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-   -   Encrypted Thread, Part 2 (http://zelaron.com/forum/showthread.php?t=42281)

Lenny 2009-06-25 05:49 PM

ePeen duel!!

Answer the age-old question about where we can download a 56k modem, and we'll throw in a special Mantra shield.

Mantralord 2009-06-25 06:29 PM

its ironic because you need a modem to download the 56k modem to begin with....a classic chicken and the egg problem!!!!

Skurai 2009-06-25 07:38 PM

Quote:

Originally Posted by Mantralord (Post 676267)
its ironic because you need a modem to download the 56k modem to begin with....a classic chicken and the egg problem!!!!

Oh, wow! I never noticed that!
Weird... Then again, I think if the chicken came first, it has much better chances, since wtf layed AND hatched the egg. It's like 2-1 ratio or whatever.

Grav 2009-06-25 08:50 PM

Quote:

Originally Posted by Mantralord (Post 676267)
its ironic because you need a modem to download the 56k modem to begin with....a classic chicken and the egg problem!!!!


I actually laughed at this, nay, I guffawed. Thank you crazy gay mexican man.

Mantralord 2009-11-22 08:39 PM

well in case anyone is wondering what the fuck (and i know you scrubs arent) is wrong with the algorithm:

the state of the current stream byte is 40 bits, but only 2^32 of those will correspond to the actual output byte...keeping in mind that the next generated byte uses two of the previous state bytes, you can mount a differential attack based on the elimination of the possible states of those 2 bytes based on the previous stream byte, and so on to the next byte and so on.

in the end i estimate you'd need around 2^50 work and a few kb of known plaintext to break it

another weakness is the key schedule, which doesn't do enough mixing and thus a related key attack is possible for very long keys

easiest fix: do feed-forward after mixing
better fix: fuck you grav!!


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