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I am currently experimenting with a concept for chat rooms using a combination of swarm feeds and pss. And right now an idea has come up of enabling “band changes” in the chat updates that only the participants will know of.

Here’s some background on swarm feeds if necessary: ethersphere/swarm#881 and ethersphere/swarm#1332

I’ll try to keep this simple, some constraints:

• We can exchange session public keys without outside entities associating them with identity used in initial discovery/connect.
• We assume peer discovery and service discovery exists.
• We assume we can promiscuously connect to pss nodes to send and receive in exchange for payment.
• Consensus between peers on who chatroom participants are is out of scope.

nolash

package main

import (
	"bytes"
	"crypto/ecdsa"
	"flag"
	"fmt"
	"io"
	"math/rand"
	"net"

nolash

package maparraybench

import (
	"fmt"
	"os"
	"testing"
)

const (
	itemCount = 100

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#include <stdio.h>
#include <sodium.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/stat.h>

#define SUBKEYS_COUNT 8
#define SUBKEYS_SIZE crypto_secretstream_xchacha20poly1305_KEYBYTES
#define SUBKEYS_CONTEXT "foo"

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package hasher

import (
	"encoding/binary"
	"math/rand"
	"strconv"
	"strings"
	"sync"
	"testing"

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#!/bin/bash

UID=$1
iptables -A OUTPUT -t mangle -m owner --uid-owner $UID -j MARK --set-mark 6
tc qdisc add dev enp2s0 root handle 1: htb default 30
tc class add dev enp2s0 parent 1: classid 1:1 htb rate 6mbit burst 15k
tc class add dev enp2s0 parent 1: classid 1:2 htb rate 1mbit burst 15k
tc filter add dev enp2s0 protocol ip parent 1:0 prio 1 handle 6 fw flowid 1:2

nolash

EMSCRIPTEN SETUP

https://github.com/juj/emsdk @ 2324e5d8

• LLVM_CMAKE_ARGS="-DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD=WebAssembly" emsdk install sdk-tag-1.37.28-64bit (be patient!)

To activate correct paths for emscripten and dependencies use:

• ./emsdk activate sdk-tag-1.37.28-64bit
• ./emsdk_env.sh

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package main

import (
	"bufio"
	"bytes"
	"flag"
	"fmt"
	"math/big"
	"os"
	"os/user"

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#!/bin/bash

function killswarm {
	kill -TERM $1
	exit 1
}

# take the newest key if none is given
function latest_key {
	echo -n `find $1/keystore -regex ".*--[a-fA-F0-9].*" | sort -r | head -n1 | sed -e 's/.*Z--\([a-fA-F0-9]*\)$/\1/g'`

nolash

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <openssl/rand.h>
#include <zlib.h>
#include <math.h>
#include <arpa/inet.h>
#include <sys/socket.h>
#include <sys/types.h>