Create key's over 4096 bit ????

Ludwig Hügelschäfer mlisten at hammernoch.net
Thu Dec 22 11:41:19 CET 2005


On 22.12.2005 11:37 Uhr, Johan Wevers wrote:
> Atom Smasher wrote:
> 
>> a 1025 bit key (if there was such a thing) would be [merely] twice as 
>> strong as a 1024 bit key. a 1028 bit key would be 16 times stronger.
> 
> That is true for symmetric encryption, but not for the algorithms used
> for public key encryption since the attacs on RSA and ElGamal are better.

That's true. Even considering a brute force attack, 1025 bits is in
average only sqrt(2) better as 1024 bits.

Ludwig



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