Tuesday, February 19, 2008
When you think that every kid knows that XOR can not be used for that, you find that some smart Germans !!! ( wow !) use it for HD encryption ( 512 bit repeated key!!!)
Easy Nova Data Box PRO-25UE RFID
Funny thing it has sophisticated ( yeah, well) RFID controller and all these stuff, but do almost nothing to data protection.
When quantum computers and commuter arrays slowly making DES and other real cripto obsolete it is a revelation to see people use XOR.
Note: XOR is a very cool algorithm, btw, but here the catch : you need to have a "book" or say DVD of truly random noise and you have some how to send this with your message. If you use your key only once ( say you shift over you long book till it all used up) then it is absolutely unbreakable of course. But if you use same short key over data that can be "known" then it add no security at all and just a regular scrambling.
The scary thing is that it just saw lot about human stupidity or may be more about that some people do not give a shit about thing. When it is your data or money it is a bad thing, eh ... :-)
Easy Nova Data Box PRO-25UE RFID
Funny thing it has sophisticated ( yeah, well) RFID controller and all these stuff, but do almost nothing to data protection.
When quantum computers and commuter arrays slowly making DES and other real cripto obsolete it is a revelation to see people use XOR.
Note: XOR is a very cool algorithm, btw, but here the catch : you need to have a "book" or say DVD of truly random noise and you have some how to send this with your message. If you use your key only once ( say you shift over you long book till it all used up) then it is absolutely unbreakable of course. But if you use same short key over data that can be "known" then it add no security at all and just a regular scrambling.
The scary thing is that it just saw lot about human stupidity or may be more about that some people do not give a shit about thing. When it is your data or money it is a bad thing, eh ... :-)
Labels: XOR encription
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