3 recommendations  reply to texans20
Re: I Don't understand encryption The easiest way to think of encryption is to think of it as a math equation.
Take y=x*2.
In this example:  x is the information we want to encrypt,  y is the encrypted information  *2 'encryption algorithm.'
So, if I needed to send you the number 5 > y=5*2 > y=10. Obviously, to decrypt the message, you simply use the equation x=y/2 > x=10/2 > x=5.
In this example, if the hacker doesn't know the encryption method, we are safe. However, once he figures out we are simply multiplying by two, the hacker has cracked our encryption scheme. As such, the hacker would be attacking the encryption scheme. Needless to say, this method of encryption isn't very secure. So, we can make it slightly harder by changing the encryption equation to:
y=x*c  x is the information we want to encrypt  y is the encrypted information  multiplication is the encryption algorithm  c is the password (or key)
This method is more robust because we can change the value of c each time we send information. Obviously, we have to agree upon what c will be before hand. In this example, the hacker can figure out our encryption scheme (multiplication) but that knowledge is useless to him if he doesn't know what c is. However, depending on how large a number c is, it may not take long for the hacker to simply correctly guess what c is. In this case, the hacker would be attacking the encryption key.
In the real world, the encryption algorithms are more complex and the keys (passwords) are also much more complex, but the basic principle should hold true. Most encryption algorithms are open so that anyone can critique them and ensure there isn't a fundamental flaw in the algorithm. A flawed encryption algorithm would be one where simply having the knowledge of the algorithm would allow the hacker to crack the information.
Since most encryption algorithms in use today are very robust, hackers attack the keys (passwords) that are used to encrypt the information. As I understand it, this is what happened in this news story. The keys used to encrypt the content on the HDDVDs and Blueray Discs has been discovered, which should allow anyone to decrypt the information.
Hope this helps. 
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2 recommendations  reply to dadkins
Re: YAY! said by dadkins:So, where's my AnyBD driver? Still though, at 2550GB per movie... freakin HUGE ass files! This is why I am greatful for the available access to bonded T1s near my area.  "I have measured out my life with coffee spoons..."  T.S Eliot Ma Blog »www.johndball.com
