AminetAminet
Search:
81788 packages online
About
Recent
Browse
Search
Upload
Setup
Services

util/misc/AHIRNG-morphos.lha

Mirror:Random
Showing:m68k-amigaosppc-amigaosppc-morphosi386-arosi386-amithlonppc-warpupppc-powerupgeneric
No screenshot available
Short:AHIRNG - Random Number Generator via AHI
Author:Rupert Hausberger <natmeg at gmx.net>
Uploader:Rupert Hausberger <natmeg gmx net>
Type:util/misc
Version:1.2
Architecture:ppc-morphos
Date:2012-03-06
Download:http://aminet.net/util/misc/AHIRNG-morphos.lha - View contents
Readme:http://aminet.net/util/misc/AHIRNG-morphos.readme
Downloads:1215
Description
===========
  AHIRNG (Audio Hardware Interface Random Number Generator) is a tool to
  generate REAL random number from a soundcard.

Requirements
============
  - MorphOS 1.x
  - NList classes
  - AHI 4.x

  - 44khz/16bit soundcard
  - Analoge noise source

Installation
============
  Installation is very simple.
  Just drag the AHIRNG-drawer where you like, it does not need assigns.

Usage
=====
  Connect your Pegasos-onboard/Soundcard line-in to a analoge radio/SAT
receiver.
  Remove the areal from the receiver so you only hear the pink-noise. This is
our   source for the random numbers.

  Now start the tool and press 'Monitor'. Adjust the input-gain to about ~90%.
  Watch the gauges, they should be around ~(+-)25.000 to (+-)30.000.

  Now select the output file, press 'Record' and see the random bytes comming...
  If the needed amount of random-bytes has been recorded press 'Stop'. Now press
  "Analyse output file" to check the quality. Quality should be at least 'High'
in   all five tests for randomness...

  Technical
  ---------
  Sampling is done at 44khz in 16bit. This means we got a raw-stream of   44000
* 2 * 2 bytes/s (44000hz * 2 bytes (16bits) * 2 channels) = 176.000 bytes/s  
Next step is to convert this stream into quality random numbers. This is done  
with the following function:

  for (i = 0; i < 44000; i++) //for every second   {      UWORD l = ((((ULONG
*)rawdata)[i] >> 16) & 0xffff);  //extract left channel      UWORD r =  (((ULONG
*)rawdata)[43999 - i] & 0xffff); //extract right channel and invert

     rnddata[i] = (l - r) & 0xff; //substract the inverted left channel from the
right   }

  ToolTypes
  ---------
  TOOLPRI/K/N - Set to toolpri from -127 to 127, defaults to 0

Author
======
  ©2005-2012 Rupert Hausberger <natmeg at gmx.net>
  http://natmeg.mooo.com/

Copyrights
==========
NList : ©2001-2012 NList Open Source Team
        http://www.sourceforge.net/projects/nlist-classes/

License
=======
  GPL. Please refer to the file COPYING for details.

History
=======
  Please refer to the file ChangeLog for details.



Contents of util/misc/AHIRNG-morphos.lha
 PERMSSN    UID  GID    PACKED    SIZE  RATIO METHOD CRC     STAMP          NAME
---------- ----------- ------- ------- ------ ---------- ------------ -------------
[generic]                 4564    4708  96.9% -lh5- c888 Mar  1 01:13 AHIRNG.info
[generic]                35113   81492  43.1% -lh5- 813e Mar  1 01:36 ahirng/ahirng
[generic]                22353   22353 100.0% -lh0- 3927 Mar  1 01:13 AHIRNG/AHIRNG.info
[generic]                 4560    4700  97.0% -lh5- 610b Mar  1 01:13 AHIRNG/Docs.info
[generic]                 1490    3260  45.7% -lh5- 280b Mar  1 01:13 AHIRNG/Docs/AHIRNG.guide
[generic]                 7182    7320  98.1% -lh5- 5bbd Mar  1 01:13 AHIRNG/Docs/AHIRNG.guide.info
[generic]                 1185    2313  51.2% -lh5- 56cf Mar  1 01:13 AHIRNG/Docs/AHIRNG.readme
[generic]                 7182    7320  98.1% -lh5- 5bbd Mar  1 01:13 AHIRNG/Docs/AHIRNG.readme.info
[generic]                  142     230  61.7% -lh5- 46ad Mar  1 01:36 AHIRNG/Docs/ChangeLog
[generic]                 7182    7320  98.1% -lh5- 5bbd Mar  1 01:13 AHIRNG/Docs/ChangeLog.info
[generic]                 6996   18092  38.7% -lh5- a33a Mar  1 01:13 AHIRNG/Docs/COPYING
[generic]                 7182    7320  98.1% -lh5- 5bbd Mar  1 01:13 AHIRNG/Docs/COPYING.info
---------- ----------- ------- ------- ------ ---------- ------------ -------------
 Total        12 files  105131  166428  63.2%            Mar  6 21:06

Aminet © 1992-2017 Urban Müller and the Aminet team. Aminet contact address: <aminetaminet net>