delorie.com/archives/browse.cgi   search  
Mail Archives: cygwin/2023/12/20/20:33:17

X-Recipient: archive-cygwin AT delorie DOT com
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 63BF3385E456
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cygwin.com;
s=default; t=1703122396;
bh=c8ADCW37Qh1qpMk/aIOd0EzHev16u1YdauAgRcHeo28=;
h=Date:Subject:To:Cc:References:In-Reply-To:List-Id:
List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe:
From:Reply-To:From;
b=bvvUxy29svu5CquYxrmPIP7hpZDpAS/9qXvyJvkb/007LyONwny73xumgY2UO/yVb
PyBNDzlRli4kmDyyd6mbjSTv3imYWmA6eLQGbgho2zx3aCqRwpt4VxIk7k/q4nPZVi
Budbq6RqCoXySnpD+yJ3yuBmrZC6fP75OShFPahk=
X-Original-To: cygwin AT cygwin DOT com
Delivered-To: cygwin AT cygwin DOT com
DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 41E7F3858CD1
ARC-Filter: OpenARC Filter v1.0.0 sourceware.org 41E7F3858CD1
ARC-Seal: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1703122382; cv=none;
b=FmQBnnsqzZoqi+qrNhz2EP9wggREyqM/h18KDbX0v05k+0wVBYd1BTVD46nf96sGFwyB43ZOBB9J5XPbuPdvuUsaPviBrB3qkuypWQezVlG4BR9P1vBYu7wzh7BkIhPSeXgHtpSTBkPSOukY5LU9cfYIhYNGCBJ0VHtDYuqe6Lw=
ARC-Message-Signature: i=1; a=rsa-sha256; d=sourceware.org; s=key;
t=1703122382; c=relaxed/simple;
bh=mnc2fxrJpha5d/vdC+Ucxrpk3v+XaKgwWdxRFUkBuEA=;
h=Message-ID:Date:MIME-Version:Subject:To:From;
b=RPyJ/imI0kGKSFeRYcKDNygPtvCrtCskJioqdekVThVnvLQ5PmbYaYyexKkgEof0uuAiTqAErQWXB7KjhNyKh7fuTaibnIFRJIONtX6h16/XizmqQg4hA4XvRgux39tXGMQNBDmypLRp6zO4phiU88wSuSvBiqkiH7bR0Z/YplY=
ARC-Authentication-Results: i=1; server2.sourceware.org
X-ASG-Debug-ID: 1703122380-24039d253a2300a0001-w5GHUG
X-Barracuda-Envelope-From: moss AT cs DOT umass DOT edu
X-Barracuda-RBL-Trusted-Forwarder: 128.119.240.136
Message-ID: <d538941a-9054-3013-4498-47bb6b01a0ed@cs.umass.edu>
X-Barracuda-RBL-Trusted-Forwarder: 172.26.65.13
Date: Wed, 20 Dec 2023 20:32:55 -0500
MIME-Version: 1.0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101
Thunderbird/102.15.1
Subject: Re: /dev/u?random implementation
X-ASG-Orig-Subj: Re: /dev/u?random implementation
To: jhg AT acm DOT org, cygwin AT cygwin DOT com
Cc: Jim Garrison <jhg AT jhmg DOT net>
References: <e2f2ea3c-6039-428a-b122-635130dac15a AT jhmg DOT net>
In-Reply-To: <e2f2ea3c-6039-428a-b122-635130dac15a@jhmg.net>
X-Barracuda-Connect: mailsrv.cs.umass.edu[128.119.240.136]
X-Barracuda-Start-Time: 1703122380
X-Barracuda-Encrypted: ECDHE-RSA-AES128-GCM-SHA256
X-Barracuda-URL: https://barramail.cs.umass.edu:443/cgi-mod/mark.cgi
X-Barracuda-BRTS-Status: 1
X-Virus-Scanned: by bsmtpd at cs.umass.edu
X-Barracuda-Scan-Msg-Size: 394
X-Barracuda-Spam-Score: 0.00
X-Barracuda-Spam-Status: No, SCORE=0.00 using global scores of TAG_LEVEL=1000.0
QUARANTINE_LEVEL=1000.0 KILL_LEVEL=5.7 tests=
X-Barracuda-Spam-Report: Code version 3.2, rules version 3.2.3.118342
Rule breakdown below
pts rule name description
---- ---------------------- --------------------------------------------------
X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00, JMQ_SPF_NEUTRAL,
KAM_DMARC_STATUS, NICE_REPLY_A, SPF_HELO_NONE, SPF_PASS, TXREP,
T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6
X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on
server2.sourceware.org
X-BeenThere: cygwin AT cygwin DOT com
X-Mailman-Version: 2.1.30
List-Id: General Cygwin discussions and problem reports <cygwin.cygwin.com>
List-Archive: <https://cygwin.com/pipermail/cygwin/>
List-Post: <mailto:cygwin AT cygwin DOT com>
List-Help: <mailto:cygwin-request AT cygwin DOT com?subject=help>
List-Subscribe: <https://cygwin.com/mailman/listinfo/cygwin>,
<mailto:cygwin-request AT cygwin DOT com?subject=subscribe>
From: Eliot Moss via Cygwin <cygwin AT cygwin DOT com>
Reply-To: Eliot Moss <moss AT cs DOT umass DOT edu>
Sender: "Cygwin" <cygwin-bounces+archive-cygwin=delorie DOT com AT cygwin DOT com>
X-MIME-Autoconverted: from base64 to 8bit by delorie.com id 3BL1XHTv017603

On 12/20/2023 7:32 PM, Jim Garrison via Cygwin wrote:
> I dug around in the Cygwin doc looking for details on how /dev/random
> and /dev/urandom are implemented, but came up empty.  Is this
> documented anywhere?

Writing a simple program and then watching where reading /dev/random
goes using gdb suggests its implemented using the dev_random C++
library supplied by Windows.

EM


-- 
Problem reports:      https://cygwin.com/problems.html
FAQ:                  https://cygwin.com/faq/
Documentation:        https://cygwin.com/docs.html
Unsubscribe info:     https://cygwin.com/ml/#unsubscribe-simple

- Raw text -


  webmaster     delorie software   privacy  
  Copyright © 2019   by DJ Delorie     Updated Jul 2019