Search found 8 matches

by ilzmastr
Mon Apr 29, 2013 12:44 am
Forum: Boards of Canada
Topic: The 6-number sequence as it stands
Replies: 1768
Views: 1468345

Waz wrote:I'm betting on it being a "collect the numbers and then collect the key" thing
Yes, I am expecting the same.
But this is still a super fun addicting game!
by ilzmastr
Mon Apr 29, 2013 12:36 am
Forum: Boards of Canada
Topic: The 6-number sequence as it stands
Replies: 1768
Views: 1468345

Not sure if I've missed something about what you're trying to rule out ilzmastr, but the point of a (properly-done) message encrypted with a one-time-pad is that you couldn't rule out the decryption keys, because the pad/key will be long enough that your guesses would produce EVERY possible message ...
by ilzmastr
Mon Apr 29, 2013 12:26 am
Forum: Boards of Canada
Topic: The 6-number sequence as it stands
Replies: 1768
Views: 1468345

After sufficient testing, my results indicate that it is highly unlikely that BoC are reusing a 3 member OTP on the 36 digit code (unlikely and not impossible, since the 36 digit code is not completely known yet). the most legible results of my brute force crack are here:
http://pastebin.com ...
by ilzmastr
Mon Apr 29, 2013 12:23 am
Forum: Boards of Canada
Topic: The 6-number sequence as it stands
Replies: 1768
Views: 1468345

Solved it, everybody. Actually pretty simple!

Each number has a corresponding pair generated using transcyclic group reduction.

So we get:

699742 / 628315 / 717228 / 936557 / ------ / 519225
699723 / 628303 / 717207 / 936537 / ------ / 519200

Subtract the bottom row from the top row and:

19 12 ...
by ilzmastr
Sun Apr 28, 2013 10:23 pm
Forum: Boards of Canada
Topic: The 6-number sequence as it stands
Replies: 1768
Views: 1468345

After sufficient testing, my results indicate that it is highly unlikely that BoC are reusing a 3 member OTP on the 36 digit code (unlikely and not impossible, since the 36 digit code is not completely known yet). the most legible results of my brute force crack are here:
http://pastebin.com ...
by ilzmastr
Sun Apr 28, 2013 6:15 pm
Forum: Boards of Canada
Topic: The 6-number sequence as it stands
Replies: 1768
Views: 1468345

I am readying a brute force crack of the BoC code via a One Time Pad approach assuming the pad is re-used across the 6 keys and that the output generates recognizable words (in the Oxford dictionary).
I am also checking against a list of BoC exclusive words that are not found in a dictionary like ...
by ilzmastr
Fri Apr 26, 2013 9:03 pm
Forum: Boards of Canada
Topic: The 6-number sequence as it stands
Replies: 1768
Views: 1468345

For anyone that wants to play around with one time pads, heres my Python code that subtracts a pad from a key, scroll all the way down:
http://www.codeskulptor.org/#user10_f9aS7PxtT4jSw2j.py

print old_decrypt_key('boards',[5,1,9,2,2,5]) will remove the pad "boards" from the code " 5 1 9 2 2 5" and ...
by ilzmastr
Thu Apr 25, 2013 12:22 am
Forum: Boards of Canada
Topic: Something strange just happened on the BoC Facebook page.
Replies: 402
Views: 387018

One Time Pads and some dead ends

About a dead end when using a One Time Pad decryption approach, feel free to offer suggestions on what pads to use…or suggestions period.
http://pastebin.com/b78zU6wD

I plan to implement this into a website, but I did this on my break and I have a lot of work to get back to, so I might not respond ...