度娘告诉我，lua是用标准C语言编写的，所以就来这个论坛求助了好人一生平安
目的：这是一个卡密系统（GG源码），我想使用RC4加密，不然一个黄鸟就破了，应该怎么修改代码？

app="10000"

function Main()
KS = gg.choice({
      "[卡密]",
      "[退出脚本]"}, nil)
if KS == nil then
else
if KS == 1 then
danma()
end
end
if KS == 2 then
os.exit()
end
FX1 = -1
end
local user,kmfile="http://abc.lhnnb.cf/",gg.EXT_STORAGE..'/.km'
function Cx_(co)res=''for i in ipairs(co)do res=res..string.char(co[i]) end return res end function danma(km)
reg=gg.prompt({
    Cx_({229,141,161,229,175,134}),
  }, {
    '',
  }, {
    Cx_({116,101,120,116}),
  })
XGCK=-1
if reg==nil then
gg.alert(Cx_({231,187,136,230,173,162,231,168,139,229,186,143}))
os.exit()
end

local userreg=gg.makeRequest(user..Cx_({47,97,112,105,46,112,104,112,63,97,99,116,61,107,109,95,108,111,103,111,110,38,97,112,112,61})..app..Cx_({38,107,97,109,105,61})..reg[1]).content
if userreg then
local userreg,code=gg.makeRequest(user).content,userreg:match(Cx_({99,111,100,101,34,58,40,37,100,43,41}))
if code==Cx_({49,52,57})then
gg.alert(Cx_({229,141,161,229,175,134,228,184,141,229,173,152,229,156,168}))
    io.open(kmfile, Cx_({119}))
    io.open(kmfile,Cx_({119})):write(reg[1]):close()
while(code)do
if gg.isVisible() then gg.setVisible(false) XGCK=1 end
if XGCK==1 then
danma()
end
end
end
if code==Cx_({49,48,49})then
gg.alert(Cx_({231,148,168,230,136,183,228,184,141,229,173,152,229,156,168}))
    io.open(kmfile, Cx_({119}))
    io.open(kmfile,Cx_({119})):write(reg[1]):close()
while(code)do
if gg.isVisible() then gg.setVisible(false) XGCK=1 end
if XGCK==1 then
danma()
end
end
end
if code==Cx_({52,48,51})then
gg.alert(Cx_({117,117,105,100,230,156,170,229,161,171,229,134,153,47,228,184,141,230,173,163,231,161,174}))
    io.open(kmfile, Cx_({119}))
    io.open(kmfile,Cx_({119})):write(reg[1]):close()
while(code)do
if gg.isVisible() then gg.setVisible(false) XGCK=1 end
if XGCK==1 then
danma()
end
end
end
if code==Cx_({50,48,48})then
gg.alert(Cx_({230,191,128,230,180,187,230,136,144,229,138,159}))
    io.open(kmfile, Cx_({119}))
    io.open(kmfile,Cx_({119})):write(reg[1]):close()
while(code)do
if gg.isVisible() then gg.setVisible(false) XGCK=1 end
if XGCK==1 then
Main0()
end
end
end
end
end
function Main0()
SN = gg.choice({
     "进入功能",
     "退出脚本",
}, nil, "老挂b是银汉的父亲")
if SN==1 then
     Main10()
end
if SN==2 then
     HS8()
end
FX1=0
end

function Main10()
SN = gg.choice({
     "1",
     "1",
     "1",
     "1",
     "1",
     "1",
}, nil, "")
if SN==1 then
     HS11()
end
if SN==2 then
     HS12()
end
if SN==3 then
     HS13()
end
if SN==4 then
     HS14()
end
if SN==5 then
     HS15()
end
if SN==6 then
     HS16()
end
FX1=0
end

function HS11()
     gg.clearResults()
     gg.setRanges(4)
     gg.searchNumber("11D;1;3D;7D;2D::150", gg.TYPE_DOUBLE, false, gg.SIGN_EQUAL, 0, -1)
     gg.searchNumber("1", gg.TYPE_DOUBLE, false, gg.SIGN_EQUAL, 0, -1)
     jg=gg.getResults(100)
     sl=gg.getResultCount()
     for i = 1, sl do
          dzy=jg[i].address
          gg.addListItems({[1] = {address = dzy,flags = gg.TYPE_DOUBLE,freeze = true,value = -10}})
     end
     gg.toast("修改成功")
     gg.clearResults()
end

