Could encryption become obsolete?

The fear of every surveillance society: citizens protecting their own privacy with strong cryptography

Re: Could encryption become obsolete?

Post by not_essence2 on Sun Oct 28, 2012 5:08 pm
([msg=70469]see Re: Could encryption become obsolete?[/msg])

I can tell you it won't. RSA, the best cipher available, uses two huge (1000 digit) primes to make a key, and it involves modular addition (too complicated to explain right now). Using those primes, and a certain product of those primes, it creates an encryption key e and a decryption key d. e is given to everybody, as well as N (something else needed to encypt based on modular addition), and everybody can encrypt and send to the person with the decryption key, d. However, because modular addition is as it is, you can't get d from e. The only way is to analyze N, which is made from the two primes, and attempt to brute force by finding all possible primes. It is proven that brute force will take longer than the age of the universe. So no.
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