rc4 java c++ python php

A python implementation of the block cipher RC4

A small and insanely fast ARCFOUR (RC4) cipher implementation of Python

Implementation of the stream cipher - RC4 (Rivest Cipher 4) using both Python 2.x and 3.x

Crypto projects in python, e.g. Attacks to Vigenere, RSA, Telnet Protocol, Hip Replacement , Vernam cipher, Crack Zip Files, Encryptions RC4, Steganography, Feistel cipher, Superincreasing Knapsac, Elliptic Curve Cryptography, Diffie Hellman & EDF.

Python package for the RC4 algorithm

EXPERIMENTAL Verilog (and HLS, C++, Python, OpenCL) implementation of the RC4 stream cipher.

rc4 implementation via py3

#!/usr/bin/env bash PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:~/bin export PATH #=================================================================# # System Required: CentOS 6+, Debian 7+, Ubuntu 12+ # # Description: One click Install Shadowsocks-Python server # # Author: Teddysun <i@teddysun.com> # # Thanks: @clowwindy <https://twitter.com/clowwindy> # # Intro: https://teddysun.com/342.html # #=================================================================# clear echo echo "#############################################################" echo "# One click Install Shadowsocks-Python server #" echo "# Intro: https://teddysun.com/342.html #" echo "# Author: Teddysun <i@teddysun.com> #" echo "# Github: https://github.com/shadowsocks/shadowsocks #" echo "#############################################################" echo libsodium_file="libsodium-1.0.16" libsodium_url="https://github.com/jedisct1/libsodium/releases/download/1.0.16/libsodium-1.0.16.tar.gz" # Current folder cur_dir=`pwd` # Stream Ciphers ciphers=( aes-256-gcm aes-192-gcm aes-128-gcm aes-256-ctr aes-192-ctr aes-128-ctr aes-256-cfb aes-192-cfb aes-128-cfb camellia-128-cfb camellia-192-cfb camellia-256-cfb chacha20-ietf-poly1305 chacha20-ietf chacha20 rc4-md5 ) # Color red='\033[0;31m' green='\033[0;32m' yellow='\033[0;33m' plain='\033[0m' # Make sure only root can run our script [[ $EUID -ne 0 ]] && echo -e "[${red}Error${plain}] This script must be run as root!" && exit 1 # Disable selinux disable_selinux(){ if [ -s /etc/selinux/config ] && grep 'SELINUX=enforcing' /etc/selinux/config; then sed -i 's/SELINUX=enforcing/SELINUX=disabled/g' /etc/selinux/config setenforce 0 fi } #Check system check_sys(){ local checkType=$1 local value=$2 local release='' local systemPackage='' if [[ -f /etc/redhat-release ]]; then release="centos" systemPackage="yum" elif cat /etc/issue | grep -Eqi "debian"; then release="debian" systemPackage="apt" elif cat /etc/issue | grep -Eqi "ubuntu"; then release="ubuntu" systemPackage="apt" elif cat /etc/issue | grep -Eqi "centos|red hat|redhat"; then release="centos" systemPackage="yum" elif cat /proc/version | grep -Eqi "debian"; then release="debian" systemPackage="apt" elif cat /proc/version | grep -Eqi "ubuntu"; then release="ubuntu" systemPackage="apt" elif cat /proc/version | grep -Eqi "centos|red hat|redhat"; then release="centos" systemPackage="yum" fi if [[ ${checkType} == "sysRelease" ]]; then if [ "$value" == "$release" ]; then return 0 else return 1 fi elif [[ ${checkType} == "packageManager" ]]; then if [ "$value" == "$systemPackage" ]; then return 0 else return 1 fi fi } # Get version getversion(){ if [[ -s /etc/redhat-release ]]; then grep -oE "[0-9.]+" /etc/redhat-release else grep -oE "[0-9.]+" /etc/issue fi } # CentOS version centosversion(){ if check_sys sysRelease centos; then local code=$1 local version="$(getversion)" local main_ver=${version%%.*} if [ "$main_ver" == "$code" ]; then return 0 else return 1 fi else return 1 fi } # Get public IP address get_ip(){ local IP=$( ip addr | egrep -o '[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}' | egrep -v "^192\.168|^172\.1[6-9]\.|^172\.2[0-9]\.|^172\.3[0-2]\.|^10\.|^127\.|^255\.