function HS12()
     gg.clearResults()
     gg.setRanges(4)
     gg.searchNumber("5D;3;3D;2D;2;3D;1;3D;4D;6D;4D;4D;1::", gg.TYPE_DOUBLE, false, gg.SIGN_EQUAL, 0, -1)
     gg.searchNumber("1", gg.TYPE_DOUBLE, false, gg.SIGN_EQUAL, 0, -1)
     jg=gg.getResults(100)
     sl=gg.getResultCount()
     for i = 1, sl do
          dzy=jg[i].address
          gg.addListItems({[1] = {address = dzy,flags = gg.TYPE_DOUBLE,freeze = true,value = 2}})
     end
     gg.toast("2")
     gg.clearResults()
end

function HS13()
     gg.clearResults()
     gg.setRanges(4)
     gg.searchNumber("6D;4D;1;3D;4D;6D;4D;1;3D;4D;6D;4D;1;3D;4D:180", gg.TYPE_DOUBLE, false, gg.SIGN_EQUAL, 0, -1)
     gg.searchNumber("1", gg.TYPE_DOUBLE, false, gg.SIGN_EQUAL, 0, -1)
     jg=gg.getResults(100)
     sl=gg.getResultCount()
     for i = 1, sl do
          dzy=jg[i].address
          gg.addListItems({[1] = {address = dzy,flags = gg.TYPE_DOUBLE,freeze = true,value = 10}})
     end
     gg.toast("2")
     gg.clearResults()
end

function HS14()
     gg.clearResults()
     gg.setRanges(4)
     gg.searchNumber("4;1000;3D;4D;4D;4D;4D;4D;4D;4D;4D;4D;1;3D;4D;1D::", gg.TYPE_DOUBLE, false, gg.SIGN_EQUAL, 0, -1)
     gg.searchNumber("1", gg.TYPE_DOUBLE, false, gg.SIGN_EQUAL, 0, -1)
     jg=gg.getResults(100)
     sl=gg.getResultCount()
     for i = 1, sl do
          dzy=jg[i].address
          gg.addListItems({[1] = {address = dzy,flags = gg.TYPE_DOUBLE,freeze = true,value = -1}})
     end
     gg.toast("2")
     gg.clearResults()
end

function HS15()
     gg.clearResults()
     gg.setRanges(4)
     gg.searchNumber("1;3D;3D;1D;4D;4D;4D;4D;4D;4D;2;3D;4D;4D;4D;60::", gg.TYPE_DOUBLE, false, gg.SIGN_EQUAL, 0, -1)
     gg.searchNumber("1", gg.TYPE_DOUBLE, false, gg.SIGN_EQUAL, 0, -1)
     jg=gg.getResults(100)
     sl=gg.getResultCount()
     for i = 1, sl do
          dzy=jg[i].address
          gg.addListItems({[1] = {address = dzy,flags = gg.TYPE_DOUBLE,freeze = true,value = 200}})
     end
     gg.toast("2")
     gg.clearResults()
end

function HS16()
     gg.clearResults()
     gg.setRanges(4)
     gg.searchNumber("104;3;316;4;1575::", gg.TYPE_DOUBLE, false, gg.SIGN_EQUAL, 0, -1)
     gg.searchNumber("4", gg.TYPE_DOUBLE, false, gg.SIGN_EQUAL, 0, -1)
     jg=gg.getResults(100)
     sl=gg.getResultCount()
     for i = 1, sl do
          dzy=jg[i].address
          gg.addListItems({[1] = {address = dzy,flags = gg.TYPE_DOUBLE,freeze = true,value = 0}})
     end
     gg.toast("2")
     gg.clearResults()
end

function HS8()
     os.exit()
end



while true do
if gg.isVisible(true) then
    FX1 = nil
    gg.setVisible(false)
  end
  if FX1 == nil then
    Main()
  end
end