Path: ...!news.mixmin.net!weretis.net!feeder8.news.weretis.net!reader5.news.weretis.net!news.tota-refugium.de!.POSTED!not-for-mail
From: Marcel Logen <333200007110-0201@ybtra.de>
Newsgroups: sci.crypt
Subject: Re: lun - Lucky Number
Date: Sat, 8 Mar 2025 23:34:33 +0100
Organization: Bureau Logen
Message-ID: <20250308sa223433@o15.ybtra.de>
References: <vqg3sj$3q7rg$1@stefan.eternal-september.org> <vqi2io$8r9n$1@dont-email.me> <vqi2qe$90e8$1@stefan.eternal-september.org> <vqidud$arf3$2@dont-email.me>
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8; format=fixed
Content-Transfer-Encoding: 8bit
Injection-Date: Sat, 8 Mar 2025 23:34:33 +0100
Injection-Info: tota-refugium.de;
	logging-data="1296611"; mail-complaints-to="abuse@news.tota-refugium.de"
User-Agent: geLogen/28 (ZmxuZXdzLzEuMy4wcHJlMjggKGZvciBHTlUvTGludXgp)
Cancel-Lock: sha1:bVzKGkLnT1k2/qKuV9nl+AUNYnU=
X-User-ID: eJwFwYEBACAEBMCVCF/GEf3+I3QXBkVvR8CDQXWWGDV1puXW2TGLrS8nwVPdQcn1DNN2Hz4syhHy
X-Face: d"kJ4BU(/+*3A=/U0Mf_D[UF,wX7~=0uKuC9I!v`)WgNu`IBhSIGLTg\gVOQ"a;|v8*_JB8Qf->iK?VQv}:D>V_.e4~`cE>OZ.9!)\n;~$}6lC>f#SNg2=^Hla'g^4a{KVd-;pgqGtZY'GH,n\|C[5?w@A_^p(V*nfR?9
Bytes: 2783
Lines: 39

Rich in sci.crypt:

>Ok, here's a simple random number generator using /dev/urandom:
>
>    #!/usr/bin/tclsh
>
>    set fd [open /dev/urandom {RDONLY BINARY}]
>    binary scan [read $fd 16] ww hi lo
>    close $fd
>
>    puts "Your 128-bit random number is: [expr {abs($hi)*2^64 + abs($lo)}]"

Interesting. But what is "ww"?

16 * 8 = 128 -> OK, but ...:

>Four sample runs:
>
>    ~$ ./random.tcl 
>    Your 128-bit random number is: 12845925169244013330
>    ~$ ./random.tcl 
>    Your 128-bit random number is: 12267131317558982811
>    ~$ ./random.tcl 
>    Your 128-bit random number is: 10434877321040400260
>    ~$ ./random.tcl 
>    Your 128-bit random number is: 16618556391581443091
          ^^^
             64 (?)

| $ echo 'l(16618556391581443091)/l(2)' | bc -l
| 63.84942886744934185453

But I'm not entirely sure if I'm on the right track.

Marcel                                                       (Lines: 40)
-- 
   ╭───╮                 ╭──╮ ╭────╮  ╭─╮ ╭───╮        ..56..╭────╮     
╮  ╰─╮ ╰────╮  ╭──╮   ╭──╯  │ │  ╭─╯  │ ╰─╯   ╰────╮ ╭───╮   ╰─╮  ╰─╮   
│    ╰────╮ │  │  ╰───╯     ╰─╯  ╰─╮  ╰───╮  ╭─────╯ │   ╰──╮  ╰─╮  ╰─╮ 
╰─────────╯ ╰──╯                   ╰──────╯  ╰───────╯..55..╰────╯    ╰─