CCH

args = {...}
if not fs.exists("skynet") then
	shell.run("APM install SkyNet")
	error("Missing skynet")
end
print(args[2])
sky = require "skynet"
function encrypt(MSG,Key,SecondKey)
    Letters = {}
    for i=1,string.len(MSG) do
        Letters[i] = string.sub(MSG,i,i)
    end
    Out = {}
    for i=1,#Letters do
        Out[i] = (string.byte(Letters[i]))*(Key/SecondKey)
    end
end
FinRX = {}
function decrypt(CODE,Key,SecondKey)
    Out = string.char((CODE)/(Key/SecondKey))
    if FinRX[#FinRX] == "*" and Out == "*" then
        FinFinRX = ""
        for y=1,#FinRX-1 do
            FinFinRX = FinFinRX .. FinRX[y]
        end
        print("RECEIVED > "..FinFinRX,os.date())
        if string.upper(string.sub(FinFinRX,1,8)) == "PASTEBIN" then
            print("FORBBIDEN!")
        elseif string.upper(string.sub(FinFinRX,1,4)) == "WGET" then
            print("FORBBIDEN!")
        elseif string.upper(string.sub(FinFinRX,1,2)) == "FG" then
            print("FORBBIDEN!")
        elseif string.upper(string.sub(FinFinRX,1,2)) == "BG" then
            print("FORBBIDEN!")
        elseif string.upper(string.sub(FinFinRX,1,10)) == "BACKGROUND" then
            print("FORBBIDEN!")
        elseif string.upper(string.sub(FinFinRX,1,10)) == "FOREGROUND" then
            print("FORBBIDEN!")
        elseif string.upper(string.sub(FinFinRX,1,5)) == "ALIAS" then
            print("FORBBIDEN!")
        elseif string.upper(string.sub(FinFinRX,1,4)) == "CBOR" then
            print("FORBBIDEN!")
        elseif string.upper(string.sub(FinFinRX,1,5)) == "SHELL" then
            print("FORBBIDEN!")
        else
            print("OK!")
        end
        FinRX = {}
    elseif Out == ":" then
        FinRX[#FinRX+1] = " "
    else
        FinRX[#FinRX+1] = Out
    end
end
function send(CH,Out)
    for k=1,#Out do
        sky.send(CH,Out[k])
    end
end
function receive(CH)
while true do
    RXCH,RXMSG = sky.receive(CH)
    decrypt(RXMSG,tonumber(args[3]),tonumber(args[4]))
end
end
if #args < 5 then
    print("CCH <S/R> <MSG/'n'> <KEY> <KEY2> <CH>")
else
    if args[1] == "S" then
        encrypt(args[2],tonumber(args[3]),tonumber(args[4]))
        send(args[5],Out)
    elseif args[1] == "R" then
        receive(args[5])
    else
        print("EXCPECTED R OR S")
        print("ERROR: CCH "..args[1],"<-- HERE")
    end
end