Lua vs PHP随机数[关闭]

Question

I have a lua script that encrypts a string and sends it via http to a PHP script. Problem is, the encryption process uses Lua's math.randomseed and math.random. When trying to decrypt the string in PHP, mt_srand and mt_rand produce different numbers than Lua did.

How can I get php to generate numbers like Lua?

-- Edit

Ok, so in my (very simple) encryption I'm using a key to generate a seed. That seed lets me get back the same "random number" each time.

So if my key produces a seed of say, 80 and I use this in Lua...

math.randomseed(80)
local randomNumber = math.random(1, 20)
// randomNumber = 3

When trying to decrypt in PHP, I'll use the same seed but I get a different output.

mt_srand(80);
$randomNumber = mt_rand(1, 20);
// $randomNumber = 10

I need to figure out a way to get back the same number so that I'm able to decrypt the string.

Answer 1

You need a random-number-generator which use the same algorithm on php and lua.

Either you find an random-number-generator for Lua and one for PHP which has the same implementation, or you must programm your own one. Moreover, using of system intern generators are also bad, because they can change everytime, and then your script also no longer works.