AES and some more encryptions over IRC

_.markdown

AES over IRC

In this experiment i use Ruby and OpenSSL to create secure crypted conversations over irc.

• Uses key files
• Multiple users can chat together
• supports any decryption ssl supports

Those are viewable in the watch out for the "modules" variable. Note that note that not every OS/ssl version/installation has the same modul set

Yes, you need to modify the source to use it

AES_over_IRC.rb

#!/usr/bin/ruby

require 'socket'
require "base64"
require "open3"

server = "localhost"
port = "6667"
nick = "Nickname#{rand(5000)}"
channel = "#channel"
key = "hunter2"

def encrypt(text,key)
	ciphertext = ""
	Open3.popen2("gpg --symmetric --passphrase-fd 0 --batch --no-tty --logger-file /dev/null") {|stdin, stdout, wait|
		stdin.puts(key)
		stdin.puts(text)
		stdin.close()
		ciphertext = stdout.read()
	}
	return ciphertext
end

def decrypt(text,key)
	cleartext = ""
	Open3.popen2("gpg --decrypt --passphrase-fd 0 --batch --no-tty --logger-file /dev/null") {|stdin, stdout, wait|
		stdin.puts(key)
		stdin.write(text)
		stdin.close()
		cleartext = stdout.read()
	}
	return cleartext
end

$s = TCPSocket.open(server, port)
print("addr: ", $s.addr.join(":"), "\n")
print("peer: ", $s.peeraddr.join(":"), "\n")
$s.puts "USER testing 0 * Testing"
$s.puts "NICK #{nick}"
$s.puts "JOIN #{channel}"
$s.puts "PRIVMSG #{channel} :Hello from IRB Bot"

Thread.new {
until $s.eof? do
  msg = $s.gets
	msx = msg.split(" ")
	mse = msg.split("#{channel} :")[1]
	if msx[1] == "PRIVMSG"
		if mse.start_with?("[~]")
			mse = mse.gsub('[~]','').chomp()
			mse = Base64.urlsafe_decode64(mse);
			mse = decrypt(mse,key)
		end
		puts "> #{mse}"
	end
	if msx[1] == "396"
		$s.puts "JOIN #{channel}"
	end
end
}

while true
	inp = gets.chomp()
	inp = encrypt(inp,key)
	inp = Base64.urlsafe_encode64(inp);
	puts "| #{inp}"
	$s.puts "PRIVMSG #{channel} :[~]#{inp}"
end