Introduction to Basic Cryptography: Simple Cryptography

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Man made it - man can break it... eventually everything gets broken 👹👹👹
Very good explanation, good work doc.

doc.steveo

very informative, well presented thank you so much

diniibrahim

Thank you for your explanation it is brief and understand

Romanx

Teaching is definitely your gift. Thank you!!

leahdereka

thank u for this education in cryptography, Mr Riley.

sophiainjoy

By that logic, you would want to create a cipher where the pattern is not detectable?

BambiOnIce

So is the entropy source then the source that produces like a random sequence of something?

BambiOnIce

So the keys need to be random, as in, there is absolutely no pattern (no repetition), and therefore it is unbreakable? :)

BambiOnIce

so you are looking for patterns to break the cipher?

BambiOnIce

so the key to figure out the secret is to obtain the actual key/s, right? So at which point do you exchange your keys? Before, or during, communication with other parties?

BambiOnIce

I have Ex4 file encrypted so how can editing on it ? How can compile ? I use mt4 platform

niteshmalani

Great explanation
Could it be possible and effective to use the CT from a vigenere cipher and ruin it through another cipher ? And is there a cipher with a reusable decrypting method that is very strong and almost unbreakable ? like for example the one time pad but you can use the key multiple times

nyunno

It seems to me it is all about the patterns...:)

BambiOnIce

Hi Ryan, I am planning to cryptoanalyse substitution cipher using computer, but how do the computer know that it has decrypted the plaintext? as its manually not possible to check 26! factorial decryptions of the plain text. Any idea?

ThingsHybrid

can anyone help with computer security assignment

samueloyinlola

These brute force attacks... they don't sound very elegant, really. Surely there can be other ways to attempt to break the patterns...

BambiOnIce

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