge was created.
This archive version should help:
https://web.archive.org/web/20080416011642/http://users.telenet.be:80/d.rijmenants/en/enigmaproc.htm
Global Rank: 552
Totalscore: 45801
Posts: 220
Thanks: 208
UpVotes: 218
Registered: 13y 342d
space`s Avatar
The User is Offline
RE: The Nap
Google/translate1Thank You!1Good Post!1Bad Post! link
Z, this is not the solution forum.
Contact only via c3BhY2VAd2VjaGFsbC5uZXQ= or PM...
Windows can be secure... but only if you don't use it Happy
Global Rank: 230
Totalscore: 92617
Posts: 1680
Thanks: 1358
UpVotes: 920
Registered: 16y 280d




Last Seen: 35m 36s
The User is Offline
RE: The Nap
Google/translate0Thank You!1Good Post!0Bad Post! link
The allies got a real enigma.
They knew how it worked.
The problem was missing config settings the germans did use.
Like the problem here.... config destroyed.

Maybe the link that Z showed was just an example of how it worked?


aHpp yhClaalgnni.g
The geeks shall inherit the properties and methods of object earth.
Global Rank: 4522
Totalscore: 3868
Posts: 11
Thanks: 8
UpVotes: 9
Registered: 7y 171d
Last Seen: 3y 178d
The User is Offline
RE: The Nap
Google/translate1Thank You!1Good Post!0Bad Post! link
I still have problem to calculate the key length... could you please PM me?
Global Rank: 8089
Totalscore: 1047
Posts: 5
Thanks: 3
UpVotes: 3
Registered: 10y 123d
Last Seen: 2y 143d
The User is Offline
RE: The Nap
Google/translate1Thank You!1Good Post!0Bad Post! link
This is driving me up the wall. I bruteforced it several times with all possible rotor and reflector combinations and nothing remotely sensible comes up.

The letters are grouped into fours but all werhmacht enigma samples I found were grouped in fives. I only found groups of four in kriegsmarine messages, but those used different codesheets and had extra steps too, not to mention a fourth rotor and more rotor choices.

The message header has a 4 in what looks like the message length field but it can't be 4 letters long. Is the message key encoded with the pre- or the wartime procedure? The header has two triplets at the end suggesting wartime but the first five ciphertext letters do not correspond to any kengruppen of the day. But on the other hand there's no mention of a day's key that would suggest pre-war (not to mention the date being well into the war).

Finally is the plaintext even in German?
Global Rank: 230
Totalscore: 92617
Posts: 1680
Thanks: 1358
UpVotes: 920
Registered: 16y 280d




Last Seen: 35m 36s
The User is Offline
RE: The Nap
Google/translate0Thank You!1Good Post!0Bad Post! link
I cannot help much, but i think i can tell that no marine is involved.

Keep things simple, i guess :/

I don't know but i think the plaintext should be english (not 100% sure)

Sry
- gizmore
The geeks shall inherit the properties and methods of object earth.
Global Rank: 515
Totalscore: 48561
Posts: 15
Thanks: 12
UpVotes: 13
Registered: 3y 132d
Ogon`s Avatar
The User is Offline
RE: The Nap
Google/translate1Thank You!2Good Post!0Bad Post! link
Quote from gizmore
I don't know but i think the plaintext should be english (not 100% sure)

It is not English.
1 2
Redknee, ckclark, tunelko, silenttrack, n0tHappy, nonfungiblesecurity, quangntenemy, TheHiveMind, Z, balicocat, Ge0, samuraiblanco, arraez, jcquinterov, hophuocthinh, alfamen2, burhanudinn123, Ben_Dover, stephanduran89, braddie0, SwolloW, dangarbri, csuquvq have subscribed to this thread and receive emails on new posts.
1 people are watching the thread at the moment.
This thread has been viewed 17752 times.