- Linux entropy pool doesn't know about external, non-default, non-driver entropy sources.
- Modern Linux usually reports
256forcat /proc/sys/kernel/random/entropy_avail. This has to do with the entropy pool rewrite sometime ago that prevented blocking of/dev/random. - There is presently no userland entropy pool seeding "pull" mechanism.
skull-squadron
/ README.md
Last active
November 7, 2023 07:54
How to correctly use a hardware random number generator (hwrng, trng) on Linux 5+ (Debian 12+)
skull-squadron
/ dhparam.pem
Created
May 22, 2023 18:34
8192-bit group 5 dhparam.pem, such as for use with DH TLS
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| -----BEGIN DH PARAMETERS----- | |
| MIIECAKCBAEAjC/0pr9r1mcAiODdJ2hXfokDUPHamlfsA3vuTRTWjX4eewu5Xxj5 | |
| tuWy8YiA3Hyijud91jI6PpaDnsw7Y1v/0o4lMQyYeFGr6sYrSbD8KqfFbuggge4A | |
| 1X7dA4fXGd5pHwFvId5EJx0Niky50qsG5hImbqSkkXTDv1MCu3YKPnU1MaTk+ALO | |
| mnjQ7sLLsSwgl0Jl9RuM22i556PyQLRNDqkkcu4JEtBL3r9TADA1QQ+86CrlsekT | |
| AFRfu2gaOA5lx2kms8hD25PrnDN6wdme8l9aeWfVkIDwj6bwJ82cVBQ201TAQZLn | |
| MCpXbMicY+xJqWyq0GhLnRxK/G76Qu1sBKuiKuB1TZ0D+qmSwlpqt0IUkk7LWF7N | |
| DjGdzll0s4QFtJfMGF1CAGoySe7en21CiUKbW0N40ObK88KWEHXYq5EWeqvdL1/2 | |
| Sh7VuNnvJwMVIf7j7sRzJehy3xxOujMHVUHjfNUdUoMMZVYtHXMX+UO/bG9kuiJc | |
| +ShFwhswOkQPmTvP/brvfC6SFXWnrJOa9O7MWVB6DH+K9FclDEZqgowVP4ZFsO4g |
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| NUM_FIBERS = 1_000_000 # no. of Fibers | |
| UPDATE_INTERVAL = 10_000 # show starting progress every these many fibers | |
| PRINTERS = 100 # at most these no. of fibers will print dots | |
| PRINT_INTERVAL = 10 # every increments of x | |
| PRINT_NTH_FIBER = NUM_FIBERS//PRINTERS | |
| MINI_NAP = Time::Span.new(nanoseconds: 1_000_000) | |
| GC_STATS_PERIOD = Time::Span.new(seconds: 10) | |
| start = Time.utc |
skull-squadron
/ captive-portal-detection-and-internet-presence.md
Created
May 16, 2023 20:30
Captive portal detection and internet presence URLs by vendor
- Apple
- http://www.thinkdifferent.us/ containing
<HTML><HEAD><TITLE>Success</TITLE></HEAD><BODY>Success</BODY></HTML>(no \r\n) - www.appleiphonecell.com
- *.apple.com
- www.itools.info
- www.ibook.info
- www.airport.us
- http://www.thinkdifferent.us/ containing
- *.apple.com.edgekey.net
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| diff --git a/Formula/gpgme.rb b/Formula/gpgme.rb | |
| index 45abd0b45ca..cbb56d52864 100644 | |
| --- a/Formula/gpgme.rb | |
| +++ b/Formula/gpgme.rb | |
| @@ -49,6 +49,7 @@ class Gpgme < Formula | |
| "\\0 --install-lib=#{site_packages}" | |
| system "./configure", *std_configure_args, | |
| + "--enable-fixed-path=#{Formula["gnupg"].opt_bin}", | |
| "--disable-silent-rules", |
skull-squadron
/ list.md
Created
April 18, 2023 21:40
Way more than awesome OS development references
I would learn C and x86/arm assembly first enough to bootstrap.
It's usually good to learn how to write ld linker scripts and how to make something bootable from grub.
Then, I would look Rust because it's easier to create correct no_std kernels.
arm architecture and instruction (ISA) reference
skull-squadron
/ make-relative-bin.sh
Last active
March 18, 2023 02:36
Linux utility: Remove hard-coded absolute library paths and set a single DT_RUNPATH
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| #!/usr/bin/env bash | |
| set -euo pipefail | |
| TGT="$1" | |
| NEW_RUNPATH="${2:-\$ORIGIN/../lib}" | |
| _patchelf() { | |
| (set -x; patchelf "$@") | |
| } |
skull-squadron
/ winget-upgrade-all.ps1
Last active
March 15, 2023 03:50
Windows Workaround a bug in winget that prevents upgrade --all from working
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| $output = winget upgrade | Out-String | |
| $lines = $output.Split([Environment]::NewLine) | |
| $hdrLine = 0 | |
| while (-not $lines[$hdrLine].StartsWith("Name")) { | |
| $hdrLine++ | |
| } | |
| $idIdx = $lines[$hdrLine].IndexOf("Id") |
- Parsing with derivatives
- Parser generators
- ANTLR 4
- The old guard of flex (lex) + bison (yacc), JavaCC + CUP
- Data binding generators (the perils of code generation)
- protoc
- Prisma
- Faster regex engines
skull-squadron
/ google.crt
Last active
April 9, 2017 17:24
Am I smoking crack or does VERIFY_PEER plain not work on 1.8.7 and 1.9.3?
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| #!/usr/bin/env ruby | |
| require 'openssl' | |
| require 'uri' | |
| require 'net/http' | |
| url = URI.parse 'https://rubygems.org/' | |
| http = Net::HTTP.new url.host, url.port | |
| http.use_ssl = true | |
| http.verify_mode = OpenSSL::SSL::VERIFY_PEER | |
| http.read_timeout = 20 |