swordfish --- a password generator Post: 59404

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Special Forums Cybersecurity swordfish --- a password generator Post 59404 by Perderabo on Saturday 18th of December 2004 03:29:15 PM

12-18-2004

Administrator Emeritus

If I do this:

Code:

$ ./swordfish
>>}###@>---- define X=(n{ABCDEF})
>>}###@>---- XXXXXX
0F5C7E
9833F3
9713BE
1EBE49
195969

>>}###@>----

I can generate random hexadecimal numbers. Password generators are very close to being random number generators. So it is fair to ask a password generator to pass tests intended for a random number generator. I did this:

Code:

$ ./swordfish "define X=(n{ABCDEF})" "format 1000000" "X<80>" > hex.txt
This command took 13711 seconds.
$

At that point I had one million lines of hexadecimal numbers, each 80 characters in length. This is exactly the input format needed by the asc2bin program of the diehard test suite. I ran diehard on the data file, selecting all 15 tests. The data passes all 15 tests. The results are attached.

diehard.txt (56.2 KB)

Last edited by Perderabo; 07-06-2005 at 09:41 AM.. Reason: Fix typo

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LEARN ABOUT SUNOS

srand

rand(3UCB)					     SunOS/BSD Compatibility Library Functions						rand(3UCB)

NAME

       rand, srand - simple random number generator

SYNOPSIS

       /usr/ucb/cc[ flag ... ] file ...
       int rand()

       int srand( seed);
       unsigned seed;

DESCRIPTION

       rand() uses a multiplicative congruential random number generator with period 2**32 to return successive pseudo-random numbers in the range
       from 0 to "2**31 -1."

       srand() can be called at any time to reset the random-number generator to a random starting point. The generator is initially seeded with a
       value of 1.

SEE ALSO

       drand48(3C), rand(3C), random(3C)

NOTES

       Use of these interfaces should be restricted to only applications written on BSD platforms.  Use of these interfaces with any of the system
       libraries or in multi-thread applications is unsupported.

       The spectral properties of rand() leave a great deal to be desired. drand48(3C) and random(3C) provide much better, though more	elaborate,
       random-number generators.

       The low bits of the numbers generated are not very random; use the middle bits. In particular the lowest bit alternates between 0 and 1.

SunOS 5.10							    12 Feb 1993 							rand(3UCB)