Score:1

Extracting genome from a Ciphertext

tn flag
R1w

Is it Probable to extract the ciphertext's genome and Visualizing it ?

Converting this:

60AD5A78FB4A4030EC542C8974CD15F55384E836554CEDD9A322D5F4135C6267
A9D20970C54E6651070B0144D43844C899320DD8FA7819F7EBC6A7715287332E
C8675C136183B3F8A1F81EF969418267130A756FDBB2C71D9A667446E34E0EAD
9CF31BFB66F816F319D0B7E430A5F2891553986E003720261C7E9022C0D9F11F

To this:

ciphers genome

Encryption is like grinding the meat, once you grind the meat you can not look at the meat tissue and guess is it cow or lamb, but if you collect a sample of the tissue and look at it under the microscope you can have a good guess or identify that this meat has once belonged to a cow, what I am looking for is that, in the process of encryption, the clear text flows from a pipeline (algorithm) to a ciphertext that no one can reverse it or guess the original message but I hope there should be some pattern that if we could visualize the ciphertext we find characteristic of it, but in a very complex image, way like the human genome. I know all the process, all the effort the mathematician has done in past decades was to securing and making it irreversible without having the keys. after spending a good amount of time in research, I still have no improvements, in my hypothesis, but still looking there for some pattern that we could be found, something new in number Theory or an Oracle, something that we never looked for it.
P.S.It is not about a tool, it is about the idea and theory behind it.

kodlu avatar
sa flag
define genome. if there is an idea it is hard to tell. also you probably mean 'ciphertext' not cipher (the encoding scheme)
Maarten Bodewes avatar
in flag
A human genome is not randomized **on purpose** though, and a butcher will likely be able to guess the meat type without a microscope (color, smell, fat structures etc.), so there the analogies break down.
R1w avatar
tn flag
R1w
@MaartenBodewes what analogy would you choose, for comparing plaintext to ciphertext procedure?
Maarten Bodewes avatar
in flag
Well, maybe we can do without analogy here; I'm not sure that the internal structure of a (symmetric) cipher is present anywhere in nature.
Score:4
ng flag

I'll take the question as:

Is it possible to analyze ciphertext (encrypted with a large unknown key) and thus distinguish characteristics of the plaintext, like we can sequence minced meat and deduce information about the original meat?

Not for proper encryption. By definition of that, the only characteristic of the plaintext that can be distinguished from the ciphertext is size. Working meat analogy: mass. How can that be? A semi-working analogy would be that proper encryption minces down to 0/1 bits (proton/electron particles, in an hypothetical universe where that's the only two kinds).

Not all encryption is proper, though. For some kind of defective encryption, there are ways to find plaintext characteristics from ciphertext. E.g., for a cryptosystem combining poly-alphabetic substitution and transposition, we can find from the ciphertext the ratio of frequency of the most frequent to second most frequent plaintext symbols, because encryption conserves that quantity.

Also, encryption is proper with respect to a certain level of technology. Some ciphers that are proper against the unaided human brain are not against a computer. Some ciphers that are proper against classical computers might not be against quantum computers usable for cryptanalysis, that with enough imagination might become reality rather than hype.

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