Re: Key entropy, stream entropy, block entropy, block population entropy AKA uniique stream length
 From: jt64@xxxxxxxx
 Date: 8 Feb 2007 09:34:44 0800
On 8 Feb, 18:05, Kristian Gjøsteen <kristiag+n...@xxxxxxxxxxxx> wrote:
<j...@xxxxxxxx> wrote:
There can
only be one stream for any key just as you say, but given a chosen
plaintext attack i do not beleive you can assert that you have the
first block in the keystream can you?
Of course you have the first part of the keystream. In a chosen plaintext
attack, you have the _entire_ key stream. That's in theory. In practice,
you typically know the start of the key stream because the start of the
message typically contains known or guessable plaintext.

Kristian Gjøsteen
OK, i agree you have the first part you know this area.
But that doesn't mean i have to use the first blocks of the PRNG
OUTPUT.
Jonas Thörnvall
.
 References:
 Key entropy, stream entropy, block entropy, block population entropy AKA uniique stream length
 From: jt64
 Re: Key entropy, stream entropy, block entropy, block population entropy AKA uniique stream length
 From: jt64
 Re: Key entropy, stream entropy, block entropy, block population entropy AKA uniique stream length
 From: John Hadstate
 Re: Key entropy, stream entropy, block entropy, block population entropy AKA uniique stream length
 From: jt64
 Re: Key entropy, stream entropy, block entropy, block population entropy AKA uniique stream length
 From: Kristian Gjøsteen
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