|^0\." | head -n 1 ) [ -z ${IP} ] && IP=$( wget -qO- -t1 -T2 ipv4.icanhazip.com ) [ -z ${IP} ] && IP=$( wget -qO- -t1 -T2 ipinfo.io/ip ) [ ! -z ${IP} ] && echo ${IP} || echo } get_char(){ SAVEDSTTY=`stty -g` stty -echo stty cbreak dd if=/dev/tty bs=1 count=1 2> /dev/null stty -raw stty echo stty $SAVEDSTTY } # Pre-installation settings pre_install(){ if check_sys packageManager yum || check_sys packageManager apt; then # Not support CentOS 5 if centosversion 5; then echo -e "$[{red}Error${plain}] Not supported CentOS 5, please change to CentOS 6+/Debian 7+/Ubuntu 12+ and try again." exit 1 fi else echo -e "[${red}Error${plain}] Your OS is not supported. please change OS to CentOS/Debian/Ubuntu and try again." exit 1 fi # Set shadowsocks config password echo "Please enter password for shadowsocks-python" read -p "(Default password: teddysun.com):" shadowsockspwd [ -z "${shadowsockspwd}" ] && shadowsockspwd="teddysun.com" echo echo "---------------------------" echo "password = ${shadowsockspwd}" echo "---------------------------" echo # Set shadowsocks config port while true do dport=$(shuf -i 9000-19999 -n 1) echo "Please enter a port for shadowsocks-python [1-65535]" read -p "(Default port: ${dport}):" shadowsocksport [ -z "$shadowsocksport" ] && shadowsocksport=${dport} expr ${shadowsocksport} + 1 &>/dev/null if [ $? -eq 0 ]; then if [ ${shadowsocksport} -ge 1 ] && [ ${shadowsocksport} -le 65535 ] && [ ${shadowsocksport:0:1} != 0 ]; then echo echo "---------------------------" echo "port = ${shadowsocksport}" echo "---------------------------" echo break fi fi echo -e "[${red}Error${plain}] Please enter a correct number [1-65535]" done # Set shadowsocks config stream ciphers while true do echo -e "Please select stream cipher for shadowsocks-python:" for ((i=1;i<=${#ciphers[@]};i++ )); do hint="${ciphers[$i-1]}" echo -e "${green}${i}${plain}) ${hint}" done read -p "Which cipher you'd select(Default: ${ciphers[0]}):" pick [ -z "$pick" ] && pick=1 expr ${pick} + 1 &>/dev/null if [ $? -ne 0 ]; then echo -e "[${red}Error${plain}] Please enter a number" continue fi if [[ "$pick" -lt 1 || "$pick" -gt ${#ciphers[@]} ]]; then echo -e "[${red}Error${plain}] Please enter a number between 1 and ${#ciphers[@]}" continue fi shadowsockscipher=${ciphers[$pick-1]} echo echo "---------------------------" echo "cipher = ${shadowsockscipher}" echo "---------------------------" echo break done echo echo "Press any key to start...or Press Ctrl+C to cancel" char=`get_char` # Install necessary dependencies if check_sys packageManager yum; then yum install -y python python-devel python-setuptools openssl openssl-devel curl wget unzip gcc automake autoconf make libtool elif check_sys packageManager apt; then apt-get -y update apt-get -y install python python-dev python-setuptools openssl libssl-dev curl wget unzip gcc automake autoconf make libtool fi cd ${cur_dir} } # Download files download_files(){ # Download libsodium file if ! wget --no-check-certificate -O ${libsodium_file}.tar.gz ${libsodium_url}; then echo -e "[${red}Error${plain}] Failed to download ${libsodium_file}.tar.gz!" exit 1 fi # Download Shadowsocks file if ! wget --no-check-certificate -O shadowsocks-master.zip https://github.com/shadowsocks/shadowsocks/archive/master.zip; then echo -e "[${red}Error${plain}] Failed to download shadowsocks python file!" exit 1 fi # Download Shadowsocks init script if check_sys packageManager yum; then if ! wget --no-check-certificate https://raw.githubusercontent.com/teddysun/shadowsocks_install/master/shadowsocks -O /etc/init.d/shadowsocks; then echo -e "[${red}Error${plain}] Failed to download shadowsocks chkconfig file!" exit 1 fi elif check_sys packageManager apt; then if ! wget --no-check-certificate https://raw.githubusercontent.com/teddysun/shadowsocks_install/master/shadowsocks-debian -O /etc/init.d/shadowsocks; then echo -e "[${red}Error${plain}] Failed to download shadowsocks chkconfig file!" exit 1 fi fi } # Config shadowsocks config_shadowsocks(){ cat > /etc/shadowsocks.json<<-EOF { "server":"0.0.0.0", "server_port":${shadowsocksport}, "local_address":"127.0.0.1", "local_port":1080, "password":"${shadowsockspwd}", "timeout":300, "method":"${shadowsockscipher}", "fast_open":false } EOF } # Firewall set firewall_set(){ echo -e "[${green}Info${plain}] firewall set