Place Passwords in arrays with encryption

[BartekB]

Hi! I was thinking to make a password feature to a future-level editor, but how? How would I make it encrypted?

The Xs, Ys and Zs are used by the tiles in the level. (So I have no space for the password to go to)
And the password / string has to be encrpyted somehow.

Is it possible?

[UrbanMonk]

Yes it's possible.
I would hash the password and store it in the level file. Then if you really must encrypt it you can use the blowfish object.

But what's the purpose of encrypting the levels? I would leave them unencrypted. It's extra trouble for something that isn't really worth it.
You could just change the file extension to something like ".dat" and most users wouldn't touch them.

[BartekB]

I just want to encrypt the password for story Levels cause they shall not be touched for several reasons:
+They can edit the level to make it easier
+They can make achievements eaiser to get

EDIT: There will be also a Custom Levels option to play your own levels there. As the story ones they will have passwords to block people from editing it.

[UrbanMonk]

Are you worried that the users will use an outside tool to modify the levels?
Encryption isn't needed if you just want to stop them from using your editor to change them.

Instead of encrypting the levels I suggest you just hash the level data and store it in the level file.
Every time the level is loaded rehash it and compare. If the hash doesn't match then the game will know the level was modified.

Make sure to add a salt to keep users from just recreating a new hash themselves.

[BartekB]

Ah I see, Thanks UrbanMonk!