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What is digram analysis?

ru flag

so I wanted to ask something since I just learned about cryptography. Here where I have the task to write an essay on cryptography and the title I have to do is introduction digram analysis. However, I did not find any information about digram analysis. What I know is this digram analysis is used on stream and block ciphers. Can anyone explain in more detail what is digram analysis? are Bigram and Digram the same thing? If there is a reference I would appreciate it more. I'm not sure it's digram or diagram analysis.

I hope you guys can explain to me just a little bit so that i understand about this since i didn't find about this.

Maarten Bodewes avatar
in flag
https://en.wikipedia.org/wiki/Bigram: Bigram frequency attacks can be used in cryptography to solve cryptograms. See frequency analysis.
kimkim avatar
ru flag
Hello @MaartenBodewes, so what's do you mean is that digram analysis is frequency analysis ?
Maarten Bodewes avatar
in flag
Can't think of anything else to be honest. However, frequency analysis is more about classical ciphers than modern block or stream ciphers.
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