start..." if centosversion 6; then /etc/init.d/iptables status > /dev/null 2>&1 if [ $? -eq 0 ]; then iptables -L -n | grep -i ${shadowsocksport} > /dev/null 2>&1 if [ $? -ne 0 ]; then iptables -I INPUT -m state --state NEW -m tcp -p tcp --dport ${shadowsocksport} -j ACCEPT iptables -I INPUT -m state --state NEW -m udp -p udp --dport ${shadowsocksport} -j ACCEPT /etc/init.d/iptables save /etc/init.d/iptables restart else echo -e "[${green}Info${plain}] port ${shadowsocksport} has already been set up." fi else echo -e "[${yellow}Warning${plain}] iptables looks like shutdown or not installed, please manually set it if necessary." fi elif centosversion 7; then systemctl status firewalld > /dev/null 2>&1 if [ $? -eq 0 ]; then firewall-cmd --permanent --zone=public --add-port=${shadowsocksport}/tcp firewall-cmd --permanent --zone=public --add-port=${shadowsocksport}/udp firewall-cmd --reload else echo -e "[${yellow}Warning${plain}] firewalld looks like not running or not installed, please enable port ${shadowsocksport} manually if necessary." fi fi echo -e "[${green}Info${plain}] firewall set completed..." } # Install Shadowsocks install(){ # Install libsodium if [ ! -f /usr/lib/libsodium.a ]; then cd ${cur_dir} tar zxf ${libsodium_file}.tar.gz cd ${libsodium_file} ./configure --prefix=/usr && make && make install if [ $? -ne 0 ]; then echo -e "[${red}Error${plain}] libsodium install failed!" install_cleanup exit 1 fi fi ldconfig # Install Shadowsocks cd ${cur_dir} unzip -q shadowsocks-master.zip if [ $? -ne 0 ];then echo -e "[${red}Error${plain}] unzip shadowsocks-master.zip failed! please check unzip command." install_cleanup exit 1 fi cd ${cur_dir}/shadowsocks-master python setup.py install --record /usr/local/shadowsocks_install.log if [ -f /usr/bin/ssserver ] || [ -f /usr/local/bin/ssserver ]; then chmod +x /etc/init.d/shadowsocks if check_sys packageManager yum; then chkconfig --add shadowsocks chkconfig shadowsocks on elif check_sys packageManager apt; then update-rc.d -f shadowsocks defaults fi /etc/init.d/shadowsocks start else echo echo -e "[${red}Error${plain}] Shadowsocks install failed! please visit https://teddysun.com/342.html and contact." install_cleanup exit 1 fi clear echo echo -e "Congratulations, Shadowsocks-python server install completed!" echo -e "Your Server IP : \033[41;37m $(get_ip) \033[0m" echo -e "Your Server Port : \033[41;37m ${shadowsocksport} \033[0m" echo -e "Your Password : \033[41;37m ${shadowsockspwd} \033[0m" echo -e "Your Encryption Method: \033[41;37m ${shadowsockscipher} \033[0m" echo echo "Welcome to visit:https://teddysun.com/342.html" echo "Enjoy it!" echo } # Install cleanup install_cleanup(){ cd ${cur_dir} rm -rf shadowsocks-master.zip shadowsocks-master ${libsodium_file}.tar.gz ${libsodium_file} } # Uninstall Shadowsocks uninstall_shadowsocks(){ printf "Are you sure uninstall Shadowsocks? (y/n) " printf "\n" read -p "(Default: n):" answer [ -z ${answer} ] && answer="n" if [ "${answer}" == "y" ] || [ "${answer}" == "Y" ]; then ps -ef | grep -v grep | grep -i "ssserver" > /dev/null 2>&1 if [ $? -eq 0 ]; then /etc/init.d/shadowsocks stop fi if check_sys packageManager yum; then chkconfig --del shadowsocks elif check_sys packageManager apt; then update-rc.d -f shadowsocks remove fi # delete config file rm -f /etc/shadowsocks.json rm -f /var/run/shadowsocks.pid rm -f /etc/init.d/shadowsocks rm -f /var/log/shadowsocks.log if [ -f /usr/local/shadowsocks_install.log ]; then cat /usr/local/shadowsocks_install.log | xargs rm -rf fi echo "Shadowsocks uninstall success!" else echo echo "uninstall cancelled, nothing to do..." echo fi } # Install Shadowsocks-python install_shadowsocks(){ disable_selinux pre_install download_files config_shadowsocks if check_sys packageManager yum; then firewall_set fi install install_cleanup } # Initialization step action=$1 [ -z $1 ] && action=install case "$action" in install|uninstall) ${action}_shadowsocks ;; *) echo "Arguments error! [${action}]" echo "Usage: `basename $0` [install|uninstall]" ;; esac

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