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hacker.org Forum Index
Search found 45 matches
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Topic: Real Simple Access
efe

Replies: 14
Views: 9238
PostForum: Challenges   Posted: Thu Sep 08, 2011 10:13 am   Subject: Real Simple Access
Ok, now I solved it with the new modulus Smile
Topic: Real Simple Access
efe

Replies: 14
Views: 9238
PostForum: Challenges   Posted: Thu Sep 08, 2011 9:49 am   Subject: Real Simple Access
Hmmm.... I think that now Alice nor Charly can decrypt the message. The number must be smaller than the modulus as Tron said!
Topic: Berma calculation
efe

Replies: 10
Views: 8616
PostForum: The Hacker's Server   Posted: Sat Oct 09, 2010 1:52 pm   Subject: Berma calculation
This python code shows me all solutions in range 0..9999:

for n in range(10000):
s = sum((n-1)%m for m in range(2,7))
if s==0 and (n%7)==0:
pr ...
Topic: Duke Box
efe

Replies: 26
Views: 18032
PostForum: Challenges   Posted: Sun Aug 08, 2010 9:47 am   Subject: Duke Box
I've identified all of the songs but still don't know what to do with the song titles or artists.
Maybe the answer is hiding somewhere else...
Topic: Hack VM (initial memory file) [answered]
efe

Replies: 3
Views: 4504
PostForum: Challenges   Posted: Fri May 22, 2009 2:33 pm   Subject: Hack VM (initial memory file) [answered]
But you can assume that all memory cells are initialized with zero.
Topic: Super Small Hello World
efe

Replies: 6
Views: 8118
PostForum: Challenges   Posted: Sat Mar 28, 2009 10:20 am   Subject: Super Small Hello World
That is in fact a display problem in the javascript implementation.
Space instructions appear in the trace when using the PHP implementation, however...
and of course they count as cycles!
Topic: Danger - don't read this
efe

Replies: 13
Views: 6311
PostForum: The Hacker's Server   Posted: Wed Mar 11, 2009 9:12 pm   Subject: Danger - don't read this
adum has just fixed that issue, so you may now safely click the link - and nothing will happen to your PM's !
Topic: Danger - don't read this
efe

Replies: 13
Views: 6311
PostForum: The Hacker's Server   Posted: Wed Mar 11, 2009 2:46 pm   Subject: Danger - don't read this

I've warned you!

Don't click here: http://bit.ly/dontclickme
Topic: Like a 8411
efe

Replies: 24
Views: 20940
PostForum: Challenges   Posted: Tue Mar 10, 2009 9:58 pm   Subject: Like a 8411
The result must be submitted 'like a 8411' Razz
Topic: Server hacked
efe

Replies: 111
Views: 211011
PostForum: The Hacker's Server   Posted: Fri Mar 06, 2009 10:45 am   Subject: Server hacked
Your account data is published, if you signed up for hacker.org before 21 Nov 2008.
Topic: List of Hacker.org members online
efe

Replies: 16
Views: 10207
PostForum: The Hacker's Server   Posted: Wed Mar 04, 2009 2:18 pm   Subject: List of Hacker.org members online
Thanks W1zard!

Luckily my password was strong enough, and it hasn't been cracked Very Happy
Now it is even more secure.

The passwords have been cracked for 3139 users.
And I got out more passwords ( ...
Topic: The next generation of FileSharing...
efe

Replies: 10
Views: 10853
PostForum: Challenges   Posted: Wed Feb 25, 2009 12:22 am   Subject: The next generation of FileSharing...
I've got it.

There is no encrytion algorithm or compression used. It is a kind of raw format.
Try to find out the file format of the decoded file.

@c0rt3x : I sent you a PM.
Topic: Super Fast Brainfuck
efe

Replies: 8
Views: 9268
PostForum: Challenges   Posted: Fri Jan 09, 2009 6:56 pm   Subject: Super Fast Brainfuck
Just to inform you: I set a new KOTH score for "Super Fast Brainfuck" ! Very Happy

It was really fun to code this and there is still a lot of optimization possible.
I not even used threading!
Topic: Fast Sort Too Hard?
efe

Replies: 7
Views: 5038
PostForum: Challenges   Posted: Sat Jan 03, 2009 12:24 am   Subject: Fast Sort Too Hard?
No, no, it's not too hard. I'm sure it is solvable.
I'm mulling over which algorithm to use here. I thought about radix sort and quicksort.
My analysis shows that both algorithms would take far belo ...
Topic: Fast String Reversal
efe

Replies: 5
Views: 7919
PostForum: Challenges   Posted: Wed Dec 31, 2008 8:21 pm   Subject: Fast String Reversal
But you can only create 32 threads!
How can you keep them synchronized?
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