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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rand_r

rand(3C)																  rand(3C)

NAME

       rand(), rand_r(), srand() - simple random-number generator

SYNOPSIS

DESCRIPTION

       uses  a	multiplicative,  congruential, random-number generator with period 2^32 that returns successive pseudo-random numbers in the range
       from 0 to 2^15-1.

       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.

       returns a random number at the address pointed to by the randval parameter.  The seed parameter can be set at any time to start the random-
       number generator at an arbitrary point.

   Note
       The spectral properties of leave a great deal to be desired.  provides a much better, though more elaborate, random-number  generator  (see
       drand48(3C)).

RETURN VALUE

       If seed or randval is NULL, returns 0.  Otherwise, returns a psuedo-random integer.

EXAMPLES

       The following:

	      int x, y;
	      srand(10);
	      x = rand();
	      y = rand();

       would produce the same results as:

	      int x, y, s = 10;
	      x=rand_r(&s);
	      y=rand_r(&s);

WARNINGS

       Users  of  should  note	that  rand_r()	now conforms with POSIX.1c.  The old prototype of is supported for compatibility with existing DCE
       applications only.

SEE ALSO

       drand48(3C), random(3M), thread_safety(5), random(7).

STANDARDS CONFORMANCE

																	  rand(3C)