security start

apps/trust.lua

@@ -0,0 +1,56 @@
+require = requireInjector(getfenv(1))
+local Socket = require('socket')
+local SHA1 = require('sha1')
+
+local remoteId
+local args = { ... }
+local exchange = {
+  base = 11,
+  primeMod = 625210769
+}
+
+if #args == 1 then
+  remoteId = tonumber(args[1])
+else
+  print('Enter host ID')
+  remoteId = tonumber(read())
+end
+
+if not remoteId then
+  error('Syntax: trust <host ID>')
+end
+
+print('Password')
+local password = read()
+
+print('connecting...')
+local socket = Socket.connect(remoteId, 19)
+
+if not socket then
+  error('Unable to connect to ' .. remoteId .. ' on port 19')
+end
+
+local function modexp(base, exponent, modulo)
+  local remainder = base
+
+  for i = 1, exponent-1 do
+    remainder = remainder * remainder
+    if remainder >= modulo then
+      remainder = remainder % modulo
+    end
+  end
+
+  return remainder
+end
+
+local secretKey = os.getSecretKey()
+local publicKey = modexp(exchange.base, secretKey, exchange.primeMod)
+
+socket:write({
+  password = SHA1.sha1(password),
+  publicKey = publicKey,
+})
+
+print(socket:read(2) or 'No response')
+
+socket:close()