Hashing Small Amounts Of Text (Sha-1, Sha-2, Md5, Etc.)

I'm planning to send passwords over wireless rednet, but I know some one can sniff the net for what I'm sending with some work. I wish to make it a bit harder, think md5(password+someThingTimeBased()+"aReallyNastySalt"). How ever, said functions don't exist in ComputerCraft's lua implementation and most implementations use C libraries or don't work. Will have to work with out luajava and http APIs. Anyone know of one?


Edit: Well never mind. Stupid me. Had a file extension on it. os.loadAPI() does not like that. Used this, has both SHA-1 and HMAC-SHA1 in it as sha1('text') and hmac_sha1('key','text')

Spice-King, on 26 February 2012 - 04:21 AM said:

I'm planning to send passwords over wireless rednet, but I know some one can sniff the net for what I'm sending with some work. I wish to make it a bit harder, think md5(password+someThingTimeBased()+"aReallyNastySalt"). How ever, said functions don't exist in ComputerCraft's lua implementation and most implementations use C libraries or don't work. Will have to work with out luajava and http APIs. Anyone know of one?

I don't know about md5 but my String Utils API has a sha1 hashing function.

tomass1996, on 26 February 2012 - 04:51 AM said:

Spice-King, on 26 February 2012 - 04:21 AM said:

I'm planning to send passwords over wireless rednet, but I know some one can sniff the net for what I'm sending with some work. I wish to make it a bit harder, think md5(password+someThingTimeBased()+"aReallyNastySalt"). How ever, said functions don't exist in ComputerCraft's lua implementation and most implementations use C libraries or don't work. Will have to work with out luajava and http APIs. Anyone know of one?

I don't know about md5 but my String Utils API has a sha1 hashing function.

Oh, sweet. Lost of stuff to use in there. This will make it hard to find out the passwords, thanks! Don't know how I missed it.

If you're using modems instead of bundled cable, I believe nobody can sniff the network because packets are shovelled from sender directly to recipient through native Java code rather than ever actually passing through the world.