[Cryptography] A software for combining text files to obtain high quality pseudo-random sequences in practice

mok-kong shen mok-kong.shen at t-online.de
Tue Jul 11 05:04:03 EDT 2017


Am 11.07.2017 um 08:50 schrieb Tom Mitchell:
> It may have value for simple minded generation of one time pads
> using common shared books.
> Pseudo random has applications when a sender and receiver wish to
> synchronize based on a shared seed secret.  In this case five page numbers
> of a book (ebook), OCR...
> Knowing the five pages allows decoding, to expose the sixth (message).
>
> Seems interesting for friendly communication between 'lovers' but not nations.
> Evangeline A Tale of Acadie - Henry Wadsworth Longfellow would be long
> enough for most summer romances.
> Now I am curious if the rhyme and meter of poetry helps or hinders.
> http://www.gutenberg.org/cache/epub/2039/pg2039.txt
My knowledge is poor  and I am naturally biased in the current context. 
On the other hand,
since there exist nowadays a really huge number of books (or equivalent 
text sources),
if the titles of the books and the starting points are unknown, I 
couldn't yet see a sensible
way to proceed to break it, if I could have the entire processing power 
of one of the top
500 supercomputers available which, though huge, is nontheless 
relatively limited.

M. K. Shen


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