tolgahanakgun

Server is tinydtls, compiled with both Raw Public Key and PSK support, version 0.8.6
psk_identity=Client_identity
psk_key=secretPSK
# psk in hex form
psk_key=73656372657450534b

# start tinydtls server
./dtls-server -v 6

# generate a secp256r1(prime256v1 or Nist 256-p) private and public key

tolgahanakgun

    "astyle.cmd_options": [
            "--style=allman", 
            "--indent=spaces=4",
            "--indent-col1-comments",
            "--pad-oper",
            "--pad-comma",
            "--pad-header",
            //"--style=1tbs",
            "--attach-extern-c",
            "--attach-closing-while",

tolgahanakgun

// C program to illustrate 
// non I/O blocking calls 
#include <string.h> 
#include <stdio.h> 
#include <stdlib.h>
#include <unistd.h> 
#include <fcntl.h> // library for fcntl function 
#define MSGSIZE 16 
char* msg1 ="hello"; 
char* msg2 ="bye !!"; 

tolgahanakgun

openssl req -new -x509 -nodes -newkey ec:<(openssl ecparam -name prime256v1) -keyout cert.key -out cert.crt -days 365

tolgahanakgun

# create a folder with name .duckdns in the current user
# fill the domain and token fields in the code below
# then create a file with name duck.py and copy the lines starting with #!/usr/bin/python3
# chmod +x duck.py
# then create an entry in crontab with the line below
# */15 * * * * ~/.duckdns/duck.py >> ~/.duckdns/cron.log 2>&1



#!/usr/bin/python3

tolgahanakgun

# list connections of a process by name
alias lsofproc='lsof -a -i -c'
# list all executables in a folder
alias lse='find . -maxdepth 1 -type f -executable'
# go one level directory up
alias ..='cd ..'
# go three level directory up
alias ...='cd ../../'
alias c='clear'
# untar a file

tolgahanakgun

#!/bin/bash

# download hosts file
wget -O /opt/adblock/hostfiles/someonewhocares.hosts https://someonewhocares.org/hosts/zero/hosts
wget -O /opt/adblock/hostfiles/winhelp2002.hosts http://winhelp2002.mvps.org/hosts.txt
wget -O /opt/adblock/hostfiles/tgccloud.hosts https://tgc.cloud/downloads/hosts.txt
wget -O /opt/adblock/hostfiles/stevensblack.hosts https://raw.githubusercontent.com/StevenBlack/hosts/master/hosts
wget -O /opt/adblock/hostfiles/hblock.hosts https://hblock.molinero.dev/hosts
wget -O /opt/adblock/hostfiles/spotify_x0uid_spotifyablock.hosts https://raw.githubusercontent.com/x0uid/SpotifyAdBlock/master/hosts
wget -O /opt/adblock/hostfiles/spotify_saminnet_spotify_adblock_script.hosts https://raw.githubusercontent.com/saminnet/spotify-adblock-script/master/block.txt

tolgahanakgun

#Lists the binary files which runs with privileged rights
find / -perm -u=s -type f 2>/dev/null



# add the lines below to .bashrc file for autostarting the ssh-agent and adding all the private keys in msys2
eval `ssh-agent -s` 1>/dev/null
find ~/.ssh/ -type f -exec grep -l "PRIVATE" {} \; | xargs ssh-add >/dev/null 2>&1

tolgahanakgun

Linux rock64 4.4.167-1213-rockchip-ayufan-g34ae07687fce #1 SMP Tue Jun 18 20:44:49 UTC 2019 aarch64 aarch64 aarch64 GNU/Linux
rock64@rock64:~$openssl speed -aead -evp aes-128-gcm
rock64@rock64:~$openssl speed -aead -evp aes-256-gcm
rock64@rock64:~$openssl speed -aead -evp chacha20-poly1305
type                    2 bytes     31 bytes    136 bytes   1024 bytes   8192 bytes   16384 bytes
----                    -------     --------    ---------   ----------   ----------   -----------
aes-128-gcm             2326.81k    29137.11k   108788.53k  360005.63k   482115.58k   492399.27k
aes-256-gcm             2256.78k    28163.19k   102470.97k  320374.44k   420995.35k   423843.16k
chacha20-poly1305       807.76k     11608.37k   32482.65k   129967.34k   167075.84k   169951.23k

tolgahanakgun

#include <stdio.h>

void dump_hex(const void *data, size_t size, char *output)
{
    char   ascii[17];
    size_t i, j;

    ascii[16] = '\0';
    for (i = 0; i < size; ++i)
    {