56 lines
1.3 KiB
Lua
56 lines
1.3 KiB
Lua
local privkey_path = ".potatos_dsk"
|
|
if not fs.exists(privkey_path) then
|
|
error("Please save the potatOS disk signing key (ECC signing key) to " .. privkey_path .. " to use this program.")
|
|
end
|
|
|
|
local ecc = require "./ecc" "ecc"
|
|
|
|
local input, output, UUID_override = ...
|
|
local function fread(thing)
|
|
local f = fs.open(thing, "r")
|
|
local text = f.readAll()
|
|
f.close()
|
|
return text
|
|
end
|
|
|
|
local function hexize(key)
|
|
local out = ""
|
|
for _, v in pairs(key) do
|
|
out = out .. string.format("%.2x", v)
|
|
end
|
|
return out
|
|
end
|
|
|
|
local function unhexize(key)
|
|
local out = {}
|
|
for i = 1, #key, 2 do
|
|
local pair = key:sub(i, i + 1)
|
|
table.insert(out, tonumber(pair, 16))
|
|
end
|
|
return out
|
|
end
|
|
|
|
local function fwrite(fname, text)
|
|
local f = fs.open(fname, "w")
|
|
f.write(text)
|
|
f.close()
|
|
end
|
|
|
|
local pkey = unhexize(fread(privkey_path))
|
|
|
|
local UUID = ""
|
|
if UUID_override then UUID = UUID_override
|
|
else
|
|
for i = 1, 10 do
|
|
UUID = UUID .. string.char(math.random(97, 122))
|
|
end
|
|
end
|
|
|
|
print("UUID:", UUID)
|
|
|
|
local text = fread(input):gsub("@UUID@", UUID)
|
|
local signature = hexize(ecc.sign(pkey, text))
|
|
local fullcode = ([[---PXSIG:%s
|
|
---PXUUID:%s
|
|
%s]]):format(signature, UUID, text)
|
|
fwrite(output, fullcode) |