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messenger: better key management commands

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rnd 2018-05-17 10:09:46 +02:00
parent f6855cb731
commit 138907cb15
1 changed files with 16 additions and 13 deletions
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29
scripts/messenger_v2.lua
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@ -4,15 +4,16 @@
-- Every session key is randomized and securely exchanged with srp (secure remote password) like protocol.
if not init then
msgerver = "05162018b"
msgerver = "05172018a"
targetid = {id = "qtest", name = "qtest"} -- real identity & playername
myid = {id = "rnd", name = minetest.localplayer:get_name()}
targetid = {id = "qtest", name = "qtest"} -- WHO you want to talk to - real identity & playername
myid = {id = "rnd", name = minetest.localplayer:get_name()} -- your identity
-- targetid = {id = "rnd", name = "rnd"} -- real identity & playername
-- myid = {id = "qtest", name = minetest.localplayer:get_name()}
keygen = 0; -- both players set this to 1 to generate keys, 0 normal operation
------------------------------------------------------
DEBUG = false;
-- SECRET KEYS: for yourself write in: private key, public key. for other player write {} in place of private key.
@ -25,10 +26,8 @@ if not init then
-- },
-- }
------------------------------------------------------
timeout = 5;
keygen = 0; -- both players set this to 1 to generate keys, 0 normal operation
timeout = 5; -- unused (yet)
chatchar1 = "''";
chatchar0 = ": ";
self.msg_filter(targetid.name .. chatchar0 .. chatchar1) -- PM from name to name: @@xxxx
@ -39,9 +38,9 @@ if not init then
welcomemsg = function()
if keygen == 1 then
say(minetest.colorize("red", "#MESSENGER v" .. msgerver .. ". hold w+s to generate and (2048 bit) securely exchange private/public key or wait to receive one. say ,keys to view existing keys and ,deletekeys to delete all keys."))
say(minetest.colorize("red", "#MESSENGER v" .. msgerver .. ". hold w+s to generate and exchange private/public key or wait to receive one. say ,1 to view existing keys and ,2 to delete all keys."))
else
say(minetest.colorize("red", "#MESSENGER v" .. msgerver .. ". hold w+s to establish authenticated secure connection with " .. targetid.id .. " or wait to receive one."))
say(minetest.colorize("red", "#MESSENGER v" .. msgerver .. ". hold w+s to establish authenticated secure connection with " .. targetid.id .. " or wait to receive one.say ,1 to enter key management."))
end
end
welcomemsg()
@ -245,11 +244,11 @@ if keygen == 1 then -- generating & exchanging 'public' key for one of the clien
end
msg = self.sent_msg();
if msg then
if msg == "keys" then
if msg == "1" then
msg = minetest.serialize(keys)
local form = "size[10.5,10] textarea[0,0;11,12;MSG;KEYS;" .. minetest.formspec_escape(msg) .. "]"
minetest.show_formspec("robot", form);
elseif msg == "deletekeys" then
elseif msg == "2" then
keys = {};
self.mod_storage:set_string("messenger_keys", "return {}")
say("ALL KEYS DELETED!")
@ -408,7 +407,7 @@ if keygen == 1 then -- generating & exchanging 'public' key for one of the clien
elseif minetest.localplayer:get_key_pressed() == 3 then
say(minetest.colorize("red","GENERATING challenge and sending it to " .. targetid.name))
local key = keys[targetid.id];
if not key or not key[2] then say("ERROR: you need to add public key for " .. targetid.id..". put keygen = 1 and let " .. myid.id .. " hold w+s."); self.remove() end
if not key or not key[2] then say("ERROR: you need to add public key for " .. targetid.id..". put keygen = 1 and let " .. targetid.id .. " hold w+s."); self.remove() end
local base = 2^26; local m = 20;
local v = bignum.new(base,1,key[2]);
local r = bignum.rnd(base, 1, m)
@ -426,6 +425,10 @@ if keygen == 1 then -- generating & exchanging 'public' key for one of the clien
--response = crypto.rndhash(table.concat(sessionkey,"'"),512) -- OPTIONAL
state = 1; -- normal operation
end
msg = self.sent_msg();
if msg and msg == "1" then
keygen = 1; welcomemsg()
end
end
elseif state == 1 then
if msg then -- received message + decrypt it