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---
layout: post
author: Sofía Celi, Thom Wiggers
title:  "KEMTLS and Cloudflare: designing and implementing for the real world"
---
*Running post-quantum experiments*

This article has also been posted to [Thom Wiggers’s blog](https://thomwiggers.nl/talk/post-quantum-tls-without-handshake-signatures-at-rwc-2021/).

Fundamentally, the Transport Layer Security protocol (TLS), which secures most

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clientMsg := "hello, server"
serverMsg := "hello, client"

config = &Config{
	Certificates: nil,
	MinVersion:   VersionTLS10,
	MaxVersion:   VersionTLS13,
	CipherSuites: allCipherSuites(),
}

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# How to set Tor to run as background process on every OSX login

This builds up on top of [osx-tor](https://github.com/b4rton/osx-tor)

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prekeys-xmpp_1  | encountered error when communicating with the raw server: server closed connection without sending any data - this probably happened because of a malformed request
prekeys-raw_1   | panic: runtime error: invalid memory address or nil pointer dereference
prekeys-raw_1   | [signal SIGSEGV: segmentation violation code=0x1 addr=0x48 pc=0x500eaf]
prekeys-raw_1   | 
prekeys-raw_1   | goroutine 28 [running]:
prekeys-raw_1   | github.com/otrv4/otrng-prekey-server/vendor/github.com/coyim/gotrax.(*ClientProfile).SerializeForSignature(0x0, 0x40, 0x14, 0xc0005d1301)
prekeys-raw_1   | 	/go/src/github.com/otrv4/otrng-prekey-server/vendor/github.com/coyim/gotrax/otr_serialize.go:12 +0x4f
prekeys-raw_1   | github.com/otrv4/otrng-prekey-server/vendor/github.com/coyim/gotrax.(*ClientProfile).Serialize(0x0, 0x40, 0x64, 0x80)
prekeys-raw_1   | 	/go/src/github.com/otrv4/otrng-prekey-server/vendor/github.com/coyim/gotrax/otr_serialize.go:51 +0x2f
prekeys-raw_1   | github.com/otrv4/otrng-prekey-server.(*fileStorag

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GTK_VERSION=$(shell pkg-config --modversion gtk+-3.0 | tr . _ | cut -d '_' -f 1-2)
GTK_BUILD_TAG="gtk_$(GTK_VERSION)"
GIT_VERSION=$(shell git rev-parse HEAD)
TAG_VERSION=$(shell git tag -l --contains $$GIT_VERSION | tail -1)

BUILD_DIR=bin
BUILD_DIR_TIME=usr/bin/time

# This should be the default if we want to build the app when `go get`
#default: build

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Sage does not bluid itself correctly on High Sierra

------------------------------------------------------------------------
0   signals.so                          0x00000001055a1f85 print_backtrace + 37
------------------------------------------------------------------------
Unhandled SIGSEGV: A segmentation fault occurred.
This probably occurred because a *compiled* module has a bug
in it and is not properly wrapped with sig_on(), sig_off().
Python will now terminate.
------------------------------------------------------------------------

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panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x30 pc=0x4498489]

goroutine 373 [running]:
github.com/coyim/coyim/gui.isSelfPresence(...)
	/Users/sofia/go/src/github.com/coyim/coyim/gui/chat.go:497
github.com/coyim/coyim/gui.(*chatRoomView).updatePresence(0xc420081110, 0xc4200815f0)
	/Users/sofia/go/src/github.com/coyim/coyim/gui/chat.go:464 +0x79
github.com/coyim/coyim/gui.(*chatRoomView).watchEvents(0xc420081110, 0xc420290120)
	/Users/sofia/go/src/github.com/coyim/coyim/gui/chat.go:436 +0x34d

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## Configuration file for a typical Tor user
## Last updated 16 July 2009 for Tor 0.2.2.1-alpha.
## (May or may not work for much older or much newer versions of Tor.)
##
## Lines that begin with "## " try to explain what's going on. Lines
## that begin with just "#" are disabled commands: you can enable them
## by removing the "#" symbol.
##
## See 'man tor', or https://www.torproject.org/tor-manual.html,
## for more options you can use in this file.

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Improved Remote Pairing with Vim, Tmux and Tmate

Goals

• Spin up tmux sessions for each app automatically
• Have vim started in each tmux session
• Have a console successfully started for Rails apps, regardless of Rails version
• Tail the pow logs for Rails apps
• Start Ember server and test runner for Ember apps
• Maintain vim sessions automatically so vim is always "as we left it"

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{
   _gcry_rngcsprng_randomize
   Memcheck:Leak
   ...
   fun: rdrand_long
   ...
   fun: read_pool
   fun:_gcry_rngcsprng_randomize
}