interesting/uncommon cryptography methods and approaches?
Maligree
I'm looking for innovative, unusual, overlooked, amusing (choose one)
methods of encrypting information. These do not need to be extremely
safe or proven and preferably should not really be linked to tons of
mathematical concepts and deep black magic - this is for a relatively
small project (university work) and I'm hoping to find something that
goes away from the overused and - let's face it - boring algorithms.
Two things of the top of my head:
* steganography: encoding information in images and sound files is
pretty okay - but more interesting ones (e.g. Bacon's) are welcome
* deniable encryption: everything I've found on this subject so far is
pretty mathematical and .. well, lacking better words: boring.
Anything else?
My point is - if the concept is interesting enough, I do not need it
to be insanely reliable. The point of the project is to make people
think "wow, I that's interesting. I didn't know you could hide
information this way."
Thanks for your time, appreciate any replies.
LCC
By deniable, I presume you mean as in "nothing to see here, move along
now..."
How much information is to be encoded? For small quantities, there are
a plethora of techniques. For quantities >100 English language words,
the choice is less obvious.
You could for example consider distributing the information content
into different coded message streams, to disassociate the
information...
If there is no time pressure on transmittal of the information, you
could distribute information content through timed releases of code
blocks. Then unless all of the code blocks are intercepted, the
message would be indecipherable.
You could put the information in the form of logic chain mysteries/
riddles, so that persons unable to follow the logic chain would be
incapable of deciphering the message.
Let's hear what others might want to say before I feed you any more
helpful hints.
Lonnie Courtney Clay
Mok-Kong Shen
[snip]
>> * steganography: encoding information in images and sound files is
I initiated recently a thread "Non-conventional steganography" (06.11).
You are sincerely invited to contribute original ideas that eventually
could be developed for practical use.
M. K. Shen
Bryan
> I'm looking for innovative, unusual, overlooked, amusing (choose one)
> * steganography: encoding information in images and sound files is
> pretty okay - but more interesting ones (e.g. Bacon's) are welcome
> * deniable encryption: everything I've found on this subject so far is
> pretty mathematical and .. well, lacking better words: boring.
I nominate the spread spectrum file system, described by Howard Gayle
in a sci.crypt post of 26 June 1993, <20hqjs...@hal.com>. Multiple
messages with different keys use the same storage space, without any
coordination.
http://groups.google.com/group/sci.crypt/browse_frm/thread/d9f74f94622079ae/
Lev Dymchenko
Check out MDWP. http://www.virtualray.ru/mdwp/mdwp.html
It is very innovative, unusual, unconventional I can say. No known
attacks so far.
Phoenix
LCC
http://en.wikipedia.org/wiki/List_of_dialects_of_the_English_language
http://en.wikipedia.org/wiki/Slang
http://en.wikipedia.org/wiki/Jargon
http://en.wikipedia.org/wiki/Colloquialism
You could invent a new dialect, filled with slang, jargon, and
colloquial expressions…
Lonnie Courtney Clay
LCC
Cool Hand Luke - failure to communicate
Maybe a bit off topic, but might be in your future, if you run afoul
of the law...
Lonnie Courtney Clay
biject
Here is a simple way if you follow the example on the page
http://bijective.dogma.net/compres2bse.htm
in the example I took a simple message and changed it
in a way so that is almost looks like english
I took the simple message:
" I WILL SEE YOU AT NOON DO NOT TELL YOUR DAD"
and changed it to
"ATHEG SNCREVES N THAGLING IND RLYSHERAS MMOW HE S S IA"
When this is attacked by standard methods it will appear
to be some simple letter substitution but it's not.
It really is easy to break but only if your aware of this
exact method. Note at the last stage after UNARI2A.EXE
it always expands to english like text with capital
letters the spaces never at ends only in between the words
that are all capitals so you can hide these simple gems in a regular
message.
David A. Scott
--
My Crypto code
http://bijective.dogma.net/crypto/scott19u.zip
http://www.jim.com/jamesd/Kong/scott19u.zip old version
My Compression code http://bijective.dogma.net/
**TO EMAIL ME drop the roman "five" **
Disclaimer:I am in no way responsible for any of the statements
made in the above text. For all I know I might be drugged.
As a famous person once said "any cryptograhic
system is only as strong as its weakest link"
robert...@yahoo.com
JT
Using a single variablesized keyexpansion you can create multiple
***permutation*** tables that can be xored together creating a
keydependent CSPRNG stream cipher.
So suddenly you have a cipher where the keyspace is unknown, pretty
simple and totally fuck up any attempt of cipheranalyse.
JT
Mok-Kong Shen
> LCC<claylon...@comcast.net> wrote:
>> You could invent a new dialect, filled with slang, jargon, and
>> colloquial expressions…
>
> Actually implemented, of course:
>
> http://en.wikipedia.org/wiki/Codetalkers
And remember that there are natural languages (not counting dialects)
of the order of 6000, if I don't err, that are (yet!) alive. Dialects
could be very weired (there is at least one dialect of my mother tongue
that is "totally" incomprehensible to me, even though I am well familiar
with a few major dilects).
M. K. Shen
geremy condra
Interesting, non-mathematical, and uncommon?
1. Lamport signatures- http://en.wikipedia.org/wiki/Lamport_signature
2. the solitare cryptosystem- http://www.schneier.com/solitaire.html
Geremy Condra