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an example :
1100 1101 0111 0100 0011 0101 1111 0110 first 32 bit
0011 1010 0110 1100 1111 0010 0001 1001 second 32 bit

temp would be 1111 and 0011 1010 0110 1100 0010 0001 1001
shift right : 0111 1001 1101 0011 0110 0001 000 1100
not odd, dont xor with 9908B0DF

then you xor that with 1100 1101 0111 0100 0011 0101 1111 0110 first 32 bit?

and next iteration you do it using 0011 1010 0110 1100 1111 0010 0001 1001 with the next 32 bit fragment?

thinking it over again, the greatest bits...
temp would look like :0 1011 1010 0110 1100 1111 0010 0001 100
dont xor with 9908b0df
xor with 1100 1101 0111 0100 0011 0101 1111 0110

start again with the second and third fragment

wich one is right? the second I would guess

haaan, I understand now. but when does the seed get used?

ptw, this is amazing
I am going to print this thread as a pdf I think ^^

I used the aircrack suite to try and get in, it is pretty easy once you get used to it. For a first try I must say that I really like linux. I tried myself at the "metasploit unleashed" tutorial but could not find the so called "dradis framework". I muste be doing something wrong since I use backtrack5 r2 kde 32 and it should be there...
About metasploit there are a lot of things I dont understand and the tutorial's writer seems to assume them as widely known so he does not explain them...

Macchanger is the first example that came to my mind (since I have not been playing darwinbots for a while, the rand function came up after), I am new to linux, two weeks ago my girlfriend find out the hard way that someone has been downloading copyrighted material with her internet connection, I decided to learn more about it and after a week of constantly studying and trying to understand I learned that even a quite long key was ridiculous if you use wep. I'll say that I knew nothing of what was the later and only had an hint about the former before that week (duh? wep? isnt this some internet thingie?)...
I dont want to be taken seriously since I am a musician and have no skills in programming, but I can get quite obsessive when I dont understand something and I love to learn.
To get back to the crypto track, how the use of a truely random seed state could result in a predictable string of characters?

(I strayed from df, the combat use of random numbers was quite obvious -facedesk- but for terrain generation... I saw lovely fractal landscapes on the web, with moutains, rivers but I did not know that there was any element of randomness in fractals, quite the opposite I thought)

You did help me indeed thank you. I do apologise if my first sentence seemed harsh.
The cryptographic use random numbers in one time pads always fascinated me, the problem is how to obtain them. How old ladies thinking bingo numbers was not random enough for cryptographic use is one example. Blum blum shub uses big primes but I think we can predict that in some years (if I am optimistic, by the end of this century or the next) we well be able to factorize their product so it will be useless. The future of cryptography (it's only my opinion) lies in one time pads (the quantic computer does, in theory at least,  have a mean to securely transmit the keys). As one time pad is a perfectly secure encryption (provided the key is truely unpredictable) I hoped there also was a way to generate keys for them without using expensive radioactive thingies (numerized lava lamps are cool but if they could be replaced by an human written program wich only needs a truely random seed to create an infinite amount of random numbers it would be even better).

so once the first bit of a(1) followed by the last 31 bit has been shifted right and xored with 9908B0D, (if it is odd it is xored again with the remaining bits of the 623 bit long string)
we keep the result as first part of the random number string. if temp is even do the other bits just stay the way they are?

I understand that it twist them around but :
first, to xor dont you need the bits to be binary?
a here being the whole number and a(1) the segment used during the iteration?
and what does
a(i) = temp shifted right one bit xor
         X'9908B0DF' if temp is odd xor
         a(i+397)
mean?