Suppose two english language messages A and B are encrypted with the same one time pad P: X=A^P and Y=B^P.
Then X^Y=(A^P)^(B^P)=A^B so we can try to guess which words are in A and B and xor it with that to see if we get a word back to chip away at decoding the cyphertext.
The difficulty is that the words overlap, they don't line up easily. For example the messages might be like this:
>>10 actually i still think this might even work...
If we forget about truly random numbers... and just expect a simple prng and two random seeds, then it should reduce to simply having a long enough message to crack ^^ tadaa
for example, two 8-bit lsfr (lfsr?) will repeat every 255 bits, and there will be 255*254 pairs of seeds..
then you just need to match the sequence =D
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Anonymous2013-05-15 22:39
What's your OTP, /prog/? Mine is Cirno\Agni Cirno. The contest of fire and ice, I just love it!
...well, having a long enough message + resources to compute enough prng streams.. lfsr's are good because each seed is basically just the same sequence with a different offset...
and the attack gets better if the lfsrs aren't of the same size =)
>>18
There are millions of Tohos and you pick fucking Cirno out of all those?
I think this thing of "Cirno" being posted everywhere is just an elaborate troll from Re/g//g/it.
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Anonymous2013-05-15 23:29
>>21
Cirno's awesome, fuck you! She's cute and sweet (sometimes), yet she can beat the shit out of the other fairies and kinda hold her own against Marisa for a little while.
>>1
i guess if they didn't encrypt the spaces it would be a bit more difficult..
but the overlap should probably be more of a help than an obstacle? (also helps if you know how long each word is... but probably not that lucky)
maybe just run like a letter-pair/byte lookup (~26*256*2? bytes) over the strings looking for words from a dictionary
>>33
I have nothing to prove to you, anglophonic piece of shit I fucking hate you.
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Anonymous2013-05-16 10:49
>>36
Good, good, let the burrhurt flow through, let in envelope you, let darkness shroud your heart, allow the darkness to become your salvation. Only then can you become a true avenger.
>>38
Good little brother. Sustain the rage. You are now on a path the rest of you can't follow. Feel the butthurt running through your very veins. You are an avenger.
AAAAAAAAAAAHHHHHHHHHHHHHHHHHHHHHHHHHHRRRRRRRRRRRHHHHHHHHHHHHHH
LE ENCULER FAIR!!!
LE ENCULER FAIR!!!!
LE CONNARD ANGLO LE ENCULER FAIR I FUCKING HATE YOU AGDFS GFD GDFAGDSFSDFSDD DIE IN A FUCKING FIRE CONNARDENCULER FAIR
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Anonymous2013-05-16 13:57
>>42
So it begins. Just as I once did little brother, you to have long since closed your eyes. Your only goal now lurks in the darkness.