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Re: Challenge "Not-so-Secret Message from Malawi — Part II (ECC)"

 On March 10, 2022, 7:55 p.m.

Is this challenge working? I have decrypted it 2 different ways, got the same result both ways, but now what? Is the answer supposed to be binary or text? I've…

Re: A New Version of MysteryTwister C3

 On Aug. 5, 2013, 7:36 p.m.

How about a way to have new challenges automatically posted to FB, Twitter, etc?

Re: Challenge "Snow White and the seven dwarfs"

 On April 22, 2013, 5:52 p.m.

I just tried the Java applet on another 64-bit machine that already had Java installed, still gibberish.

Re: Challenge "Snow White and the seven dwarfs"

 On April 21, 2013, 6:48 a.m.

I still get gibberish. Maybe it doesn't work on 64-bit windows?

Edit: Compiled the code on an Ubuntu VM, still no go…

Re: Challenge "Snow White and the seven dwarfs"

 On April 20, 2013, 6:49 p.m.

That's what I've been getting, and apparently Sun is more incompetent than ever and can't even run a simple file server any more.

Re: Challenge "Snow White and the seven dwarfs"

 On April 20, 2013, 3:38 p.m.

Does the windows version of Snow also decrypt this? I can't install Java because apparently Sun is hosting corrupted files.

Re: Challenge

 On Dec. 7, 2012, 4:56 p.m.

In case anyone is trying to get the 1000 points:

At 663 bits, RSA-200 is the largest RSA Challenge Number factored to date.
The sieving effort is esti…

FB/G+ suggestion

 On Oct. 26, 2012, 7:29 a.m.

FB announcements of new challenges are great, but it would also be fun (and good advertising) if MT could write on someones wall something like "Congratulation…

Re: Challenge

 On Aug. 15, 2012, 5:24 a.m.

We would like to know whether there is an algorithm that can
generate the permutation which is needed to decrypt the ciphertext
for messages of any gi…

Re: Running key cipher tools (umbra)

 On April 30, 2012, 3:19 a.m.

It's a bunch of mp3s that were anonymously posted online that sound like number stations with bizarre music and audio-encoded images. For whatever reason it be…

Running key cipher tools (umbra)

 On April 29, 2012, 10:50 p.m.

So I've been trying to decode Umbra transmission #24 (which is probably some odd viral marketing campaign based on cults and the apocalypse) and I am stumped. …

Re: Challenge

 On April 18, 2012, 9:52 p.m.

Just to verify, are we are only supplying the 4 missing numbers with only commas in-between, like:


Just asking because I found 2 sequences so…

Re: Challenge "CMEA 1"

 On March 15, 2012, 4:37 p.m.

This was the most absurdly complicated problem I have ever worked on, and that is probably the most convoluted example of Schneier's normally great writing I h…

Re: Challenge "CMEA 1"

 On March 15, 2012, 4:29 p.m.

i have a problem replicating the behaviour of the given c program, which i assume was used to create the ciphertext.

my implementation encodes a bloc…

Re: Suggestions

 On March 13, 2012, 4:56 p.m.

I was thinking an accumulated score. If you want to be fancy you could have options to set the time frame and who you want displayed, but just an over-all grap…

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