Sony have changed its mind before and shown its true face. They have infected peoples computers on purpose as proved by the Sony rootkits, and they removed the ability to run GNU/Linux on playstations after the customers had bought them, rendering rendering-farms expensive junk.
They will change their mind again.
No one in MS or Sony have been jailed for any of their scams. They game the citizens with inpunity.
I knew someone that wrote rm -Rf * .o during his doctorate. The computer responded back that there were no .o files. This puzzled him as he had just compiled some software and were convinced that there would be a lot of those .o files.
Notice the extra space.
His line of thought were (erase, all of, the .o) files.
I believe in backup. It can be a real savior
4 bytes larger key gives more than 30 extra years;
1kB more gives several thousand extra years;
1MB more gives several million extra years;
before it is feasable to crack the key.
For good (symmetric) algorithms the strength doubles for each additional bit. This is true both for computing power and the size of look-up tables[http://en.wikipedia.org/wiki/Rainbow_table].
If computing power and RAM size doubles each year, 4 bytes gives 32 extra years before it is feasible to crack the key (because the key is 4.000.000.000 times stronger). It is one among many easy improvements one can make to significantly improve resilience. It is also a strong argument for longer pass-phrases.
For asymmetrical crypto the key must be longer (because the strength/bit is lower), but this isn't a problem as the key is both generated by a computer and used by a computer.
Proper end-user to end-user crypto use a combination of both. GnuPG use a new (one-time) symmetric key for each file you send; and it uses asymmetrical (personal) crypto to encrypt that key. This enables strangers to exchange information, and to send information to several different people that don't share the same personal asymmetrical key.
I presume that part of the reason citizens assume that governments respect their privacy when they use Internet to be at the same level as communication with letters, is that the governments really should.
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